Digital Commons Network^™

Determining The Climatic Effects Of The Central Atlantic Magmatic Province Across The End Triassic Mass Extinction In The Elliot Formation, Southern Africa, Danielle Elizabeth Oberg

Graduate Theses and Dissertations

Understanding the intricate relation between carbon-cycle perturbations, climate change, and biodiversity stability is crucial in the face of ongoing anthropogenic greenhouse-gas emissions. This thesis explores the impacts of rapid climate change induced by carbon-cycle perturbations and their potential repercussions on global climate. Large igneous provinces, particularly the Central Atlantic Magmatic Province, offer a lens through which to examine the nexus of volcanic activity, mass extinctions, and climate change. The emplacement of Central Atlantic Magmatic Province, covering vast regions across continents, emitted substantial amounts of carbon dioxide, profoundly impacting global climate and ecosystems. The end-Triassic Mass Extinction, attributed to Central Atlantic …

Examining Eight-Year Bachelor’S Degree Completion Rates For U.S. Institutions Offering Competency-Based Education And Comparable Traditional Institutions, Gray Carpenter Church

Graduate Theses and Dissertations

Competency-based education (CBE) is a learner-centric framework that emphasizes what students “know and can show” more than how much time they spend in the classroom. CBE advocates claim that by allowing students to take as little or as much time as they need to demonstrate their mastery of course competencies, students develop higher levels of proficiency and are better prepared to enter the workforce. Despite having been in existence for decades, CBE has not been widely adopted in postsecondary education, and studies of CBE as a viable alternative to traditional methods of education remain scarce. The purpose of this cross-sectional …

Generalizations Of The Hardy Spaces And The Schwarz Boundary Value Problem, William L. Blair

Graduate Theses and Dissertations

We prove that many of the boundary properties associated with functions in the classic holomorphic Hardy spaces on the complex unit disk are present in Hardy classes of solutions to certain nonhomogeneous Cauchy-Riemann equations and higher-order generalizations of these equations. Also, we explicitly solve generalizations of the Schwarz boundary value problem on the complex unit disk and the upper-half plane when the boundary condition is in terms of boundary values in the sense of distributions.

Professional Development For Culturally Responsive Teaching: Examining The Relationship Between Self-Efficacy And Implementation In Teaching Practice, Chrystal Mckeever

Graduate Theses and Dissertations

The purpose of this study sought to investigate the link between professional development and the implementation of professional learning to improve student performance. The purpose of this study was twofold. First, this study explored whether the professional development of culturally responsive teaching influenced classroom implementation. Second, this study examined the relationships between teachers’ implementation of culturally responsive strategies, teacher self-efficacy, and student performance. This approach (which contextualized academic knowledge and skills within a real-world setting) has been shown to lead to more meaningful experiences and increased interest in academic content (Gay, 2010; Ladson-Billings, 1995). The overarching questions that led this …

News Framing Of The Ukrainian-Russian War: A Comparative Analysis Of Russian And American News Media, Alina Rudakova

Graduate Theses and Dissertations

This study was conducted with the goal of exploring ways in which American (The New York Times) and Russian (TASS) print news media frame the Ukrainian-Russian War. Along with examining the differences and similarities in primary framing techniques used by American and Russian news, the focal point of this study was to identify who is portrayed as an aggressor and who is illustrated as a victim in this conflict. Informed by the news media framing literature and construction of the social problems perspective, this study was led by two research questions: (1) How do the American and Russian news media …

Comparing Children’S Engagement In Storybook Reading With And Without Access To Aac With A Literacy Supportive Feature, Brooke Zimmerman

Graduate Theses and Dissertations

Purpose: This thesis evaluates the effects of comparing children’s engagement in storybook reading with and without access to high-tech augmentative and alternative communication (AAC) with a literacy supportive feature. Literacy skills are a fundamental cornerstone for engagement in the lives of young children. Among these skills, the ability to decode words, or phonetically sound them out, plays a pivotal role in the acquisition of literacy. Proficiency in literacy also broadens the communication capabilities of individuals with developmental disabilities who rely on augmentative and alternative communication (AAC) methods. However, existing AAC technologies currently fall short in adequately strengthening literacy development, particularly …

Dyslexia Training: The Impact On The Perceptions And Knowledge-Base Of Pre-Professionals Preparing To Work In K-12 Educational Settings, Colby Fowler

Graduate Theses and Dissertations

This research explores the perceptions and understanding of dyslexia among first-year graduate students in speech-language pathology. Employing survey methodology, specifically a pre- and post-survey approach, this research investigates the attitudes and knowledge that the participants have in understanding and addressing dyslexia at the beginning of their graduate training. The study seeks to uncover the existing awareness, potential misconceptions, and the overall preparedness of these emerging professionals in dealing with individuals affected by dyslexia. Through a comprehensive survey analysis, the research aims to contribute valuable insights that can inform the development of targeted educational strategies and interventions within speech-language pathology programs, …

Instagram And Influencer Marketing: An Empirical Study Of The Parasocial Interaction Theory And Its Effects On Purchase Intention, Caroline Marie Chumley

Graduate Theses and Dissertations

Scholars have studied different factors that contribute to a parasocial interaction theory, and how this relates to purchase intention in the marketing industry. Previous research concentrates on parasocial interactions between television personalities and consumers, rather than influencers on social media. It is important to determine exactly what factors lead consumers to create a parasocial interaction with influencers in the media and determine how that parasocial interaction mediates purchase intention. Influencer marketing on Instagram is included in this study, as it contains brand-sponsored posts and allows users to interact with each other. This study utilizes the parasocial interaction model to determine …

Geomorphic Analysis Of The Lower Arkansas River, Usa, Matthew Edwards

Graduate Theses and Dissertations

The Arkansas River is one of several large and important river systems stretching from the Rocky Mountains to the Mississippi River. It meanders across the Great Plains for ~1000 km before plunging into a mountain-bound valley, confined by the Ozarks to the north and Ouachitas to the south. The geologic history of the Arkansas River is poorly understood and crudely constrained to sometime between ~60 Ma and 100 Ka. Questions remain concerning its path(s), potential integration of the upper and lower sections, and overall history. The combination of knickpoint and chi (χ) mapping, tributary grain size analysis, tensile strength testing, …

Identifying Grassland Cores In The Southeast: Relating Spatial Covariance To Avian Communities And Vegetation Structure, Lauren L. Berry

Graduate Theses and Dissertations

Globally, grasslands are declining in range, which is leading to a decline in grassland-dependent taxa. These declines can be attributed to a variety of issues, a major one being the encroachment of woody species into historic grasslands. There is a new framework for strategizing grassland management, referred to as “Defend the Core,” which calls for proactive management of intact grasslands, meaning conserving remaining grasslands by preventing woody encroachment in the first place. To successfully defend the core, it is imperative that we develop rapid methods to identify intact grassland cores for management priority. One method that can be used for …

Genome-Wide Association Study/ Genomic Prediction Of Cowpea Seed Protein And Black Seed Coat Color In Cowpea, Yilin Chen

Graduate Theses and Dissertations

Cowpea (Vigna unguiculata [L.] Walp) is a crucial crop in many regions, serving as a vital protein source for humans and livestock. Addressing the need to enhance its nutritional quality and make it easier to cultivate cowpeas of specific colors, this study utilized genome-wide association studies (GWAS) to identify markers associated with protein content and seed coat color patterns in cowpea.

In the protein content study, a GWAS was conducted on 161 cowpea accessions using 110,155 high-quality single-nucleotide polymorphisms (SNPs). Seven significant SNP markers were identified, all located at a locus on chromosome 8 associated with the gene Vigun08g039200, enhancing …

The Struggle For Work-Life Balance: Quiet Quitting As A Hyper-Individualized Tool Of Neoliberal Resistance, Hanna Cashion

Graduate Theses and Dissertations

This thesis provides a critical/cultural analysis of the quiet quitting trend which took social media by storm in 2022. Quiet quitting became a popular contemporary method to resisting three hurdles of the American workforce: economic turbulence, overwhelming labor standards, and decreasing mental wellness – in hopes of achieving more work-life balance. The analysis applies Marxist theory to contemporary neoliberalism through three case studies of individuals who share their quiet quitting experience. The first chapter covers the case of a K-12 educator who prompts the analysis of out-of-pocket classroom expenses, teacher unions, and the implications for collective action in neoliberal times. …

Cooperating Teacher Mentorship Behaviors And Job Satisfaction As Predictors Of Agricultural Education Interns’ Intent To Teach, Sarah Frances James

Graduate Theses and Dissertations

Almost a quarter of agricultural education graduates do not teach SBAE upon graduating (Foster et al., 2024), however, this attrition has not been widely studied and reasons for this decision have not been identified. To increase the number of qualified teachers entering the classroom, the reasons for this attrition must be identified and addressed by universities. This study was conducted to investigate possible relationships between cooperating teacher mentorship behaviors, job satisfaction, and intent to teach in spring 2024 agricultural education interns. A survey, which combined the student teacher view part of Nesbitt and Barry’s (2023) cooperating teacher best practices instrument …

The Effect Of Microbial Bile Acid Metabolism On Clostridium Perfringens Virulence, Tahrir Jatli Alenezi

Graduate Theses and Dissertations

Clostridium perfringens is a predominant intestinal pathogen affecting both humans and animals, including chickens resulting in significant economic losses. In chapter I, I have overviewed the dynamics of the intestinal immune system, the composition of the intestinal microbiome, and how the microbiome influences inflammation in the development of Clostridium infection. The intricate interplay between immunity, microbiota, and their metabolites is likely critical in the pathogenesis of C. perfringens and uncovering these interactions may unveil new avenues for prevention and treatment. The objective of this chapter is to provide updated insights into the role of host-microbe interactions and their potential therapeutic …

Barriers To Participation In Research Sae Projects And Ffa Agriscience Fair Competitions, Jessica Hall

Graduate Theses and Dissertations

Agricultural education plays a pivotal role in preparing students for careers in the ever-evolving field of agriculture. This study investigates the professional development and training needs of school-based agricultural education (SBAE) teachers in the context of research SAE projects and participation in FFA agriscience fair competitions. Through a comprehensive literature review and empirical inquiry, this study aims to identify teachers' confidence levels, perceived importance of tasks, professional development needs and barriers hindering student and teacher involvement in these activities. The research objectives were structured to address key aspects of SBAE teacher preparedness and student engagement. Findings reveal areas where teachers …

Assessing Consumer Willingness To Pay For Zinc-Biofortified Rice – The Case Of Colombia, Sara Ann Oswalt

Graduate Theses and Dissertations

Hidden hunger, a form of undernourishment caused by micronutrient deficiencies, remains a critical global challenge affecting billions worldwide. Biofortification of staple crops, such as rice, offers a promising solution to address this problem. However, changes in the physical and culinary characteristics due to biofortification may hinder consumer acceptance and limit the benefits of this approach. This research explores consumer preferences and willingness to pay (WTP) for zinc-biofortified rice in Cartagena, Colombia. A non-hypothetical experimental auction, including 400 consumers in five different locations within Cartagena, was conducted to analyze the impact of information, socioeconomic factors, and consumer nutrition knowledge on WTP …

Cultivating Atmosphere In Independent Coffee Shops: Reflections On How Atmospheres Are Created Through Sensory Experiences, Brooke Bierhaus Sutton

Graduate Theses and Dissertations

Affective atmosphere is a fundamental component to the allure of coffee shops that is cultivated through sensory experience. In this thesis I examine how the sensory experience of sight, sound, smell, taste, and touch, create atmospheres in coffee shops. I ask, “how do coffee shops cultivate an affective atmosphere?” Through an exploration of material culture, design, affect, and the intentional production of third places, I illustrate the ways in which independent coffee shops have their own unique identities and atmospheres. By using memoir and reflexive analysis of my decade in global coffee culture, as well as an extensive literary review, …

Reflection And Connection: Trauma-Informed Yoga And Its Aid In Trauma Healing In Female Identifying College Students, Gabrielle V. Sandoval

Graduate Theses and Dissertations

Traumatic experiences affect female identifying folks at an unequal rate compared to other populations. Trauma-informed yoga (TIY) has become a popular intervention for treatment of symptoms related to trauma. By utilizing tenets such as meditation, intentional movement, and trauma-informed language and positioning, this practice focuses on the mind-body-connection to establish feelings of safety. Although trauma education and interventions are becoming commonly implemented on college campuses, there is a gap in implementation and empirical studies evaluating such campus programs. To explore how TIY could aid this population, a four-week yoga intervention was created. Four participants engaged in a weekly TIY class …

Narrative Harmony: The Implementation Of Sound Design And Its Immersive Nature, Patrick Joseph Kelly

Graduate Theses and Dissertations

Sound is the first tool we are given to interact with the world we inhabit. Despite this, most discussion of narrative content revolves around written and visual storytelling. This often means audio is forgotten or overlooked during the production process. A phenomenon which is especially present amongst inexperienced content creators. By combining the transportation imagery model and Narrative Paradigm theories, a formula for analyzing narratives and immersion within the modern setting becomes prevalent. This combination would then lead to the creation of a four-episode podcast series was created where each episode was mixed to highlight a different component in sound …

Career Skills Congruence: Transferring Military Talent To The Civilian Job Market: A Preregistered Study, Anna M. Amos

Graduate Theses and Dissertations

The training and experience gained through U.S. military service instill a strong sense of discipline, loyalty, and duty to one's country while preparing service members for the challenges they face during their military careers. Military culture is a defining aspect of servicemembers' identities, especially for those who have spent significant time in the military. The problem is that service members often enculturate into a life where they adopt an identity incongruent with the ability to engage in a smooth transition to civilian culture. The purpose of this cross-sectional regression study is to test social identity theory and transition theory that …

Institutionalized Stigmas: Hiv Stigma, Racism And Heterosexism Among Medical Students In The Southern United States, Krishen D. Samuel

Graduate Theses and Dissertations

Background: Intersecting and related forms of stigma, including HIV-related stigma, racism, and heterosexism, disproportionately impact both communities vulnerable to acquiring HIV and people living with HIV (PLHIV), ultimately impacting more distal outcomes related to HIV prevention, treatment, and epidemiological patterns in the United States (US). The Southern US is the region most impacted by new HIV diagnoses, mainly among Black men who have sex with men (MSM). However, there is a paucity of research on medical students, specifically those in the Southern US, regarding stigmatizing attitudes they may hold towards PLHIV, and how these associate with racism and heterosexism. This …

Design And Implementation Of High-Frequency Dc-Dc Converters For Ev Applications, Rahul Biswash

Graduate Theses and Dissertations

The power electronics industry has been revolutionized by introducing wide bandgap semiconductor devices, such as Silicon Carbide (SiC) and Gallium Nitride (GaN). Due to their high frequency, high temperature, and high voltage operating capabilities, wide bandgap devices boast significant improvements in power density, efficiency, and reliability, as evidenced by their ability to decrease the size of power converters by operating at higher frequencies, temperatures and voltages, use of smaller and less passive components, such as transformers, inductors and capacitors, which makes power converters more compact and light-weight, ideal for space and weight-constrained applications, and compatibility with a wide range of …

Evaluation Of The Effect Of A Commercial Lippia Origanoides Essential Oil Extract On Salmonella Serovar Enteritidis As A Natural Alternative To Antibiotics In The Poultry Industry, Abdiel Atencio

Graduate Theses and Dissertations

The purpose of the present research was to evaluate the bactericidal activity of a microencapsulated Lippia origanoides essential oils (LOEOs) against Salmonella Enteritidis (SE) in an in vitro crop assay and in a prophylactic broiler chicken model using three low doses of the product: 75 ppm, 150 ppm and 300 ppm. Two trials of each assay were conducted. Day-of-hatch male Cobb-Vantress broiler chickens were randomly allotted to one of four groups: 1) positive control group; 2) 75 ppm LOEOs group; 3) 150 ppm LOEOs group; 4) 300 LOEOs group. Chicks were fed and watered ad libitum in heated brooder batteries …

The Interplay Of Chronic Alcohol Misuse And Facial Recognition Abilities, Morgan Wilson

Graduate Theses and Dissertations

Both perpetrators and eyewitnesses of a crime have often been found to be under the influence of alcohol. While research has been conducted on the short-term effect of alcohol on eyewitness memory and lineup performance, little research has investigated the long-term effects of chronic alcohol misuse on facial recognition abilities. The current study investigated the effect of alcohol misuse on facial recognition and whether duration of misuse contributed to this effect. Participants (n = 370) completed an online survey which consisted of a well-tested facial recognition paradigm plus several surveys pertaining to individual differences of interest. We found race match …

Erased From The Curriculum: Studying The Role Curriculum Plays On Students Political Attitudes At The University, Julie Jann Gallagher

Graduate Theses and Dissertations

University curriculum shapes political identity. Most studies focus on secondary education, overlooking the influence of university curriculum and its effect on students’ political attitudes. For this study, I examine the curriculum of three classes: American Government, African American Studies, and Astronomy. I argue that exposure to race-specific curriculum shapes racial identity. The results will suggest that students who take non-race-specific courses are more likely to support racially neutral and colorblind (White Nationalist) attitudes. I argue that curriculum affects students’ political attitudes.

Examining The Impact Of Parental Punishment And School Punishment On Delinquency And Criminal Justice Contact, Mia Robert

Graduate Theses and Dissertations

Prior research states the important role that both parents and schools play in setting children up for success. However, few researchers have studied how parents and schools work in tandem to achieve these outcomes. The current study aims to fill this gap by understanding the relationship between parental harshness and exclusionary discipline at age 9, specifically suspension, and how it affects delinquency and later criminal justice contact at age 15. Using longitudinal data from the Future of Families and Child Wellbeing Study (FFCWS), this study aimed to answer the following two research questions: 1) Does increased parental harshness and harsh …

Developing Anisotropic Soft Matter As Functional Materials To Interface With Biological Systems, Homa Ghaiedi

Graduate Theses and Dissertations

Liquid crystals (LCs) constitute a subset of soft matter possessing hybrid characteristics from both liquid and crystalline phases. In this state, the center of masses remains uncorrelated similar to an isotropic phase, while the long axis of molecules aligns in parallel, resulting in molecules exhibiting orientational and positional order, either individually or concurrently. The directional alignment inherent in LCs arises from the asymmetrical shape and structure of the constituent molecules, causing a spontaneous self-assembly into ordered phases. This cooperative molecular behavior manifests distinctive optical features when subjected to cross polarizers. The remarkable sensitivity of LCs to external stimuli, including temperature, …

Migration And Breeding Ecology Of King Rails (Rallus Elegans) In Southeast Arkansas, Jessica Schmit

Graduate Theses and Dissertations

King Rails (Rallus elegans) are a secretive marsh bird species of conservation concern in Arkansas. Freddie Black Choctaw West WMA in southeast Arkansas has multiple confirmed pairs of breeding King Rails and offered an opportunity to investigate King Rail migration ecology, as well as nesting ecology and nest site selection. In Chapter 1, we determined migratory status (resident vs. migratory) and described seasonal movement. To do this, we captured and outfitted 23 birds with Argos GPS tags to track migration patterns throughout the season. We found that most of the population did not make long distance migrations but instead were …

Guaraní Sexuality And Contestations Over The Old Way Of Being, Robert Miles Berry

Graduate Theses and Dissertations

The Jesuits in seventeenth century Guairá attempted to shift the sin of adultery and polygyny away from Guaraní men, and onto Guaraní women in their process of evangelization in Paraguay. The Jesuits did so because Guaraní men, as influential patriarchs within the missions, would revolt against the Jesuits or flee the Jesuit missions in response to Jesuit indoctrination that denounced the practice of polygyny. This is evident through two works of the Jesuit Antonio Ruiz de Montoya: one lexical, the Tesoro, and the other narrative, the Conquista. Montoya was directly involved in the founding and maintenance of the Guaraní missions, …

In-Service Needs Of Selected Arkansas Agriculture Teachers Related To Precision Agriculture Systems, Henry Ofosu Akwah

Graduate Theses and Dissertations

Precision Agriculture (PA) entails the use of computer technology, including software and hardware, together with good agronomic practices to effectively utilize resources available to growers. PA may enhance profitability, sustainability, resilience, and efficiency when implemented successfully. The aim of this study was to identify, assess, and describe the PA in-service needs of selected high school agriculture teachers in Arkansas. Forty-four teachers participated in the study, recruited through convenience sampling during the annual Arkansas agriculture in-service workshop held at Camp Couchdale in July 2023. A survey instrument was developed, and all forty-four participants provided complete responses. The survey included twenty-nine PA …