Digital Commons Network^™

Domain Decomposition For Coupled Systems Of Fluid-Structure Interaction And Numerical Modeling For Thin Film Polymers, Amy De Castro

All Dissertations

We consider two primary areas of physical application in this work: fluid interaction systems with either linear elastic structures or with poroelastic structures, and thin film polymers, where the majority of the work focuses on the fluid-structure interaction systems.

In the first chapter, we present a strongly coupled partitioned method for fluid structure interaction (FSI) problems based on a monolithic formulation of the system which employs a Lagrange multiplier (LM). We prove that both the semi-discrete and fully discrete formulations are well-posed. To derive the partitioned scheme, a Schur complement equation, which implicitly expresses the Lagrange multiplier and the fluid …

Investigate The Use Of Nucleic Acids As Pesticides To Manage Major Pests And Pathogens Of Crops In South Carolina, Prasanna Valavanur Shekar

All Dissertations

The sugarcane aphid (SCA, Melanaphis sorghi), first discovered on grain sorghum in late 2013, has gradually become a major insect pest of sorghum. It inflicts significant damage to the crop year after year, causing millions of dollars in losses throughout the sorghum-producing regions of the United States. Similarly, Armillaria root rot—also referred to as oak root rot—is a major cause of decline in peach (Prunus persica) production in the southeastern United States. This disease is caused by Armillaria mellea and Armillaria tabescens. Current management practices for controlling M. sorghi include the use of synthetic pesticides, resistant varieties, and regular scouting. …

Enhancing Photovoltaic Inverter Reliability Through Advanced Hardware Protection And Simulation Techniques, Buck Brown

All Dissertations

Power electronics converter reliability is an issue in today’s grid, and it is an issue that will only become more prevalent as the nation and world move toward greater renewable energy penetration. While a significant amount of research has been conducted pertaining to power electronics converter reliability, (1) there lacks a universal way to protect the most critical component in a power electronics converter—the power device—from the two most common failure modes—short- and open-circuit faults; and (2) there does not exist a tool that considers both the component- and system-levels of a photovoltaic (PV) inverter for the purposes of lifetime …

Design And Characterization Of Lignin-Based, Thermoresponsive Soft Composites With Improved Mechanical And Transport Properties, Missoury D. Wolff

All Dissertations

In an attempt to reduce reliance on petroleum-based polymers, lignin – an abundant biopolymer – has gained popularity as a sustainable alternative. However, research on lignin-containing soft composites – i.e., hydrogel (bio)composites – has largely been heuristic, providing limited insight into the fundamental structure-processing-property relationships that govern performance improvements in this emerging class of ‘green’ soft composites. As such, this dissertation presents a systematic investigation of how lignin molecular weight (MW), composite composition, and the concentrations of crosslinker and accelerator impact the mechanical and transport characteristics of soft composites composed of lignin, poly(N-isopropylacrylamide) (PNIPAm), and poly(vinyl alcohol) (PVA).

In the …

Understanding Conversion Of Long Chain Fatty Acids In Anaerobic Digestion Systems, Julia Ann Funk

All Dissertations

Anaerobic co-digestion with fats, oils, and grease (FOG) waste can increase energy production due to the high methane potential of lipids. However, adding FOG can lead to operational issues caused by accumulating saturated long-chain fatty acids (LCFA). My research explored why saturated LCFAs are often the primary intermediate that accumulates and the microbial sensitives of the populations responsible for their degradation. In each batch or semi-continuous experiment, all intermediates of FOG degradation, including LCFAs, volatile fatty acids (VFAs), Hydrogen gas (H₂), and endpoint methane production, were paired with temporal quantitative polymerase chain reaction (qPCR) of the Syntrophomonas genus …

Enhancing Safety In Healthcare Construction: A Comprehensive Training Program On Managing Construction Dust, Melissa Nalath

Capstone Experience: Master of Public Health

In healthcare settings, construction activity poses significant risks due to the formation and release of construction dust containing allergens, pathogens, and toxic substances. This culminating project will develop a comprehensive training course for contractors to mitigate these risks while ensuring the safety of patients, employees, and construction workers. The training programs will raise awareness of the health risks associated with construction dust and educate contractors on proper dust handling techniques and ensure compliance with relevant regulations. Key elements such as containment, ventilation, and proper personal protective equipment (PPE) use will be emphasized. The program will also underscore the potential for …

A Landscape Analysis Of Rapid Evidence Curation During The 2022 Sudan Virus Disease Outbreak In Uganda, Jemimah J. Wachap

Capstone Experience: Master of Public Health

Uganda's 2022 Sudan Virus Disease (SVD) outbreak emphasized the need for rapid and effective evidence curation in public health emergencies. This analysis examines evidence curation practices during the SVD response, identifying challenges and assessing the timeliness and effectiveness of strategies in low-resource settings. While global responses to previous outbreaks, like COVID-19, have advanced evidence synthesis, the SVD outbreak revealed infrastructure and data integration gaps. The study aims to map the evidence curation landscape, focusing on models and tools, such as data-sharing platforms, mobile Polymerase Chain Reaction (PCR) labs, and Integrated Management Systems (IMS). It will also address gaps in surveillance, …

Novel Corporate Governance Structures, Jennifer S. Fan, Xuan-Thao Nguyen

Articles

Artificial Intelligence (“AI”) startups have taken center stage, rapidly disrupting conventional industries at an unprecedented pace with their groundbreaking innovations. Hailed by many as the most significant technological advancement of our era, AI’s profound societal impact has garnered heightened public and governmental scrutiny. The spotlight has recently fallen on OpenAI, the creator of ChatGPT, which weathered a tumultuous period marked by the ouster and subsequent rehiring of CEO Sam Altman, a board reconfiguration, and Altman’s later return to the board. Concerns over AI safety were offered as the rationale for the tandem corporate governance structure of nonprofit and for-profit at …

Investigation Into The Microbiome Of Blow Fly Eggs Using Microseqtm Id, Samantha S. Davis, Drusilla Sheridan, Jennifer Rosati

Undergraduate Research

There is little published research characterizing the microbiome associated with blow fly eggs and how they may affect the colonization behaviors of certain blow fly species. Once deposited, blow fly eggs are rapidly introduced to a diverse range of microorganisms, which can vary depending on the species of blow fly, the environment, and the decomposition stage of the substrate (Junqueira et al., 2017). Since blow flies are among the first insects to colonize decomposing remains, the microbial communities present on their eggs could serve as key indicators of the decomposition stage at the time of egg-laying, thus providing a potential …

Deleting Values May Either Increase Or Decrease Variance, David L. Farnsworth

Articles

The impact upon variance when a value is deleted is addressed. It is shown that the cutoff for the deleted value yielding an increase or a decrease in variance is approximately one standard deviation from the mean for a univariate random variable with equally distributed probability on a finite set of elements and for a univariate set of observations. The influence of truncation of the domain for such a discrete random variable and for observations is considered.

2025 May 1 - From My Notepads Newsletter, Office Of The President, East Tennessee State University, Brian Noland

From My Notepads: A Newsletter from President Brian Noland

No abstract provided.

A 360 Perspective About Corporate Finance, Braden C. Fancher

Finance Undergraduate Honors Theses

This thesis provides a comprehensive reflection on the author's experience in the “Finance 360” rotational internship program at Burns & McDonnell, a program designed to expose interns to the diverse functions within a corporate finance and accounting department. Over the course of 10 weeks, the author completed 12 different rotations, gaining hands-on experience across various financial disciplines. This paper highlights five rotations—Operational Financial Analysts, Financial Analytics, Internal Audit, Project Accounting, and Investments—that had the greatest impact on reshaping the author’s understanding of corporate finance. These experiences revealed the deep integration of finance with accounting, analytics, and strategic decision-making, far beyond …

Small Business Development In The Tourism Industry In Dangriga, Belize, Jonathan R. Kasper

Finance Undergraduate Honors Theses

The thesis, Small Business Development in the Tourism Industry in Dangriga, Belize, examines efforts to bolster economic opportunities and entrepreneurial resilience in a culturally rich but economically underserved town. The project focused on addressing the underperformance of Dangriga’s tourism sector relative to other Belizean destinations, despite its potential. By engaging directly with local entrepreneurs and organizations, the initiative aimed to improve marketing practices, digital presence, and long-term business viability through practical interventions.

Major accomplishments included the development of a reservation-capable website for the Bonefish Hotel, social media and marketing consultations for various small businesses, and advisory work for the …

The Price Of Profit: A Literature Review On Private Equity's Impact On Patient Care And Healthcare Costs, Sahil Shrimankar

Finance Undergraduate Honors Theses

In healthcare, private equity (PE) firms have rapidly expanded their presence across sectors, acquiring and consolidating providers. They typically operate on short investment cycles and employ strategies like heavy debt financing, roll-ups of fragmented practices, and aggressive cost-cutting to maximize returns. This expansion has sparked debate: supporters argue PE provides needed capital and efficiency to struggling providers, while critics contend that profit-driven ownership risks compromising care quality and access. This literature review synthesizes current evidence on how PE’s profit-driven approach affects patient care and healthcare costs. Overall, the findings suggest that PE ownership often raises costs—through higher prices and increased …

The Role Of Social Media In Shaping Investment Trends Among College Students, Catherine C. Hammer

Finance Undergraduate Honors Theses

Social media has become an increasingly influential force in shaping financial behaviors, particularly among younger generations. This study examines the role of digital platforms in financial education, investment decision-making, and market participation among Gen Z and Millennials. Through a comprehensive analysis of existing literature, case studies, and survey data, this research explores the benefits and risks associated with relying on social media for financial guidance. While social media provides unprecedented access to financial knowledge, empowering young investors with real-time market insights and investment strategies, it also presents challenges such as misinformation, speculative trading behaviors, and the rise of unregulated "finfluencers." …

Identifying Novel Molecular Targets To Induce Ferroptosis In Drug-Tolerant Cancer Cells Through Computational Modeling, Haris J. Rana

Biological Sciences Undergraduate Honors Theses

Ferroptosis is an iron-dependent, reactive oxygen species (ROS)-driven form of regulated cell death in which the cell membrane is degraded by lipid peroxidation. It is regulated by multiple enzymes, such as glutathione peroxidase 4 (GPX4), which prevents membrane degradation by reducing lipid peroxides and protecting cells from oxidative damage. When inhibitors like RSL3 target GPX4, lipid peroxides build up, and toxic ROS compromises membrane integrity. Traditional anticancer treatments, such as most chemotherapies, aim to eliminate tumor cells by damaging DNA and triggering apoptosis. However, resistance to apoptosis is a “hallmark of cancer,” often resulting in treatment failure. As a distinct …

Minimizing Uncovered Triples: An Integer Programming Approach To College Football Conference Scheduling, Caleb Mallett

Industrial Engineering Undergraduate Honors Theses

Collegiate football teams often compete in groups of 8-20 teams known as conferences. One such conference, the Atlantic Coastal Conference (ACC), added three new schools for the 2024-25 season, bringing their total to 17 teams. Currently, each ACC team plays eight games against others within the ACC. At the season’s conclusion, the two ACC teams with the best intraconference record compete in a conference championship game. With 17 total teams each playing eight games, the ACC could have a three-way tie for the best record where none of top the three teams play one another. To avoid this situation, we …

Developing 3d-Printed Packaging To Protect Biodegradable Sensors Used For Large-Scale, Efficient Water Quality Monitoring, Han L. Siew

Industrial Engineering Undergraduate Honors Theses

Freshwater degradation due to human activities costs the United States over $2.2 billion annually, highlighting the urgent need for improved water quality monitoring methods. Traditional water sampling techniques are labor-intensive, time-consuming, and reliant on single-use plastics that contribute to environmental pollution. This research aims to address these issues by developing 3D-printed biodegradable sensor packaging for unmanned aerial vehicle (UAV)-assisted water sampling. By utilizing biodegradable materials, the research seeks to create an eco-friendly solution that ensures sensor durability while reducing negative environmental impact. The study will involve adjusting the packaging design to withstand UAV deployment by testing and improving the resistance …

The Church, Transportation, And Race: Education, Involvement, And Advocacy In The Transportation Industry By Churches For The Benefit Of Dallas’ Black Community, Vonciel J. Hill

Doctor of Ministry Projects and Theses

The American transportation industry is an amalgamation of policy, planning, infrastructure, funding, contracting, employment, economic development, legislative enactments, modes [transit, rail air], and roads, highways, and bridges. Each of these components affects the daily lives of ordinary people in multiple ways, including, but not limited to, employment, education, health care, recreation, and finances. Historically, the industry has ignored, jeopardized, and adversely affected Black people, neighborhoods, and communities. Quality of life, as related to transportation, in Black communities has not been and is not now on par with that in white communities. Nevertheless, if one observes the industry, one is hard …

Earthscape Ai Dataset V1.1, Matthew Massey, Abdullah-Al-Zubaer Imran

Research Data--KGS

EarthScape v1.1 Dataset Download Links:

esv1p1_smokeset.zip (197 MB)

esv1p1_splits.zip (2.5 MB)

esv1p1_usa_ky_data.zip (1 MB)

esv1p1_usa_ky_hardin_howevalley.zip (26.3 GB)

esv1p1_usa_ky_hardin_sonora.zip (26.3 GB)

esv1p1_usa_ky_warren.zip (166 GB)

Surficial geologic mapping is essential for understanding Earth surface processes and supporting applications in engineering, hazard assessment, and resource management. However, traditional mapping approaches are labor-intensive, limiting spatial coverage and introducing subjectivity. To address these challenges, we introduce EarthScape, a multimodal, AI-ready geospatial dataset designed for surficial geologic mapping and Earth surface analysis. EarthScape integrates high-resolution aerial RGB and near-infrared (NIR) imagery, digital elevation models (DEM), multi-scale terrain features derived from DEMs, and hydrologic and infrastructure vector …

Ai Is Upending Higher Ed. This Professor Sees A Chance To Reclaim What Matters., University Of Dayton

Blog: The Dayton Engineer

Lecture halls. Credit hours. Rigid curricula. In his new book, University Revolution: Artificial Intelligence and the Transformation of Learning, University of Dayton professor Kevin Hallinan argues that AI isn’t just disrupting higher education — it’s creating space to rediscover its purpose.

Virtually Unheard Of: Why U.S. Courts Needs Rules For Virtual Reality Evidence, Mahin Mughal

North Carolina Journal of Law & Technology

No abstract provided.

The Digital War: How Ai And Blockchain Serve As Catalysts In The Fight Against Human Trafficking, Sanam Sohrabian

North Carolina Journal of Law & Technology

No abstract provided.

Localized Intraarterial Drug Delivery Device, Max P. Green

Biomedical Engineering Undergraduate Honors Theses

Stroke is a prevalent and deadly disorder that causes significant human and economic loss each year. Treatment of stroke is largely done through two routes: intravenous thrombolytic therapy and mechanical thrombectomy. This paper considered a design for a device that combines these two approaches. The device aims to use localized delivery of a thrombolytic agent to a clot site to treat stroke clots. An iterative approach to design was taken to continue to refine device designs generated by previous work. Components, including a balloon for localization, a semi-porous membrane for drug dispersion, and combinations were tested in scaled-up form. Generalizations …

Examining The Effects Of Quercetin On Phenotypic Characteristics Of Human Mesenchymal Stem Cells, Thomas M. Needy

Biomedical Engineering Undergraduate Honors Theses

Introduction A significant obstacle to mesenchymal stem cell (MSC) potency and therapeutic utility is in vitro senescence, an irreversible cessation of replication associated with age-related complications. Senolytic drugs, such as quercetin, may be helpful in selectively culling senescent cells while leaving non-senescent cells unaffected, thereby increasing potency of high-passage MSCs.

Methods The phenotypic, genotypic, and immunomodulatory effects of quercetin were assessed using in vitro models. Senescent cells, created through repeated subculturing of MSCs in vitro, and non-senescent cells were treated with 10 μM quercetin, differentiated into osteocytes, adipocytes, and chondrocytes, and analyzed to observe the effect of quercetin.

Results Quercetin …

Path Tracing And Physically-Based Rendering With Directx Raytracing, Jiabin Wang

Programming Theses and Dissertations

This artifact is designed to simulate global illumination by using DirectX raytracing pipeline. Physically-based Rendering (PBR) and path tracing were integrated to achieve photo realistic rendering effect.

Collective Effervescence As Self-Organization And Enaction, Christian Kronsted

Philosophy Faculty Publications

No abstract provided.

Optimizing Growth Conditions Of Chlorella Algae For Enhanced Biomass And Oxygen Production, Supreme Ogheneovo Oghenerhoro

Master's Theses

Increasing Earth's carbon dioxide (CO₂) levels contribute immensely to global warming. At the same time, future Mars colonization requires innovative systems for oxygen production. This study explores how Chlorella algae can help control environmental challenges on Earth, support life on Mars, and produce biomass as an alternative to renewable energy. Chlorella is known for its high photosynthetic efficiency in capturing CO2 for growth, producing O2 and biomass used for biofuel production. It was studied under varying CO₂ concentrations and pressure conditions. Each experiment was performed using a photobioreactor setup and optimized algae growth conditions. These were assessed to understand its …

Design And Analysis Of An Isolated Resonant Pulsed Dc-Dc Buck-Boost Converter, Edgar Arturo Mora Tena

Master's Theses

This thesis entails the design, modeling, simulation, construction, and analysis of a new isolated DC-DC buck-boost converter with Zero-Current-Switching (ZCS) operation, continuous input current, and a low-side switch to simplify driving requirements. The proposed converter was designed to regulate a 5V output from an input range of 15V-18V, at a rated output power of 20W, and a switching frequency range of 90kHz-500kHz. Software simulations are performed to develop a mathematical model that describes the converter’s modes of operation, as well as the current and voltage waveforms of the resonant power components. Results from hardware experimentation confirm that the converter effectively …

Impacts Of Temperature Acclimation On Swimming Performance And Metabolic Dynamics Of The Amargosa River Pupfish, Cyprinodon Nevadensis Amargosae, Teresa E. Guerre

Master's Theses

Climate change is leading to warmer atmospheric temperatures in many regions of the world, which in turn is raising the temperatures of aquatic habitats and simultaneously shifting the frequency and severity of extreme precipitation events. In fishes, metabolic demands are higher under warmer conditions, while dissolved oxygen levels typically decline in warmer water. This mismatch may limit the ability of fishes to cope with high water flow events like floods that can occur following extreme rainfall. A few species of pupfishes (genus Cyprinodon) in the Death Valley region of California and Nevada, USA, occupy stream or river habitats with …