Digital Commons Network^™

The Effects Of A Virtual Wellness Community Upon Participants’ Self-Efficacy Beliefs, Ashly Locklin

Electronic Theses and Dissertations

This study explored the effects of a virtual wellness community on the self-efficacy of participants to attain their wellness goals through a mixed-methods design. Eight female participants between the ages of 25-38 completed a pre- and post-survey with 5-point Likert scale questions and open-ended questions before and after participating in a 28-day virtual wellness community. Instruments were developed for this study based off Bandura’s (2006) Self-Efficacy to Regulate Exercise and Bandura’s (2006) Self-Efficacy to Regulate Eating Habits surveys. Quantitative data were analyzed by summing item level scores and calculating percentages to examine the distribution across the scales, through paired-samples t-tests, …

Examining The Moderating Role Of Promotive Factors On The Relationship Between Bullying Victimization And Suicidal Behavior, Rachel Simonds

Electronic Theses and Dissertations

Bullying is one of the most common challenges that youth in the United States face that can often have negative impacts on children’s lives and mental health. One potential negative outcome of bullying victimization is increased risk for suicidal behavior, including suicidal ideation and suicide attempts. Implementing interventions and supports for youth involved in bullying has the ability to decrease risk for suicidal ideation and suicide attempts.

Previous literature supports that those involved in bullying are at an increased risk for both suicidal ideation, and suicide attempts. Evidence supports promotive factors that help minimize negative outcomes those who are involved …

Nature Relatedness: Investigating Differences Among Rural, Suburban, And Urban Populations In Connection To Nature Scores, Elizabeth K. Skinner

Electronic Theses and Dissertations

The study examined the Nature Relatedness scores of people from rural, suburban, and urban populations to investigate differences among these populations. Survey participants also reported on whether or not they were currently raising children under the age of 18 in their home, how many outdoor activities they participated in as children and currently as adults, and their hours of screen time per day. These variables were examined to measure their impact on Nature Relatedness scores. Results showed significant differences in the Nature Relatedness scores of people from rural and urban, and urban and suburban populations. This study found that people …

Long-Term Study Of Prescribed Fire Effects On Stand Dynamics And Oak Regeneration Potentials In Degraded Upland Oak-Hickory Stands In Northwestern Arkansas, Mason C. Danheim, Kathryn R. Kidd Dr, Hal O. Liechty Dr, Brian P. Oswald Dr

Electronic Theses and Dissertations

Upland oak-hickory forests in the Ozark Mountains of northwestern Arkansas and south central Missouri were impacted by oak decline during the early 2000s. This decline event was caused by predisposing (e.g., mature, dense stand conditions), inciting (i.e., drought), and contributing (e.g., red oak borer, E. rufulus H., outbreak) factors. Immediately following onset of the decline, substantial crown dieback and tree mortality, particularly for two red oak species (northern red oak, Quercus rubra Michx. and black oak, Q. velutina Lam.), were observed. In addition, densities of advanced oak regeneration were inadequate at this time, resulting in poor regeneration potentials for …

Chronic Pain Acceptance: Optimism Mediates The Relation Between Dispositional Mindfulness And Pain Acceptance, Kelli Miles

Electronic Theses and Dissertations

ABSTRACT

Chronic pain is associated with many indicators of maladjustment. We expected that five individual components of dispositional mindfulness would be positively associated with pain willingness (Hypothesis 1) and activity engagement (Hypothesis 2). A mediational hypothesis was tested, whereby dispositional mindfulness would be positively associated with optimism and optimism would in turn be positively associated with both pain willingness and activity engagement (Hypothesis 3). Both Hypothesis 1 and 2 were partially supported. Acting with awareness and nonjudging were the only mindfulness components that were positively associated with pain willingness. Other components of mindfulness were either negatively associated with pain willingness …

Influence Of Biosolids Upon The Uptake Of Mn And Cd By Radish (Raphanus Sativus L.), Oluwadamilola O. Fateru

Electronic Theses and Dissertations

The influence of biosolids upon the uptake of Mn and Cd by radish (Raphanus sativus L.) was investigated through the characterization of biosolids, sequential extraction of the biosolids, and the determination of the metal content in the root, shoot and leaves of radish (Raphanus sativus L.).The biosolid samples from Nacogdoches Wastewater Sludge (NWWS), Lufkin Wastewater Sludge (LWWS), Soil Therapy Compost (STC) had pHs between 5.33 – 6.74. The elemental compositions of the biosolid samples were determined using inductively coupled plasma optical emission spectroscopy (ICP-OES) and SEM/EDX. Major elements (K, Mg, Mn, P) needed for plant growth …

Meta-Engagement: An Examination Of Employee Engagement Antecedant Variable Interactions And The Impact On Engagement Outcomes., Joshua Branden Jordan

Electronic Theses and Dissertations

This dissertation is a meta-analysis of employee engagement, employee engagement antecedent variable relationships, and the impact on engagement outcomes. Specifically, this analysis excluded the use of the Utrecht Work Engagement Scale (UWES) as a measure for employee engagement. Using the model proposed by Shuck and Wollard (2011) to understand relationship magnitude, this study examined the relationship of employee engagement antecedents (work-family conflict and supportive organizational culture), antecedents in relation to employee engagement and intent to turnover, and the relationship between employee engagement and intent to turnover. The results suggest a significant effect size for the pairing work family conflict/intent to …

Coordination Of Airway Protective Behaviors And Swallow: Effects Of Afferent Feedback And Sex., Alyssa D. Huff

Electronic Theses and Dissertations

This dissertation represents a series of studies describing mechanisms related to breathing, upper airway behaviors and their coordination in man and animal. Chapter two transformed the cough swallow aspiration protocol from the cat (previous work) to the human introducing a new strategy, volume targeting, in swallow breathing coordination. Chapter three evaluated swallow breathing coordination at increasing altitudes. As respiratory drive altered due to hypoxia and hypocapnia, swallow breathing coordination shifted toward inspiration occurring during the transition from inspiration and expiration. The collection of the two previous studies led to development of an animal model to evaluate volume targeting and …

Worker-Owned Cooperatives As Urban Economic Development., Nick Conder

Electronic Theses and Dissertations

This dissertation explores the topic of urban policies relating to worker-owned cooperatives, and the political conditions surrounding worker-owned cooperatives in American cities. The topic is studied through a comparison between two case study cities: Cleveland, Ohio and Jackson, Mississippi. Through the collection of public records and interviews with policymakers, analysts, and community activists, this study details the current policy status towards worker-owned cooperatives and the political context for the worker-ownership movement in each city. The study also offers preliminary assessments of existing worker-owned cooperatives and explores the obstacles facing worker-owned enterprises in the selected cities. The findings of the case …

Involuntary Memories After Stressor Exposure: Contribution Of Hormonal Status And Rumination In Women., Samantha C. Patton

Electronic Theses and Dissertations

Women experience fewer traumatic stressors over their lifespan than men, but demonstrate a higher prevalence of major depression and stressor-related disorders as a result of trauma exposure (Breslau & Anthony, 2007; Kessler et al., 2005). Differences in prevalence of stressor-related disorders may partially be due to sex-linked vulnerabilities related to emotional memory. Emotion assists in modulation of memory through neurological processes. This modulation enhances memory for emotional stimuli and can lead to a greater frequency of involuntary recall after stressor exposure. This involuntary memory is also a hallmark symptom of Posttraumatic Stress Disorder (PTSD). Sex-linked vulnerabilities, specifically hormonal status and …

Exploring Normalization Of Deviance And Examining Factors That Predict Culture Of Safety In The Operating Room., M. Imelda Wright

Electronic Theses and Dissertations

Patient safety in the operating room is a prodigious responsibility of OR nurses as the OR environment is complex and laden with risk, which increases surgical patients’ risk for adverse events. The dissertation presents the topic of patient safety in the operating room (OR), the concept of normalization of deviance, and a mixed-methods study with an exploratory sequential design that involved three phases. The dissertation comprises of five chapters. Chapter One presents an introductory overview of the salience of patient safety as well as its relevance to the unique environment of the OR. Chapter Two presents a concept analysis of …

Effects Of A Writing Instructional Package For Students With Moderate Intellectual Disability., Beth Newberry Gurney

Electronic Theses and Dissertations

The development of writing skills is one of the most complex competencies that students are expected to master (Saddler, 2013). Limited research has been conducted on the acquisition of writing skills for students with moderate and severe intellectual disability. Even fewer studies have examined the acquisition of sentence construction skills. The current study examines the effects of a writing instructional package using peer tutoring, response prompting, and sentence frames to teach students with moderate intellectual disability to construct sentences related to adapted grade-level social studies content. Four seventh grade students without disabilities were trained to implement the writing instructional package …

Laser Spectroscopic Investigations Of Organic Alkoxy And Peroxy Radicals., Md Asmaul Reza

Electronic Theses and Dissertations

Understanding the mechanism of combustion reactions is key for advancing internal combustion engine design, improving the efficiency of ignition chemical reactions, and reducing pollutant formation. In order to model the extremely complicated chemical kinetics of combustion processes, it is critical to detect and identify transient reactive chemical intermediates, particularly free radicals. Hence, it needs to be fully understood the gas-phase chemistry of organic compounds in the lower atmosphere. Over the past fifty years, parallel advancement in observational, experimental, and theoretical techniques, tremendous strides have been made in our understanding of the role of organic compounds in the atmosphere. Combustion chemistry …

Electrospun Fibers And Nanoparticles For The Prevention Of Sexually Transmitted Infections., Kevin Michael Tyo

Electronic Theses and Dissertations

Human immunodeficiency virus-1 (HIV-1) and herpes simplex virus 2 (HSV-2) affect hundreds of millions of people worldwide, with women disproportionately impacted by these infections. Currently, only oral pre-exposure prophylaxis (PrEP) is approved specifically for the prevention of HIV-1, but is challenged with adverse side effects associated with long-term use. Topical delivery platforms, such as gels and films, deliver agents directly to the female reproductive tract, but are limited in providing transient-release. The technology of polymeric electrospun fibers may serve as alternative topical delivery platform to the female reproductive tract. In these studies, we fabricated electrospun fibers comprised of different polymers …

Characterizing The Roles Of Neutral Ceramidase In Cisplatin-Induced Kidney Injury., Sophia M. Sears

Electronic Theses and Dissertations

Cisplatin is a commonly used chemotherapeutic agent with a dose-limiting nephrotoxicity. 30% of patients given cisplatin develop acute kidney injury (AKI). AKI increases risk of chronic kidney disease (CKD) development and mortality. Patients that don’t develop clinical AKI are still at risk for long term declines in renal function. Currently, there are no FDA approved agents to treat or prevent cisplatin-induced kidney injury (CDDP-KI). In this study, we demonstrated that neutral ceramidase (nCDase) knockout provides protection from AKI in the high-dose model of CDDP-KI. However, in the repeated low dose cisplatin (RLDC) model of injury and we found nCDase knockout …

Reaching Zero Waste: Determining The Student Perspective On Campus Food Waste., Cassie Anne Parkins

Electronic Theses and Dissertations

Food waste is an ongoing problem in the complex global food system. College campuses are in a unique position to address food waste through reducing it in their own food systems and by encouraging students to develop behaviors to reduce and divert waste from landfills. In this thesis project I seek to understand how students consider food waste and their attitudes and ideas about reducing it. To this end, I observed student behaviors and waste in University of Louisville’s all-you-care-to-eat dining hall and weighed plate waste there. I conducted informational interviews with University and Aramark employees, along with semi-structured interviews …

Charting A Course Through Confusion: Mapping Pathological Cranial Lesions In An Archaic Population From Kentucky., Austin Warren

Electronic Theses and Dissertations

Osteological observations interpreted as evidence for anemia (porotic hyperostosis and cribra orbitalia) have been used to interpret health and diet of past populations. These observations have contributed significantly to arguments that a deterioration of human health over time can be attributed to the adoption of agricultural subsistence practices and increased settlement aggregation. This study utilized a sample (n=110) from the Ward site (15Mcl11), a pre-agricultural, fisher-hunter-gatherer cemetery site dated to the Archaic Period in Kentucky, a part of the Shell Midden Archaic cultural complex. The impact of porotic alteration on differential mortality was assessed using Kaplan-Meier survival analysis. The Ward …

From Exclusion To Restoration: Implementation Successes And Barriers, Chris White

Electronic Theses and Dissertations

Exclusionary suspensions have been used extensively to handle student discipline and promote a perception of a safer environment in schools. However, an increasing number of school administrators have begun seeking alternative methods, such as restorative practices, in an effort to change the approach towards handling misbehaviors, conflict, and damaged relationships. This study occurred in a Grade 9 campus in northern Texas. The goal of the researcher was to better understand the challenges and successes of implementing restorative practices at the school during the 2018–2019 school year from multiple perspectives. Utilizing the principles of a program evaluation approach—deliberatively democratic evaluation—the researcher …

“Pissing In The Wind”: Racially Discriminatory Economic Policies’ Impact On Today’S Banking Status, Use Of Alternative Financial Services And Health Outcomes., Gaberiel Jones Jr

Electronic Theses and Dissertations

Centuries of discriminatory policies and practices in the United States have created racially segregated, resource-poor urban communities. Differential benefits of banking and housing legislation were among the consequences of these policies as they contributed to drastic racial inequities in wealth. Today, racial differences in banking status and financial practices persist. However, a void exists in the literature exploring what alternative financial services (AFS) are used in lieu of banks by Black Americans, why those services are used, the thoughts and beliefs of Black Americans about the use of those services, the impact of bank locations on financial behavior patterns, and …

The Manipulation Of Host Transcription By The Ankh Effector Of Legionella., Juanita E. Von Dwingelo

Electronic Theses and Dissertations

Legionella pneumophila is a Gram-negative facultative intracellular bacterium that can be found dispersed throughout freshwater environments, where it primarily parasitizes amoebae and other protozoan species. Humans are an accidental host for L. pneumophila, and infection occurs upon inhalation of aerosolized water droplets that contain the bacteria. L. pneumophila is the causative agent of Legionnaires’ Disease, which is the result of intracellular proliferation within alveolar macrophages. Pathogenesis of L. pneumophila is dependent on the Dot/Icm type 4 secretion system (T4SS) apparatus, which is comprised of 27 proteins and is responsible for translocating over 330 effector proteins into the host cell. Many …

An Electrochemical Instrument For The Analysis Of Heavy Metals In Water Via Anodic Stripping Coulometry For Applications In Remote Sensing., Kelsey Lynn Kaht

Electronic Theses and Dissertations

From the high levels of arsenic in groundwater in Bangladesh to the lead contamination of drinking water in Flint, Michigan, there are incidents across the globe that highlight the need for a reliable instrument capable of monitoring heavy metals remotely and continuously in a variety of geographical locations. Typical instrumentation for water analysis, such as ICP and AAS, must be housed in a central lab and relies on an operator traveling to the collection site, obtaining a sample, and transporting it back to the lab. This analysis provides a snapshot of the water quality that is limited to the specific …

The Effects Of Nicotine And Cigarette Smoking On Cardiac Electrophysiology., Affan B. Irfan

Electronic Theses and Dissertations

Cigarette smoking is a leading cause of preventable disease and premature death worldwide. The adverse effects of cigarette smoking, including proarrhythmia, are related to the mixture of chemicals, including nicotine (which sustains tobacco addiction). However, it remains unclear which individual tobacco smoke constituents and biological pathways mediate this increased risk. The purpose of this research was to explore the chronic effects of cigarette smoking, as well as compare the acute effects of nicotine and cigarette smoking, and the possible role of β-adrenoreceptors, on human cardiac electrophysiology. Chapter 1 is a comprehensive literature review of (a) the ex vivo and in …

Therapeutic Potential Of Withaferin A Against Non-Small Cell Lung Cancer., Al Hassan Kyakulaga

Electronic Theses and Dissertations

Lung cancer is the leading cause of cancer-related deaths worldwide and in the United States. Despite recent advancements in treatment approaches, chemoresistance and metastasis remain a major therapeutic challenge. Withaferin A (WFA), a plant-derived compound has recently emerged as a promising antitumor agent. In the present study, we explored the therapeutic potential of WFA against advanced NSCLC. Briefly, WFA was evaluated for its efficacy, toxicity and pharmacokinetic properties against advanced NSCLC using in vitro and in vivo models. Two human NSCLC cell lines, H1299 and A549 were used in cell culture to determine the anticancer properties of WFA. Repeat dose …

A Recombinant Cholera Toxin B Subunit Variant (Ctb-Kdel) Exhibits Unique Colon Mucosal Healing Effects That Have Therapeutic Implications For Inflammatory Bowel Disease., Joshua Mark Royal

Electronic Theses and Dissertations

This dissertation uncovers the mechanism and explores the utility of a recombinant cholera toxin B subunit (CTB) variant containing a KDEL endoplasmic reticulum (ER) retention motif (CTB-KDEL) as a drug candidate for the treatment of inflammatory bowel disease (IBD). CTB is a mucosal immunomodulatory protein that induces robust mucosal and systemic antibody responses. This well-known biological activity has been exploited in cholera prevention (as a component of Dukoral® vaccine) and vaccine development for decades. On the other hand, several studies have investigated CTB’s immunotherapeutic potential in the treatment of inflammatory diseases such as Crohn’s disease and asthma. Here, we reveal …

The Identification Of Long Non-Coding Rna Zfas1 Through An Exploratory Rna-Sequencing Analysis And Its Association With Epithelial-To-Mesenchymal Transition In Colon Cancer Adenocarcinoma., Stephen J. O'Brien

Electronic Theses and Dissertations

Colorectal adenocarcinoma is the fourth most common cancer diagnosed worldwide and is a significant cause of morbidity and mortality. This dissertation performed an exploratory RNA-sequencing analysis comparing gene expression between colon adenocarcinoma tissue and paired normal colon epithelium. After identification of a number of lncRNAs that were increased in expression in colon adenocarcinoma compared to normal colon epithelium, we aimed to validate the expression and investigate their function in vitro. Specifically, we focused on the lncRNA ZFAS1 and its association with epithelial-to-mesenchymal transition. These studies found the following: 1. Seven candidate lncRNAs were identified from the exploratory RNA-sequencing analysis to …

Disentangling The Negativity Bias: 7-9-Month-Old Crawling And Non-Crawling Infants' Responses To Fearful And Angry Expressions., Katherine C. Dixon

Electronic Theses and Dissertations

Understanding the origins of the negativity bias in infancy and how it develops is important for building a complete understanding of emotion perception. The goal of the present study was to 1) examine attentional biases for emotional expressions in infants between 7-9 months of age, specifically the bias for fearful and angry expressions, 2) examine how the onset of crawling is related to these biases and what that suggests about the mechanism underlying emotion preference in infants, and 3) examine how infant expression production differs when viewing different facial expressions. Infant attention biases to fearful, angry, happy, and neutral facial …

Denkyem (Crocodile): Identity Development And Negotiation Among Ghanaian-American Millennials., Jakia Marie

Electronic Theses and Dissertations

Ghanaian immigrants and second-generation Ghanaian-American Millennials are largely ignored in scholarship. Using qualitative methods, this study explored the experiences of Ghanaian-American Millennials who are first, 1.5, and second-generations with the purpose of understanding how they create, negotiate, and re-create identities. Twenty-one individuals were interviewed using a phenomenological approach. The main findings suggest that even though the sample populations were of different immigrant generations, they have some similar experiences, which demonstrates the value in exploring age instead of solely immigrant generation. The findings also suggest that there are a number of complex layers that are involved in identity development and negotiation …

Addressing The Problem Of Sterile Drug Injecting Supply Acquisition For People Who Inject Drugs., Barbra Ann Cave

Electronic Theses and Dissertations

This dissertation contains five chapters, including three manuscripts, covering harm reduction and some of the challenges people who inject drugs (PWID) face in their effort to reduce the risk of injection drug-related harms through sterile injecting supply acquisition and use. Chapter One discusses some background related to PWID and provides an overview of the issues addressed in this dissertation. Chapter Two includes a literature review covering the harm reduction concept, important aspects of syringe exchange programs as a harm reduction tool, and the social determinants of health model as a potential tool for future research. Chapter Three is a two-phase …

Campus Recreation Inclusion For People With Disabilities: A Qualitative Investigation Of Current Inclusive Practices., Tyler C. Spencer

Electronic Theses and Dissertations

This study investigated the current practices of campus recreation professionals to create inclusive campus recreation programs, services, and facilities. The researcher identified twelve campus recreation programs known by their peers and the industry to be at the forefront of providing inclusion efforts to people with disabilities. Through in-depth discussions with campus recreation practitioners at the twelve identified institutions, the investigation elicited a variety of interesting results. Utilizing the frameworks of Critical Disability Theory and Universal Design, this investigation identified how campus recreation practitioners perceive the inclusiveness of their campus recreation departments and how the campus recreation practitioners developed their inclusive …

Police Stress, Depression, And Substance Use Among Police Officers: A General Strain Perspective., Kyra Nicole Fritz

Electronic Theses and Dissertations

This dissertation examines the utility of general strain theory in explaining substance use as a form of coping among a sample of police officers in a Midwestern, metropolitan city. The dissertation is comprised of five chapters, including the introduction, literature review, method, results, and discussion. Chapter one describes the stressful nature of a career in law enforcement, concentrating on the adverse consequences of prolonged stress, including depression and substance use. Chapter one also examines strain, depression, and substance use among police officers using a general strain perspective, highlighting the limitations of existing empirical studies. Chapter two details the theoretical premise …