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Design And Performance Overview Of The Inaugural University Of Arkansas Beng Fountain Wars Team, Autumn Jones

Biological and Agricultural Engineering Undergraduate Honors Theses

This honors thesis describes the engineering design process for the first ASABE Fountain Wars submission by a student team at the University of Arkansas in over a decade. Fountain Wars has a technical and aesthetic task, and the focus of this thesis is the design of the technical task. In 2025, this task was the “shoot out.” The objective was to get objects from a small pool into two 5-gallon buckets 10-15 feet away. The power for initiating the launch had to be provided by the pump. The objects were required to start at the surface of the water.

The …

Dried Water Treatment Residuals Might Be An Option To Reduce Soluble Reactive Phosphorus Release From Soils, Katie B. Mckay

Biological and Agricultural Engineering Undergraduate Honors Theses

Nonpoint source pollution from agricultural landscapes contributes to freshwater eutrophication, with legacy phosphorus (P) in soils potentially driving soluble reactive phosphorus (SRP) losses to surface waters. The objectives of this study were to evaluate SRP adsorption by dried water treatment residuals (WTRs) produced by Beaver Water District, quantify reductions in soil SRP release across increasing WTR application rates, and compare dried WTR performance to prior WTR studies.

Dried WTRs (~98% solids) were assessed using batch sorption experiments and soil core incubations. Phosphorus sorption was measured by mixing WTRs with CaCl₂ solutions containing increasing SRP concentrations and fitting results to …

Monitoring Streambank Morphology Using Iphone Lidar Technology, Lily C. Stitt

Biological and Agricultural Engineering Undergraduate Honors Theses

Monitoring stream morphology is crucial for maintaining the health and safety of fluvial environments, particularly as these naturally dynamic systems are shifted out of equilibrium due to climate and land-use change. Quantifying changes in stream geometry are useful for infrastructure design, water quality assessment, water resource management, and stream restoration, among other applications. Traditional stream surveying methods contain numerous cost limitations that inhibit affordable and accessible stream surveying needed for evaluating stream geometry with high accuracy and larger spatial scales (>100s of ). In recent years, several advancements have been made in the use of Light Detection and Ranging …

Cross-Facility Reliable Deep Learning Based Beef Marbling Assessment Via Unsupervised Domain Adaptation Regression, Samuel Vinson

Biological and Agricultural Engineering Undergraduate Honors Theses

Inconsistent quality grading in beef production leads to inefficiencies, economic disparity, and consumer mistrust. While USDA meat grading traditionally relies on skilled visual inspectors, these human evaluations suffer from cross-facility variability and subjectivity. This paper introduces the first known application of unsupervised domain adaptation regression for cross-facility beef marbling score prediction—an innovation that improves generalization across diverse environments in the beef supply chain. Utilizing numerical scores ranging from 100-900, the research employed convolutional neural networks (CNNs), including ResNet, VGG, and AlexNet architectures. The study specifically introduced and validated a unified unsupervised domain adaptation regression method using the ResNet-50 architecture to …

Uav-Based Sensor Integration For In-Situ Lake Water Quality Monitoring, Alec R. Campbell

Biological and Agricultural Engineering Undergraduate Honors Theses

Surface water monitoring is often constrained by limited spatial and temporal coverage due to the labor-intensive nature of traditional sampling methods, particularly in environments that are difficult to access or pose safety risks. Unmanned aerial vehicles (UAVs) offer a promising solution by enabling more frequent, spatially distributed, and cost-effective data collection. This study presented the design, development, and field evaluation of a UAV-based system for real-time, in-situ water quality monitoring. The system integrated multiple sensors, including oxidation-reduction potential (ORP), RGB spectrometry, pH, electrical conductivity (EC), dissolved oxygen (DO), and a multispectral spectrometer within a UAV platform.

Field testing was conducted …

Per- And Polyfluoroalkyl Substances (Pfas) In Cave And Withrow Springs, Arkansas, Luke A. Ahlemeier

Biological and Agricultural Engineering Undergraduate Honors Theses

The class of chemicals known as Per- and Polyfluoroalkyl Substances (PFAS) are believed to be widespread in the natural environment, but the full extent of PFAS prevalence is not well understood, particularly in karst springs. The objectives of this study were to (1) collect water samples from Cave Springs and Withrow Springs, Northwest Arkansas, (2) measure for concentrations of 40 PFAS compounds using EPA Method 1633, and (3) compare differences in PFAS concentrations and discuss potential sources of PFAS for each spring. Each spring was sampled on September 29, 2025, October 13, 2025, and November 10, 2025, and water samples …

A Systems Approach To Nitrogen Fertilizer Management: Modeling Emissions And Runoff Pathways In Arkansas Agriculture, Avonelle Lindon

Biological and Agricultural Engineering Undergraduate Honors Theses

Nitrogen fertilizer management is a critical challenge in modern agriculture. This thesis develops a system dynamics model of nitrogen in Arkansas rice and corn systems to explore barriers to translating agricultural research into practical farmer guidance.  The modeling process revealed key challenges: (1) scarcity of Arkansas-specific factors and best management practice (BMP) effectiveness data; (2) tension between model comprehensiveness and accessibility; (3) misalignments in conservation incentive structures; and (4) difficulty in validating models without field measurements. The resulting model demonstrates basic nitrogen cycle processes and BMP integration, but validation against published literature revealed significant issues with predictive accuracy. These findings …

Preserving The Past: Exploring The Last Frontier's Ecosystem Shifts And Biodiversity Of The Tallgrass Prairies, Gisell Maldonado, Amelia Villaseñor

Anthropology Undergraduate Honors Theses

In North America, grasslands are a cornerstone of the environment. Historically, the tallgrass prairie was expansive and reached from Manitoba in Canada to Texas. Today this unique ecosystem is highly fragmented and reduced, but it remains an important ecosystem for biodiversity and cattle management. While there are many complex ecological interactions in the prairie, recent research shows that large herbivores are vital in maintaining grasslands through grazing and other behaviors that reduce woody encroachment and support nutrient cycling. Here, we examine cow and bison dietary behaviors and connect these to the ecosystem services provided by these large herbivores. In the …

Primate Craniofacial Trauma And Its Relationship To Socioecological Factors, Kaitlyn Harden R. Harden

Anthropology Undergraduate Honors Theses

Postmortem analysis of the skeleton can reveal patterns of trauma that have accumulated over an individual’s lifetime. Patterns of trauma within a species can also provide key insights into how that species lived and reflect aspects of their socioecology and life history. Research has been conducted often on postcranial trauma, but is rare regarding the craniofacial region and has not been examined broadly across primates. To fully understand patterns of trauma in primates, rates of trauma must be compared and placed into context of a variety of socioecological factors. To do so, I examined hypotheses including that species with higher …

Foraging Plasticity And Mercury Contamination In Red-Legged Kittiwakes: A Multiple Stressor Perspective, Sam E. Clay

All-Inclusive List of Electronic Theses and Dissertations

Arctic seabirds are facing increasing stress from climate change, yet the interactive effects of multiple stressors on behavior remain poorly understood. Adopting a multiple stressor perspective promises to advance understanding of avian behavioral responses to climate change, as climate change is exposing Arctic and subarctic animals to a complex set of stressors rather than a single stressor in isolation. Using the red-legged kittiwake (Rissa brevirostris) as a model, I examined how multiple stressors, including mercury (Hg) exposure, shifting wind conditions, and varying foraging conditions linked to sea surface temperature (SST) may interact to constrain behavioral plasticity and energetically expensive behavior …

Reconstruction Of Fox Transcription Factor-Regulated Subnetworks Mediating Cardiac Progenitor Cell Divisions, Md Rezaul Hasan

All-Inclusive List of Electronic Theses and Dissertations

Congenital heart disease (CHD) is the most common congenital anomaly worldwide, affecting approximately 1% of live births, corresponding to 1.35 million infants born with CHD each year, and remains a leading cause of infant mortality; therefore, it is urgent to understand the genetic and molecular mechanisms underlying CHD for advancing early diagnosis and treatment. Because many aspects of the Drosophila heart formation are highly reminiscent of vertebrate heart development, Drosophila melanogaster serves as a simple yet powerful model system for studying cardiac development and CHD. While at least eight Forkhead box (Fox) transcription factors (TFs) are required for proper cardiac …

Analysis Of Developmental Cardiogenic Processes Mediated By Fox And Zinc-Finger Transcription Factors, Rajnandani Katariya

All-Inclusive List of Electronic Theses and Dissertations

Cardiogenesis is a highly choreographed biological process requiring the precise integration of gene regulatory networks to govern cell division, fate determination, and spatial positioning. Disruptions in these mechanisms lead to congenital heart defects (CHDs), which affect approximately 1% of live births globally. Due to the evolutionary conservation of cardiac signaling pathways and the structural homologies between the Drosophila dorsal vessel and the early vertebrate heart tube, Drosophila melanogaster serves as a powerful model for dissecting the fundamental mechanisms of heart development. This dissertation investigates the molecular orchestration of cardiac development, specifically focusing on the roles of the transcription factors Jumu …

Dendroclimatic Response Of The Wet Miombo Woodland Species: A Case Study Of Mufulira District, Copperbelt Province, Zambia, Collins Chibuye Malubeni

All-Inclusive List of Electronic Theses and Dissertations

Zambia is a tropical, landlocked country that lies in the South-Central part of Africa. The climate in Zambia includes distinct dry and rainy seasons, mainly influenced by the north-south movement of the Intertropical Convergence Zone (ITCZ), which shifts seasonally. This research is focused on understanding the relationship between tree growth and climate using dendrochronology. Forty-nine tropical species, including Julbernardia paniculata, Brachystegia longifolia, and Pericopsis angolensis, were analysed for dendroclimatic potential, and 70% showed clear ring formation, indicating that trees in this locality produce distinct annual ring boundaries. For the single species chronology, thirteen cores from eight trees that were initially …

Analysis Of Volumetric Reconstruction Methods In Archaeology, Cade O'Fallon

All-Inclusive List of Electronic Theses and Dissertations

The use of Structure from Motion (SfM) photogrammetry in archaeological projects is entering a period of transition; a method of producing 3D data that is traditionally embraced as tool for documentation is being explored for its analytic potential. One such way SfM photogrammetry can be used analytically is through the calculation of volumes using photogrammetric data. The tools exist for archaeologists to be able to create and quantify volumetric models; however, the discourse on these methods is still so new there is no consensus on the best method for conducting volumetric work. Different methods of creating and isolating volumetric space …

Microplastic Composition And Exposure Pathways In Freshwater Systems: A Multi-Matrix Comparison Between Streams And Retention Ponds In Hamilton County, In, Mya Whaley

All-Inclusive List of Electronic Theses and Dissertations

Since the early 1900s, the use of plastics has increased exponentially. The breakdown of plastic materials has exposed all ecosystems to microplastics (small particles of plastic < 5 mm), which are now ubiquitous in natural settings. Microplastics have a relatively large surface area, and many chemicals adsorb to these small particles, impacting their fate and transport of pollution. While microplastics have been found in virtually every setting on Earth, research is necessary to understand their impact on freshwater ecosystems and biogeochemical cycles. The focus of this research was to investigate microplastic compositions in crayfish, sediments, and water samples collected in streams and retention ponds. We analyzed trends in microplastic counts across different land-cover classes, waterbody types, and species, and compared concentrations among matrices to improve our understanding of microplastic exposure pathways in freshwater ecosystems. As a secondary objective, lead and arsenic concentrations were analyzed from sediment samples to investigate metal burdens and compare them to microplastic concentrations. Our findings revealed that, in general, urban streams had the highest microplastic concentrations within land cover categories, and retention ponds had higher microplastic counts than streams. Crayfish, such as F. rusticus had higher microplastic concentrations than F. virilis and F. propinquus, although these results may be influenced by study design. The most common microplastic type was fibers, and most common color was transparent. There was no significant correlation between microplastic and metal concentrations in sediments. We found crayfish to be adequate bioindicators of microplastic pollution, because they were less impacted by environmental variability than sediment and water samples. This research presents the first evidence of microplastics in our study species, F. propinquus, F. rusticus, and F. virlis. This work presents new evidence of microplastic accumulation in crayfish, sediments, and water from freshwater systems in the Midwestern United States. Microplastics were found in every sample type—crayfish, water, and sediment—across urban, rural, and forested landscapes, highlighting their pervasive distribution. The findings provide foundational data for assessing emerging ecological and human-health risks and emphasize the importance of sustained monitoring and research on MP contamination in freshwater environments.

The Impact Of Quantum Computing And Distributed Ledger Technology On Accounting/Auditing/Finance Systems, Ulingeta O. L. Mbamba

Business Management Review

The integration of Quantum Computing (QC) and Distributed Ledger Technology (DLT) is poised to fundamentally reshape modern accounting by transforming how financial data is processed, secured, and verified. QC, utilising qubits, will exponentially enhance data analytics, risk assessment, and real-time financial forecasting, accelerating complex auditing tasks far beyond the capabilities of classical systems. In parallel, DLT, such as blockchain, provides a decentralised, immutable record of transactions, significantly increasing transparency and trust. This synergy may enable real-time analysis, continuous auditing, and intelligent automation, converting traditional static, centralised processes into dynamic, transparent ecosystems. Together, this convergence may redefine accounting, auditing, and finance, …

Targeted Epigenome Sequencing Of Eosinophils Reveals Cpg Sites And Regulatory Variants Associated With Asthma., Rébecca Dionne-Gagné, Anne-Marie Madore, Anne-Marie Boucher-Lafleur, Tomi Pastinen, Catherine Laprise

Manuscripts, Articles, Book Chapters and Other Papers

Eosinophils are pro-inflammatory cells that play a central role in asthmatic inflammation. However, few studies have examined their methylation profiles in asthma, all relying on microarray-based approaches. Here, an epigenome-wide association study in 183 purified eosinophil samples from the Saguenay-Lac-Saint-Jean asthma family cohort was performed using a custom sequencing panel targeting 4,609,564 CpGs in immune regulatory regions. Two CpG sites in MAEA and SLC9A2 genes, known to be involved in immune function, were significantly associated with asthma, while five additional sites showed suggestive associations. Integration with genotype data (7,829,429 variants) and expression counts (17,513 genes) identified significant quantitative trait loci-mediated …

Treatment Of Haemophilia A Without Inhibitors: Real-World Treatment Patterns And Clinical Outcomes In The Us., Allison P. Wheeler, Lauren Amos Md, Shveta Gupta, Sylvie Bozzi, Gandarvaka Miles, Kalyani Hawaldar, Andrew Wilson, Gillian Hanson, Emily Cibelli, Amanda Wilson, Siddhi Umarje, Anne-Laure Tardy, Jennifer Dumont, Graham Neill, Alix Arnaud

Manuscripts, Articles, Book Chapters and Other Papers

INTRODUCTION: Despite available prophylactic therapies for haemophilia A, breakthrough bleeding and consequent pain and joint damage still occur.

AIM: To provide insights into the unmet treatment needs of people with moderate-to-severe haemophilia A in the US.

METHODS: For this descriptive, observational cohort study, eligible participants diagnosed with moderate-to-severe haemophilia A were enrolled in the PicnicHealth database on or before 3 October 2022. Three patient groups were established to identify: (1) treatment patterns; (2) clinical outcomes by therapy class (standard half-life [SHL] factor VIII [FVIII]; extended half-life FVIII [EHL]; emicizumab); (3) health-related quality of life (HRQoL) using the Patient-Reported Outcomes Measuring …

Promises, Pitfalls, And Paths Forward For The Pediatric Research Equity Act., Alexa L. Pagano, Danielle J. Green, Jennifer Goldman, Anjali Deshmukh

Manuscripts, Articles, Book Chapters and Other Papers

IMPORTANCE: Since its enactment in 2003, the Pediatric Research Equity Act (PREA) has significantly increased the number of pediatric drug studies performed and expanded pediatric drug labeling. Despite these advancements, many drugs used in children still lack pediatric-specific US Food and Drug Administration (FDA) labeling, even when pediatric studies are required by law. Recent legislative changes strengthened the FDA's enforcement authority over PREA. As these changes are implemented, persistent gaps in pediatric drug development warrant examination. Addressing these gaps may help ensure that children are systematically included in clinical research and that medications used in children are supported by rigorous …

Student Engagement As A Predictor Of Stem Student Success, Mosab Shaher Abu Al Foul

Theses and Dissertations

This quantitative study investigates factors influencing engagement, persistence, and degree completion among underrepresented minority (URM) students in science, technology, engineering and math (STEM). Guided by Tinto’s Interactionist Model (1975) and Bandura’s Self-Efficacy Theory(1977), it examines how institutional practices and socioeconomic conditions contribute to inequities in student outcomes. Using a non-experimental, correlational design, the study analyzes National Survey of Student Engagement (NSSE) data and institutional records from a Midwestern Research 2 university (N = 620; URM subsample n = 52). Binary logistic regression, MANOVA, and t-tests were used to assess relationships among High-Impact Educational Practices (HIEPs), engagement indicators, faculty interaction, pre-college …

Climate Messages In An Ai-Integrated Experiment: Interpretive Divergence, Policy Support, And A New Resonance Consistency Framework, Jayme Colosimo

Theses and Dissertations

This dissertation examined how environmental frames—particularly “Mother Earth” and “Mother Nature”—influence public support for climate policy and how these effects differ across demographic groups. Using a mixed-methods explanatory sequential design, the study executed a media survey experiment (N = 470) followed by semi-structured expert interviews to assess responses to two primes using a conventional corporate media message, and a message with similar content that was generated by Artificial Intelligence (AI).

Quantitative findings showed that these metaphors generated uneven and sometimes divergent priming effects. Some groups—most notably White male Republicans—reported higher support for environmental policy under the conventional media prime. Under …

Modeling Type 2 Diabetes Progression, Hereditary Risk, And Treatment Outcomes: Integrating Prevention, Lifestyle Modifications, And Pharmacological Interventions, Grace Ebunoluwa Fatoyinbo

Theses and Dissertations

Type 2 diabetes (T2D) remains one of the most significant chronic health conditionsworldwide and continues to place pressure on healthcare systems through its long-term complications, treatment costs, and growing prevalence. The progression of T2D is influenced by multiple interacting factors, including hereditary predisposition, lifestyle behavior, treatment access, remission, relapse, and the development of complications. Because of this complexity, mathematical models can provide useful insight into disease dynamics and the possible effects of intervention strategies over time. This study develops a compartmental model for T2D progression using a system of ordinary differential equations. The population is divided into epidemiologically meaningful classes …

Open Chromatin-Guided Analysis Of Cell-Free Dna For Inferring Regulatory Landscapes In Cancer Detection, Monitoring, And Therapeutic Response, Sakuntha Devaka Gunarathna

Theses and Dissertations

Conventional cancer diagnosis and monitoring rely on imaging and tissue biopsies. Imaging is constrained by resolution, while biopsies are invasive, limited in capturing tumor heterogeneity, and challenging to perform repeatedly over time. Liquid biopsy has emerged as a minimally invasive alternative that enables real-time assessment of tumor-derived material in circulation. Among its components, cell-free DNA (cfDNA) has gained significant attention as a promising biomarker for cancer detection and disease monitoring. However, most current cfDNA approaches rely on mutation- and methylation-based signals, which, while informative, can be limited by low tumor fraction, biological heterogeneity, and reduced sensitivity in early-stage disease. In …

A Life Cycle Assessment Of Cotton And Hemp As Textile Fibers, Emalie Johnson

Theses and Dissertations

Garment consumption is on the rise. With an increase in resource use, there will beobservable impacts. This study focused on the environmental impacts from garment production, specifically from natural fibers – cotton and hemp. Using the program SimaPro, a life cycle assessment (LCA) was conducted from cradle to consumer. The LCA included fiber cultivation, textile production, and consumer use phase for a t-shirt, one made from cotton and one made from hemp. A survey was distributed among the University of North Dakota’s student and faculty population to gather data on consumer use behaviors, including shopping, laundry, and discard habits. The …

The Primary Care Experiences Of American Indian Patients Diagnosed With Opioid Use Disorder (Oud), Frank Johnson Jr.

Theses and Dissertations

This study utilized descriptive phenomenology to describe the lived experiences of AmericanIndian patients diagnosed with opioid use disorder (OUD), when they visit their primary care provider. The specific aims were to: 1) describe what was beneficial when visiting their provider; 2) describe what was detrimental when visiting their provider; and 3) provide recommendations for improving primary care services. Twelve participants were interviewed and the essence of the phenomenon emerged as “the interaction between the provider and patient”. A model was created. The constituents of the essence were beneficial interactions and detrimental interactions. The major themes that emerged from beneficial interactions …

Redox-Driven Wettability In Underground Hydrogen Storage: Linking Geochemical Speciation, Surface Charge, And Contact Angle, Ijaz Khan

Theses and Dissertations

Underground hydrogen storage (UHS) depends on complex interactions among reservoir rocks, brine, and gas under redox conditions induced by H2 injection. Although wettability is often treated as a static parameter, redox reactions can shift pH, aqueous speciation, and mineral surface charge, thereby altering contact angles and, consequently, injectivity, trapping, and recovery. This work tests the hypothesis that dominant redox pathways in saline aquifers and depleted reservoirs, specifically Fe(III) and sulfate reduction, systematically modify mineral surface stability and charge, producing predictable shifts in wettability. To address this, we developed a physics-guided machine learning workflow that integrates mechanistic geochemical understanding with empirical …

Biomanufacturing Of Carbon-Based Fuel & Chemical Products And Beccus Solutions For De-Carbonization In Texas And The Gulf Coast, Darrell Mayon

Theses and Dissertations

This research investigates the integration of advanced biomanufacturing technologies and Bioenergy with Carbon Capture, Utilization, and Storage (BECCUS) systems to decarbonize fuel and chemical production in Texas and the Gulf Coast. The region, which leads the United States in petroleum refining, petrochemical manufacturing, and CO₂ transportation infrastructure, represents both a major source of greenhouse gas emissions and a strategic opportunity for large scale carbon mitigation. While bio-based chemicals such as bioisoprene are technically feasible and demonstrate significantly lower life cycle greenhouse gas intensities compared to fossil based counterparts, their commercial deployment remains constrained by economic and systemic barriers. The central …

Flipping The Odds: At-Risk Students’ Perceptions Of The Benefits Of The Flipped Classroom Model In High School Mathematics, Roberto Alonzo Moedano

Theses and Dissertations

High school educators tasked with teaching and learning are often challenged to find ways to keep students engaged and ensure they are learning content. However, the COVID-19 pandemic that the United States experienced from 2020 to 2023 (Northwestern Medicine Staff & Northwestern Medicine, 2025) made educators’ efforts more difficult. This unprecedented time of remote teaching and learning transformed the educational landscape overnight. It removed face-to-face learning and replaced it with virtual classes—neither teachers nor students were prepared for the challenges. This research study examines how a flipped classroom approach has the potential to yield positive results at the high school …

Thriving Within Digital Learning Courses: Examining The Influence Of Interactions In Kinesiology Undergraduate Students, Jimmy J. Morin

Theses and Dissertations

The expansion of online and hybrid education has reshaped higher education, particularly in applied fields such as kinesiology that emphasize hands-on learning. Despite this growth, limited research has examined how specific interaction types (academic, social, and deeper life) contribute to student thriving in digital environments. This dissertation explored how interactions with faculty, staff, and peers influence holistic student success in online and hybrid kinesiology programs utilizing a three-paper dissertation approach to address this gap through complementary methods. Paper 1 synthesizes existing literature on student interactions and thriving in digital learning contexts. Paper 2 uses one-way ANOVA and ANCOVA to examine …

Mechanistic Insights Into Hla-Dependent Tumor Microenvironment Modulation And Tcr Vβ Activation Induced By Staphylococcal Enterotoxin I And Staphylococcal Enterotoxin G In Melanoma, Abiola Michael Sholarin

Theses and Dissertations

Immunotherapies have transformed cancer treatment by enabling durable antitumor responses through targeted activation of the immune system. Among the most potent immune-stimulatory molecules are bacterial superantigens, which activate large fractions of the T-cell repertoire through simultaneous binding of major histocompatibility complex (MHC) class II molecules and conserved regions of the T-cell receptor (TCR) β-chain. Because these interactions are strongly human MHC–restricted, HLA-transgenic mouse models are essential for evaluating the therapeutic potential and safety of superantigen-based immunotherapies.This dissertation investigates the antitumor activity and mechanisms of action of two superantigens encoded within the Staphylococcus aureus enterotoxin gene cluster—Staphylococcal enterotoxin I (SEI) and …