Digital Commons Network^™

Comorbid Adhd And Pediatric Sickle Cell Disease: Prevalence And Risk Factors, Sarah Bills

Theses and Dissertations

Objective: Sickle cell disease (SCD) is a genetic blood condition that places youth at increased risk for deficits in attention and executive functioning suggestive of increased rates of Attention Deficit/Hyperactivity Disorder (ADHD). There is pronounced inconsistency in reported prevalence rates for attention deficits and ADHD diagnoses among youth with SCD, which is due in part to variability in methodology of previous studies. The primary aim of the present study is to use systematic screening to identify the prevalence of inattentive ADHD symptoms and ADHD diagnoses in a pediatric SCD population seen at a large hematology clinic. A secondary aim is …

Patient Experiences And Disparities In Telehealth Hiv Care During The Covid-19 Pandemic: Study Results From The Southern United States, Valerie Yelverton

Theses and Dissertations

Background: To maintain HIV care continuity during the COVID-19 pandemic, most HIV care facilities in the United States adopted telehealth. However, not everyone was participating in telehealth equally. This dissertation seeks to understand experiences with and the use of telehealth in HIV care, and decision processes guiding the selection of visit type during the COVID-19 pandemic.

Methods: Qualitative interviews explored people living with HIV’s (PWH) and HIV care provider’s experiences with telehealth HIV care and visit type decision processes. Quantitative analyses of electronic health record (EHR) data characterized patterns of and disparities in telehealth HIV care during the COVID-19 pandemic. …

An Examination Of Sustained Attention During Complex Multitasking Scenarios, Jonathan Cheshire Rann

Theses and Dissertations

This dissertation project examined the time-course of vigilance decrements that occur when operators perform demanding multitasking activities. For this aim, we conducted three experiments which implemented a novel paradigm we developed that measured performance during two sessions: a Single-Task session in which participants performed a go-no-go target detection task in the absence of any other task for approximately 12 minutes; and a Multi-Task session in which participants performed the detection task simultaneously with a driving-based tracking task for the same duration. A total of 183 participants from the University of South Carolina Department of Psychology took part in this study. …

Complementary And Integrative Health (Cih) And Opioid Use Among Adults With Chronic Noncancer Pain In The Us, Yi-Wen Shih

Theses and Dissertations

Chronic noncancer pain (CNCP) is defined as persistent pain lasting for more than three months due to conditions other than malignancy. This condition affects one in five American adults annually. The prescribing of opioids to individuals experiencing CNCP has been recognized as a critical contributor to the ongoing opioid crisis. In 2016, the Centers for Disease Control and Prevention (CDC) recommended Complementary and Integrative Health (CIH) as a nonpharmacologic treatment to be used among adults with CNCP. Despite the potential benefits of CIH for pain relief, there may be a discrepancy between individuals with CNCP and their insurance coverage for …

The Emergence And Predictive Utility Of Early Markers Of Social Anxiety In Young Children With Fragile X Syndrome, Conner James Black

Theses and Dissertations

Fragile X syndrome (FXS) is a monogenic neurodevelopmental disorder characterized by elevated rates of intellectual disability, autism, and anxiety. Social anxiety affects approximately 60 percent of individuals with FXS and is cited as one of the most impairing comorbid disorders in FXS; however, little is understood about the developmental patterns of social anxiety markers in young children with FXS. The current study investigates cardiac and behavioral markers of social anxiety across the first five years of life and tests the predictive utility of these variables on social anxiety symptomatology. Participants included 80 children with FXS and 50 neurotypical controls. Participants …

Mitigating Student Anxiety In The Secondary Classroom: A Culturally Sustaining Approach, Erin Hawley Cronin

Theses and Dissertations

This study emerged in response to broader trends of increasing anxiety among schoolchildren and my own observations as a teacher. Suicide is now the second-leading cause of death for youth (Curtin et al., 2022), and anxiety is a known factor in most deaths by suicide (Nepon et al., 2010). Teachers are often the first point of contact for anxious students, but a shortage of counselors in U.S. schools and other systemic barriers prevent widespread access to counseling services (Cratty, 2019). Moreover, identity-based anxieties are often misattributed to aggression or attention-seeking, and punished in school settings, instead of recognized and supported …

Tip Of The Iceberg In Changing School Culture: Acknowledging And Addressing Microaggressions, Nicole Lauren Becker

Theses and Dissertations

Providing a culturally responsive learning environment that allows students and faculty to feel safe and welcomed is essential. This action research study examined the harmful impact of microaggressions in the school and how providing targeted and comprehensive professional development sessions helped faculty members be able to acknowledge and address microaggressions. The research study was conducted in a large elementary school in the northeast United States that serves approximately 800 students. The researcher worked with the school administration team to identify microaggressions as a problem of practice. The focus group interviews, and six-week professional development series aided in the participants’ journey …

Colored Lawyer, Topeka: The Legend And Legacy Of Elisa Scott, Jeffery Scott Williams

Theses and Dissertations

Attorney Elisha Scott’s reputation for fighting injustice grew so large he received letters addressed only, “Colored Lawyer, Topeka, Kansas.” He was born in obscurity in 1890, but his death made national news in 1963. Scott’s story may not be known at all if his name was not often listed as counsel in Brown v. Board of Education, the 1954 case that desegregated public schools. But it was his sons who filed the case and helped fight it from Topeka to the United States Supreme Court. He was never officially part of the legal team. He had, however, won a …

The Effects Of Variations In Light And Nutrient Availability On Phytoplankton And Zooplankton, Jake Anthony Swanson

Theses and Dissertations

Aquatic ecosystems experience a wide range of variation in resource availability; two of the resources that are most essential to phytoplankton and zooplankton are light and nutrients. Light can vary in both its color and intensity; these variations can directly impact phytoplankton by altering the amount and color of light available for photosynthesis. Nutrient variability, particularly increases in nutrient levels, also alter phytoplankton communities by favoring the growth of certain taxa such as cyanobacteria.

To understand whether phytoplankton respond differently to changes in light availability I investigated whether the diversification of cryptophytes, phytoplankton with diverse light-capturing pigments, showed evidence of …

Where Race Has No Place: English Teachers’ Efforts To Maintain Space For Diversity In The Ela Classroom, Muzical D. Waite

Theses and Dissertations

The anti-critical race theory movement began in 2020, propelled by the fear of topics on race and racism overtaking lesson objectives, course content, and class discussion, and, in turn, making some students feel uncomfortable (Duhaney, 2022). Opposition to critical race theory (CRT) and any initiative considered adjacent to the concept, such as the promotion of diversity, equity, and inclusion, set in motion legislative proposals in nearly every state and enactment in many (Greene, 2022). Anti- CRT regulation of the content and activities teachers can use comes at a time when American student enrollment has never been more diverse (Carrillo, 2022). …

Liquid Cooling System For A High Power, Medium Frequency, And Medium Voltage Isolated Power Converter, Hooman Taghavi

Theses and Dissertations

Controlling and transforming electrical power from one form into another is the Primary function of the power electronics systems that are employed today. These systems have a wide variety of applications and are utilized in things like industrial automation, electric cars, consumer electronics, and renewable energy systems, among other things. The functioning of power electronics systems results in the production of a substantial quantity of heat, despite the fact that these systems are very dependable and efficient. This heat must be dispersed to preserve system performance and avoid component damage. By ensuring that the working temperature of the components stays …

The Hero Within: Developing The Psychological Capital Of First-Generation Students, Mary Elizabeth Sewell

Theses and Dissertations

Psychological capital (PsyCap) is a higher-order construct comprised of four psychological resources: hope, efficacy, resilience, and optimism (HERO), and has been linked to academic achievement and engagement (Hazan Liran & Miller, 2019; Luthans, et al., 2012). Interventions designed to build PsyCap may be particularly helpful for firstgeneration (FG) students who face additional challenges in higher education. This study aimed to: (1) explore differences in PsyCap among FG and continuing generation (CG) students; (2) investigate relationships between PsyCap, GPA, and persistence; and (3) examine the impact of a 2-hour PsyCap micro-intervention (PCI) on FG students’ academic PsyCap, academic achievement (GPA), and …

The Evolution Of Contextualized, Discourse-Based Professional Development To Support Elementary Teachers In The Implementation Of Conceptual Mathematical Teaching Practices, Jennifer Aren Kueter

Theses and Dissertations

This holistic, mixed-methods action research case study aimed to determine the influence of professional development on participants' mathematical teaching practices and how the changes influenced students’ opportunities for discourse. In this two-year study, participants engaged in two professional development phases and implemented new conceptual teaching practices. Quantitative data were collected through surveys and observations. Qualitative data were collected through observations and interviews. Phase-one findings showed that while teachers changed their practices, they were not proficient in conceptual and discourse-based teaching practices. A second phase of professional development occurred using a Community of Practice model. Phase-two findings showed conceptual teaching practices …

Computational Studies Of Bond Dissociation Energies And Organic Reaction Mechanisms, Shehani Thishakkya Wetthasinghe

Theses and Dissertations

This dissertation presents the progress of two independent projects. Chapter 2 and Chapter 3 focus on the first project, which involves material exploration utilizing machine learning techniques. We explore the potential use of cobaltocenium (CoCp⁺₂) derivatives as metal cations in anion exchange membranes (AEMs) for alkaline fuel cells, highlighting their superior thermal and alkaline stability compared to ammonium derivatives. The stability of CoCp⁺₂ can be fine-tuned by varying the substituent groups attached to the cyclopentadienyl ring (Cp) in CoCp⁺₂ .These derivatives encompass a variety of electron-donating and electron-withdrawing groups as substituents on both …

Comprehensive Method For Clarinet Latin American Music Heritage Case Study – Venezuela, Carmen Teresa Borregales

Theses and Dissertations

Latin American music and music-making have much to offer in their performance traditions and richness of genres, which demand technical proficiency and musicianship. In particular, some contemporary new music for clarinet carries traditional elements, including rhythmic patterns, accentuation, articulation, harmonic progressions, and instrumentation, among others. This study proposes an innovative approach to technical practice and skill development for clarinet, based on twelve etudes for clarinet, commissioned from twelve outstanding Venezuelan composers who explore Venezuelan traditional music genres. The results represent a comprehensive method for clarinet, appropriate for advanced-level players, and its application to pedagogical and performance practices.

Examining Recommended Strategies For Accommodating Negatively Worded Items, Jungsun Go

Theses and Dissertations

The purpose of this study was to investigate the effectiveness of four different models (bifactor, CTC(M-1), CTCU and unidimensional) as to optimal model selection when the wording effect associated with negatively worded items was present. A Monte Carlo simulation study was conducted to compare model-data fit and accuracy in parameter estimates of the four models. Design factors include: two true models (CTC(M-1), CTCU models) × three sample sizes (small N=250, moderate N=500, large N=1,000) × two item ratios (positive items:negative items = 2:1 or 1:1) × three distributions (distribution of negative items; symmetric, moderately asymmetric, and extremely asymmetric). The generated …

Hf Radar: Shining A Light On Ocean Currents, Douglas Cahl

Theses and Dissertations

High Frequency (HF) radar systems are commonly used to estimate surface ocean currents over the coastal ocean. Their range depends on their operational frequency and low frequency systems (≤ 10 MHz) can reach distances up to 200 km from the coastline. These systems are used to estimate surface currents by measuring the phase speed of wind-driven waves and comparing the measured speed with that expected theoretically; deviations from the theoretical still-water phase speed are attributed to ocean surface currents. Although HF radar systems are considered a mature technology and the accuracy of the radar-derived surface current estimates is well studied, …

From Roland To Gawain, Or The Origin Of Personified Knights, Clyde Tilson

Theses and Dissertations

Though there is a lot of work on the development of the novel, there has not been sufficient analysis of how it was formed, especially the shift towards the modern protagonist. By analyzing two medieval works, one from the early medieval period and one from the middle of the medieval period, the seeds of this shift can be seen. The works chosen were La chanson de Roland and Sir Gawain and the Green Knight as both have knights with fairly similar expectations, and both have been enduring characters in their respective national identities and literatures. Both Roland and Gawain, being …

Exploring The Agenda-Setting Dynamics Between Traditional Newspapers And Twitter During Mass Shooting Event, Yujin Heo

Theses and Dissertations

The purpose of this dissertation is to explore the intermedia agenda-setting interplay between traditional news media and Twitter in the wake of mass shooting incidents. Applying Latent Dirichlet Allocation (LDA) topic modeling to data sourced from Twitter, national, and local news, the study investigated the distinct coverage patterns and the extent of their reciprocal influence over time. The findings of this study demonstrated that, in the immediate aftermath of a shooting incident, national news outlets exerted a significant agenda-setting influence on both local media and Twitter discourse. However, as time unfolds, a mutually influential dynamic emerged across all media platforms. …

Measurement Of The Total Cross-Section Of Muon Neutrino Charged-Current Coherent Pion Production In Nova Near Detector, Kuruppumullage Don Chatura Dilshan Kuruppu

Theses and Dissertations

Charged Current (CC) coherent neutrino-nucleus pion production is characterized by small momentum transferred to the nucleus, which is left in its ground state. Despite the relatively large uncertainties on the production cross-section, coherent production of mesons by neutrinos represents an important process, as it can shed light on the structure of the weak current and can also constitute a potential source of background for modern neutrino oscillation experiments and searches for Beyond Standard Model (BSM) physics. This Ph.D. thesis presents a new measurement of CC coherent pion production in the NOvA near detector at the Fermi National Accelerator Laboratory (Fermilab). …

Conceptual Design And Preliminary Safety Analysis Of A Proposed Nuclear Microreactor For Mobile Application, A. S. M. Fakhrul Islam

Theses and Dissertations

Conceptual design and preliminary safety analysis of a proposed helium-cooled Micro Nuclear reactor In ONe megawatt (MINION) thermal output is done through three-dimensional computational analysis. Compared with the conventional high temperature gas-cooled reactors (HTGR) that use tri-structural or bi-structural isotropic (TRISO or BISO) fuel particles, MINION uses traditional clad fuel pellets. This greatly simplifies the core design and allows for a substantially more compact design thanks to the fuel’s signif-icantly higher U-235 atom density. Uranium carbide (UC) enriched up to 19.75% in U-235 is used as fuel. In the power-flattened design, U-235 enrichment varies radially between 19.75% and 10.5% in …

Developing A Vision-Based Framework For Measuring And Monitoring Water Resource Systems Using Computer Vision And Deep Learning Techniques, Seyed Mohammad Hassan Erfani

Theses and Dissertations

Increased vulnerability of water systems to extreme events and climate change is among the profound challenges facing the management of water resource systems around the world. Extreme events, including droughts, floods, and natural hazards have become more frequent and intensive, particularly in coastal regions. Floods, for instance, caused tens of billions of US dollars losses and put the lives of thousands in danger, globally. To cope with the adverse consequences of floods, a wide range of structural, non-structural, and emergency measures are studied and deployed by flood management sectors. Various flood simulation, mapping, and forecast systems have been developed to …

Extending The Convolution In Graph Neural Networks To Solve Materials Science And Node Classification Problems, Steph-Yves Mike Louis

Theses and Dissertations

The usage of graph to represent one's data in machine learning has grown in popularity in both academia and the industry due to its inherent benefits. With its flexible nature and immediate translation to real life observed objects, graph representation had a considerable contribution in advancing the state-of-the-art performance of machine learning in materials.

In this dissertation proposal, we discuss how machines can learn from graph encoded data and provide excellent results through graph neural networks (GNN). Notably, we focus our adaptation of graph neural networks on three tasks: predicting crystal materials properties, nullifying the negative impact of inferior graph …

Framing Police Brutality: An Analysis Of Newspaper Coverage Of Walter Scott’S Murder, Shamira S. Mccray

Theses and Dissertations

This research analyzes news articles about the killing of Walter Scott in 2015 to determine how frames changed over time and across platforms. Previous studies have found that news coverage of police violence against Black men has not always been fair. Instead, the narrative of official sources, like law enforcement, prove dominant. These same research articles typically focus on the way national news outlets frame incidents like Scott’s.

But this thesis takes a deeper look at how state newspapers framed Scott’s murder. I analyzed the frames and sources found in nearly 200 articles published by The Post and Courier and …

Measuring The Impact Of Peer Coaching On Teacher Effectiveness At Friendship County High School, Whittney Michele Mcpherson

Theses and Dissertations

Student success and achievement can be measured in myriad ways; however, the impact of teacher effectiveness in each classroom is an essential part of the formula for student success. Although most teachers work in isolation in their classrooms, it is important for school leaders to support student success by finding effective methods of supporting teachers. This study investigates the instructional coaching of novice teachers as a professional development tool to support student success and achievement. The specific aim of this study was to investigate if an intervention of instructional coaching was effective in supporting the development of equitable and effective …

Luis Abraham Delgadillo: A Rediscovery Of His Piano Music, Fanarelia Auxiliadora Guerrero López

Theses and Dissertations

Luis Abraham Delgadillo (1884–1961) is one of the most representative Nicaraguan musicians from the late nineteenth and early twentieth century. Works such as his Sinfonía Indígena (Indigenous Symphony), Suite Teotihuacán (Teotihuacán Suite), and Sinfonía Incaica(Incaic Symphony) positioned him as one of the most important composers and pianists from Latin America. He had great success during his career as a composer and toured North America and South America extensively during the 1930s and 1940s. During these visits, he had many of his works performed, and met other influential composers and musicians such as Carlos Chavez, Amadeo Roldán, Aaron Copland, Arthur …

University, City, And Community: Athletics Urban Renewal Projects And The University Of South Carolina’S Carolina Coliseum And Blatt Physical Education Center, 1964–1971, Theresa M. Harrison

Theses and Dissertations

Higher education institutions (HEIs) often are characterized by how they compete with other institutions. Institutions try to secure the most resources for their benefit, and this often includes expansion and land accumulation.¹ Increasingly common is land acquisition for athletics expansion or enhancement, because successful athletics programs build perception and prominence.² Historically, for large public universities in urban centers, athletics expansion or enhancement has negatively affected surrounding areas. Often, city centers are populated by Black and Brown community members due to the migration patterns of Blacks after World War II and subsequent racial segregation efforts that further segregated Communities …

The Post-Tonal Evolution Of David Diamond: A Theoretic-Analytical Perspective, William John Ton

Theses and Dissertations

David Leo Diamond (1915–2005) was a prolific and highly esteemed American composer whose works were premiered by such notable conductors as Dimitri Mitropoulos, Eugene Ormandy, Serge Koussevitzky, Leonard Bernstein, and Gerard Schwarz. In addition to his significant output and a large circle of famous friends and professional acquaintances, his sphere of influence also included his tenure as professor of composition at the Juilliard School where he worked from 1973 until 1997. His impressive roster of students includes distinguished composers such as Lowell Liebermann, Eric Whitacre, and Vivian Fung. Despite his stature as a composer, however, there is a surprising lack …

Supporting Black Students In Sixth-Grade Science Through A Social Constructivist Approach: A Mixed-Methods Action Research Study, Kirk Anthony Heath

Theses and Dissertations

The purpose of this mixed-method action research study was to improve Black students’ performance in my sixth-grade science class by improving their ability to use the claim, evidence, and reasoning (CER) framework. Using criterion-based convenient sampling, I enlisted 17 Black participants, all of whom were underperforming in my science class at a suburban, middle-class, predominantly White public middle school serving Grades 6–8. As a teacher researcher, I implemented and assessed an intervention designed to improve their ability to use the CER framework. Using a mixed-method action research design, I simultaneously collected and triangulated quantitative and qualitative data.

This study may …

Platform Of Growth: An Analysis Of Earnings And Social Media Engagement Among Esports Athletes, Colleen Marie Dibble

Theses and Dissertations

Esports consists of online gaming, cyber sport, and virtual sport in a highly competitive environment. The industry has grown tremendously over the last 30 years (Leroux-Parra, 2020). Professional esports competitions are often now contested with a large scale, global audience, and millions of dollars potentially at stake in some competitions. Hundreds of esports athletes earn a living from the multi-billion-dollar esports industry. In addition to players earning salaries and prize pool money in a professional setting, many colleges have offered scholarships to enrolled students and have begun to offer esports-related curriculums (Dominguez, 2022). Networks such as ABC, ESPN, and TBS …