Digital Commons Network^™

Mathematical Analysis Of Electrochemical Systems, Shiv Krishna Reddy Madi Reddy

Theses and Dissertations

A solid electrolyte interphase (SEI) growth model is developed in a mixed modethat contains solvent diffusion through the SEI layer and corresponding solvent reduction kinetics at the SEI/electrode interface. The governing equations are solved by the Landau transformation, which makes the moving layer fixed to predict the open circuit potential, SEI layer thickness, and capacity loss. The estimated parameters fitted with experimental data from the literature are computed using COMSOL and MATLAB. Results show that the mixed mode model predicts lower capacity loss and thinner SEI layer due to its growth under open circuit conditions than previously reported by others. …

Learning To Let Go: Becoming A More Collaborative And Compassionate Director, Catherine Joy Thomas

Theses and Dissertations

This thesis examines all the directorial projects I’ve had the pleasure of working on throughout my time at UofSC, both as an assistant and as a director. Because I am completing my MFA without the mentor I originally started this journey with, my path has not been linear but, instead, a series of stepping stones in all shapes and sizes, guided by different directors and unofficial mentors who have various styles and approaches to theatre. These projects have molded my directorial approach in different ways, and I have become a better collaborator and leader because of them. This thesis examines …

Deep Learning Based Fault Diagnosis And Prognosis For Bearing, Guangxing Niu

Theses and Dissertations

Rolling element bearings are critical components in industrial rotating machines. Faults and failures of bearings can cause degradation of machine performance or even a catastrophe. Therefore, it is significant work to perform bearing fault diagnosis and prognosis (FDP) reliably and effectively. Diagnosis aims to detect and estimate the fault state of bearing in real-time. Prognosis aims to conduct a long-term prediction to predict the fault evolution and estimate the remaining useful life (RUL) of the bearing.

Deep learning (DL) based FDP methods have become an important branch of bearing FDP methods due to their powerful capabilities in feature automatic learning, …

High-Performance Wide Bandgap Semiconductor Power Modules Enabled By Advanced Two-Phase Mini-Channel Cooling, Bo Tian

Theses and Dissertations

There is a widespread need for high performance wide bandgap power modules in both commercial and military applications. However, given the rapid advancements of wide bandgap power module technology, conventional cooling solutions have not kept up and do not provide the thermal management performance needed for high power density. Based on the two-phase cooling approach, two-phase microchannels operating at low fluid flow rates with low pressure drops have huge potential in enabling higher power density applications. Several studies have illustrated the potential great advantages of two-phase cooling compared to single-phase cooling in terms of maximum device temperature, spatial thermal distribution …

An Examination Of The Prevalence And Predictors Of Drugging Victimization And Drugging Perpetration In A National Sample, Amber Nicole Wallace

Theses and Dissertations

Objective: The current study sought to expand the understanding of the nascent phenomenon of drugging, the administering of a drug or alcohol substance to an individual without their knowledge or consent (Swan et al., 2017). Specifically, in this paper, the lifestyle-routine activities theory (L-RAT) is used as a framework to examine what factors may contribute to the occurrence of drugging. Prevalence rates of drugging victimization and drugging perpetration are examined by participant characteristics including gender, sexual orientation, and race/ethnicity, and by risk behaviors including illicit drug use, marijuana use, and binge drinking. Trait sensation seeking, which has been shown to …

Racial Equity Analysis: Access To Permanent Housing And The Vulnerability Index – Service Prioritization Decision Assessment Tool (Vi-Spdat), Mary Ann Priester

Theses and Dissertations

Purpose: This study aimed to replicate and extend national research within the local context of the Charlotte-Mecklenburg Continuum of Care by using propensity score methods to examine the relationships between race, program outcome, and housing prioritization among subpopulations of individuals experiencing homelessness.

Methods: This study used secondary data analysis and propensity score methods to examine deidentified client-level Homeless Management Information System (HMIS) data collected from January 1, 2016 – December 31, 2021 by the Charlotte-Mecklenburg Continuum of Care (CoC).

Results: Findings indicate that Whites are more likely to exit homeless services programs to temporary or institutional destinations vs. permanent housing …

Molecular Devices For Measuring Weak Solvophobic Interactions And The Development Of Pedagogical Tools For Organic Chemistry Students, Alexander N. Manzewitsch

Theses and Dissertations

The main topics of this dissertation are: 1) the development and discussion of a new molecular balance for measuring alkyl-alkyl interactions in a wide array of organic solvents, 2) the development of linear solvation energy relationships between solvent interaction parameters and solvent accessible surface area (SASA) in CH-arene interactions, and 3) the development of online resources for helping undergraduate students perform organic chemistry mechanisms problems well.

The solvophobic effect, that is the forced association between two solutes due to intermolecular attraction of the solvent molecules, is ubiquitous in organic chemistry and responsible for many significant phenomena thereof. However, there is …

“All The Rights Of Native Cherokees”: The Appearance Of Black People In Cherokee Society, Ayanna Goines

Theses and Dissertations

The appearance of Blacks in Native spaces affected the very structure of Indigenous lives during the forced removal of Native groups in the 1830s to the emancipation of enslaved people in the 1860s contributing to the change from a “clan-based society to a society grounded in the modern concept of rule of law” as the need to control the actions of enslaved people called for the creation of laws. Tribal courts were also used to determine whether someone was recognized and adopted into the clan. Outside of government involvement, the status of enslaved Black people was reinforced by the social …

Multilevel Description Of Spotted Fever Group Rickettsia Among Humans, Animals, And The Environment In Miraflores, Colombia, And South Carolina, Usa, Lidia Gual Gonzalez

Theses and Dissertations

Tick-borne diseases are emerging worldwide due to environmental shifts caused by land fragmentation and climate change. Among the most important ones spotted fever group rickettsioses (SFGRs) are of particular interest due to their wide species variety and high pathogenicity. Given the global spotted fever group rickettsia (SFGR) distribution, evaluation and comparison of different populations is critical to better understand these pathogens' epidemiology and unravel the risk factors affecting disease occurrence. Consequently, this dissertation investigates SFGR highlighting the One Health framework, assessing animals, humans, and the environment. The first part includes an evaluation at the household level using human and canine …

An Examination Of Inter-Limb Functional Asymmetry After A Fatiguing Bout Of Exercise In High Level Soccer Players, Nestor Urrea

Theses and Dissertations

INTRODUCTION: Inter-limb functional asymmetries greater than 15% have been linked to a greater incidence of injury. Moreover, asymmetries greater than 10% have shown greater risk of injury and worsened sport performance, especially for strength and power capabilities, in athletes of multiple sports. Fatigue and sex are factors that seem to influence injury rates as well as greater asymmetries between limbs. This research project aims to investigate the effects of a fatiguing bout of exercise in strength and power inter-limb functional asymmetries in male and female soccer players. It was hypothesized that strength and power asymmetries are negatively affected after a …

Exploring Trustworthiness Issues About Disaster-Related Information Generated By Artificial Intelligence, Xin Tao

Theses and Dissertations

This thesis tested the degree of trustworthiness of disaster-related information generated by artificial intelligence among American people and Chinese people, and explored the causes of people's attitudes towards trust or distrust. The thesis used OpenAI's GPT-3 model to generate stories based on real disaster events by artificial intelligence, and tested the degree of trustworthiness in semi-structured interview. The study showed that it was promising to use AI technology to publicize disaster-related news to audience. To increase readers' trust in AI-generated disaster-related information, news organizations should maintain a high level of transparency about the identity of the AI author, use the …

The Impact Of Using Tanks For The Equalization Step On The Performance Of A Psa Process, Behnam Fakhari Kisomi

Theses and Dissertations

The pressure equalization step between two adsorption beds is a key cycle step in many pressure swing adsorption (PSA) processes. It involves connecting two beds together, or two beds and a tank as a medium. The utilization of tanks for equalization in a bed-to-tank-to-bed (BTB) configuration could be advantageous to reduce the number of beds in PSA cycle. In this study, a binary gas mixture A and B, with A more strongly adsorbed than B, was used for the investigation of Stafstrom-type PSA cycles with bed-to-bed (BB) and bed-to-tank-to-bed (BTB) equalization steps using linear isotherm and isothermal equilibrium theory. For …

How Do You Feel, Kaitlyn Alexis Guinyard

Theses and Dissertations

The following is an incomplete manuscript of the novel, How Do You Feel. Set in a post-dystopian future, a city-sized ship called Pilgrim sails toward the mysterious Blue Star. Onboard, society has divided itself, in which the lowest of them all, Leashed, are enslaved by Tuners. While many inhabitants dream of reaching land again, its enslaved people cannot dream, let alone feel. Among them, Elijah is one of the numbest. She obeys her Tuner and abides by the order of Pilgrim. However, her world changes once she’s touched by the Blue Star, and she discovers many horrors lurking in …

Diffracting The Christine: Documenting A Building Multiple, Charles Brian Dedrick Harmon

Theses and Dissertations

The recent mingling of rhetorical theory and new materialism provides the space to ask different kinds of questions about our built history. Simultaneously, a parallel disciplinary interest in qualitative rhetorical field methods provides a growing arsenal for researchers who are invested in ‘being there’ and making a difference in the world. Working at the intersections of rhetorical theory, documentary film studies, and historic preservation, this project engages the Christine building differently. I offer a methodological framework to bridge rhetorical new materialism and rhetorical field methods and create a heuristic based in documentary theory and practice. As an archival, performance ethnography, …

A Randomized, Placebo Controlled, Double-Blind, Crossover Study To Evaluate The Effects Of Two Novel Hydration Beverage Formulas On Rehydration In Healthy Adults, Nathaniel David Rhoades

Theses and Dissertations

Intro: Dehydration is common in athletes and can lead to reductions in cognitive and physical performance. While there are many commercially available hydration beverages, most contain high amounts of CHO and are marketed as functional beverages. The purpose of this study was to determine the effects of two novel hydration beverage formulas (HMAA, HM) on hydration, cognitive performance, and time to exhaustion (TTE). Methods: Sixteen subjects (n=8 women, n=8 men) completed three experimental days where they consumed one of three conditions (HMAA, HM, or placebo) assigned randomly. The experimental protocol was completed in a heat chamber at 30-32℃ and 45-50% …

In Her Possession And Keeping Revolutionary War Widows And The Politics Of Family Archives, 1820–1850, Riley Kathryn Sutherland

Theses and Dissertations

This thesis examines how Revolutionary War widows deployed family archives as partisan tools to claim pensions. By reconsidering the relationship between women, family archives, and state building, it challenges established understandings of revolutionary women, nineteenth-century political economy, and memory.

Revolutionary War pension laws ignited fierce partisan debates. Since pensions would require Congress to impose tariffs and assemble a fiscal bureaucracy, they were generally supported by Whigs and contested by Democrats. Knowing that, women tailored their applications to their partisan audiences. Widows often appealed to Whigs by requesting welfare, citing their poverty. But when addressing Democrats, they framed the pensions they …

Ultra-Processed Food Consumption And Risk Of Liver Cancer, Longgang Zhao

Theses and Dissertations

Background: Studies have shown positive associations between ultra-processed food (UPF) intake and obesity and type 2 diabetes, two risk factors for liver cancer. However, the relationship between UPF intake and liver cancer has scarcely been studied. We aimed to evaluate the association between UPF intake and the risk of liver cancer in three prospective cohorts and further explore the role of genetic predisposition to fatty liver diseases and biomarkers of liver health on modifying the association.

Methods: We used data from the Nurses’ Health Study (1986-2012), the Health Professionals Follow-up Study (1986-2012), and UK Biobank (2006-2020). Diet was assessed with …

Oppa-Ng Gamsahamnita-Ng~~~: The Phonetics Of Nasal Cuteness In Korean Aegyo, Drew Michael Crosby

Theses and Dissertations

The term aegyo is often defined as a form of performative cuteness comprising a range of linguistic and non-linguistic behaviors (K. Moon, 2013; Puzar & Hong, 2018). Previous anthropological, discursive, and linguistic investigations (K. Moon, 2013; Puzar & Hong, 2018; H. Jang, 2021) identify it as a gendered practice associated with “modern and trendy young women in Korean mainstream culture” (K. Moon, 2017, p. 42), often used for requesting favors, maintaining social harmony, and gaining economic advancement (Manietta 2015; Puzar & Hong 2018). K. Moon (2013) asserts that the features that most prominently index aegyo are: rising-falling intonation (LHL%), the …

Comparing Efficiency, Empowerment, And Satisfaction Between Individual And Group Genetic Counseling For Prostate Cancer, Sarah Marie Dickman

Theses and Dissertations

A hereditary cause for prostate cancer can be identified in 5-17% of cases, which can impact treatment and cancer screening recommendations for patients and their families. Increased demand for genetic testing has necessitated consideration of alternative genetic counseling service delivery models to meet needs. Studies have shown that group genetic counseling increases efficiency while maintaining the same patient benefits as individual genetic counseling, but research has mainly focused on patients who were assigned female at birth (AFAB). The purpose of this study was to evaluate the utility of group genetic counseling for prostate cancer by assessing participants’ satisfaction and feelings …

Nondestructive Damage Detection And Stress Corrosion Crack Mitigation In Stainless Steel Plates, Andrew Philip Campbell

Theses and Dissertations

The ability to inspect and detect damage within a structure without permanent damage has broad appeal in a range of engineering applications from aerospace structures to nuclear facilities. Non-destructive evaluation (NDE) using guided ultrasonic Lamb waves has growing potential and popularity in these fields. Lamb waves are known for being sensitive to material properties and various defects across the thickness such as cracks in metallic structures and delamination or debonding in composite structures. Research has also been done on the development of fully non-contact system that generates and detects Lamb waves, particularly focused on the use of pulsed laser for …

Adaptation And Art: An Examination Of The Costume Design Process In A Global Pandemic, Kyla Ann Little

Theses and Dissertations

Exploring experiences in the Costume Design and Technology Program at the University of South Carolina, this thesis entails the extensive journey from the first trepidatious costume rendering to fully designing costumes for a studio feature film that may be sold to Hallmark. Through a comprehensive curriculum that involved designing costumes for three realized productions, acquiring proficient skills in drawing, painting, digital rendering, patternmaking, and draping, I was able to finish off with an internship semester that encompassed five professional jobs in the industry. My odyssey highlights the ability to adapt to new challenges, including navigating the global pandemic as an …

Learning Analytics Through Machine Learning And Natural Language Processing, Bokai Yang

Theses and Dissertations

The increase of computing power and the ability to log students’ data with the help of the computer-assisted learning systems has led to an increased interest in developing and applying computer science techniques for analyzing learning data. To understand and investigate how learning-generated data can be used to improve student success, data mining techniques have been applied to several educational tasks. This dissertation investigates three important tasks in various domains of educational data mining: learners’ behavior analysis, essay structure analysis and feedback providing, and learners’ dropout prediction. The first project applied latent semantic analysis and machine learning approaches to investigate …

If Not Me, Then Who? A Study Of Racial And Cultural Competence In A High School English Department, Dianna Sox

Theses and Dissertations

While the student population in U.S. public schools is diversifying, the teacher population and curriculum remain monochromatic. This action research study grew from the observation that racial and cultural content and discourse were absent from the English classrooms in my suburban high school due to a perceived lack of teacher cultural competence. Through this convergent mixed-method study, grounded in critical race theory, whiteness, and cultural competence, I sought to examine the factors that contribute to racial silence and improve teacher cultural competence in order to transform our classrooms into more racially and culturally just spaces. Surveys, independent reflections, focus group …

Supporting Lgbtq+ Ela Students Through Action Research, Nicole Mustaccio

Theses and Dissertations

English Language Arts curriculums traditionally include canonical authors such as Walt Whitman, Langston Hughes, and William Shakespeare. However, educators may not discuss the writers’ nonnormative sexuality. Moreover, educators may avoid teaching literature from a queer perspective, whether due to discomfort with LGBTQ+ terminology or because of a lack of professional development opportunities related to queer authors and queer theory.

In response to this problem of practice, I conducted this action research study to change the heteronormative culture at my high school. By providing professional development to fellow English Language Arts teachers, I sought to encourage the inclusion of LGBTQ+ authors …

Sparse Partitioned Empirical Bayes Ecm Algorithms For High-Dimensional Linear Mixed Effects And Heteroscedastic Regression, Anja Zgodic

Theses and Dissertations

Variable selection methods in both the frequentist and Bayesian frameworks are powerful techniques that provide prediction and inference in high-dimensional linear regression models. These methods often assume independence between observations and normally distributed errors with the same variance. In practice, these two assumptions are often violated. To mitigate this, we develop efficient and powerful Bayesian approaches for linear mixed modeling and heteroscedastic linear regression. These method offers increased flexibility through the development of empirical Bayes estimators for hyperparameters, with computationally efficient estimation through the Expectation Conditional-Minimization (ECM) algorithm. The novelty of these approaches lies in the partitioning and parameter expansion, …

Sensitivity Of The Cupid Experiment To Bragg-Primakoff Conversion Of Solar Axions And Alps, Kevin P. Wilson

Theses and Dissertations

The author reports in this dissertation on the application of a technique to use bolometer detector arrays, such as those of the CUORE experiment and its proposed upgrade CUPID, to search for 14.4 keV Solar axions arising from an M1 nuclear transition of thermally excited ⁵⁷Fe in the Solar core. Density functional theory calculations performed using QU A N T U M ESPRESSO for Li₂MoO₄ enable the computation of a time-dependent axionto-photon conversion rate in the bolometer crystals. These calculations predict that the proposed CUPID detector will be sensitive to Solar axions or axion-like particles that …

Examining The Relationship Between Multicultural Training And Cultural Humility Development In Cacrep-Accredited Counselor Education Programs, Sabrina Monique Johnson

Theses and Dissertations

To account for and adjust to the diversifying communities in the United States, CACREP, the ACA, and AMCD are making strides to increase counselor competence. Their efforts have involved incorporating standards that govern counselor training and practice to ensure counselors’ development of multicultural competence. In recent literature, researchers have proposed cultural humility development to further enhance the development of counselor cultural awareness and sensitivity, however there are minimal studies exploring the relationship between current multicultural training practices and the development of cultural humility characteristics of counselor trainees’ in CACREP-accredited counselor education programs. The current study has two primary aims: (1) …

The Effects Of Hip-Hop And Rap Music Intervention To Improve The Wellbeing Of Black And African American Men, Lanita Michelle Jefferson

Theses and Dissertations

Wellbeing affects an individual’s functioning regarding personal, interpersonal, social, and overall wellbeing (Tennant et al., 2007). This study investigated the wellbeing of mental health among African American college-aged men by reading hip-hop and rap lyrics (Gonzalez & Hayes, 2009). The study explored the effects of reading hip-hop and rap lyrics on Black and African American college-aged men's wellbeing. Through peer review articles, this study investigated the effects of reading hip-hop and rap lyrics on the wellbeing of Black and African American college-aged men. The researcher identified the lack of research on wellbeing and marginalized communities, specifically Black and African American …

Speckle Development And Application In Uav-Based Digital Image Correlation For Transportation Infrastructure Monitoring And Assessment, Taylor Wyatt

Theses and Dissertations

A critical aspect of civil infrastructure is structural health monitoring, of which digital image correlation (DIC) has been proven to be an effective and appropriate method. There is sufficient literature on the use of stationary DIC, but an unexplored aspect is DIC-equipped unmanned aircraft systems. It has been verified in University of South Carolina labs but has not been proved in a field environment. One of the challenges of field implementation is large scale speckle application. This work focusses on identifying and addressing challenges in bringing UAV-DIC technology from the lab to the field. This includes the development of optimized …

The Risk Of Protection: Examining The Contextual Effects Of Child Protective Services On Child Maltreatment Fatalities In The U.S., Cosette Morgan Mccullough

Theses and Dissertations

Much research has been done in the field of child homicide. While child homicide is a statistically rare event, it is especially pervasive in the United States. A subsection of research in the child homicide literature is the topic of child maltreatment fatalities, defined as when a child is killed through the means of maltreatment, such as physical abuse or neglect. What has been less so researched, however, is the combination of factors that can affect a child’s fatality risk. The current study seeks to expand on the previous research using the 2019 Child File of the National Child Abuse …