Digital Commons Network^™

Quality & Credibility Ff Adhd Information On Social Media And Adhd Help-Seeking Intentions, Saara Zakkiya Nasruddin

Electronic Theses and Dissertations

Background: There is an increased prevalence of adult Attention-deficit/hyperactivity disorder (ADHD), and stimulant prescription use in the United States, especially when compared to years prior to 2020. Due to accessibility and popularity of ADHD on social media, many individuals gain information on ADHD from these sources. People may view information on social media as credible due to its ability to provide connection, community, and empowerment. However, content analyses of ADHD information on social media show the quality of content on social media is poor. These content analyses utilized outdated quality evaluation tools that are not specific for social media. Principles …

Open-Source Frameworks For Groundwater Analytics: Advancing Machine Learning Workflow Development And Deployment, Sarva Pulla

Electronic Theses and Dissertations

This dissertation introduces three innovative tools to advance groundwater analytics: the GRACE Downscaler, Synthetic Timeseries Generator, and a lightweight web-based service for deploying machine learning and physical models. These tools address critical challenges in groundwater management by enhancing the local applicability of GRACE satellite data, overcoming data scarcity through synthetic generation, and simplifying the deployment of complex hydrological models. The GRACE Downscaler provides a reproducible workflow for regional groundwater analysis, while the Synthetic Timeseries Generator creates opportunities for model development in data-poor regions. The web-based service demonstrates how advanced models like MODFLOW can be made accessible for rapid simulations and …

Breaking Barriers: Ben Williams Integrates Ole Miss Football, Fredderick Nettles

Electronic Theses and Dissertations

Breaking Barriers: Ben Williams Integrates Ole Miss Football is a written and visual thesis that explores the life and cultural legacy of Robert Jerry “Ben” Williams — the first Black football player at the University of Mississippi — while tracing a broader lineage of Black pioneers in American football. Structured through a multi-chapter analysis, this work examines the significance of Williams’s quiet leadership during a time of racial unrest in Mississippi, alongside historical figures like Fritz Pollard and Woody Strode, who first paved the way for racial integration in football.

Through archival research, interviews, and narrative storytelling, the thesis also …

Substance Use Amongst Veterans Following Post-Deployment Reintegration: An Examination Through The Lens Of Acculturation, Brittany Hampton

Electronic Theses and Dissertations

Each year, approximately 46.3 million Americans are diagnosed with substance use disorder (SUD), which costs the United States healthcare system approximately $13 billion in annual costs. One group particularly at risk for SUD is veterans due to the unique stressors that veterans face (e.g., being apart from loved ones, exposure to life threatening events, transitioning between military and civilian life) and a military culture that often reinforces maladaptive patterns of substance use. Little research has been done to examine substance use as a negative outcome associated with the acculturative experience veterans face when transitioning from military life back to civilian …

Regional Differences In The Adoption Of Automated License Plate Readers Among Police Departments, Dalton Lee Massingill

Electronic Theses and Dissertations

Since the 2000s, the adoption of License Plate Readers (LPRs) in the United States has steadily increased. Prior research has shown that agency characteristics (mainly size) strongly impact the likelihood of LPR usage. However, researchers have primarily examined larger police departments and used smaller samples in examining the adoption of LPRs. This study uses recent data from a nationally represented sample of law enforcement agencies to examine the relationship between agency geographical location and LPR usage. The current study extends past literature by examining the impact an agency’s geographical location has on LPR usage. Research has not studied if LPR …

The Impact Of A First-Year Experience Course On The Persistence And Retention Of Community College Students, Edward Campbell Mclaughlin

Electronic Theses and Dissertations

This study aimed to explore the connections between student persistence and retention and students who participated in a First Year Seminar (FYS) called the First-Year Experience Course at a Mississippi community college during the 2022 fall semester and students who were enrolled at the college in the fall of 2018 and took the traditional orientation course. By gathering and utilizing archival data from the community college student database, this study sought to determine if taking the First-Year Experience Course is positively related to students’ persistence into the spring semester of 2023 and their retention into the fall of 2023.

Chi-square …

Pi3k Signaling And Its Role In Cardiac Morphogenesis, Rabina Shrestha

Electronic Theses and Dissertations

The formation of the heart tube in vertebrates involves the coordinated movement of bilateral myocardial precursors to the midline, where they merge in a process known as cardiac fusion to form the primitive heart tube. While external influences from the anterior endoderm and the endocardium are known to be essential for cardiac fusion, intrinsic myocardial mechanisms are less understood. Here, we identify an intrinsic PI3K-dependent mechanism directing myocardial cells toward the midline during cardiac fusion. We found that inhibiting the PI3K pathway throughout the embryo using chemical inhibitors and injection of dnPI3K mRNA results in cardiac fusion defects. PI3K-inhibited embryos …

Isolation Of Novel Myxobacteria And Progress Towards Heterologous Expression Of Uncharacterized Secondary Metabolites, Andrew Ahearne

Electronic Theses and Dissertations

Myxobacteria, first observed by Roland Thaxter in the late 19th century, are known for their unique swarming behavior, complex fruiting body formation and biosynthetic potential. Myxobacteria are noted for their large genomes and the presence of numerous biosynthetic gene clusters (BGCs) that hint at their potential to produce novel metabolites with therapeutic properties. Isolation of myxobacteria utilizing E. coli and filter paper baiting yielded 20 myxobacteria isolated from rhizospheric soil samples in North America. Among these isolates, nine were identified as novel species, representing the genera Archangium, Myxococcus, Nannocystis, Polyangium, Pyxidicoccus, Sorangium, and Stigmatella. Comprehensive growth profiles, biochemical assays, and …

Essays On Institutions And Growth, Fouzia Zafar Awan

Electronic Theses and Dissertations

This dissertation comprises two projects, one focusing on the IMF and economicgrowth, and the other on Economic Freedom of the World (EFW) and economic growth.

Make It Funny! Developing A Novel Humor-Based Digital Positive Psychology Intervention To Investigate The Influence Of Duchenne Laughter And Mirth On Psychological Distress In Daily Life, Joshua Semko

Electronic Theses and Dissertations

The aim of the present research was to develop a novel digital humor-based PPI (Make it Funny!) to investigate the influence of Duchenne laughter and mirth on psychological distress in daily life. Participants (N = 159; Agemedian = 39 years; 47.77% biologically female; 68.15% White) were tasked with completing Make it Funny! or a placebo activity every day for 7 days. Duchenne laughter frequency had a small negative cross-sectional moderation effect on the relationship between the occurrence of stressful events and psychological distress (t(79.71) = -2.33, b = -10.89, p = .022). Within participants, Duchenne laughter frequency slightly increased the …

Formulation Development Of Simvastatin Self-Emulsifying Drug Delivery System Using Hot Melt Extrusion, Srikanth Chilamula

Electronic Theses and Dissertations

Simvastatin, a potent HMG-CoA reductase inhibitor, lowers cholesterol levels. It prevents cardiovascular events like heart attacks and strokes in patients with high cholesterol and heart disease. However, its oral bioavailability is limited due to its poor aqueous solubility The current study aims to enhance the solubility of the poorly water-soluble drug simvastatin through the development of self-emulsifying drug delivery systems (SEDDS). Gelucire® 48/16 (oil), Gelucire 44/14 (surfactant), and Cremophor RH40 (co-surfactant) were assessed as potential excipients for SEDDS formulation. Initial SEDDS (Before adsorption) formulations were created based on the solubility of simvastatin in solid lipid excipients, as determined by a …

Imaginative Play In The Inculcation Of Creativity As An Intellectual Virtue, Annie Elisabet Gustafsson

Electronic Theses and Dissertations

Creativity, defined as the ability to generate original and innovative ideas and products, is widely valued yet not explicitly taught. This largely stems from the understanding that creativity cannot be cultivated through traditional methods like imitation or direct instruction, as such approaches contradict the essence of creativity itself. However, we must not write it off as unteachable. To help us better understand what can be done to teach creativity effectively, we must consider its character.

This paper offers a theory of creativity as an intellectual virtue, drawing on Linda Zagzebki’s components of virtue and aligning creativity with Aristotle’s phronesis and …

Infrasound From Tornadoes: Theory And Experiment, Bin Liang

Electronic Theses and Dissertations

Previous field experiments support the claim that a tornado can radiate discernible infrasound between 0.5−10 Hz. The physical mechanisms of tornado sound generation are still not fully understood although several potential mechanisms have been proposed. In this dissertation, a new mechanism based on vortex sound theory is examined analytically and numerically. Basically, rotation of the non-axisymmetric vorticity field in tornadoes can produce dominant low-frequency infrasound less than 2.0 Hz. This finding is based on a detailed analysis of calculating infrasound emitted from two numerical models of tornadoes using large eddy simulation (LES), called the baseline model and the eddy injection …

Particle Image Velocimetry Investigation Of A Novel Structure Within A Turbulent Boundary Layer, Tyler Jesse Moore

Electronic Theses and Dissertations

In the provided thesis, turbulent statistics over a novel additive surface structure are studied within a fully-developed turbulent channel flow at ReƬ ≈ 380. Experimental data is gathered in a purpose-built 3D-printed wind channel which allows for 2D Particle Image Velocimetry. The Multi Jet Fusion 3D-printed additive structure, consisting of two side walls and a top wall, is analyzed for its flow control capabilities. Potential desirable flow control outputs include localized flow acceleration, deceleration, and vortex generation. The proposed structure is configurable by manipulating the structure’s height and the angle of attack of the side and top walls. Heights of …

Tennessee's Mississippi: An Audio Documentary, Michelle Bright

Electronic Theses and Dissertations

Tennessee’s Mississippi is a four-episode audio documentary preview of a future podcast in the making. It centers on Tennessee Williams’ Mississippi plays and stories and how they connect to the real cultural history of this state. Williams is known as an international playwright, and while much scholarship has been done on his work, very little has focused on the significance of Mississippi in creating a place identity for his characters for his most successful plays in the first twenty-five years of his career. This place identity is even more apparent when he begins to move away from using Mississippi in …

The Perceived Effects On The Motivation, Anxiety, And Online Language Learning Of Saudi Efl Learners During The Covid-19 Pandemic, Ali Hasan Alamry

Electronic Theses and Dissertations

Although many restrictions initiated by the COVID-19 pandemic are no longer imposed, massive changes across the globe have impacted online language learning afterward. Technology infrastructure, students' and teachers' digital literacy, and proper distance learning pedagogies were among the challenges of online learning during the pandemic. Nevertheless, valuable lessons can be learned from the pandemic to better handle online language learning classes in the future. Globally, increasing attention in the literature has been directed toward the effects of the pandemic on L2 learners' different affective factors. Locally, this study focuses on the perceived impacts on Saudi EFL learners' motivation, anxiety, and …

Exploring The Perspectives Of Black Male Students At An Hbcu In Rural Mississippi And The Role Non-Cognitive Factors Within A First-Year Experience Program Play In Their Continued Enrollment, Billy J. Benson, Jr.

Electronic Theses and Dissertations

Retention and graduation rates are declining nationwide but are exceptionally low for Black men. Extant research substantiates that various influences contribute to a student’s ability to persist to graduation. Apart from the positive impact of HBCUs on educational outcomes for Black students, empirical research highlights that enrollment, campus engagement, retention, success, and graduation are problematic (Palmer et al., 2013). Many factors—academic and non-cognitive—affect a student’s ability to persist to graduation (Bosco, 2021).

This problem of practice (PoP) explores the perspectives of Black male students at an HBCU in rural Mississippi and the role non-cognitive factors within a first-year experience program …

Formulation Design And Development For Extended-Release Drug Delivery System, Sheng Feng

Electronic Theses and Dissertations

The drug delivery system enables the release of the active pharmaceutical ingredient to achieve a desired therapeutic response. Conventional, non-controlled drug delivery systems are unable to deliver the drug at a sustained rate which leads to poor bioavailability, fluctuations in plasma drug concentration, and potential side effects. The extended drug delivery system enables drug delivery at a sustained or predetermined rate to achieve maximum efficacy and safety. Different routes of drug administration, along with various extended-release dosage forms have been extensively developed such as oral delivery, parenteral delivery, transdermal delivery, ocular delivery, and tumor delivery among others. This dissertation developed …

Error And F -Divergence Analysis Of Generative Adversarial Network, Mahmud Hasan

Electronic Theses and Dissertations

In this dissertation, the focus is to investigate the convergence rates of error and estimation bounds of various f-divergence metrics in the context of generative adversarial networks (GANs). The error convergence rate is developed and explained by a class of functions with the discriminator and generator neural networks. The new class of functions is uniformly bounded, VC type, with bounded envelope function and Vapnik–Chervonenkis (VC) dimension dimension which makes it possible to apply Talagrand inequality. A tight convergence rate is derived for the error of GAN after applying the Talagrand inequality and Borel-Cantelli lemma. The error bound is generalized for …

Campus Recreation Student Employee Professional Development Curriculum: Perceived Student Employee Outcomes, Amanda Alpert Jessee

Electronic Theses and Dissertations

Kuh and colleagues (2008) use the term high-impact practices (HIPs) to describe co-curricular programs that are particularly effective in advancing student learning. The original list of HIPs does not include campus employment, which McClellan et al. (2018) argued should be added. According to the results from the 2019 NASPA survey reported by Burnside et al., recreational services is one of the top three areas in the number of student staff members. These student employees tend to come from a diverse academic background (Kampf & Teske, 2013) and may not be pursuing a future career within the recreation field. Campus recreation …

An Applied Research Study On Improving Special Education Identification And Support For Grades 3-6: Assessing The Impact Of The Tier 3 Process, Nickie Malone

Electronic Theses and Dissertations

Addressing the urgent need for effective literacy instruction, especially for students with diverse learning needs, is paramount in today's educational landscape. This dissertation investigates the implementation and impact of the Multi-Tiered System of Supports (MTSS) framework, particularly the Tier 3 process, at AUES in grades 3-6. The study aims to shed light on the systemic gaps in special education identification and support, evolving pedagogical approaches, and the role of educators and institutions in shaping literacy outcomes.

Grounded in the principles of equity and inclusion, the MTSS framework emerges as a promising avenue for providing personalized support and instruction tailored to …

Listening To Black Holes Ring: High-Precision Ringdown Modelling, Lorena Magaña Zertuche

Electronic Theses and Dissertations

After decades of promise, gravitational waves from a binary black hole system were detected on September 14, 2015 by the Laser Interferometer Gravitational-Wave Observatory (LIGO). Since then, close to 100 new gravitational-wave detections, including those from neutron star and neutron star-black hole binaries, have been made jointly by the LIGO, Virgo, and KAGRA (LVK) collaboration. LIGO's fourth observing run (O4) has begun, and signals on the order of one per week are expected. This rate will only increase as third-generation ground-based detectors will be getting hundreds of thousands of gravitational-wave signals when they go online in the next decade. Moreover, …

Efficient Design Of Neural Network Hardware Accelerator For Enhanced Performance In Deep Learning Systems, Tamador Nadem Mohaidat

Electronic Theses and Dissertations

Artificial intelligence (AI) hardware accelerator is an emerging research for several applications and domains. The hardware accelerator aims to provide high computational speed while retaining low cost and high learning performance. The main challenge is to design complex machine learning models on hardware with high performance. In this thesis, the aim is to develop the hardware implementation of perceptron within a neural network. Innovative hardware-based approaches are explored to optimize perceptron networks, enhancing accuracy, reliability, and fault tolerance while minimizing resource requirements and power consumption.

A thorough investigation into machine learning accelerators and associated challenges was initially conducted. The hardware …

Optimizing The Performance Of Polyimide And Polyetherimide Nanocomposites Against Atomic Oxygen Attack And/Or Hypervelocity Impact, Grace Rushing

Electronic Theses and Dissertations

As humanity continues to push the boundaries of exploration beyond Earth, the need to develop materials that can withstand this harsh environment increases. Two types of materials were exposed to the low earth orbit (LEO) space environment on the International Space Station (ISS) for one year: (1) polyimide composites enhanced with polyhedral oligomeric silsequioxane (POSS) and (2) polyetherimide-graphene nanoplatelet (PEI-GNP) composites. Both exposed and non-exposed samples were characterized and compared, and the mass loss was calculated. The effects of the LEO environment, particularly atomic oxygen (AO), were investigated. X-Ray Photoelectron Spectroscopy (XPS), Fourier Transform Infrared Spectroscopy (FTIR), and digital microscopy …

Development Of Quercetin And Moxifloxacin Combination In-Situ Nanoemulgels For Wound Healing., Shravani Padhye

Electronic Theses and Dissertations

The study aimed to develop an in-situ gel that could potentially be sprayed on the skin for faster and enhanced wound healing. Quercetin (QCT) is a bioflavonoid, which has potent anti-inflammatory properties and has shown enhanced wound closure along with good antimicrobial activity, particularly against Staphylococcus aureus (S. aureus) and Pseudomonas aeruginosa (P. aeruginosa) which typically infect a wound. Moxifloxacin Hydrochloride (MOX) is a broad-spectrum antibiotic that has topically shown activity against Methicillin Resistant S. aureus (MRSA) and, in combination with Quercetin, could provide better and quicker wound healing as compared to the current treatment available. QCT and MOX nanoemulsions …

The Relationship Between Sport Club Participation And Academic Success In Undergraduate Students At The University Of Mississippi, Gabrielle Sokol

Electronic Theses and Dissertations

Degree attainment is a shared goal of college students, higher education institutions, and the larger society, as graduates have lower rates of unemployment, higher rates of civic engagement, pay higher taxes, and are able to better prepare future generations for academic success as compared to their counterparts (Museus et al., 2008). Additionally, institutions with higher retention rates have the chance to increase their reputation and may be presented as more prestigious to potential students and their families (Hagedorn, 2005).

Despite the clear incentives for all parties, every year many students, including those at the University of Mississippi, choose to leave …

Exploring A Link Between Expected Family Contribution And Continued Enrollment At Holmes Community College, Matthew Ryan Surrell

Electronic Theses and Dissertations

The challenges facing higher education institutions across this country continue to increase, becoming more and more complex with each passing semester. Higher education administrators and those who aspire to be such must constantly stay abreast of all potential adverse issues, but especially those that affect the educational success of our students. The importance of student success is invaluable to students and society, alike, as their educational achievements enable the growth of both social efficiency and social mobility. Therefore, higher education institutions and their administrations must constantly assess and attempt to mitigate the many challenges and barriers to these important accomplishments. …

Heterologous Expression, Isolation, And Metabolomic Profiling Of Myxobacteria To Explore Their Potential In Natural Product Biosynthesis, Nawal Mohamed Hamed Elsayed Shehata

Electronic Theses and Dissertations

Myxobacteria are distinguished by their ability to produce a spectrum of natural products,positioning them as an active resource for therapeutic discovery. These products include metabolites with significant antibacterial, antifungal, cytotoxic, antiviral, and immunosuppressive properties. Current synthetic biology tools for the exploration of myxobacteria are not as advanced as those for the well-studied Streptomyces. This thesis presents an evolution of synthetic biology techniques specifically designed for the exploitation of myxobacteria in the realm of natural product discovery. Chapter One investigates the potential of myxobacteria to act as heterologous hosts due to their large genomes and their capacity for diverse biosynthetic processes. …

An Argument Against Positivist Separability, Nichalus Zoltan Vali

Electronic Theses and Dissertations

One of the most influential views associated with legal positivism is that of the separability thesis. Primarily associated with H.L.A Hart, this thesis is widely understood to be the view that there is no necessary connection between law and morality. However, John Gardner takes this to be a naïve interpretation of separability that fails to adequately characterize legal positivism and which Hart himself did not endorse. Instead, Hart and other legal positivists were committed to the view that whether a norm is legally valid depends on its sources (i.e., social facts such as official engagement with the norm) and not …

Atomistic Simulation Of Pfas And Graphene: Interactions For Water Applications, Bashar Moufeed Awawdeh

Electronic Theses and Dissertations

The contamination of drinking water by per- and polyfluorinated alkyl substances (PFAS) is a global issue. PFAS have been widely utilized in a variety of applications, including water and stain-resistant coatings, fire suppression foams, cosmetics, paints, and adhesives. They have been detected in soils and rivers globally due to their widespread use and resistance to degradation. The strong C–F bonds of PFAS make them exceedingly stable and hard to remove. In order to remediate PFAS contamination in the environment, it is essential to develop selective adsorbent materials that can effectively capture a wide range of PFAS structures. On April 10, …