Digital Commons Network^™

Two-Layer Formulation For Long-Runout Turbidity Currents: Theory And Bypass Flow Case, Hongbo Ma, Gary Parker, Matthieu Cartigny, Enrica Viparelli, S. Balachandar, Xudong Fu, Rossella Luchi

Faculty Publications

Turbidity currents, which are stratified, sediment-laden bottom flows in the ocean or lakes, can run out for hundreds or thousands of kilometres in submarine channels without losing their stratified structure. Here, we derive a layer-averaged, two-layer model for turbidity currents, specifically designed to capture long-runout. A number of previous models have captured runout of only tens of kilometres, beyond which thickening of the flows becomes excessive, and the models without a lateral overspill mechanism fail. In our framework, a lower layer containing nearly all the sediment is a faster, gravity-driven flow that propels an upper layer, where sediment concentration is …

A Brave New World Of Human Resources Research: Navigating Perils And Identifying Grand Challenges Of The Genai Revolution, Anthony Nyberg, Deidra J. Schleicher, Bradford S. Bell, Corine Boon, Peter Cappelli, David G. Collings, Joseph E. Dalle Molle, Stefan Feuerriegel, Berry Gerhart, Yoojin Jeong, M. Audrey Korsgaard, Dana Minbaeva, Robert E. Ployhart, Prasanna Tambe, Ingo Weller, Patrick M. Wright, Valery Yakubovich

Faculty Publications

This paper reviews the transformative role of Generative Artificial Intelligence (GenAI) in Human Resource (HR) management, from a practice perspective, highlighting both opportunities and challenges and laying out a use-inspired future research agenda. This scoping review is grounded in insights from a unique Summit held in Spring 2024, which brought together HR academic scholars with dozens of Fortune 500 Chief Human Resource Officers (CHROs) and their top technical leaders to discuss the workforce implications of GenAI. The paper identifies six key themes from the Summit practitioners: GenAI as disruptive and transformative, data as competitive advantage, adoption challenges, potential ethical abuses, …

Average Biomechanical Responses Of The Human Brain Grouped By Age And Sex, Ahmed A. Alshareef, Aaron Carass, Yaun-Chiao Lu, Joy Mojumder, Alexa M. Diano, Olivia M. Bailey, Ruth J. Okamoto, Dzung L. Pham, Jerry L. Prince, Philip V. Bayly, Curtis L. Johnson

Faculty Publications

Traumatic brain injuries (TBIs) occur from rapid head motion that results in brain deformation. Computational models are typically used to estimate brain deformation to predict risk of injury and evaluate the effectiveness of safety countermeasures. The accuracy of these models relies on validation to experimental brain deformation data. In this study, we create the first group-average biomechanical responses of the brain, including structure, material properties, and deformation response, by age and sex from 157 subjects. Subjects were sorted intro three age groups—young, mid-age, and older—and by sex to create group-average neuroanatomy, material properties, and brain deformation response to non-injurious loading …

Examining Physiological Responses To Misophonic Triggers, Christian O'Reilly, Xuan Yang, Sewon Oh, Doug Wedell, Svetlana Shinkareva

Faculty Publications

We collected and analyzed an array of biosignals (face electromyogram, skin electrodermal activity, peripheral temperature, and electrocardiogram) in 60 participants with and without misophonia, a condition characterized by decreased tolerance to innocuous sounds. Our goal was to objectively characterize the physiological response to misophonia triggering sounds. We found that misophonic responses can be objectively identified in some cases through atypical physiological reactions to triggering stimuli, though not all participants exhibited this response. Our analyses suggest a large interindividual variability in response to misophonic triggers and highlights the need for methodological adjustments in future experiments to increase the detectability of misophonic …

Removing Eog Artifacts From Eeg Recordings Using Deep Learning, Christian O'Reilly, Scott Huberty

Faculty Publications

The electroencephalogram (EEG) directly measures the electrical activity generated by the brain. Unfortunately, it is often contaminated by various artifacts, notably those caused by eye movements and blinks (EOG artifacts). Such artifacts are usually removed using an independent component analysis (ICA) or other blind source separation techniques. However, it is difficult to assess whether subtracting EOG components estimated through ICA removes some neurogenic activity. It is crucial to address this question to avoid biasing EEG analyses. Toward that objective, we developed a deep learning model for EOG artifact removal that exploits information about eye movements available through eye-tracking (ET). Using …

A Reliable And Efficient Detection Pipeline For Rodent Ultrasonic Vocalizations, Sabah Shahnoor Anis, Devin Mark Kellis, Kris Ford Kaigler, Marlene A. Wilson, Christian O'Reilly

Faculty Publications

Analyzing ultrasonic vocalizations (USVs) is crucial for understanding rodents' affective states and social behaviors, but the manual analysis is time-consuming and prone to errors. Automated USV detection systems have been developed to address these challenges. Yet, these systems often rely on machine learning and fail to generalize effectively to new datasets. To tackle these shortcomings, we introduce ContourUSV, an efficient automated system for detecting USVs from audio recordings. Our pipeline includes spectrogram generation, cleaning, pre-processing, contour detection, post-processing, and evaluation against manual annotations. To ensure robustness and reliability, we compared ContourUSV with three state-of-the-art systems using an existing open-access USV …

Open Accessarticle Crystal Plasticity Modeling Of Dislocation Density Evolution In Cellular Dislocation Structures, Md Mahabubur Rohoman, Caizhi Zhou

Faculty Publications

The complex thermal cycles during the solidification process in metal additive manufacturing (AM) lead to the formation of high-density dislocation networks, organizing into submicron-scale cellular structures. These ultrafine structures are recognized as crucial for enhancing the mechanical properties of AM metals. In this study, we investigate the evolution of dislocation density within these cellular structures under plastic deformation and its impact on mechanical response using dislocation density-based crystal plasticity finite element (CPFE) modeling. The model incorporates the evolution of both statistically stored dislocation (SSD) and geometrically necessary dislocation (GND). Our simulations reveal that the yield and flow stresses of dislocation …

Deep Jansen-Rit Parameter Inference For Model-Driven Analysis Of Brain Activity, Deepa Tilwani, Christian O'Reilly

Faculty Publications

Accurately modeling effective connectivity (EC) is critical for understanding how the brain processes and integrates sensory information. Yet, it remains a formidable challenge due to complex neural dynamics and noisy measurements such as those obtained from the electroencephalogram (EEG). Model-driven EC infers local (within a brain region) and global (between brain regions) EC parameters by fitting a generative model of neural activity onto experimental data. This approach offers a promising route for various applications, including investigating neurodevel- opmental disorders. However, current approaches fail to scale to whole-brain analyses and are highly noise-sensitive. In this work, we employ three deep-learning architectures—a …

“They Are Fat And Want Special Treatment For Being Fat”: Backlash To And Lay Theories Of Fat Activism, Flora Blanchette-Oswald, Minh Duc Pham, R. J. Harr, Alexandra Garr-Schultz, Kimberly E. Chaney

Faculty Publications

Fat activism is a movement that seeks to acknowledge and eliminate the oppression of fat people. The movement and those who participate face significant backlash, yet fat activism is understudied. We sought to understand lay theories about fat activism; that is, how everyday people think about the goals and motivations of fat activism, and people who engage in fat activism, to understand how these perceptions shape support for and backlash toward fat activism. In Study 1 (N = 294), we qualitatively elucidated lay theories of fat activism in a US nationally representative sample. We identified lay theories that both …

April 2, 2025 Faculty Senate Minutes, University Of South Carolina

Faculty Senate

No abstract provided.

Hedging Energy Transition: Green Hydrogen, Oil, And Low-Carbon Resilience As State Strategy In Namibia, Meredith J. Deboom

Faculty Publications

Policy frameworks increasingly portray energy transition as a mechanism for achieving a range of resilience- related goals, including socio-economic development and energy security. Energy transition is often character ized as a particularly important resilience strategy for lower-income states in the Global South, which face the simultaneous challenges of decarbonization and development. Yet these states, many of which have fossil fuel resources, face distinct constraints and risks in navigating energy transition, including the possibility that promised funding for low-carbon energy projects will never come to fruition or that global decarbonization will be deferred or abandoned completely. This article uses the case …

Representation Of South Asians In U.S. American Children’S Picture Books, Eman A. Chaudhry

Senior Theses

One potential cause of racism against South Asian Americans in school could be the lack of authentic representation of South Asians in the media. A method to properly depict them is via children’s picture books, which can be used to explore different cultures within the classroom. I examined the current landscape of American children’s picture books that depict South Asians and found that the most authentic portrayals included characters embracing certain holidays or traditions. Additionally, I researched issues that affect the South Asian community, one of which includes the stigmatization of mental health. Drawing on my own experiences, I wrote …

Vital Language Practices And Attitudes Among The Lumbee, Deven A. Hull

Senior Theses

The longstanding interest among linguists and linguistic anthropologists in Indigenous languages has increasingly adopted a Critical Indigenous framework, which has been promoted by Indigenous scholars and community leaders as a means of decolonizing “salvage” collection of Indigenous language materials. An important aspect of Critical Indigenous theory is the framework of vitality—that is, an emphasis in literature and community practice on the everyday living and lived elements of culture. One means of promoting Indigenous language within this Critical framework of vitality that is community-centered is centering vital language practices in community-based archives, which seek not to document the language as it …

Articulation As A Predictor Of Cognitive Decline, Sarah G. Hammons

Senior Theses

Background: Speech production is facilitated by motor neural networks that are proximal to neural substrates of general cognitive functions in the frontal lobe. However, the precise relationship between these brain networks supporting articulatory control and more general cognitive functioning has not been determined. A relation may be expected due to the anatomical proximity of specific networks, or due to more global aspects of brain health in individuals, affecting cognitive and motor functions across the board. Lower motor function is expected to affect the stability of speech production, but the extent to which this is also associated with lower cognitive functioning …

Are The Kids Alright? An Analysis Of Sex Education, The Sexual Behaviors Of Minors And Age Of Consent Laws In The United States, Monica L. Johnston

Senior Theses

This paper explores the sexual development of children, the sexual education they receive, as well as the history of sex laws in the United States, to determine whether the laws regarding education and age of consent adequately protect children. A qualitative survey is also conducted with undergraduate students at the University of South Carolina to determine what topics were discussed in their sexual education curriculum, as well as their sexual behaviors as a minor. While the push for comprehensive sexual education models has been growing, millions of dollars are still being allocated to promote Abstinence Only Until Marriage programs, which …

The Stigma Surrounding Sex And Sexuality In American Culture, Sophia L. Pollock

Senior Theses

An important question to examine is the origin and implications of the taboo against sex and sexuality. The stigma against these topics encourages negative public health implications like poor sex education, high rates of sexually transmitted infections, and teen pregnancy. History of sexual stigma was examined through physical media and digital articles from the Thomas Cooper Library databases. The background and global perspective of these stigmas are covered, examining how past and distant cultures deal with sex. How sex is portrayed in the media, why a healthy sex life is important, and the subject of sex education are also addressed. …

How Do Children Learn How To Learn? Promoting Early Development At Home Through Play: A Scoping Review, Annika J. Larson

Senior Theses

Early childhood is a critical time in human development, during which children are discovering and practicing countless skills, from basic motor and language skills to problem-solving, self-regulation, memory, and other foundational abilities like literacy and math skills. From infancy through childhood, play is thought to be the primary condition under which most early skills are developed and perfected. During this time, young children are especially vulnerable to adversity and negative environmental influences due to their brains’ high plasticity; adverse childhood experiences (ACEs) impact an individual well beyond early childhood, specifically in early skills deficits. Play is known to be a …

Physiological Indicators Of Social Anxiety In Preschoolers With The Fragile X Premutation, Olivia Cyburt

Senior Theses

The Fragile X premutation (FXpm) is a common genetic disorder often characterized by psychiatric impairments, including anxiety. It results from a trinucleotide repeat expansion (CGG) of 55-200 repeats on the FMR1 gene. Despite its association with psychiatric symptoms, there is limited research regarding the relationship between FXpm and anxiety, particularly social anxiety. Early detection of social anxiety is essential for timely intervention, yet it remains challenging to identify in young individuals with FXpm due to limited research. The present study aimed to bridge this gap by examining social anxiety in preschoolers with the FXpm, utilizing both a physiological and behavioral …

The Art Of Advocacy Revealed Through Law School Curriculum, Ashley Jones Hall

The Journal of Law and Education

No abstract provided.

Trios For Oboe, Bassoon, And Piano By Underrepresented Composers: An Annotated Bibliography And Performance Guide, Alexandra Castro

Theses and Dissertations

The purpose of this project is to highlight repertoire for the trio of oboe, bassoon, and piano, focusing on works by historically underrepresented composers, specifically women and people of color (including Black, Latinx, Indian, Asian, and Native American composers), as well as my performance suggestions and comments for each piece. By creating an annotated bibliography and providing performance insights for each piece, the author seeks to increase the visibility and accessibility of these compositions. This research reflects a broader effort to diversify classical music, promoting works that mirror our society’s diverse cultural landscape. As a first of its kind, this …

Increasing Diversity In The Genetic Counseling Profession: Determining Effective Career Education Strategies For Underrepresented Youth, Bryel Marie Frasch

Theses and Dissertations

Genetic counseling is a professional career path that is lacking in diversity, and diversity in healthcare has been shown to improve health outcomes. Studies suggest student engagement as a way to increase diversity, as early knowledge of genetic counseling increases the likelihood of considering it as a career and is especially true for racial or ethnic minoritized students. This study focused on educating high school students underrepresented in genetic counseling about the career and exploring the effectiveness of two different types of education methods (video vs in-person) to give valuable information for future outreach efforts. Upward Bound and Federal TRIO …

Endothelial Dysfunction Promotes Age-Related Reorganization Of Collagen Fibers And Alters Aortic Biomechanics In Mice, Liya Du, Jeffrey Rodgers, Nazli Gharraee, Olivia Gary, Tarek Shazly, John F. Eberth, Susan M. Lessner

Faculty Publications

Endothelial dysfunction, defined as a reduction in the bioavailability of nitric oxide (NO), is a risk factor for the occurrence and progression of various vascular diseases. This study investigates the effect of endothelial dysfunction on age-related changes in aortic extracellular matrix (ECM) microstructure and the relationship between microstructural adaptation and the mechanical response. Here, we used groups of NOS3 knockout (KO), NOS3 heterozygotes (Het), and wild-type (WT) B6 mice (controls) to study changes in hemodynamic parameters, collagen fiber organization, and both active and passive aortic mechanics using biaxial pressure myography over a time course from 1.5 to 12 mo. Our …

Tobacco Package Health Warnings About Product Manipulations: An Experimental Study Among Australian Adults Who Smoke, Emily Brennan, Claudia Gascoyne, Kimberley Dunstone, Amanda Vittiglia, Gayathri Srinivasan, Jim Thrasher Ph.D., Ma, Ms, Janet Hoek, Melanie Wakefield, Sarah Durkin

Faculty Publications

The tobacco industry manipulates cigarettes to provide sensory cues that mislead people who smoke. We assessed the effectiveness of health warnings (HWs) focussed on the impact of misleading product attributes, including filter ventilation, menthol, and roll-your-own tobacco, which were called Product Attribute HWs. Australian adults who smoke (n = 2544) were randomly assigned to view: control medication warnings; new Standard HWs with smoking harm images; Product Attribute HWs; or Product Attribute HWs plus a video. At baseline, participants were exposed to seven condition-specific warnings (+ video for those in the Product Attribute HWs + Video condition), then they were …

Research Priorities For Drivers Of Food Choice For Food System Transformation In South Asia: Proceedings Of A Collaborative Workshop, Christine E. Blake Ph.D., Rd, Sunny S. Kim, Edward A. Frongillo Ph.D., Purnima Menon

Faculty Publications

Agrifood systems in South Asia are highly productive, but substantial challenges including poverty, climate change, and environmental degradation complicate progress toward achieving sustainable healthy diets for all. The dynamics of food systems and the consequence of their rapid transformation for food choice behaviors that contribute to healthy and unhealthy diets are not well understood. Food choice is defined as a decision-making process through which individuals and households consider, acquire, prepare, distribute, and consume foods and beverages. Understanding drivers of food choice (DFC) is important for achieving sustainable healthy diets, but evidence is lacking. This article outlines collectively derived priorities for …

Telehealth Or In-Person Hiv Care? Qualitative Study Findings On Decision-Making From People With Hiv And Hiv Care Providers In South Carolina During The Covid-19 Pandemic, Valerie Yelverton, Salome Joelle Gass, Daniel Amoatika, Christopher Cooke, Jan Ostermann, Nabil Natafgi, Nicole L. Hair Ph.D., Bankole Olatosi Ph.D., Otis L. Owens, Shan Qiao Ph.D., Xiaoming Li Ph.D., Caroline Derrick, Sharon Weissman, Helmut Albrecht

Faculty Publications

The COVID-19 pandemic disrupted HIV care services across the United States. Telehealth was rapidly implemented to ensure HIV care continuity. Despite the evidence of unequal telehealth uptake among some people with HIV (PWH), the decision-making processes to determine who received telehealth or in-person care are under-researched. This study assessed which decision criteria and processes determined which HIV care visit type was used by PWH and HIV care providers during the COVID-19 pandemic. Qualitative in-depth interviews with 18 PWH and 10 HIV care providers from South Carolina assessed PWHs’ and HIV care providers’ decision-making criteria and processes for telehealth HIV care …

Adipocyte-Derived Cchamide-1, Eiger, Growth-Blocking Peptide 3, And Unpaired 2 Regulate Drosophila Melanogaster Oogenesis, Chad Simmons, Isaiah Williams, Tancia Bradshaw, Alissa R. Armstrong

Faculty Publications

In addition to energy storage, adipose tissue communication to other organs plays a key role in regulating organismal physiology. While the link between adipose tissue dysfunction and pathophysiology, including diabetes, chronic inflammation, and infertility, is clear, the molecular mechanisms that underlie these associations have not been fully described. We use Drosophila melanogaster as a model to better understand how adipose tissue communicates to the ovary. In this study, we utilized D. melanogaster’s robust genetic toolkit to examine the role of five adipokines known to control larval growth during development, CCHamide-1, CCHamide-2, eiger, Growth-blocking peptide 3, and unpaired 2 in regulating …

Monitoring Opioid-Use-Disorder Treatment Adherence Using Smartwatch Gesture Recognition, Andrew Smith, Kuba Jerzmanowski, Phyllis Raynor Phd, Aprn, Pmhnp-Bc, Cynthia F. Corbett Phd, Rn, Faan, Homayoun Valafar

Publications

The opioid epidemic in the United States has significantly impacted pregnant women with opioid use disorder (OUD), leading to increased health and social complications. This study explores the feasibility of using machine learning algorithms with consumer-grade smartwatches to identify medication-taking gestures. The research specifically focuses on treatments for OUD, investigating methadone and buprenorphine taking gestures. Participants (n = 16, all female university students) simulated medication-taking gestures in a controlled lab environment over two weeks, with data collected via Ticwatch E and E3 smartwatches running custom ASPIRE software. The study employed a RegNet-style 1D ResNet model to analyze gesture data, achieving …

Standardizing Heart Failure Discharges: Reducing 30-Day Readmission Rates, Angela Keziah

Doctor of Nursing Practice Scholarly Projects

Problem Statement: Patients readmitted with heart failure (HF) suffer increased mortality, reduced quality of life, and heightened medical expenses, though most readmissions are preventable with a consistent HF discharge regimen.

Purpose: To determine if a consistent HF discharge regimen using an evidence-based HF discharge checklist tool, including standardized HF education and a scheduled follow-up appointment with their cardiologist within 7-10 days post-discharge, impacted HF 30-day readmission rates.

Methods: An evidence-based HF discharge checklist tool was placed on participants’ charts on the Progressive Care Unit (PCU) and utilized by the PCU nurses to standardize HF discharges.

Inclusion Criteria: The study included …

Evaluating The Effectiveness Of A Behavioral Emergency Response Team In An Emergency Department, Kim Jai

Doctor of Nursing Practice Scholarly Projects

Problem Statement: The increasing incidence of occupational workplace violence (OWPV) in hospitals, especially in emergency departments (EDs), has become a significant concern in the United States. Given the increasing risk of the occurrence of workplace violence (OWPV) from patients and family members, hospitals have instituted the Behavioral Emergency Response Team (BERT) protocol, comprising trained staff members with expertise in acute psychiatric disorders and de-escalation techniques for managing assaultive behaviors.

Purpose: Evaluate a Behavioral Emergency Response Team (BERT) protocol implemented in an emergency department and make recommendations for improvement.

Methods: Using the Centers for Disease Control and Prevention's Logic Model, this …

Endothelial Dysfunction Promotes Age-Related Reorganization Of Collagen Fibers And Alters Aortic Biomechanics In Mice, Liya Du, Jeffrey Rodgers, Nazli Gharraee, Olivia Gary, Tarek Shazly, John F. Eberth, Susan M. Lessner

Faculty Publications

Endothelial dysfunction, defined as a reduction in the bioavailability of nitric oxide (NO), is a risk factor for the occurrence and progression of various vascular diseases. This study investigates the effect of endothelial dysfunction on age-related changes in aortic extracellular matrix (ECM) microstructure and the relationship between microstructural adaptation and the mechanical response. Here, we used groups of NOS3 knockout (KO), NOS3 heterozygotes (Het), and wild-type (WT) B6 mice (controls) to study changes in hemodynamic parameters, collagen fiber organization, and both active and passive aortic mechanics using biaxial pressure myography over a time course from 1.5 to 12 mo. Our …