Digital Commons Network^™

Successful Subject Headings For Moving Image Resources, Jen M. Jones, Charlotte G. Grubbs, Scott M. Dutkiewicz

South Carolina Libraries

Based on an SCLA conference presentation, this article explores principles for assigning subject headings to moving images. Using a digital metadata-inspired graphic organizer, authors discuss case studies illustrating the Library of Congress’ Subject Headings (LCSH) Manual, instruction sheet H 2230, noting commonly omitted facets and misinterpretations of subject and subdivision usage. Emphasis is on LCSH and instructions in LCSH authority records.

Whole-Genome Assembly And Annotation Of The Firecracker Penstemon (Penstemon Eatonii), David E. Jarvis, Mikel R. Stevens, Payton Carter, Ying Fei Lin, Kate E. Jaggi, Gabriela Jijon, Teal Kalt, Jouber Calixto, Samantha Standring, Kaitlin Torres, Kayla B. Stephensen, Hayley Mangelson, Noah H. Williams, Carolyn A. Wessinger, Peter J. Maughan, Paul B. Frandsen

Faculty Publications

The penstemons are ornamental annual flowering plants native to the Intermountain West and Rocky Mountains and commonly used for urban landscaping. Elite commercial penstemons are generally susceptible to abiotic stresses, including drought, root rot, cold, and high salinity. Firecracker penstemon (Penstemon eatonii), however, is much more tolerant to these stresses than most elite cultivars. Importantly, firecracker penstemon has been reported to hybridize with many other penstemons and therefore provides the opportunity to develop more tolerant elite cultivars through strategic crossing. To facilitate the study and utilization of firecracker penstemon, we sequenced and annotated the genome of a P. …

Teaching Critically In Contentious Times Black Consciousness, Historical Knowledge, And Educational Policy, Lagarrett J. King, Daniella Cook Sumpter

Faculty Publications

Editors’ Introduction to Special Section of Critical Education: Teaching Critically in Contentious Times

Association Of Nucleoside Reverse Transcriptase Inhibitor Use With Reduced Risk Of Alzheimer's Disease Risk, Joseph Magagnoli Ph.D., Ms, Meenakshi Ambati, Tammy H. Cummings, Joseph Nguyen, Claire C. Thomas, Vidya L. Ambati, S. Scott Sutton, Bradley D. Gelfand, Jayakrishna Ambati

Faculty Publications

INTRODUCTION

Inflammasome activation is implicated in Alzheimer's disease (AD). We previously demonstrated that nucleoside reverse transcriptase inhibitors (NRTIs), drugs approved to treat human immunodeficiency virus (HIV) and hepatitis B, also inhibit inflammasome activation.

METHODS

We evaluated the association between NRTI exposure and subsequent development of AD in the United States Veterans Health Administration over a 24-year period and in the MarketScan database over a 14-year period using propensity score-matched multivariate Cox hazards regression and Kaplan–Meier analyses.

RESULTS

We report that in humans, NRTI exposure was associated with a significantly lower incidence of AD in two of the largest health insurance …

Whole-Genome Assembly And Annotation Of The Firecracker Penstemon (Penstemon Eatonii), David E. Jarvis, Mikel R. Stevens, Payton Carter, Ying Fei Lin, Kate E. Jaggi, Gabriela Jijon, Teal Kalt, Jouber Calixto, Samantha Standring, Kaitlin Torres, Kayla B. Stephensen, Hayley Mangelson, Noah H. Williams, Carolyn A. Wessinger, Peter J. Maughan, Paul B. Frandsen

Faculty Publications

The penstemons are ornamental annual flowering plants native to the Intermountain West and Rocky Mountains and commonly used for urban landscaping. Elite commercial penstemons are generally susceptible to abiotic stresses, including drought, root rot, cold, and high salinity. Firecracker penstemon (Penstemon eatonii), however, is much more tolerant to these stresses than most elite cultivars. Importantly, firecracker penstemon has been reported to hybridize with many other penstemons and therefore provides the opportunity to develop more tolerant elite cultivars through strategic crossing. To facilitate the study and utilization of firecracker penstemon, we sequenced and annotated the genome of a P. …

April 30, 2025 General Faculty Minutes, University Of South Carolina

Faculty Senate

No abstract provided.

Integrated Coastal Science And Dune Management: A South Carolina Perspective, Michelle Harris

Theses and Dissertations

Historically, coastal dunes have been poorly understood from a societal perspective despite their protective role in attenuating incoming waves to reduce onshore flood risk. As developed coastlines promote strategies to design and maintain managed dune systems, it is necessary to ensure these strategies are optimized for dune health and resilience, particularly given the increasing threat of natural and anthropogenic stressors. This dissertation work aims to identify strategies that influence coastal dune management in South Carolina (SC), USA from an integrated approach, including a current use assessment, a mesoscale field-based study on strategy efficacy, and by incorporating a societal assessment and …

Thematic Geo-Inquiry In Seventh Grade Geography, Rebekah Driscoll Austing

Theses and Dissertations

With the growth of globalization, geography is an important subject for students of the 21^st Century to understand. Being adept in geography will aid our future generations to be able to use geographic skills to answer complex world issues. Unfortunately, geography has been a long-neglected subject of social studies; often considered boring and not worthwhile with teachers using teacher-centered curriculum methods and memorization. A teacher’s job is to provide appropriate experiences, materials, and context for students to construct and connect knowledge that is useful and beneficial to them. Through a constructivist lens, inquiry-based thematic units can be used by …

New Deep Learning Approaches To Classical Statistical Problems, Shijie Wang

Theses and Dissertations

The field of deep learning (DL) has received considerable attention in recent years. Thanks to rapid growth in computational power, the ability to collect massive datasets, and improvements in software and algorithms, DL is now routinely applied to areas as diverse as computer vision, natural language processing, and bioinformatics. At the same time, DL is only starting to be explored in the context of classical statistical inference problems such as bootstrapping, quantile regression, and mixture modeling. In this dissertation, we develop new DL methodology for three classical statistical problems: 1) weighted M-estimation, 2) joint quantile regression, and 3) mixing density …

Understanding The Through-Space Intermolecular Interactions Of Isothiourea Catalysts In Acylation/Silylation Reactions Of Secondary Alcohols, Ziyuan Gong

Theses and Dissertations

Through space interactions, including cation-π interaction, lone pair-πinteraction, steric hinderance etc. play a central role in organocatalytic reaction. They can control the reactivity or the selectivity of an organic reaction. Previous work in our group has already shown that the chiral isothiourea compounds can catalyze the acylation as well as silylation reaction of secondary alcohol with the possible cation-πinteraction between the catalyst and substrate. However, there is lack of study to understand how the delocalization of the positive charge would affect the reaction rate and whether some unexpected inter- or intramolecular interaction could help stabilize …

“A Threat To The Family”: Phyllis Schlafly And The Construction Of Negative Group Identity, Christopher Howell

Theses and Dissertations

In this dissertation, I argue that Phyllis Schlafly’s fight against the proposed Equal Rights Amendment (ERA) from 1972 to 1976 helped construct the “pro-family” political identity that opposed the ERA and came to define social conservatism in American politics. She did this through the creation and elaboration of a negative group identity: individuals defined by their desire for an imagined past of traditional, stable hierarchies. By taking an anodyne piece of legislation and framing its supporters as direct threats to the status quo, Schlafly effectively mobilized a group of previously apolitical actors towards political activism. In the process, she helped …

Mapping Fire Susceptibility Of The South Carolina Coastal Plain, Breonna Roden

Theses and Dissertations

Wildfires are a natural hazard that have occurred across the world, throughout time. Regions prone to wildfires have been experiencing changes in their fire regimes. Not only has the fire season length increased, but the fires themselves are increasing in frequency and intensity. Wildfire research has been limited for the state of South Carolina, raising concerns along with global warming and population growth. Global warming is likely to become more extreme, which can lead to droughts becoming more frequent and lasting for longer periods of time. According to the 2020 census, South Carolina was the 10th fastest-growing state, which is …

Bridging The Gap Between Science And Technology: A Descriptive Study Identifying Factors Influencing 6-8th Grade Science Teachers’ Implementation Of Virtual Laboratory Simulations, Coral Nicole Hoesli

Theses and Dissertations

Teachers at a South Carolina middle school in the United States were not implementing virtual laboratory simulations at the same rate as other middle schools in the district. This descriptive research examined 6th-8th grade middle school science teacher perceptions and influencing factors behind the choice to implement virtual laboratory simulations. The study examined two research questions: (1) what are the personal and social factors influencing science teachers’ decisions to implement a virtual laboratory simulation, and (2) what are the structural factors influencing science teachers’ decisions to implement a virtual laboratory simulation?

The National Educational Technology Plan (NETP) and the International …

Young Children’S Reading Experiences In An Online Family Book Club Centered On Multimodal Responses, Ling Hao

Theses and Dissertations

This ethnographic case study explored Chinese American children’s heritage language and culture learning and their multimodal responses to culturally relevant picture books. I focus on six Chinese American families who participated in an online family book club. The children were between four and six years old. In each session, I first introduced Chinese characters or cultural traditions related to the book, and then had an interactive read aloud of a culturally relevant picture book. The children discussed the book with one parent and came up with a question and a connection. The children then responded to the book through creating …

How Exposure To Professional Development Affects Teachers’ Use Of Tier One Behavior Interventions, Taurean Jarquise Robinson

Theses and Dissertations

Research suggests that ongoing professional development is most beneficial for teachers. However, many schools cannot provide the time teachers need to participate in the frequent meetings, discussions, and reflections needed to cause professional growth. Student behavior continues to be an area in which teachers need support. Many teachers report that student behavior is one reason they often become unhappy with their jobs and leave their education career altogether. The qualitative action research study used strategies aligned with Culturally Relevant Pedagogy to offer six teachers professional development in Tier 1 behavior interventions. The data gathered measured how much Tier 1 behavior …

Gateways To Reading: Action Research With At-Risk Students At An Alternative School, David Sean Goff

Theses and Dissertations

There is no shortage of research on how low levels of literacy disproportionately affect students of color, but this research was interested in how three theoretical models may impact this trend. The purpose of this qualitative case study was to examine the reading experiences and engagement levels of students in an alternative school English class, applying culturally relevant pedagogy (CRP), self-determination theory (SPD), and zone of proximal development (ZPD). CRP is a theoretical model that upholds students’ cultural identities, while pursuing academic success. ZPD is a theoretical model that suggests learning occurs when content is within students’ ability. SDT is …

Systems Check: A Qualitative Case Study Of Educators And Parent-Educators Supporting Adolescent Readers From An Ecological Systems Perspective, Kristi Nicole Grooms

Theses and Dissertations

In spite of decades of research and an abundance of well-intentioned intervention efforts, supporting adolescent readers, particularly at the middle level, remains a significant area of concern for educators in the United States. The struggles are present for educators working to help underperforming readers reach grade-level and keep advanced readers motivated and engaged. At home, parents and guardians experience similar challenges. Data on adolescent comprehension performance continues to be frustrating in terms of producing consistent positive results. This qualitative action research study investigated the ongoing challenge of supporting adolescent readers, specifically within the context of 7th grade, through a systems …

Extracting Metamorphic Histories Utilizing U-Pb Laser Ablation Zircon Geochronology From The Southern Appalachians Crystalline Rocks And Detrital Sediment, Meredith Kay Love Gawai

Theses and Dissertations

The southern Appalachian mountain belt is an accretionary orogen that formed in the southeastern United States through several phases of oceanic subduction and continental collision during the Paleozoic Era and culminated in the formation of the supercontinent Pangaea. Although many U-Pb zircon ages have been collected from the igneous, metaigneous and metasedimentary rocks in the crystalline core of the southern Appalachians, there remain opportunities to better reconstruct the metamorphic and magmatic history of the southern Appalachians through the lens of zircon geochronology. Such data are valuable in identifying genetic relationships between candidate terranes of the orogen. Herein, I present laser-ablation …

Symmetries Of Del Pezzo Surfaces, Jonathan Smith

Theses and Dissertations

For each del Pezzo surface X of degree d, the action of the automorphism group Aut(X) on the exceptional curves of X induces a map ρ : Aut(X) → W(R_d), where W(R_d) is the Weyl group of a root system R_d dependent on the degree of X. The image of ρ is well defined up to conjugacy in W(R_d), so we say that a group G acts by automorphisms on a del Pezzo surface X of degree d if a representative of the …

Targeting The Country: Exploring The Technology Integration Practices Of World Language Teachers In Rural Georgia, Shannon Borum

Theses and Dissertations

Technology integration affords World Language teachers opportunities to engage with the target language and cultures in a way previously unknown, yet world language teachers in Georgia’s rural high schools have inconsistent integration of technology into their teaching practices. The study was guided by two research questions regarding (1) the current technology integration practices of world language teachers in rural Georgia high schools for communicative language teaching, and (2) the influences the decisions of world language teachers in rural Georgia high schools to integrate technology in their communicative language teaching. The purpose of this action research was to describe how high …

Relative Performance Of Mlr, Wlsmv, And Bayes Estimators: An Investigation Using Confirmatory Factor Analysis With Ordinal Data, Tiejun Zhang

Theses and Dissertations

This study investigated the performance of four robust estimators— robust Maximum Likelihood for continuous data (MLR-CON), robust Maximum Likelihood for categorical data (MLR-CAT), robust Weighted Least Squares (WSLMV), and Bayes estimation—in the context of Confirmatory Factor Analysis (CFA) with ordinal data. The objective was to conduct a comprehensive assessment of their efficacy across varied data conditions. A simulation study was designed to comprise conditions that may be encountered with empirical research. The design included 90 cells with two levels of model specification (correct, misspecified), three sample sizes (100, 200, 500), five item distributions (symmetric, moderately asymmetric, moderately asymmetric-alternating, extremely asymmetric, …

Building A Framework For Analyzing Non-Linear And Multidimensional Kinetics, Mainak Dhar

Theses and Dissertations

Many materials exhibit multiple rates of molecular relaxation due to structural complexities. Standard linear and one-dimensional kinetic cannot extract all the necessary dynamic information about these systems. This dissertation contributes to an overarching scheme to develop new non-linear and multidimensional kinetic experiments to obtain this information. The studies span computation and experiments, picosecond to second timescales, and both single-molecule and pulsed-laser kinetics

Single-molecule kinetics experiments yield time series that contain information about unique structural and dynamic properties of materials. However, these time series are noisy, and data analysis is challenging. Parametric methods are computationally intensive and require strong, unverifiable assumptions …

Explorations Of Multi-Carboranyl Thiols And Phosphines, Jared Ross Riffle

Theses and Dissertations

In order to ascribe the impact of substituent groups on the bis-ortho-carborane, closo-{C2B10}-closo-{C2B10} multi-cluster system, the first sulfur-containing biscarborane derivatives were synthesized. Biscarborane dithiol, disulfide, bis(methyl)thioether, as well as multiple dithiolate salts were structurally characterized. The exceedingly long C–C bonds and shortened C–S bonds in biscarborane dithiol and its doubly deprotonated dithiolate salts are indicative of significant delocalization of electron density from the sulfur atoms into the cluster. Additionally, a new concept of ligand ambiphilicity is described where, instead of the involvement of only a single center in a ligand, this amphiphilicity relies on the redox behavior of the indirectly …

Photometric Redshifts Of Galaxies In Quasar Fields, Ananthavishnu Santhigiri Unni

Theses and Dissertations

Understanding the gas in and around galaxies is crucial for understanding galaxy evolution. Absorption lines detected in the spectra of background quasars offer a powerful tool to study the gas in and around the intervening galaxies. As a part of an effort to understand how the gas interacts with the stellar component of galaxies, our team previously obtained imaging and spectroscopic observations for a large sample of galaxies using the Hubble Space Telescope (HST), the Very Large Telescope (VLT), and the Atacama Large Millimeter Array (ALMA). This sample includes thousands of galaxies, including many without spectroscopic data. The overall goal …

The Impact Of Microlearning Professional Development On Educator Social And Emotional Competencies And Beliefs About Middle School Students’ Social And Emotional Learning, Kelly M. Abbott

Theses and Dissertations

The COVID-19 pandemic disrupted educational experiences for students with extended school closures and social distancing during the 2020-2021 school year and beyond. School closures, social isolation, and societal issues impacted students and caused mental health challenges as well as behavioral issues in the classroom. This study explored the impact of educator social and emotional competencies (SEC) on social and emotional learning (SEL) in the classroom. Previous research on SEL has found benefits to student’s relationship skills, emotional regulation abilities, and increases in academic achievement. This action research study used a mixed method design to gather data from surveys, interviews, classroom …

Enhancing Self-Efficacy For Engagement With Diversity, Equity, And Inclusion Initiatives: Evaluation Of A Seven-Day Immersive Pilot Program In A College Of Education, Health, And Human Sciences, Jennifer M. Jabson Tree, Stefanie Benjamin, Dorian L. Mccoy Ph.D.

Faculty Publications

Colleges of health, human sciences, and education are often administratively organized to include a diverse array of human sciences departments that share roots in social justice and a commitment to advancing equity and inclusion. Despite espoused commitments to equity and inclusion, they frequently struggle to achieve the changes necessary for advancing equity, and inclusion principles across policies, practices, procedures, and units. We implemented and evaluated a 7-day, total immersion, 56-h, educational program entitled the “Social Justice Institute” (SJI) for two cohorts of faculty, staff, and administrators to develop self-efficacy to intervene in systemic oppression in their academic units. SJI delivered …

Scalable Cyber-Physical Testbed For Cybersecurity Evaluation Of Synchrophasors In Power Systems, Shuvangkar Chandra Das, Tuyen Vu, Hebert L. Ginn Iii

Faculty Publications

This paper presents a synchrophasor-based real-time cyber-physical power system testbed with a novel security evaluation tool, pySynphasor, that can emulate different real attack scenarios on the phasor measurement unit (PMU). The testbed focuses on real-time cyber-security emulation using different components, including a real-time digital simulator, virtual machines (VM), a communication network emulator, and a packet manipulation tool. The script-based VM deployment and software-defined network emulation facilitate a highly scalable cyber-physical testbed, which enables emulations of a real power system under different attack scenarios such as address resolution protocol (ARP) poisoning attack, man-in-the-middle (MITM) attack, false data injection attack (FDIA), and …

Cost-Effectiveness Analysis Of Aducanumab Versus Placebo For Patients With Mild Cognitive Impairment And Mild Alzheimer’S Disease, Xiaomo Xiong, Gang Lv, Jacob Jordan King, Minghui Li, Jing Yuan, Z Kevin Lu

Faculty Publications

Objectives To assess the cost-effectiveness of aducanumab at its updated price for treating patients with mild cognitive impairment (MCI) and mild Alzheimer’s disease (AD).

Design Cost-effectiveness analysis.

Settings A five-state Markov model was constructed using 10 000 virtual patients to assess the cost-effectiveness of aducanumab from the perspective of the US healthcare system. The model employed a one-year cycle time and a lifetime time horizon. Transition probabilities and mortality rates were derived from a literature review. To address uncertainty and generalise the base case results, both one-way and probabilistic sensitivity analyses were conducted.

Participants 10 000 virtual patients with MCI …

Feature Typology And L2 Proficiency Matter: L3 Acquisition Of Portuguese, Mila Tasseva-Kurktchieva, Danielle Fahey

Faculty Publications

To determine the source of transfer in third language acquisition (L3A), we tested the effects of grammatical feature typology and L2 Spanish proficiency on the comprehension and production of grammatical [gender] and [number] in the early stages of L3A of Portuguese. We distinguish between the two features based on their participation in the lexical-conceptual structure of the lemma and its interaction with the morpho-syntactic derivation. L1 English speakers were tested on their knowledge of the features in both their L2 and their L3 through a grammaticality judgment task and an elicited production task. Results show that L3 learners transfer only …

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 …