Digital Commons Network^™

Communicating About A Nicotine Reduction Policy Among People Who Use Little Cigars And Cigarillos, Charity Afi Ntansah

Theses and Dissertations

The U.S. Food and Drug Administration (FDA) has proposed rulemaking to reduce the nicotine content in cigarettes and other combusted tobacco products to non-addictive levels. A very low nicotine content (VLNC) policy aimed primarily at cigarettes could drive people to other combusted products like little cigars and cigarillos (LCCs), potentially undermining its effectiveness. Expanding the policy to include LCCs requires effective messages for people who use LCCs. This dissertation explores how to communicate the reduced nicotine policy to people who use LCCs. The research recruited four populations with the highest prevalence of cigar use: African American and White males and …

Enhancing The Security In High-Speed Networks Using P4 Programmable Switches, Ali Alsabeh

Theses and Dissertations

Network security has become increasingly essential in today's networks due to the growth of various network applications, such as Machine Learning (ML) and Fifth-Generation (5G) Networks. One fundamental Internet protocol is the Domain Name System (DNS), which maps domain names to Internet Protocol (IP) addresses. Despite its importance, DNS traffic is often forwarded without being analyzed, making it a center of ever-evolving attacks. Traditionally, defense strategies are implemented on fixed-function security middleboxes that are costly, proprietary, and hard to manage. Alternatively, defenses implemented in software use general-purpose servers (e.g., the control plane of a Software-Defined Networking (SDN) network) that cannot …

Neurocognitive Processes As Longitudinal Predictors Of Reading Fluency, Jody Samuels

Theses and Dissertations

Reading fluency involves a complex interaction of different cognitive skills and abilities that develop with instruction and practice and relies on the automaticity of many distinct reading skills (e.g., pacing, word recognition, expression, phonological awareness). Fluent reading frees cognitive resources, such as working memory, for more advanced components of reading including comprehension and synthesis (Kim & Wagner, 2015; Samuels, 2006). Though early identification of students with fluency challenges is critical for providing evidence-based intervention, most screeners assess skills that are dependent upon instruction (e.g., letter identification, sound-symbol correspondence), delaying opportunities for identification. The current study examines the utility for including …

Fan, Friend, Or Foe: An Exploratory Scale Development Of Perception Of Social Media Influencers On Instagram, Katelynn Danyell Stewart

Theses and Dissertations

This study aims to start the scale-building process of perception of social media influencers. This dissertation analyzes lifestyle Instagram influencers' followers’ perceptions of the influencer, their brand, and their communication and interaction efforts with followers through Instagram. This survey will help test the independent variables and dependent variables through the public relations lens using a combination of parasocial relationship theory, source credibility theory, and uses and gratifications theory to determine the effects and behaviors that lifestyle Instagram influencers have on their followers connected to influencer brand and influencer interactivity; and how lifestyle Instagram influencer usage, influencer authenticity, and parasocial relation …

Measuring Evidence Application In Routine Mental Health Settings: Testing A Coding System And Providing A Proof Of Concept, Eleanor Wu

Theses and Dissertations

Over the past 25 years, there have been increasing calls to advance the application of evidence in routine mental health settings for youth and families. Methods in the field for characterizing evidence application have played a critical role in shaping these efforts, which, to-date, have largely focused on measuring providers’ adherence to practices from evidence-based programs in treatment sessions. While this program-centric paradigm for characterizing evidence application has supported the widespread implementation of evidence-based programs in public mental health settings, it is limited in scope and applicability for characterizing all the ways that evidence may be applied across a service …

Essays In Labor Economics, Inclusion, And Diversity, Saharnaz Babaei Balderlou

Theses and Dissertations

This dissertation presents a comprehensive analysis of various teacher staffing policies and their impact on teacher retention and turnover. It comprises three studies, each addressing a unique aspect of teacher staffing challenges in the United States and in South Carolina. Chapter 2 investigates how different salary structures (frontloading vs. backloading) affect teacher turnover in South Carolina. Using a Difference-in-Differences (DID) approach and data from FY2014 to FY2023, the study finds that frontloading salary schedules do not significantly impact overall teacher turnover, with negligible effects on novice teachers. However, the impact varies with district characteristics: specifically, frontloading may reduce turnover in …

Offshore Detachment Of The Winyah Bay Plume Through Ekman Dynamics Under Upwelling Conditions, Isabella Moore

Theses and Dissertations

ABSTRACT River plumes play a crucial role in coastal ecosystems by influencing land-ocean interactions, primary production, water quality, and ocean circulation. This study presents observations of a buoyant river plume off Winyah Bay, South Carolina (USA), conducted in 2020 and 2021. Observations comprised CTD casts and shipborne ADCP profiles as well as near surface flow measurements from a floating platform and microstructure profiles in uprising mode. This research focuses on the offshore transport of the buoyant water through Ekman dynamics under upwelling-favorable conditions. Under varying wind forcing and stratification scenarios, the Winyah Bay plume either remains near the coast or …

Multi-Scale Deep Representation Learning In Synthetic Biology, Xiaoyi Liu

Theses and Dissertations

Synthetic biology advances and combines the expertise of engineers and biologists, bridging the gap between engineering and natural life. Synthetic biology has been generally categorized into two broad branches by developing new biological components, networks, and systems to reprogram organisms. The first branch involves using synthetic molecules to mimic natural biological functions. The second branch focuses on assembling natural biological components in novel ways, aiming to produce systems with unique, practical functions. Thus, the de novo engineering of biological modules and synthetic pathways is used in related practical bioengineering applications, such as drug-targeting strategies and microbial product manufacturing. Therefore, synthetic …

Assessing Role Of Social Media Labels In Countering Misinformation Using Information Processing Perspective: Findings From University Of South Carolina, Ali Zain

Theses and Dissertations

In the context of online misinformation, this study integrates Heuristic-Systematic Model (HSM), Elaboration-Likelihood Model (ELM), and Motivation, Opportunity, and Ability (MOA) to investigate the impact of three social media labels on information processing and verification. It adopts experimental design with single manipulation involving undergraduate students. Psychophysiological measures (i.e., dwell time, peaks per minute, and frontal alpha asymmetry) are used along with self-report methods. Findings reveal significant effects of social media label 1 which explicitly flagged misinformation on perceived message credibility, intentions to adopt counter behaviors and information verification, and actual behaviors. The findings were also endorsed by regression analyses using …

Fostering Hope In Schools: Behavioral Engagement Mediates The Relationship Between Perceived Social Support For School And Hope In Adolescents, Jackson Whitmire

Theses and Dissertations

Better understanding and fostering positive development within youth has become increasingly popular among psychologists, educators, and parents (Seligman & Csikszentmihalyi, 2000). One aspect of positive adjustment is the development of hopeful thinking, which has been demonstrated to be associated with more positive outcomes in terms of positive development, academic achievement (e.g., Marques et al., 2017), and greater career success later in life (e.g., Hirschi, 2014). However, relatively little is known regarding the development and maintenance of hope in children and adolescents, particularly regarding the effects of their school experiences on hope. Both theory (Snyder et al., 1991; Marques & Lopez, …

Humanizing Healthcare: Supporting Lgbtq+ Healthcare Professionals And Trainees, Atticus Wolfe

Theses and Dissertations

The public perception of the healthcare profession has been shifting in recent years largely attributed to the rise of scientific and medical skepticism impacting perceptions of the value of healthcare professionals and care itself (Goddard & Patel 2021). While healthcare professions remain associated with higher public value, healthcare professionals and trainees are expected to adhere to rigid expectations of medical professionalism that may contradict other aspects of their identities. LGBTQ+ identity in particular may pose conflicts to the expectations of healthcare professionalism, contributing to lower self-perceived value for LGBTQ+ healthcare professionals and trainees compared to non-LGBTQ+ healthcare professionals and trainees …

Leaf Development In The Reproductive Phase Of Arabidopsis: Investigating The Mechanics Of Cauline Leaf Identity And Bract Suppression, Darren Paul Manuela

Theses and Dissertations

Leaves in the reproductive phase subtend inflorescences or flowers and exhibit diverse morphological modifications specialized for reproductive success, such as attracting pollinators, protecting flowers/fruit, and photosynthesis. Using the model organism Arabidopsis, we investigated the development of these specialized leaves. In Arabidopsis, uniquely shaped cauline leaves subtend inflorescences, protect young floral buds and exhibit increased photosynthetic activity crucial for seed production. As form affects function, we analyzed gene expression patterns by RT-qPCR and GUS reporter genes in cauline leaves and examined mutant phenotypes with defective cauline leaf morphology. Our results reveal that redundant miR156-targeted SPLs function to promote cauline leaf identity …

“What Memory Wants From Me”: Contemporary Female Writers On The Calling To Remember, Daria Smirnova

Theses and Dissertations

This dissertation explores the intersections of transnational memory studies and feminist autobiographical writing through the works of Maria Stepanova, Annie Ernaux, and Lea Ypi. It argues that contemporary literature, especially that written by women, provides innovative frameworks for understanding identity, memory, and the sociopolitical context of our time. By examining how these authors intertwine personal and collective histories, the study highlights the shift in memory studies from monumental, nation-centered history to transnational, mobile memory modalities. I have pinpointed three themes to which these authors significantly contribute within the feminist and political discourse on memory: the relationship between gender and memory, …

Three Essays On Environmental, Social, And Governance (Esg), Zhengwei Fu

Theses and Dissertations

This abstract synthesizes findings from three studies examining the impact of environmental, social, and governance (ESG). In essay one, using environmental regulatory enforcement data from EPA, I find that facility-level political connections are positively related to the likelihood of experiencing environmental regulatory enforcement. The effect is mainly driven by political connections related to Democratic senators. Consequently, politically connected facilities reduce their air pollution. The effect of political connection is diminished when the authority of senators over environmental regulatory enforcement becomes weaker after the 2017 presidential election. Heterogeneity analyses reveal that the impact of political connection is stronger in states with …

Functional Multivariable Logistic Regression With An Application To Hiv Viral Suppression Prediction, Siyuan Guo, Jiajia Zhang Ph.D., Yichao Wu, Alexander C. Mclain Ph.D., James W. Hardin, Bankole Olatosi Ph.D., Xiaoming Li Ph.D.

Faculty Publications

Motivated by improving the prediction of the human immunodeficiency virus (HIV) suppression status using electronic health records (EHR) data, we propose a functional multivariable logistic regression model, which accounts for the longitudinal binary process and continuous process simultaneously. Specifically, the longitudinal measurements for either binary or continuous variables are modeled by functional principal components analysis, and their corresponding functional principal component scores are used to build a logistic regression model for prediction. The longitudinal binary data are linked to underlying Gaussian processes. The estimation is done using penalized spline for the longitudinal continuous and binary data. Group-lasso is used to …

The Expression Of Mantle Seismic Anisotropy In The Global Seismic Wavefield, Jonathan Wolf, Maureen D. Long, Daniel A. Frost, Tarje Nissen-Meyer

Faculty Publications

The dependence of seismic wave speeds on propagation or polarization direction, called seismic anisotropy, is a relatively direct indicator of mantle deformation and flow. Mantle seismic anisotropy is often inferred from measurements of shear-wave splitting. A number of standard techniques to measure shear-wave splitting have been applied globally; for example, *KS splitting is often used to measure upper mantle anisotropy. In order to obtain robust constraints on anisotropic geometry, it is necessary to sample seismic anisotropy from different directions, ideally using different seismic phases with different incidence angles. However, many standard analysis techniques can only be applied for certain epicentral …

The Fate Of Fixed Nitrogen In Santa Barbara Basin Sediments During Seasonal Anoxia, Xuefeng Peng, David J. Yousavich, Annie Bourbonnais, Frank Wenzhöfer, Felix Janssen, Tina Treude, David L. Valentine

Faculty Publications

Despite long-standing interest in the biogeochemistry of the Santa Barbara Basin (SBB), there are no direct rate measurements of different nitrogen transformation processes. We investigated benthic nitrogen cycling using in situ incubations with ¹⁵NO ₃̅  addition and quantified the rates of total nitrate (NO ₃̅) uptake, denitrification, anaerobic ammonia oxidation (anammox), N₂O production, and dissimilatory nitrate reduction to ammonia (DNRA). Denitrification was the dominant NO ₃̅ reduction process, while anammox contributed 0 %–27 % to total NO ₃̅ reduction. DNRA accounted for less than half of NO ₃̅ reduction except at the …

Probabilistic Estimation Of Cadence And Walking Speed From Floor Vibrations, Yohanna Mejiacruz, Juan M. Caicedo, Zhaoshuo Jiang, Jean M. Franco

Faculty Publications

Objective: This research aims to extract human gait parameters from floor vibrations. The proposed approach provides an innovative methodology on occupant activity, contributing to a broader understanding of how human movements interact within their built environment. Methods and Procedures: A multilevel probabilistic model was developed to estimate cadence and walking speed through the analysis of floor vibrations induced by walking. The model addresses challenges related to missing or incomplete information in the floor acceleration signals. Following the Bayesian Analysis Reporting Guidelines (BARG) for reproducibility, the model was evaluated through twenty-seven walking experiments, capturing floor vibration and data from Ambulatory Parkinson’s …

Correction: Graph Theory And Graph Neural Network Assisted High-Throughput Crystal Structure Prediction And Screening For Energy Conversion And Storage, Joshua Ojih, Mohammed Al-Fahdi, Yagang Yao, Jianjun Hu, Ming Hu

Faculty Publications

Correction for ‘Graph theory and graph neural network assisted high-throughput crystal structure prediction and screening for energy conversion and storage’ by Joshua Ojih et al., J. Mater. Chem. A, 2024, 12, 8502–8515, https://doi.org/10.1039/D3TA06190F.

On page 8511 in section 3.2 of the published article, the text “The single values of bonding and antibonding for each structure are obtained by performing integration over COHP curves for each atomic pair as evaluated by the LOBSTER package” should have included citations to six references. The missing references are listed below as ref. 1–6.

The Royal Society of Chemistry apologises for …

Examining The Influence Of Gender On Athletes’ Levels Of Moral Reasoning…, Vincent Lyons, Brian A. Turner

Journal of Issues in Intercollegiate Athletics

No abstract provided.

Short- And Medium-Term Impacts Of Small-Scale Vegetable Support On Food Security: Evidence From Syria, Ghassan Baliki, Melodie Al Daccache, Hala Ghattas Ph.D., Tilman Brück

Faculty Publications

Small-scale agricultural and horticultural interventions play a critical role in improving nutrition and food security of vulnerable households in peaceful settings. However, scant rigorous evidence exists on the impacts and sustainability of such interventions in conflict settings. In this paper, we address this knowledge gap by analyzing the short- and medium-term impacts of a small-scale vegetable input support program involving asset transfers on food security and diets in war-time Syria. We use longitudinal panel household survey data from a quasi-experimental study collected at three rounds: before, one year, and two years after the horticultural intervention ended. We use propensity score …

Incorporating Oxygen Isotopes Of Oxidized Reactive Nitrogen In The Regional Atmospheric Chemistry Mechanism, Version 2 (Icoin-Racm2), Wendell W. Walter, Masayuki Takeuchi, Nga L. Ng, Meredith G. Hastings

Faculty Publications

The oxygen isotope anomaly (Δ¹⁷O = δ¹⁷O − 0.52 × δ¹⁸O > 0) has proven to be a robust tool for probing photochemical cycling and atmospheric formation pathways of oxidized reactive nitrogen (NO_y). Several studies have developed modeling techniques to implicitly model Δ¹⁷O of NO_y molecules based on numerous assumptions that may not always be valid. Thus, these models may be oversimplified and limit our ability to compare model Δ¹⁷O values of NO_y with observations. In this work, we introduce a novel method for explicitly tracking Δ …

Under Pressure: The Interplay Of Hypertension And White Matter Hyperintensities With Cognition In Chronic Stroke Aphasia, Jade Hannan, Natalie Busby, Rebecca Roth, Janina Wilmskoetter, Roger Newman-Norlund Ph.D., Chris Rorden, Leonardo Bonilha, Julius Fridriksson Ph.D.

Faculty Publications

While converging research suggests that increased white matter hyperintensity load is associated with poorer cognition, and the presence of hypertension is associated with increased white matter hyperintensity load, the relationship among hypertension, cognition and white matter hyperintensities is not well understood. We sought to determine the effect of white matter hyperintensity burden on the relationship between hypertension and cognition in individuals with post-stroke aphasia, with the hypothesis that white matter hyperintensity load moderates the relationship between history of hypertension and cognitive function. Health history, Fazekas scores for white matter hyperintensities and Wechsler Adult Intelligence Scale Matrix Reasoning subtest scores for …

Colombia As A Future Tourism Destination From U.S. Travelers’ Perspective, Maricela I. Montes-Guerra, Natalia Zapata-Cuervo, Miyoung Jeong Ph.D.

Faculty Publications

This research identified the perceptions of U.S. travelers regarding Colombia as a potential tourism destination, including their perception of risk. The framework of destination image and travelers’ behavior, including perceived risk, cognitive and affective images, and perceived value for the trip, was adopted. Data for these behaviors were collected using a self-administered online survey with U.S. citizens who had not visited Colombia. Hypotheses were tested employing Confirmatory Factor Analysis and the Partial Least Squares method to analyze the measurement and structural models. The results indicated that U.S. citizens had a positive affective and cognitive perception of Colombia, which led to …

Electrical Conductivity Of Subsurface Ocean Analogue Solutions From Molecular Dynamics Simulations, Catherine A. Psarakis, Timothy Tizhe Fidelis, Keith B. Chin, Baptiste Journaux, Abby Kavner, Pranb Sarker, Marshall J. Stycinski, Steven D. Vance, Tao Wei

Faculty Publications

Investigating the habitability of ocean worlds is a priority of current and future NASA missions. The Europa Clipper mission will conduct approximately 50 flybys of Jupiter’s moon Europa, returning a detailed portrait of its interior from the synthesis of data from its instrument suite. The magnetometer on board has the capability of decoupling Europa’s induced magnetic field to high precision, and when these data are inverted, the electrical conductivity profile from the electrically conducting subsurface salty ocean may be constrained. To optimize the interpretation of magnetic induction data near ocean worlds and constrain salinity from electrical conductivity, accurate laboratory electrical …

Beyond The Lines: Exploring The Impact Of Adverse Childhood Experiences On Ncaa Student-Athlete Health, Braden J. Brown, Jakob J. Jensen, Jennifer L. Hodgson, Alexander M. Schoemann, Damon L. Rappleyea

Journal of Issues in Intercollegiate Athletics

Emerging research has highlighted a link between adverse childhood experiences (ACEs) and various health concerns experienced by NCAA student-athletes. Building on prior work (Kaier, Cromer, Davis, & Strunk, 2015), we hypothesized that ACEs would significantly predict student- athletes’ biopsychosocial (BPS) health and that spirituality would serve as a protective factor against the effect of ACEs on BPS health outcomes. Division I, II, and III NCAA student-athletes (N = 477) representing 20 sports across 53 universities completed an online quantitative survey (k = 133) that assessed for ACEs, injury/physical health concerns, anxiety, depression, stress, social support, substance use, and spirituality. Nearly …

I Am Not Only A Student-Athlete: Investigating Social Identity Complexity As A Stereotype Threat Mitigation Strategy To Reduce Barriers To Academic Engagements, Jacob Alan English, Ann Cale Kruger

Journal of Issues in Intercollegiate Athletics

Collegiate athletes must contend with harmful stereotypes (e.g., intellectually lazy, unintelligent) during their academic careers (Comeaux, 2012). Research shows that student-athletes’ academic performance can be negatively impacted by stereotype threat (Riciputi & Erdal, 2017). Currently, there is no published evidence-based research on stereotype threat (ST) mitigation strategies targeted to student-athletes. Expanding the work of Gresky and colleagues (2005), this study explored a self-concept map activity, based on the social identity complexity theory, as one potential strategy for collegiate athletes. Seventy Division I athletes were randomly assigned to one of three experimental conditions (varying by the level of ST administered). ANOVA …

Special Issue Editors’ Note: High Impact Practices In Intercollegiate Athletics, Ellen J. Staurowsky, Anthony Weaver, Jessica R. Braunstein-Minkove, David Shonk

Journal of Issues in Intercollegiate Athletics

No abstract provided.

Stereotypes And Stigmas Of College Athletes In Tank Mcnamara’S Cartoon Strip: Fact Or Fiction?, C. Keith Harrison, Suzanne Malia Lawrence, Michelle Plecha, Scott J. Bukstein, Neza K. Janson

Journal of Issues in Intercollegiate Athletics

The purpose of this study was to explore the perceptions of National Collegiate Athletic Association (NCAA) Division I student-athletes (N= 43) regarding stereotypical cartoons about athletes. A qualitative approach, which included a visual elicitation technique, was utilized by administering the Lifestyle Association & Representation of Athletes Scale (LARAS). The LARAS explored participants’ perceptions of the following six specific concepts: a) academic support issues; b) academic progress; c) coaches as educators; d) professional sport aspirations; e) media identities, advertising, and representation; and f) cultural issues and recruiting. Five major themes emerged from participants’ perceptions: Big Sport Business, Athletic Image, College Athlete …

I Know I Can Learn: The Perceptions Of Ncaa Division I Football College Athletes With Learning Disabilities, Sarah Stokowski, Heather Blunt-Vinti, Robin Hardin, Benjamin D. Goss, Megan Turk

Journal of Issues in Intercollegiate Athletics

While 11% of all college students are reported to have a learning disability (National Center for Education Statistics, 2016), that percentage may be considerably higher when looking at National Collegiate Athletic Association (NCAA) Division I college athletes. Farrey (2009) reported as many as 54% of athletes on three revenue-producing teams at one institution had documented learning disabilities. Many students with learning disabilities are academically underprepared for the rigors of higher education and may be considered a vulnerable population within a higher education setting (Eckes & Ochoa, 2005). The purpose of this study is to examine Division I Football Bowl Series …