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Impact Of Baseline Cognition On Dual-Task Performance: Tracking Verbal Accuracy And Fluency In Adults At Risk For Alzheimer’S Disease, Rebecca Nicole Frederichs
Impact Of Baseline Cognition On Dual-Task Performance: Tracking Verbal Accuracy And Fluency In Adults At Risk For Alzheimer’S Disease, Rebecca Nicole Frederichs
Graduate Theses and Dissertations
Alzheimer’s Disease (AD) is increasing in prevalence as life expectancy continues to rise, highlighting the need for sensitive measures to detect early cognitive changes. This study examined the effects of baseline cognitive status on dual-task performance over time, in terms of dual-task cost, verbal fluency, and verbal accuracy in older adults at risk for AD. This study utilized a quantitative secondary analysis of the longitudinal dataset, the Digital, Cognitive, Multi-Domain Alzheimer Risk Velocity (DC-MARVel) study (Gray et al., 2022). Participants were categorized into low, medium, or high cognitive tertiles based on baseline Repeatable Battery for the Assessment of Neuropsychological Status …
City Context And Climate Risk Perception In Arkansas, Mohammad Mizanur Rahman
City Context And Climate Risk Perception In Arkansas, Mohammad Mizanur Rahman
Graduate Theses and Dissertations
Perceptions of climate change risk are shaped by both individual-level factors, such as cultural worldviews, party identification, and demographic characteristics, as well as by local environmental and contextual characteristics. This study, conducted in Arkansas, employed both individual- and city-level analyses to assess the influence of local context on variation in climate change risk perception. At the city level, measures of climate policy environment, digital infrastructure, civic and resource context, political landscape, and climate-related vulnerability were developed and compared across Arkansas cities. At the individual level, the analysis explored associations between cultural worldviews, party identification, demographic variables, and climate risk perception. …
Seasonality Of Bovine Respiratory Disease Incidence, Nasal Temperatures, And The Nasal Microbiome In Receiving Beef Cattle: Understanding The Risk Of The Bovine Respiratory Disease Complex, Robin Ashley Cheek
Graduate Theses and Dissertations
Bovine respiratory disease (BRD) has persistently been the leading cause of morbidity of beef cattle in the United States. Season has been directly associated with respiratory disease incidence and is likely a proxy for weather conditions, which vary by geographical location. The nose is one of the first points of contact between the outside environment and inside the body. The nasal microbiome and its relationship with BRD have been heavily studied within beef cattle, but there are not yet any studies to determine if the environment within the nasal cavity has a role to play in this mechanism. This dissertation …
Soft Urea Nitridation Of Tantalum-Based Thin Films For Oxynitride Synthesis, Rishabh Srivastava
Soft Urea Nitridation Of Tantalum-Based Thin Films For Oxynitride Synthesis, Rishabh Srivastava
Graduate Theses and Dissertations
Rising global energy consumption and the transition toward low-carbon technologies place new demands on functional materials. Particularly, semiconductors that convert sunlight directly into chemical fuels with high efficiency and long operational lifetimes. The synthesis of visible light active tantalum oxynitride (TaON) thin films for photoelectrochemical (PEC) water splitting typically requires ammonolysis with pressurized NH3 gas, which presents persistent barriers in safety and phase selectivity. In this work, a soft urea ammonolysis route was employed in which solid urea was employed as an in-situ nitrogen source inside a vacuum-sealed reactor. The finite urea mass establishes a self-limiting nitrogen chemical potential that …
Pre-Service Teacher Mental Health Bias Toward Students, Rachael Ann Crofford
Pre-Service Teacher Mental Health Bias Toward Students, Rachael Ann Crofford
Graduate Theses and Dissertations
The purpose of this study was to understand mental health bias held by pre-service teachers. Participants in the study were 122 pre-service teachers enrolled in teacher education programs at three universities (two in the Midwest and one in the South) and included 92.6% white, 82% female, and ranged in age from 18-59 years old, with the largest group of participants being 20 years old. This cross-sectional survey study used the Biases Toward Children with Psychological and Behavioral Disorders Scale (Hirsch, 2013), comprised of 21 items using 1-6 Likert scale. In addition, demographic, education experience, mental health training, mental health care …
Beyond Semantic Matching: Integrating Graph Structures, Boolean Logic, And Interactive Aggregation In Modern Retrieval, Quan Mai
Graduate Theses and Dissertations
Modern Natural Language Processing (NLP) and Information Retrieval (IR) systems have achieved remarkable success in semantic understanding; however, they continue to struggle with complex logical reasoning, structural interactions, and dynamic aggregation. This dissertation presents a comprehensive framework to enhance the structural, logical, and interactive capabilities of language models and retrieval systems across four progressive studies. First, we address the challenge of modeling dynamic conversational logic in online debates. We introduce a Sequence Graph Network (SGN) that captures the temporal and interactive exchange of ideas—such as counterarguments and reinforcements—by updating node features sequentially through a novel Sequence Graph Attention (SGA) layer. …
Evaluation Of Metabolizable Energy And Phosphorus Availability In Conventional And Fractionated Dry-Grind Corn Co-Products For Poultry, Luke Parisi
Graduate Theses and Dissertations
The purpose of this research was to determine the availability of energy and phosphorous (P) in dry-grind corn co-products in chickens was assessed. In the first objective, the determination of energy availability, both a precision-fed rooster assay and an ad libitum fed broiler chicken assay were used in order to elucidate energy availability in corn co-products. There were 8 samples of corn fermented protein (CFP) and 2 samples of conventional distillers dried grains with solubles (CDDGS) evaluated for metabolizable energy (ME). The CFP contained a mean CP and crude fat of 55 and 3.7% (DM basis), respectively, compared with 30 …
Potassium Fertilization Timing And Critical Stalk Potassium Concentration As Tools To Improve Corn Production, Gabriela Andrade Leite Mengez
Potassium Fertilization Timing And Critical Stalk Potassium Concentration As Tools To Improve Corn Production, Gabriela Andrade Leite Mengez
Graduate Theses and Dissertations
Potassium (K) is a common yield-limiting nutrient in Mid-Southern U.S. corn (Zea mays L.) production, emphasizing the importance of effective diagnostic tools to support fertilizer decision-making. This study integrated two approaches to improve K management in irrigated corn systems: (i) evaluating K fertilization timing to identify in-season opportunities for correcting K deficiency, and (ii) developing a corn stalk-based diagnostic test to assess end-of-season K and nitrate-nitrogen (NO₃-N) status and fertilizer adequacy. Seven (2024-2025) and eight (2023-2024) field trials were conducted across Arkansas for the K application timing and stalk testing studies, respectively. For the K timing study, fertilizer-K (112 kg …
A Pilot Randomized Clinical Trial Examining The Efficacy Of Group-Based Parent-Child Interaction Therapy (Pcit) For Autistic Youth: A Mixed-Method Design, Julia L. Kiefer
A Pilot Randomized Clinical Trial Examining The Efficacy Of Group-Based Parent-Child Interaction Therapy (Pcit) For Autistic Youth: A Mixed-Method Design, Julia L. Kiefer
Graduate Theses and Dissertations
Caregivers of autistic children experience a myriad of barriers when seeking psychotherapy for their children including a lack of family-based treatment options, lengthy waitlists, and limited access to specialized therapists. As the demand for both accessible and affordable mental healthcare for autistic youth increases, group-based interventions may be a useful alternative to more time intensive individual treatment options – allowing for multiple clients to be seen at once. The present study examined the efficacy of an adapted evidence-based intervention, Parent-Child Interaction Therapy, to be delivered in a brief, group-based format with families of autistic youth. Driven by input from a …
Essays In Whistleblowing, Crime, And Experimental Economics, Danielle Nickeisha Purcell
Essays In Whistleblowing, Crime, And Experimental Economics, Danielle Nickeisha Purcell
Graduate Theses and Dissertations
This dissertation comprises three essays on how institutional strength, enforcement practices, and cognitive load affect behavior. The first essay presents a laboratory experiment that varies the extent to which an individual in a position of authority can interfere with the outcome of whistleblowing, holding all other monetary incentives fixed. Strengthening institutions raises whistleblowing rates, lowers theft, and reduces the rate of bribe offers, while leaving authorities’ acceptance of bribes unchanged when they face no punishment for accepting them. The second essay studies the end of stop and frisk in Chicago following the 2015 ACLU-CPD settlement agreement, which cut annual investigatory …
Native American Speech-Language Pathologists: Voices And Perspectives, Lexi Woods
Native American Speech-Language Pathologists: Voices And Perspectives, Lexi Woods
Graduate Theses and Dissertations
Abstract: This narrative inquiry centers the lived experiences and professional voices of Native American speech-language pathologists (SLPs) working with students with disabilities on tribal lands, a population that remains unheard within special education and speech-language pathology research. Grounded in Indigenous epistemologies that honor relationality, storytelling, and community accountability, this study explores how Native American SLPs navigate systemic inequities, cultural and linguistic mismatches, and institutional constraints while providing services in public, tribally controlled, and Bureau of Indian Education schools. Through in-depth narratives, the research illuminates how participants resist deficit-based approaches by reframing silence, communication styles, family engagement, and disability through culturally …
Idenscarty: Sewing As A Coping Mechanism Beyond Reductive Aesthetics And Capitalism, Edward Berchie Osei
Idenscarty: Sewing As A Coping Mechanism Beyond Reductive Aesthetics And Capitalism, Edward Berchie Osei
Graduate Theses and Dissertations
The act of sewing, an intergenerational craft often subordinated to aesthetics and capitalism, is being recognized for its benefit to emotional well-being, identity (re)formation, cultural continuity, and communal interconnectedness. In this context, this thesis emerges from my lived experiences and artistic inquiry into how sewing, slow-sewing in particular, can serve as a therapeutic practice, with special consideration for contemporary art pedagogy. Central to the thesis is the concept of IDENSCARTY, which combines themes of identity, scars, and transcultural influence to project the responsive abilities of Therapeutic Sewing Practices (TSP), a term that highlights the workability of slow-sewing practices. Informed by …
Tipping In The Digital Age: Comparing Group And Individual Tipping Behavior Across Cashless Payments, Akosua Sayer Koduah
Tipping In The Digital Age: Comparing Group And Individual Tipping Behavior Across Cashless Payments, Akosua Sayer Koduah
Graduate Theses and Dissertations
Tipping has long been central to the U.S. hospitality industry, where it provides a substantial share of service workers’ income. What was once a cash-based practice is now increasingly mediated through digital platforms such as card readers, QR codes, and peer-to-peer apps. These systems introduce features such as visibility of the decision, preset defaults, and group payment options that reshape how customers decide whether and how much to tip. While traditional tipping has been widely studied, research on digital restaurant tipping remains limited. This study focuses on two underexplored mechanisms: visibility (whether staff can observe the decision) and group context …
In The Shadow Of The Steeple: A Theory Of Religious Hypocrisy, Justin Arthur Rice
In The Shadow Of The Steeple: A Theory Of Religious Hypocrisy, Justin Arthur Rice
Graduate Theses and Dissertations
In this dissertation, I explore how Christian doctrine and practice respond to the pressures placed upon them by the troubling reality of religious hypocrisy (RH). Assuming a teleological notion of social institutions, I argue that RH is best understood in relation to the Church as an institution, and that RH occurs when religious agents undermine or subvert their appointed role within the Church. RH consists in the conscious or unconscious charade of spiritual or moral virtue undertaken in one’s capacity as a member of a religious institution, grounded in a fundamental disparity between one’s thoughts, words, desires, motivations, or deeds, …
Physics-Informed Machine Learning For Predictive Digital Twins In Greenhouses, Hoang Kim Tran
Physics-Informed Machine Learning For Predictive Digital Twins In Greenhouses, Hoang Kim Tran
Graduate Theses and Dissertations
Greenhouses are widely used to create controlled environments for crop production, where indoor climate variables such as air temperature, relative humidity, CO2 concentration, radiation, and soil or substrate conditions directly affect plant growth, yield, energy consumption, and resource use. However, greenhouse climates are highly dynamic because they are influenced by complex interactions among outdoor weather, greenhouse structure, crop transpiration, heating systems, ventilation, screens, fans, irrigation, and other actuators. Building digital twins for greenhouses provides a powerful way to represent, monitor, and predict these climate dynamics. A predictive digital twin can simulate future indoor climate states based on current greenhouse conditions, …
Leveraging Data Science And Analytics For Next-Generation Transportation And Logistics: Literature Review And Regional Analysis, Kazi Humayra Shams
Leveraging Data Science And Analytics For Next-Generation Transportation And Logistics: Literature Review And Regional Analysis, Kazi Humayra Shams
Graduate Theses and Dissertations
The increasing integration of data science and analytics into next-generation transportation and logistics planning and operations offers improved system performance but requires managing and interpreting vast and complex datasets. The Arkansas Smart Transportation Research, Infrastructure and Data-Driven Engineering Systems (AR-STRIDES) program (NSF Award No. 2445877) is working to develop data science solutions and data-driven supply chain technologies for next-generation transportation and logistics systems. This thesis supports AR-STRIDES by providing a comprehensive literature review of recent literature studying data science and analytics in transportation and logistics systems and conducting a regional analysis of Arkansas to create a database of companies, higher …
Parent-Child Interaction Therapy For Toddlers In Japan: Comparing Outcomes For Children With And Without Autism And/Or Developmental Delays, Emily-Anne Sevilla Del Rosario
Parent-Child Interaction Therapy For Toddlers In Japan: Comparing Outcomes For Children With And Without Autism And/Or Developmental Delays, Emily-Anne Sevilla Del Rosario
Graduate Theses and Dissertations
Parent-Child Interaction Therapy for Toddlers (PCIT-T) is a toddler adaptation of Parent-Child Interaction Therapy designed to improve social-emotional development and parenting practices among children under two years of age. This study evaluated the effectiveness of PCIT-T among Japanese families and explored whether treatment outcomes differed between neurotypical toddlers and autistic children and/or children with developmental delays. Data was analyzed from 83 parent-child dyads who received PCIT-T in community-based agencies across Japan between 2018 and 2023. Results indicated significant improvements in children’s protective developmental factors, caregiver use of PRIDE skills, and reductions in Avoid skills following treatment. CARES skills did not …
From Learner To Leader: Exploring Principals' Perspectives On Professional Learning, Development, And Mentoring, Eric William Kausch
From Learner To Leader: Exploring Principals' Perspectives On Professional Learning, Development, And Mentoring, Eric William Kausch
Graduate Theses and Dissertations
This purpose of this qualitative study was to examine veteran secondary school principals’ engagement in professional learning, development, and mentoring for the improvement of their leadership skills. While previous literature provides insight into administrative preparation programs, mentoring of novice leaders, and succession planning for those advancing their careers, there are fewer studies that discuss enhancing experienced principals’ leadership development. The study was guided by three research questions: (1) How do principals describe their experiences participating in professional learning and development? (2) What types of leadership experiences do principals engage in to improve their leadership skills? and (3) How does engaging …
Investigating And Comparing Special Education Teachers’ Perceptions Of Workload Manageability And The Relationship With Attrition, Kasey Sanders
Investigating And Comparing Special Education Teachers’ Perceptions Of Workload Manageability And The Relationship With Attrition, Kasey Sanders
Graduate Theses and Dissertations
This study investigated special education teachers’ (SETs) perceptions of workload manageability and the relationship between these perceptions and intentions to quit. State-wide data from the Kansas State Department of Education showed a significant increase in the number of special education vacancies from a total of 161, or .03% in the 2019-2020 school year to 557, or 11%, in the 2024-2025 school year. Over the past four years, the number of special education teachers with a non-traditional license has increased from 312, or 6%, in the 2021-2022 school year to 427, or 8%, in the 2024-2025 school year (KSDE, 2025). Using …
Drawing Conclusions: Autonomy And Mental Maps In Denmark And The Faroe Islands, Erik Steven Breidinger
Drawing Conclusions: Autonomy And Mental Maps In Denmark And The Faroe Islands, Erik Steven Breidinger
Graduate Theses and Dissertations
This dissertation develops and tests a comparative heuristic device called optimal autonomy to explain when and how autonomous territories, or simply autonomies, become durable components of the global system of sovereign states. Drawing on a mixed‑methods case study of Denmark and the Faroe Islands, the study operationalizes optimal autonomy as a heuristic device using three interacting metrics: territorial delineation, national distinction, and state dependence. Using semi‑structured interviews with public officials and a mental‑mapping experiment with university students, this research shows that optimal autonomies are not made from single institutional designs but rather a dynamic equilibrium between maximal territorial delineation, medial …
Sigesn-Based Lasers On Silicon For Mid-Infrared Optoelectronics, Sudip Acharya
Sigesn-Based Lasers On Silicon For Mid-Infrared Optoelectronics, Sudip Acharya
Graduate Theses and Dissertations
Germanium-tin (GeSn) alloys represent a significant advancement in semiconductor technology, particularly for applications in the short-wave and mid-infrared (SWIR and MIR) spectral ranges. As a group IV material system, these alloys offer a unique combination of tunable optoelectronic properties and full compatibility with established silicon-based manufacturing processes. The controlled incorporation of tin into germanium enables the engineering of a fundamental direct bandgap, a critical feature that distinguishes GeSn from its indirect bandgap materials, silicon and germanium. This direct bandgap behavior which was demonstrated in high-quality single crystalline GeSn alloys around the year 2015 is the foundation for efficient light emission …
“We Have The Right To Education”: Exploring Student Experiences, Disability Policy, And The Need For Culturally Refined Awareness Raising On Inclusive Higher Education Within The English-Speaking Caribbean, Kadesha Treco
Graduate Theses and Dissertations
Within the English-speaking Caribbean, research at the intersection of inclusive education policy and higher education (HIED) remains limited. Despite the ratification of the United Nations Convention on the Rights of Persons with Disabilities (2006) by countries across the region, the establishment of the CARICOM Special Rapporteur on Disabilities, and the creation of several pieces of national disability legislation, there is little evidence regarding the effectiveness of these initiatives at improving access to HIED. Therefore, this dissertation contributes to regional scholarship on inclusive education by examining how access to, and experiences within HIED institutions are shaped for students with disabilities. This …
Advancing Social Media Analytics And Personalized Generation Via Transfer Learning, Discourse-Aware Modeling, And Collaborative Modeling, Gibson Nkhata
Graduate Theses and Dissertations
Social media platforms have become central to information exchange, shaping public opinion across social, political, and economic domains. However, the massive volume of user-generated content, combined with its informal, nuanced, and often noisy nature, presents significant challenges for automated analysis and generation. Tasks such as stance detection, rumor verification, and personalized content generation are further complicated by sarcasm, evolving discourse structures, and diverse user preferences. Addressing these challenges requires models that can effectively leverage linguistic nuance, conversational dynamics, and collaborative user signals. Transfer learning has emerged as a powerful paradigm for improving performance in low-resource and complex language understanding tasks. …
Identifying Muscle Health Deficits Among Older Adults With And Without Cognitive Impairment, Ray Guerreros Urbina
Identifying Muscle Health Deficits Among Older Adults With And Without Cognitive Impairment, Ray Guerreros Urbina
Graduate Theses and Dissertations
Age-related declines in skeletal muscle health (SMH) and cognitive function are major contributors to disability, loss of independence, and reduced quality of life among older adults. Emerging evidence suggests that skeletal muscle and cognitive health may be interconnected through shared physiological mechanisms; however, the relationships between specific aspects of SMH and cognitive performance remain unclear. Therefore, the purpose of this study was to examine the relationships between SMH and cognitive performance among older adults and to determine whether SMH differs between cognitively healthy and cognitively impaired individuals after accounting for age and physical activity. A cross-sectional analysis was conducted using …
Effectiveness Of Pcit With Toddlers In A Community-Based Sample: Special Considerations For Youth With Neurodevelopmental Conditions, Rebecca Scott Bradley
Effectiveness Of Pcit With Toddlers In A Community-Based Sample: Special Considerations For Youth With Neurodevelopmental Conditions, Rebecca Scott Bradley
Graduate Theses and Dissertations
The early caregiving environment serves as the context in which young children develop emotional regulation abilities. While supportive, responsive caregiving is crucial for helping children regulate their own emotions in times of stress, disruptions to the parent-child relationship may set the stage for poor emotion regulation throughout childhood. Emotional and behavioral problems, particularly in children with neurodevelopmental conditions, may stem from early difficulties with emotion regulation. If left untreated, emotion dysregulation in children can mark a trajectory towards continued social-emotional concerns and family disruption; as such, the toddler years represent an ideal time for intervention. Parent-Child Interaction Therapy for Toddlers …
Integrated Sensing And Communication For Uavs With Oddm Waveforms, Mohammad Abdul Mobin
Integrated Sensing And Communication For Uavs With Oddm Waveforms, Mohammad Abdul Mobin
Graduate Theses and Dissertations
A new delay-Doppler (DD) integrated sensing and communications (ISAC) framework is proposed for unmanned aerial vehicle (UAV) systems. In the DD-ISAC framework, both sensing and communications are performed by using the orthogonal delay Doppler division multiplexing (ODDM) waveforms, which unify sensing and communication designs through their unique properties, such as local bi-orthogonality and dual-resolution in the DD domain. Specifically, the dual-resolution property enables the generation of delay-Doppler map for accurate and low complexity sensing, and the bi-orthogonality minimizes interference for both sensing and communications. The ODDM waveforms are used in combination with the phase comparison monopulse technique and a scaled …
Black Americana: Packaging Black Critique For White Consumption, Sean Bloemetjie
Black Americana: Packaging Black Critique For White Consumption, Sean Bloemetjie
Graduate Theses and Dissertations
In this project, I extend the theorization of Black Americana, a conservative, racialized mass media project where Black celebrities, through the assertion of the American-ness and promotion of the American empire, engage in the containment of Blackness and Black people. Historically, Black Americana was conceptualized by Michele White around the online marketplace for racist, caricatured, slavery-era memorabilia, but I argue that this practice has morphed and evolved into a prominent form of mediated Black subjugation by Black elites. Utilizing Whitney Houston’s performance of the national anthem as a case study, I argue in the introduction that, by insisting upon her …
Towards Audio-Driven Photorealistic Avatars For Teleconsultation: A Development And Evaluation Framework Under Constrained Bandwidth Environments, Fnu Himanshu
Graduate Theses and Dissertations
Telehealth can improve access to healthcare services, especially for patients in rural and underserved areas. Many telehealth services use video communication to provide real-time interaction and a visible connection between patients and healthcare providers. However, video communication requires continuous transmission of audio and video data. When network conditions are limited or unreliable, audio and video interruptions can reduce communication quality. This thesis explores an audio-driven photorealistic avatar as a possible visual communication layer for teleconsultation without requiring continuous webcam video transmission. It develops two connected frameworks: the Audio-Driven Photorealistic Avatar Communication Framework and the Evaluation Framework. The Audio-Driven Photorealistic Avatar …
A Systems Analysis Of Autonomous Uav Swarm Spraying For Precision Agriculture, Ryker Davis
A Systems Analysis Of Autonomous Uav Swarm Spraying For Precision Agriculture, Ryker Davis
Graduate Theses and Dissertations
The application of Unmanned Aerial Vehicles (UAVs) in civilian sectors, particularly for precision agriculture and targeted aerial spraying, has rapidly evolved from passive monitoring to advanced, autonomous, multi-agent coordination. While deploying UAV swarms offers a promising solution to the payload and battery endurance limitations of single drone operations, realizing field-scale coverage introduces significant logistical and safety challenges. To evaluate the trajectory and viability of swarms, this study synthesizes bibliometric trends, operational simulation, and safety reporting analysis. First, because physical testing of complex swarms poses financial and safety risks, we developed an agent-based and discrete event simulation to evaluate autonomous spraying …
Nitrogen Use Efficiency Of Rice Expressing Arabidopsis Thaliana Dreb1a Gene, Yanis Anetha Vasquez Valdes
Nitrogen Use Efficiency Of Rice Expressing Arabidopsis Thaliana Dreb1a Gene, Yanis Anetha Vasquez Valdes
Graduate Theses and Dissertations
Rice is a globally consumed crop and feeds more than half of the world’s population. Nitrogen (N) fertilization is required for increasing rice crop production and yield, but producers often overuse N fertilizers, exceeding plant uptake capacity. Around 40% of the applied N is lost through volatilization and denitrification to the environment, causing algal bloom formation, greenhouse gas emissions, and water pollution. Therefore, improving nitrogen use efficiency (NUE) in rice has become a principal objective to achieve sustainable agriculture. NUE is a complex trait in rice that coordinates three processes: nitrogen uptake, transport and assimilation, which together support photosynthesis, biomass …