Digital Commons Network^™

Knowledge, Attitudes And Practices Regarding Sexually Transmitted Infections In South Carolina: A Cross-Sectional Survey And Comparison To Geographically-Associated Social Determinants Of Health, Sean Patrick Sweeney

Theses and Dissertations

Sexually transmitted disease (STD) rates are on the rise in the United States. South Carolina ranks consistently among the states with the highest STD burdens, especially for the bacterial diseases gonorrhea and chlamydia. This study sought to determine the opinions, beliefs, and knowledgebase of South Carolina citizens regarding STDs and sexual health/education. In doing so, the study seeks to identify areas of improvement for educators, healthcare workers, and public health employees. Using a web-based cross-sectional survey, this study contacted approximately 900,000 South Carolina residents for participation. Participants were asked a variety of questions focused on STD knowledge, opinions, and practices. …

Light Em' Up, Lorna Renee Young

Theses and Dissertations

In this thesis I will document and explore my process from researching the show to putting it on stage. Theatre is different from concert lighting which I have experience in but lighting in a theatre capacity is still new and through every show I was able to learn something new. Through this program I have learned how to successfully take a script from the paperwork to the stage.

Development Of A Large Format Additive Manufacturing System Based On An Off-The-Self Pellet Extruder, Aywan Das

Theses and Dissertations

Large Format Additive Manufacturing (LFAM), or Big Area Additive Manufacturing (BAAM), was introduced to resolve the limitations of the low deposition rate, low scalability, and therefore long print times, of traditional 3D printing methods when applied to the manufacturing of large structures and tooling. LFAM can be used to overcome the high conventional tooling costs of large structures. However, even with robotic setups, LFAM still mainly relies on quasi-planar, 2.5D printing strategies. This fails to reap the advantages of multi-axis printing, such as improved adhesion, reduced support material use, and the ability to create complex curved surfaces. In this research, …

Associations Between Neurological Correlates Of Reading And Learning Disability Profiles Among Children, Jessica Luedke

Theses and Dissertations

Early reading skills are vital for child development. Children with specific reading learning disabilities (SLD-R) display persistent difficulties acquiring reading skills. They are at an increased risk for adverse life outcomes, including mental health concerns, low educational attainment, and low academic motivation. Progress in neurobiological research provides opportunities to enhance the assessment and identification of learning disabilities by revealing distinct neurological patterns of learning. However, the integration of this progress with school psychology research is rare. The purpose of the current study was to evaluate brain network connectivity as a biomarker of reading using resting-state quantitative electroencephalography (QEEG) coherence. Fronto-central …

Antioxidant And Anti-Inflammatory Potential Of Engineered Ceria Nanoparticles In The Management Of Alzheimer's Disease, Shanshan Shi

Theses and Dissertations

Alzheimer's disease (AD) is a devastating neurodegenerative disorder that affects millions worldwide. Unfortunately, there are currently no effective therapies available to prevent or cure the disease. While current therapies aim to change AD progression, there is a growing need for novel therapeutic strategies that can effectively penetrate the blood-brain barrier (BBB) to target the underlying pathology of the disease. The BBB is a highly selective semipermeable barrier that separates circulating blood from the brain. It plays a crucial role in amyloid-β (Aβ) homeostasis and clearance dynamics, as Aβ accumulation is a key factor in the pathogenesis of AD. Aβ aggregation …

Preregistration And Registration As A New Method For Transparency Of External Validation In Artificial Intelligence And Machine Learning Applications To Address Overfitting, Underspecification, And Shortcut Learning, Marilyn Elaine Gartley

Theses and Dissertations

Statistics has been defined as the study of how information should be employed to reflect on and give guidance for action in a practical situation involving uncertainty. The essence of uncertainty is that there is more than one possible outcome, and the actual outcome is unknown in advance; it is indeterminate. The goal of statistical methods is inference: namely, statistical inference—reaching conclusions about populations or deriving scientific insights from data which are collected from a representative sample of that population through providing a mathematical understanding of inference, quantifying the degree of support that data offer for assertions of knowledge, as …

Interface Between Sensorimotor Dynamics And Trunk-Hip Movement Control: Implications For Movement Assessment In Low Back Pain, John Ryan Gilliam

Theses and Dissertations

Low back pain is the leading cause of activity limitation and work absence and results in billions of dollars in healthcare expenditures. Impaired trunk-hip movement control is associated with the development of back pain and the persistence of symptoms. Theories suggest a causal relationship between altered sensorimotor dynamics, including altered afferent somatosensory information from the periphery and neuroplastic central nervous system adaptations, and impaired trunk-hip movement patterns. We characterized trunk-hip movement patterns and their associated sensorimotor brain dynamics in people with and without chronic low back pain (cLBP). Supine, atop an instrumented system, 48 individuals with cLBP and 37 healthy …

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 …

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 …

Bracketed Assessments In Behavioral Gerontology: Evaluating Preference With Present And Absent Stimuli, Flavia Eduarda Del Castillo Troche

Theses and Dissertations

The present study evaluated the use of bracketed assessments to assess the activity preference of three individuals with dementia. The study proposed an alternative method to traditional stimulus preference assessments, to bridge the gap in behavior analytical literature within behavioral gerontology. Thus, bracketed assessments were conducted using two presentation methods, verbal plus visual presentation and verbal-only presentation. Results suggested that while participants showed consistency within low preferred activity selection in the bracketed assessment, variability was observed among participants’ preferences for high and moderate preferred activities. Both presentation methods yield similar selection results for one participant, however, the other two participants …

Cultural Selection Of Ethical Self-Control Toward Sustainability, Michael Jonathan Passage

Theses and Dissertations

This study consisted of three experiments to improve our understanding of the conditions that foster cooperation related to sustainability. In Experiment 1, participants completed a demographic questionnaire and an environmental and social discounting task. Results (a) support the utility of the environmental discounting task; (b) suggest responding to the discounting task is dissimilar; and (c) show that responding to hypothetical consequences on the social discounting task correlates to actual responding. Experiment 2 evaluated whether interlocking behavioral contingencies (by microculture members) associated with sustainable and non-sustainable aggregate products (Condition A & B) could be selected by cultural consequences (i.e., 20¢ toward …

Parallel Communications In Single-Core Optical Fibers Utilizing Spatial Domain Multiplexing And Wavelength Division Multiplexing, Mingxuan Tu

Theses and Dissertations

This endeavor proposes a hybrid parallel optical communication architecture in single-core fibers combining WDM in O-band (1270 nm, 1310 nm, 1310 nm, and 1330 nm) and two-channel SDM. The proposed architecture applies carefully designed delays in each propagating channel to achieve synchronization and, therefore, realizes parallel transmission in single-core fibers without the help of Serializer/De-serializers (SerDes). A mathematical model of SDM, calculations on delays between each optical channel, simulation of the hybrid architecture, experimental setup, and the testing and analysis of channel performance have been provided. A design of a photonic integrated circuit based on thin film lithium niobate electro-optic …

Translanguaging As Pedagogy And Culturally Relevant Science Instruction: Teaching In A Bilingual Science Classroom, Angelita J. Salinas

Theses and Dissertations

The continuous underrepresentation of the Latinx population in STEM fields and careers requires urgent attention. This study addresses this issue by designing and implementing a science curriculum based on culturally relevant and translanguaging pedagogies. Focusing on chemical and physical reactions, the curriculum was implemented in two 8th-grade science classes. Using an ethnographic case study methodology, this research employed classroom observations, field notes, student work analysis, and reflective interviews to gather data. Thematic analysis was conducted to identify key patterns and themes. The analysis revealed how instructional strategies were designed to ensure the relevance of instruction to students' cultural and community …

Improvement Of Triboelectric Nanogenerator By As-Prepared Lithium Niobate For Energy Harvesting And Sensing Applications, Jahid Inam Chowdhury

Theses and Dissertations

One readily available green energy source that is used to address the small-scale energy requirement is mechanical energy. To harvest mechanical energy, supply energy for upcoming electronic devices, and enable flexible health monitoring, triboelectric nanogenerators composed of perovskite and lightweight polymers have garnered significant interest. A material named lithium niobate (LiNbO3) was produced in two different phases and used to make a flexible triboelectric nanogenerator (TENG). Furthermore, lightweight polydimethylsiloxane (PDMS), Polyvinyl Alcohol (PVA), and LiNbO3 nanoparticles were used to produce a small triboelectric nanogenerator that successfully converts mechanical energy into electricity. LiNbO3 nanoparticles were first created and loaded into polydimethylsiloxane …

Mitigating The Greenhouse Gas Footprint Of Hydropower Via Floating Solar Photovoltaic Integration: A Modeling And Predictive Analysis Study, Areefin Ul Hassan Chowdhury

Theses and Dissertations

Hydropower is typically considered a low-carbon energy source; however, some hydropower facilities exhibit high greenhouse gas (GHG) intensities due to emissions from their reservoirs. This study evaluates the potential for offsetting GHG intensities by integrating floating solar photovoltaics (FPV) with reservoir-based hydropower. Our assessment indicates that technically feasible FPV–hydropower integrations could enable over 50% of the world’s GHG-intensive hydropower plants to achieve low-GHG energy benchmarks, with significant implications for both hydropower management and climate change mitigation. To support this analysis, we conducted clustering analysis to investigate the potential for reservoir segmentation. Following this, we applied various regression methods to predict …

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 …

Integration Analysis Of Nssm, Winlogon, And P2p Networks: Security Impact And Mitigation Strategies, Maisa Emneina

Theses and Dissertations

In today's digital world, where everything is interconnected, new security threats are constantly emerging. This thesis explores the security risks that come from the combination of three specific technologies: Non-Sucking Service Manager (NSSM), Winlogon Helper DLLs, and Peer-to-Peer (P2P) networks. NSSM is a powerful tool for managing services, but it can also be used by attackers to find and exploit system weaknesses. Winlogon Helper DLLs are essential for the Windows logon process, making them a critical target for attacks. When you add P2P networks into the mix, which many applications use to share data, the potential for security issues increases …

The Influence Of Unhelpful Supervisor Support On Employee Burnout Across Cultures, Charles Blomstrom-Johnson

Theses and Dissertations

Organizations continue to become increasingly interconnected globally, yet often fail to consider the cultural context of policies. Such failures to account for cultural differences may add to workplace stressors for employees, leading to an increased risk of burnout. Supervisors may attempt to buffer against burnout by providing social support to their employees. However, if the support given by supervisors is considered by the recipient to be unhelpful, these buffering effects may be reversed. Examining samples from the United States and Japan, this study hypothesized that unhelpful supervisor support and burnout would relate significantly to one another, and that culturally based …

Patient-Specific Hemodynamic Modeling For Optimizing Left Ventricular Assist Device And Right Heart Health, Holly Felice Grant

Theses and Dissertations

LVAD speed optimization is essential for efficient LVAD therapy and to minimize complications. However, the ideal LVAD speed is unknown and must be tailored for each patient. The interplay between the LVAD, systemic, and pulmonary circulations is critical and should be considered during optimization. A computational hemodynamic model that can be tailored for each patient may provide clinicians with useful guidance and reduce the need for repeated invasive studies. This study sought to customize and evaluate a patient-specific LVAD hemodynamic optimization model.

We conducted a retrospective analysis on 25 patients implanted with HM3 and who underwent right heart catheterization (RHC) …

A Strategic Communication Plan For The Clemente Center At Florida Tech, Cristiano Bozzolan

Theses and Dissertations

This design project develops a strategic communication plan for the Clemente Center at the Florida Institute of Technology, aimed at enhancing campus engagement. The methodology includes interviews, focus groups, a SWOT analysis, and secondary data analysis, providing insights into the communication dynamics at the center.

Key findings reveal a reliance on outdated communication methods and insufficient use of digital platforms. The proposed communication plan introduces optimized digital signage, targeted email campaigns, community engagement initiatives, and enhanced staff training. These strategies are designed to be cost-effective and actionable, addressing the center's current limitations and leveraging opportunities for improved community interaction.

This …

Evaluating The Influence Of Evtol Pilot Interface Visual Density And Information Density On Pilot Situation Awareness, Workload, And Search Performance, Bhoomin Bhupendrabhai Chauhan

Theses and Dissertations

The purpose of the current study was to investigate the influence of levels of visual density (VD) and information density (ID) of an electrical vertical take-off and landing (eVTOL) aircraft pilot interface on pilot situation awareness (SA), workload, and search performance. An eVTOL aircraft is a novel aircraft design that is able to perform vertical take-off and landing similar to a rotorcraft and transition to a forward flight, similar to a fixed-wing aircraft. These aircraft are envisioned to operate in urban environments at lower altitudes, necessitating efficient, clear, and concise pilot interfaces to ensure safety and operational effectiveness. The study …

Reality In Motion: An Audio Documentary Exploring The Fluid Essence Of Life, Alessandro Bonaiuto

Theses and Dissertations

Reality in Motion is a science communication project that aims to create an audio documentary based around the theme of movement in various aspects of life, both human and non. The project is a 30-minute podcast that explores the topic of life and movement through the lens of smaller stories. Guided by a main narrator, with the intervention of experts, Reality in Motion seeks to provoke thought and inspire curiosity about the intricate dynamics that shape our world.

Study On Pilot Response Time To Reject Takeoff With One Engine Inoperative (Oei), Lydia Savitri Scrivens

Theses and Dissertations

The FAA regulation 14 CFR § 25.109 defines accelerate-stop testing for transport-category multiengine aircraft. It specifies that testing must include 2-second distance equivalent at engine failure speed VEF to simulate time taken for pilot to reject takeoff. However, pilot response time is widely debated. The purpose of this study is to determine pilot response time in rejecting a takeoff due to the failure of one engine during the takeoff roll.

Seven multiengine rated pilots participated in this study, which was conducted in a Baron 58 in the X-Plane 12 flight simulator. During the recruiting process, test subject candidates provided their …

Development Of A Mechanical Boot For Prevention Of Deep Vein Thrombosis In Outpatients, Julian David Trevino

Theses and Dissertations

This work presents the development of a mechanical boot designed to prevent Deep Vein Thrombosis (DVT) in high-risk individuals such as those who have just had major procedures. DVT is a serious condition characterized by the formation of blood clots in the deep veins, particularly of the lower limbs, which can lead to life-threatening complications if not adequately addressed. The mechanical boot utilizes the principle of Continuous Passive Motion (CPM) to facilitate blood flow in the lower extremities, thereby mitigating the risk of clot formation. Through a combination of mechanical engineering, biomedical research, and user centered design, the project outlines …

Assessing The Effects Of Repetitive Mild Traumatic Brain Injury On Risk/Reward Decision Making And Catecholamine Associated Proteins, Christopher Knapp

Theses and Dissertations

Mild traumatic brain injury (mTBI) disrupts cognitive processes that influence risk taking behavior; however, the effects of repetitive mild injury (rmTBI) or whether these outcomes are sex specific are unknown. Risk/reward decision making is mediated by the prefrontal cortex (PFC), which is densely innervated by catecholaminergic fibers. Aberrant PFC catecholamine activity has been documented following TBI and may underlie TBI-induced risky behavior. Here, we exposed rats to sham (no injury), single, or three closed-head controlled cortical impact (CH-CCI) injuries to characterize the effects of rmTBI on 1) risk/reward decision making behavior using a probabilistic discounting task (PDT) and 2) levels …

Black Men Who Participate In An Urban Community College Men Of Color Initiative: A Phenomenological Study, Steven Hardy

Theses and Dissertations

This phenomenological study explored the perceptions and experiences of Black men who participated in the MOCI. The study uncovered insights into what aspects of the program were effective and where improvements could be made according to the student participants. Employing a phenomenological design, the research identified commonalities among the participants' experiences (Creswell & Creswell, 2018; Moustakas, 1994; Rubin & Rubin, 2012). The structure of understanding surrounding participants in the MOCI program was meticulously facilitated using phenomenology (Creswell & Creswell, 2018). The interviews were not just semi-structured but also empathetic, with prepared open-ended questions followed by probing inquiries, all aimed at …

Repair And Surface Functionalization Of Fiber Reinforced Polymer Composites By Cold Spray, Ibnaj Anamika Anni

Theses and Dissertations

Fiber-reinforced polymer composites are widely used in industries and applications such as energy, automotive, defense, and aerospace. This study investigates the application of polymer cold spray, an emerging additive manufacturing process, for coating and repair of fiber-reinforced polymer (FRP) composites. The research starts with feasibility studies focused on the cold spray deposition of thermoplastic nylon-6 particles on woven glass fiber-reinforced composites (GFRP). A parametric study determines critical process parameters window, ensuring successful deposition and bonding without compromising the macroscale mechanical behavior. These findings indicate that the cold spray process does not adversely affect the fiber integrity or surface quality of …

Chemotherapy Drug Release From Hollow Core Polyethyleneimine Nanoparticles, Brian Boyle

Theses and Dissertations

Novel anticancer delivery vehicles are arising from engineered nanostructured materials. This work involved the synthesis, characterization, and release of novel hollow core polymeric nanoparticles (HCPNPs) for controlled drug delivery. Polyethyleneimine (PEI) was bound to AuNPs, forming polymer-shell nanoparticles with dissolution of the gold core via iodine forming HCPNPs with drug intercalated DNA bound to the surface. A high density (85 molecules/particle) of DNA intercalated with daunorubicin was conjugated. Particles were spherical with an average diameter of 105.7 ± 17.3 nm and zeta potential of 20.4 ± 3.54 mV. We hypothesize the DNA backbone electrostatically condensed to the primary amines on …

Redefining Culture And Climate In The Alternative Setting: Dumping Grounds Or Where Students Are Found?, Joan Louise Barbagiovanni

Theses and Dissertations

This autoethnographic study aims to answer the following questions: How can a school leader design a culturally sensitive, inclusive alternative education program? What type of systemic change does an alternative school leader believe to be most effective in supporting students in attaining a high school diploma and a solid postsecondary plan to become productive members of society? What characteristics of culture and climate are most critical in an alternative school setting? The study focused on 4 years and tells how a school leader successfully changed the school culture and climate to best serve students and staff in the alternative school …

Matrix Processing With Photonic Analog Computing, James Michael Garofolo

Theses and Dissertations

In the digital age, a wide variety of engineering problems have been solved, to a great deal of success, by digital computing techniques. The flexibility of software and relatively low cost of digital computing hardware make it an ideal starting point for solving a majority of tasks, and the numerical stability of software solutions make it highly appealing as the major workhorse for computational tasks. Despite this, many problems are actually suboptimally solved by digital methods, leading to systems with high latency, low throughput, power hungry parallel processing units and an excess of memory for discretizing sensor inputs. Computational photonic …