Digital Commons Network^™

Harnessing Ethnicity For Effective Leadership: Reimagining Ethnic Politics As An Institutional Asset In Africa, Obaloluwa A. Aka

Theses and Dissertations--Political Science

Ethnic identity remains one of the most enduring forces shaping political behavior and leadership in Africa. Often viewed as a source of division, this study reframes ethnicity as an institutional asset capable of fostering accountability and enhancing leadership quality. Drawing on Afrobarometer Round 9 data from 35 African countries, the paper shows that ethnicity consistently predicts vote choice affirming its political salience. Rather than treating this as a democratic obstacle, the analysis demonstrates that when mediated through trusted traditional leaders, ethnic identity can strengthen satisfaction with democracy, trust in institutions, and perceptions of governance. Logistic regression models reveal that trust …

Towards A Sociological Theory Of Consent And Coercion In Sexual Violence Against Women, Lisa Kistler

Theses and Dissertations--Sociology

Recent data estimate that 26.8% of adult women in the U.S. have experienced rape in their lifetime. In this context, the phrase “consent to sex” is a prominent narrative countering sexual violence. Yet, there is no consensus on the meaning of consent, nor how the practice of consent is affected by coercion, resulting in a puzzle of consent. In response, the present project brings together existing research and theory to conceptualize consent and coercion in new ways. It asks, broadly, how do different forms of coercion complicate sexual consent and contribute to sexual violence against women today and answers this …

Analysis Of Dynamic And Final Surface Subsidence Movements Over Subcritical Panels In The Eastern Us, Mauricio Parra Valencia Sr

Theses and Dissertations--Mining Engineering

Subsidence prediction is a critical field in mining engineering, focusing on anticipating ground movements caused by underground coal extraction. Accurately forecasting these movements is essential for protecting surface structures and infrastructure from damage. However, despite extensive research by mining professionals worldwide, reliable prediction remains challenging, especially in complex environments like subcritical mining areas and locations characterized by highly variable topography. These conditions introduce non-linear rock mechanics that often complicate the application of traditional predictive models. This thesis utilizes measured subsidence data related to the extraction of two adjacent longwall panels in a deep coal mine in the eastern US to …

Simplified Molecular Diagnostics Methods For Environmental Testing Of Pathogens And Other Applications, Mohammad Dehghan Banadaki

Theses and Dissertations--Mechanical and Aerospace Engineering

Environmental Surveillance (ES) has emerged as a powerful tool to monitor the emergence and persistence of a pathogen within a facility or community using wastewater/water analysis. Over the past four years, implementation of ES has experienced an explosive acceleration, driven by efforts to monitor the spread of SARS-CoV-2, which has made ES a routinely used public health tool in many locations. We can now use ES to measure the emergence/presence/abundance of different viruses (e.g., SARS-CoV-2, influenza, mpox), bacteria (e.g., E. coli, V. cholerae, antibiotic-resistant strains), fungi (e.g., C. auris), and other biological markers indicative of infectious diseases. However, its broad …

In Situ Bourbon Barrel Measurements Of Alcohol By Volume And Liquid Depth Using Borosilicate Glass Probes And Near Infrared Absorption Spectroscopy, Trent T. Reed

Theses and Dissertations--Mechanical and Aerospace Engineering

In pursuit of measuring different variables present in bourbon barrels, absorption spectroscopy was utilized to ensure that different ethanol and water concentrations can be differentiated using a broadband light source and near infrared spectrometer in a simple cuvette-based testing setup. The intensity and absorption plots gathered of different ethanol and water mixtures were then analyzed using proper orthogonal decomposition (POD) to break down the data into modes which represent specific variables of interest, specifically ethanol concentration or alcohol by volume (ABV). The modes were then utilized to find mode constants to represent the data taken from cuvette samples which were …

Acoustic Characterization Of A Quadcopter Using A Test Stand, Jared Schmal

Theses and Dissertations--Mechanical and Aerospace Engineering

Unmanned Aerial Vehicles (UAVs) with multirotor propulsion and control, commonly called drones or multicopters, generate a complex acoustic field that is not entirely understood. Many components and their interactions contribute to the overall noise level and behavior of the acoustic field. However, performing acoustic measurements on a multicopter in a confined space, such as a small anechoic chamber, can be an extremely difficult and time-consuming process. A test stand was developed to allow for rapid and safe acoustic measurements in a controlled environment. The design, development, and initial measurements are discussed. The performance and acoustic response are assessed to examine …

Analysis Of Closed-Loop Dynamical Systems Using Relu Nns, Pouya Samanipour

Theses and Dissertations--Mechanical and Aerospace Engineering

This thesis develops a framework for analyzing the stability and invariance properties of closed-loop dynamical systems whose dynamics are derived from neural networks with rectified linear units (ReLUs). The ReLU neural network defines continuous piecewise affine (PWA) functions, which makes them ideal for analysis using polyhedral geometry and optimization techniques. To begin, we introduce two exact algorithms for enumerating polytopic regions of affine behavior induced by ReLU networks: a half-space-based method that checks the feasibility of activation patterns and a geometric vertex-based method. Using these methods, we are able to perform precise region-wise analysis, and these methods serve as the …

Engineering A Novel Solvent Regenerator That Leverages Electrochemically Induced Ph Swings For Direct Air Capture And Hydrogen Generation, Emmanuel Aluhunmile Ohiomoba

Theses and Dissertations--Mechanical and Aerospace Engineering

Direct Air Capture (DAC) is considered to be a key component for achieving global net-negative emissions. However, to capture CO₂ at the low concentrations in the atmosphere requires materials with high affinity for CO₂. This makes the solvent-based chemical approach for DAC more applicable compared to physical approaches. Nonetheless, regenerating the capture solvent presents a significant challenge due to high heat requirements for thermal decomposition of carbonates. Leveraging electrochemical principles provides an opportunity to simplify the regeneration process, thus, this work focuses on engineering an electrochemical solvent regenerator for recovering alkaline solvents for DAC, with co-production of …

Machining-Induced Residual Stress Modeling Using Physics-Informed Neural Networks, Md Mehedi Hasan

Theses and Dissertations--Mechanical and Aerospace Engineering

Process-induced residual stress (RS) plays a critical role in determining the structural integrity, fatigue life, corrosion resistance, and dimensional stability of manufactured components. Tensile residual stress can be harmful to the machined workpiece by lowering fatigue strength, while compressive residual stress helps to prevent such issues. Therefore, accurate prediction and control of machining-induced residual stresses are essential for optimizing manufacturing processes and enhancing component performance. However, existing modeling approaches—empirical, analytical, and numerical—often have limited predictive accuracy, demand extensive calibration, or involve high computational costs. Traditional finite element analysis (FEA) provides modeling insights but is constrained by its high computational cost …

Fluid Pathways For Enhanced Mass Transfer In The Micro Regime: Applications In Novel Pumpless Redox Flow Cell And Zinc Finger Protein-Based Dna Detection, Shaikh Al Mahmud Bhuiyan

Theses and Dissertations--Mechanical and Aerospace Engineering

Precise fluid transport through microscale geometries can help optimize electrochemical and biochemical processes by maximizing the mass transfer rate of reactants. By introducing intricate structural features inside microchannels, it is possible to manipulate the fluid motion and direct the flow towards any surface of interest. In this study, we have demonstrated that rationally designed fluid pathways can improve the performance of electrochemical and biochemical systems.

The emergence of additive manufacturing has enabled rapid fabrication of robust structures with intricate features to guide fluid motion. However, their application in nonaqueous electrochemical systems has been limited due to their interaction with organic …

Direct Numerical Simulation Of Pulsating Flow In Curved Pipes: Insights Into Aortic Dissection In Humans, Gokul Anugrah Gopakumar

Theses and Dissertations--Mechanical and Aerospace Engineering

This dissertation investigates the hemodynamics of pulsating blood flow in curved vessels through direct numerical simulations (DNS), with the overarching aim of uncovering fluid dynamic mechanisms linked to the onset and progression of aortic dissection in humans. The work is structured in two parts: (i) fundamental studies in idealized geometries and (ii) preliminary investigations in patient-specific anatomies. In the first part, curved pipe models representing the aortic arch are used to isolate the effects of pulsation frequency, amplitude ratio, and curvature ratio on transitional and turbulent flow dynamics. The simulations reveal that curvature-driven centrifugal forces shift the peak velocity toward …

Come Hell Or High Water: A Constructed Grounded Theory Of Disaster Preparedness In Nonprofit Arts Management, Leah D. Hamilton

Theses and Dissertations--Arts Administration

This dissertation study constructs a grounded theory of disaster preparedness in nonprofit arts management, a research area that is underrepresented in broader disaster science research, and underrecognized by US government emergency management policy. Using the Constructivist Grounded Theory methodology, this qualitative study involves a systematic document review of more than 20 years of US practices and standards related to arts preparedness in combination with a two-year inquiry using a purposive sample of nonprofit arts managers who have recently been affected, directly or indirectly, by disasters in the state of Kentucky. The findings and the subsequent Theory of Performative Preparedness provide …

Exploring Healthcare Access In Telehealth Through Spanish-Speaking Patients’ Perspectives: A Scoping Review, Abigail J. Verst

Theses and Dissertations--Communication Sciences and Disorders

Background: Telehealth offers a potential solution to addressing access barriers experienced by Spanish-speaking patients. This scoping review aimed to explore whether a comprehensive view of healthcare access is being considered when creating telehealth programs for Spanish-speakers. The Conceptual Framework of Access to Healthcare (Levesque et al., 2013) was used to guide access analysis.

Methods: A literature search was conducted across three databases to identify empirical studies in the United States that reported Spanish-speaking patients’ perspectives of telehealth through quantitative questions. Data was collected from the included articles to characterize the type of healthcare providers and telehealth modalities examined in the …

Practicing Clinicians' Views Of The Life Participation Approach To Aphasia Therapy, Stephanie H. Mays

Theses and Dissertations--Communication Sciences and Disorders

The Life Participation Approach to Aphasia therapy (LPAA) aligns with a person-centered, functional approach to speech therapy. Past research has demonstrated that persons with aphasia (PWA) benefit from this approach and prefer it when compared to the traditional medical model to therapy. However, a disconnect between PWA preferences and SLP treatment approaches in therapy persists. This study aims to identify both barriers and facilitators that SLPs face when implementing LPAA. Five CCC-SLPs practicing in the state of KY with experience working with PWA were recruited as participants. Participants were placed into two focus groups, with each group meeting for 2-3 …

Zebrafish Models To Uncover Targetable Mechanisms Of Self-Renewal In T-Cell Acute Lymphoblastic Leukemia, Majd Al-Hamaly

Theses and Dissertations--Pharmacology and Nutritional Sciences

Relapsed T-cell Acute Lymphoblastic Leukemia (T-ALL) patients have dismal prognosis, with 5-year overall survival rates of 10% for adults and 36% for children. Relapse is attributed to the inability of chemotherapy agents to eliminate Leukemia Stem Cells (LSCs) that can repopulate the leukemia. Those cells exist with a unique genetic, transcriptomic, and metabolic profile compared to the rest of the leukemia and thus, finding targeted therapies toward this population of cells can result in disease eradication and elimination of relapse. However, investigating LSCs is challenging-particularly in T-ALL- for two reasons: 1) the lack of robust surface markers that define LSCs …

Biochemical And Biophysical Properties Of Failing Myocardium In Rare Patient Populations, Gregory Nathaniel Milburn

Theses and Dissertations--Physiology

Heart failure has diverse underlying etiologies, complicating research. While some types, like ischemic disease or inherited mutations, are well-studied, research on rarer forms has lagged. Understanding the molecular drivers in these populations may enhance diagnostics and therapies. This work examines two rare groups: patients with ATTR cardiac amyloidosis and those receiving mechanical assist device support. We show that myocardium from patients with amyloidosis has increased fibrosis and reduced force production without changes in cross-bridge kinetics. Additionally, we show that the passive stiffness of amyloidosis myocardium is not different from non-failing myocardium, indicating increased ventricular wall thickness may cause restrictive filling. …

Therapist Perspective Of Therapeutic Alliance And Treatment Outcome In Systemic Psychotherapy, Benjamin Larkin Mize Patterson

Theses and Dissertations--Family Sciences

One of the most robust findings in psychotherapy outcome research has been the relationship of a strong therapeutic alliance with improvement in treatment. Most research, however, has measured therapeutic alliance from the client’s point of view, disregarding the therapist’s perspective of this phenomenon. In this naturalistic study of adults in systemic individual, couple, or family psychotherapy (N = 627), both client- and therapist-ratings of alliance were assessed for their associations with treatment outcomes. Multilevel modeling was employed to analyze data from the Marriage and Family Therapy Practice Research Network (MFT-PRN). Client-ratings of the therapeutic alliance and general functioning/relationship satisfaction …

Bed Bugs: Health Risks And Control, Simona Principato

Theses and Dissertations--Entomology

Bed bugs are blood-feeding hemipterans strongly associated with humans. Their detection in indoor environments, such as homes, hotels, trains, and public facilities, has increased gradually over the past 20 years. The exact cause of their resurgence is still unclear, but the increase of international travel and insecticide resistance are thought to have contributed to it.

Although bed bugs are not known to transmit diseases, the EPA, CDC, and USDA have classified them as a pest of significant public health concern, mainly due to the dermatitis that they can cause. Beyond the dermatological burden of the bites, other health implications often …

Exportin 1 Is The Central Hub In Antiviral Defensive Mobilization Of Nuclear Factors And The Target Of Counter-Defence By Tombusviruses, Biao Sun Dr.

Theses and Dissertations--Plant Pathology

Positive-strand RNA viruses, such as coronaviruses and flaviviruses, are obligate parasites whose genomic RNAs function as mRNAs. These viruses infect a wide range of hosts-including plants, animals, and humans-resulting in significant economic losses and posing serious threats to public health. Due to the relatively simple structure of the genome of positive-strand RNA viruses, many host factors and physiological processes are co-opted to support virus infection and replication. In our previous studies, we identified numerous host factors and associated physiological processes involved in the replication of tombusviruses, a cytosolic-replicating model that includes tomato bushy stunt virus (TBSV) and carnation Italian ringspot …

Gene Expression In Relation To Bone Fractures In Throughbred Racehorses, Anna M. Rauber-Ramos

Theses and Dissertations--Veterinary Science

Evidence that fractures in Thoroughbred racehorses are outcomes of chronic bone microdamage has led to extensive research into identifying horses at increased risk of fracture. This includes the use of biomarkers and messenger RNA (mRNA) as a measure of bone turnover. Previous research has found expression differences in horses with fractures compared to controls. Utilizing pre-race whole blood samples collected over an 18-month period from Thoroughbred racehorses in Southern California, RNA-sequencing was conducted on horses with bone fractures and race-matched controls to identify differences in gene expression. Focusing on third metacarpal (MC3) and proximal sesamoid bone (PSB) fractures, differentially expressed …

Does Participation In An Innovative Livestock Exhibition Program Foster The Development Of Grit In Youth Across Rural, Micro, And Metropolitan Communities?, Reba V. Prather

Theses and Dissertations--Community & Leadership Development

This research examined whether livestock exhibition could be used to foster grit in youth across rural, micropolitan, and metropolitan communities. More specifically, the researcher sought to evaluate the impact an innovative livestock exhibition program had on youth resilience. Through partnerships with 4-H clubs and agricultural organizations, the initiative encourages community-driven involvement, allowing youth to take ownership of their growth and development. The program utilized agricultural animal husbandry experiences as a mechanism for youth development, exploring the broader impact of livestock engagement on character-building. By assessing the outcomes of these experiences, the research highlights the trials and tribulations associated with fostering …

Impacts Of Utilizing Reverse Osmosis Concentrate On Mashing, Fermentation, And Water Use In Bourbon Whiskey Production, Ryan C. Sarhan

Theses and Dissertations--Biosystems and Agricultural Engineering

This thesis addresses the feasibility of reusing reverse osmosis concentrate (ROC) in the bourbon whiskey fermentation processes. Initial work compared laboratory-scale mashing and fermentation methods, demonstrating that simultaneous saccharification and fermentation reliably reflects industrial-scale processes, with lower complexity and process time. Building upon this, laboratory and distillery-scale experiments demonstrated that reusing ROC in the mashing and fermentation steps does not negatively impact ethanol yields. ROC produced by systems with a water softener was found to significantly increase mash rheology, suggesting a need for potential process adjustments. Softened ROC also altered the production of flavor-influencing volatile congeners. Under worst case conditions, …

Development Of A Cultivation System For Producing Pure Mycelium Materials From Distillers' Spent Grains, Keya Rani Roy

Theses and Dissertations--Biosystems and Agricultural Engineering

Stillage is a byproduct of distilleries which is rich in organic matter, minerals, and acidic components. It is commonly used as animal feed and has high potential for use as an alternative substrate for microorganisms. Filamentous fungi are saprophytes that can utilize stillage solids to grow as threadlike mycelium. The structure and composition of the filamentous mycelium has shown promise to produce pure mycelium materials (PMM), which might have many potential applications, for instance as a leather-like material or alternative protein food ingredient. Basidiomycota fungi (including true mushrooms) species are presently used in industry to produce PMM due to the …

Power Struggle: The Disproportionate Burden State Surrogacy Requirements Impose Upon Women, Courtney Harper Turkington

William & Mary Journal of Race, Gender, and Social Justice

The use of gestational surrogacy as a means to grow a family is increasing each year as fertility rates decline and single individuals and same-sex couples seek to have children who are genetically related to them. The United States does not have a uniform law governing surrogacy, leaving states to enact their own. While twenty-four states in this country have passed legislation permitting surrogacy and twenty-four others allow surrogacy in practice, the vast majority of states impose laws or practices that unduly burden women. In particular, Louisiana has the most restrictive surrogacy regime in the country. The state’s gestational carrier …

For The Right To Repair Oneself: Cybernetic Imds And The Plight Of Manufacturer Abandonment, Kathy Bacuta

William & Mary Journal of Race, Gender, and Social Justice

One in four people in the United States are disabled, making them the country’s largest minority. Yet they are well-known as the forgotten minority because they are often overlooked by governments and international organizations, and are rarely included in diversity and equity discussions. This is clear in how little the United States fights for the rights of the disabled. The disability aid and big pharma industries have been accused of being parasitic, the public has been accused of being unaccommodating, and the state and federal government has been accused of being unhelpful towards supporting the lives of the disabled. However, …

The Relationship Between Perceived Racial Stress And Academic Achievement Of African American Students, Jodie E. Felder

PCOM Psychology Dissertations

Educational institutions are not only places of learning, but they can be places of refuge and support for students. Academic engagement and performance can be negatively affected for ethnic students of color. This can lead to a disconnection between the education system of teachers, administrators, and students. Studies suggest racial stress contributes to negative environmental factors, to which African American (Black) students have been found to be especially vulnerable. Overlooked, ignored, and misunderstood environmental factors for African American students exacerbate educational obstacles, widening achievement gaps and increasing attrition rates. A lack of culturally guided knowledge among stakeholders lessens the opportunity …

Playing The Corporate Game: Corporate Personhood For Collegiate Sports Teams, John Spellman

Transactions: The Tennessee Journal of Business Law

No abstract provided.

Front Matter

Transactions: The Tennessee Journal of Business Law

No abstract provided.

Enhancing Patent Valuation: Strategies For Improved Monetization And Market Impact, Daniel Mendoza

Transactions: The Tennessee Journal of Business Law

No abstract provided.

The Constitutional Attack On The Nlrb, Dale Pierson

Transactions: The Tennessee Journal of Business Law

No abstract provided.