Digital Commons Network^™

Tanzanian Cyberscape: Exploring Language Preference Patterns Among Instagram Users, Carolyne Saria Ulomy

Electronic Theses and Dissertations

Virtual platforms such as Instagram are not only characterized by massive collaboration, sharing, and access to information but also by multilingual exchanges. For example, Tanzanian social media users choose to disseminate or publish information online using different languages present in their linguistic repertoires. This study explores multilingualism in social media (Instagram) within the Tanzanian context, as well as address the statuses of Swahili, English, Swanglish/Kiswanglish, Community Languages (CLs) and Foreign Languages (FLs) on social media. Specifically, the research investigated two overarching questions: What are the factors influencing language choices among Tanzanian Instagram users? and is there an association between content …

Application Of Direct Powder Extrusion 3d Printing Technology In Printing Multi-Layer Structure Tablets, Honghe Wang

Electronic Theses and Dissertations

Three-dimensional printing (3DP) is a widely used technique to manufacture drug delivery systems due to its precision, efficiency, and tailored prescription capability. Although fused deposition modeling (FDM) is the most commonly used technique in the pharmaceutical sciences, there are several limitations. Direct powder extrusion (DPE) 3D printing is a novel technique that was improved from traditional FDM. Material powder blends are fed into the cartridges of the 3D printer directly, without filament manufacturing, avoiding investigation and modification of filament property improvement. Chapter 1 introduces the fabrication of core-shell geometries for controlled-release tablets using direct powder extrusion 3D printing, demonstrating the …

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, …

Cationic Charge-Shifting Polymers As Improved Vectors For Nucleic Acid Delivery, Alexander Fortenberry

Electronic Theses and Dissertations

This work investigates the development and application of charge-shifting polycations for gene delivery, focusing on their synthesis, characterization, and applications for in vitro mRNA delivery. Utilizing poly(2-vinyl-4,4-dimethylazlactone) (PVDMA), this study explores modifications with various reactive handles, such as alcohol, thiol, and amine groups, to create cationic amide-, ester-, and thioester-functionalized polycations. These modifications aim to exploit the charge-shifting capabilities of the polycations to form stable polyplexes with nucleic acids, promoting the efficient intracellular release of the genetic cargo.Initial studies first examine the charge-shifting properties of PVDMA-based polycations under different pH and temperature conditions. This work highlights the potential of these …

Mindfulness And Mathematics: The Relationship Between A Mindful Teacher And Mathematics Intervention, Ave Mayeux

Electronic Theses and Dissertations

Adolescents in American classrooms are currently required to fulfill multiple roles, making them particularly vulnerable to stress due to intense academic demands and social pressures. This stress can be particularly challenging for adolescents who struggle with stress, anxiety, depression, and/or self-regulation. Previous research indicates a positive correlation between mindfulness practices and reduced anxiety, improved social skills and interactions, enhanced academic performance, and better self-perception. This self-study explored the implementation of mindfulness exercises in a mathematics intervention classroom by adapting and creating appropriate resources, and facilitating mindfulness exercises suitable for adolescent students. Data in this self-inquiry study was generated through meticulous …

Acoustic Localization In Reverberant Environment, Xing Yang

Electronic Theses and Dissertations

The main goal of this dissertation is to develop algorithms to accurately locate and detect underwater oil leakages through sounds emitted by oil-induced bubbles recorded by passive hydrophones. These algorithms aim to create an early warning system to prevent or identify catastrophic oil spills from pipelines, wellheads, and seafloor seepage.

The Higher Ed Forgotten: Experiences And Perceptions Of Face-To-Face Bipoc Administrators During The Covid-19 Pandemic, Dana Evans

Electronic Theses and Dissertations

This qualitative study explores the experiences of academic administrators during the COVID-19 pandemic, focusing on the impact of institutional racism on their professional lives. The study specifically investigates the challenges faced by administrators from diverse racial backgrounds in navigating institutional responses to the crisis. The research aims to develop a comprehensive plan that can be implemented at the local level in educational institutions and subsequently modeled and implemented nationally, a plan that can uphold sustainable structures, processes, and best practices for administrators during crises.

Formulation Development Of Cannabidiol Using Various Technologies As An Approach To Enhance Its Solubility And Oral Bioavailability, Iman Taha

Electronic Theses and Dissertations

Cannabidiol (CBD) is a crystalline compound extracted from a high-CBD variety of the Cannabis sativa plant. It has various pharmacological effects, including antipsychotic, anti-inflammatory, anti-seizure, and anxiolytic properties. However, developing CBD formulations presents several challenges due to its high lipophilicity (log P of 6.3), poor water solubility (0.1 μg/mL), and significant first-pass metabolism, which results in low oral bioavailability, estimated at just 6%. Furthermore, research has demonstrated that CBD is susceptible to degradation from exposure to light, temperature, and oxidation during formulation. Currently, Epidiolex is the only commercially available preparation containing CBD that has been approved by the US-FDA for …

Formulation And Characterization Of Quetiapine Fumarate Floating Bioadhesive Tablets, Ajay Reddy Kolipaka

Electronic Theses and Dissertations

Quetiapine fumarate (QF) is an antipsychotic drug, and it has a plasma half-life of 6 hours. The chemical structure of QF has nitrogen groups making it highly soluble in acidic pH and slightly soluble in alkaline pH. This study aimed to develop the QF gastroretentive tablets by TSMG technology comprising floating and mucoadhesive approach by using different viscosity grades of HPMC to improve absorption by prolonging its gastric residence time. The floating tablets were prepared using the Twin screw melt granulation (TSMG) technology, and the impact of polymer concentration and viscosity grades of HPMC on the floating ability and drug …

Bacterial Metallophores As Potential Agents In Heavy Metal Bioremediation, Mohammed Ahmed

Electronic Theses and Dissertations

Heavy metal pollution is a significant threat to human health and the environment. Bacteria have evolved diverse mechanisms to adapt to these pollutants, including the secretion of small molecules called metallophores. Bacterial metallophores are metabolites excreted in response to toxic metal stress to protect the bacterial cell. These small molecules have shown versatility in potential applications for the remediation of heavy metals. This research focuses on constructing a library of bacterial metallophores, which will facilitate the assessment of their metal-binding properties when exposed to different metals. The study has two main areas of investigation: Firstly, it involves isolating and characterizing …

Language Variation: Arabic Dialects In Madinah, Saudi Arabia, Arwa Alsindy

Electronic Theses and Dissertations

Arabic sociolinguistics, namely Arabic dialectology, is a demanding area of study. Therefore, the current research was conducted to fulfill some of those needs. Qualitative methods were applied in order to answer the research questions: What are the salient linguistic features of the Hijazi Hadari dialect, Urban Bedouins Hijazi dialect, and the emerging Saudi Arabic White dialect in Madinah? When are these dialects used? What changes or accommodations are made to these dialects when communicating with the other social groups? To provide answers to those questions, observations and interviews were applied. By applying the SPEAKING model (Hymes, 1974), six participants (three …

Formulation And Characterization Of Clotrimazole Buccal Films Using Hot Melt Extrusion, Harish Kandhuri

Electronic Theses and Dissertations

Clotrimazole is a broad-spectrum antifungal /antimycotic, it is used topically in the treatment of oropharyngeal candidiasis. The oral route is the most preferred route of administration 60% of the conventional dosage forms are available as tablets and capsules. The main objective of the study was to develop and Formulate Clotrimazole oral film to get local effect for treating oropharyngeal candidiasis. Oral films are thin flexible strips which can be placed on the tongue, where it adheres to the surface of the tongue and dissolves releasing the drug into the oral cavity. Here, the films are formulated using hot melt extrusion …

Motivation And Attitudes Toward Learning English As A Foreign Language: A Case Study Of Urban And Rural University Freshmen In Saudi Arabia, Munif Almasarir

Electronic Theses and Dissertations

The Saudi educational system faces several challenges that contribute to low proficiency in English among Saudi students. Previous studies have focused on the EFL curriculum and pedagogical challenges, but there is a lack of research specifically examining other main psychosocial factors that contribute to the attainment of English proficiency. Motivational and attitudinal factors have been proven to have an impact on the proficiency level among EFL students. My study investigates the perceived influence of geographical location on students' attitudes and motivation toward English as a global language in Saudi Arabia. By utilizing an ethnographic approach focusing on both rural and …

Godspeed: American Evangelicals And The Space Race, Kari Edwards

Electronic Theses and Dissertations

When the Space Race between the United States and the Soviet Union erupted in 1957 with the launch of the Sputnik 1 satellite by the Soviets, Americans were forced to face a disturbing new reality: the world had changed, humanity had reached into space, and the United States had not been the first nation to accomplish such a feat. In a Cold War climate dominated by religious concepts of good versus evil, American evangelicals approached the birth of space exploration with some reluctance, unsure whether such magnificent feats were truly blessed by God and struggling to come to terms with …

The Effects Of Technology-Enhanced Learning On Radiologic Sciences Student Engagement, Zack Gray

Electronic Theses and Dissertations

This dissertation investigates the multifaceted connection between technology-enhanced learning (TEL) and student engagement, with a specific emphasis on student perceptions, attitudes, and distractions associated with technology usage in the classroom. Recognizing the increasing prevalence of technology in educational settings, this study seeks to understand how students perceive technology in the learning environment and how these perceptions influence their attitudes toward its use. The research framework is anchored in the Theory of Planned Behavior (TPB), providing a theoretical lens to assess the cognitive factors influencing student behavior.The study employs a mixed-methods approach, combining surveys and observations to gather comprehensive insights into …

Enhancing Flex Student Success: Factors Influencing Achievement In The Istudy Program At The University Of Mississippi, Jennifer Jewel Sanford

Electronic Theses and Dissertations

Higher education institutions have recently increased the number of online courses offered to students. A need exists to understand student success within asynchronous self-paced online education programs. This study explores the factors that impact student success in the Independent Study Program (iStudy) at the University of Mississippi, focusing specifically on Flex (Full-Year) enrolled students. Student success is defined as achieving a completion grade of "C" or higher. The proposed study utilizes a mixed-methods approach, combining quantitative analysis of student performance data with qualitative feedback from student performance data and exit surveys. The assessment aims to provide a comprehensive understanding of …

Influence Of Reduced Salt In Fully Cooked Ham And Sausage Cured With Natural Celery Powder On The Growth Of Listeria Monocytogenes At 4⁰C, Anne Sherod

Electronic Theses and Dissertations

This research evaluated the influence of reducing salt on outgrowth of L. monocytogenes on ready to eat (RTE) deli-style sliced ham cured with natural celery powder, fully cooked sausage links cured with traditional sodium nitrite and sausage links cured with natural celery powder, vacuum packaged and stored at 4⁰C on the outgrowth of L. monocytogenes. Experiment 1 evaluated L. monocytogenes outgrowth on ham over 153 days on the following treatments, current retail ham (HC) 2.0% salt; reduced salt 1 (HRS1) 1.5% salt; reduced salt 2 (HSR2) 1.35% salt; and reduced salt 2 without antimicrobials (HRS2WA) 1.35% salt without potassium lactate …

Optimizing Large Language Models And Multimodal Approaches For Biomedical Publication And Satellite Imagery, Youngsun Jang

Electronic Theses and Dissertations

This dissertation comprises two main sections: the first focuses on natural language processing (NLP) for extracting key information from scientific literature using large language models (LLMs), and the second addresses remote sensing for detecting natural disasters, such as floods, from satellite imagery using a multimodal approach. The first section investigates methods to enhance Transformer-based models in classifying and extracting information from biomedical scientific publications. Key contributions include the development of a custom dataset for classification and Question and Answering (Q&A) tasks, fine-tuning Transformer models like the Bidirectional Encoder Representations from Transformers (BERT) and addressing multi-span answer issues with the TAg-based …

Application Of Hot-Melt Extrusion Technology For The Preparation Of Carbamazepine Extended-Release Tablets, Chamundeswara Srinivasa Akash Kalla

Electronic Theses and Dissertations

Carbamazepine (CBZ) is an anti-convulsant and specific analgesic for trigeminal neuralgia that reduces polysynaptic responses and blocks post titanic potentiation. Moreover, CBZ is effective in partial and generalized convulsions and mixed types. It is not effective in petit mal seizures. Carbamazepine extended-release tablets are used to treat episodes of mania (or) mixed episodes i.e., symptoms of mania and depression that happen at the same time, in patients with bipolar disorder. The present study was designed to develop CBZ extended-release tablets with acrylic acid-based polymer (Eudragit® RL PO) using a melt granulation and to match the USP dissolution test specification. Thermal …

Title Character: A Novel, Di Bei

Electronic Theses and Dissertations

Inspired by true events, Title Character: A Novel tells the intimate and fraught relationships of Asian female artists during a pandemic in Idaho: Jade, a rebellious girl born amid the one-child policy in Beijing, writes her love story into a script; Pearl, an ambitious actress raised in rural China, stars in Jade’s film and dates the method actor who plays her lover. Strung together by one film, young women of the Asian diaspora mirror and maneuver each other, while playing out their performances of self with art as their arena.

The Role Of L1 Dialect Phonotactics On The Production Of L2 English Phonotactics By Saudi Efl Learners, Abdullah Ahmad Balbaid

Electronic Theses and Dissertations

This study investigates the phonological challenges and adaptive strategies employed by 30 first-year university students majoring in English from three distinct Saudi Arabian dialect backgrounds—Najdi, Hijazi, and Hasawi—in perceiving and producing English onset biconsonant and triconsonant clusters. Exploring dialectal variations, the research aims to understand how these phonological characteristics influence the acquisition and intelligibility of English pronunciation among Saudi learners. Utilizing a combination of perception tasks through ABX discrimination tasks and production tasks inspired by the Labovian model, the study provides insights into the dialect-specific phonological challenges faced by the participants.

Key findings reveal that Najdi speakers demonstrate higher proficiency …

Mississippi's America: Late Southern Writing On National Themes, Jacob Fennell

Electronic Theses and Dissertations

This project examines three texts each from three Mississippi authors working today: Kiese Laymon, Jesmyn Ward, and Mary Miller. These authors’ literary constructions of their home state and the South as a whole serve as critical, political frames for the United States. As a result, their work is well-served by the questions and methodology of New Southern Studies, a field actively invested in conceptions of the U.S. South as nonexceptional and lodged within greater geopolitical contexts. Indeed, the original call for New Southern Studies from Houston A. Baker, Jr. and Dana Nelson speaks to a problem of a false national …

Development Of Fenofibrate Solid Dispersion Via Hot Melt Extrusion And 3d Printing Technologies, Janhavi Santosh Deshmukh

Electronic Theses and Dissertations

The aim of this study was to develop an amorphous solid dispersion (ASD) of fenofibrate using Hot Melt Extrusion (HME) and 3D printing. By using HME, 3D printable filaments were prepared. Fenofibrate (10% w/w), Soluplus®, and Polyethylene oxide-N80 were used to prepare the HME filaments. The filaments were divided into two parts, the first part was used as a feedstock for the Fused disposition modeling 3D printing (FDM 3D printing) to print fenofibrate tablets with different percent infill densities, 90%, 70% and 50%. The second part was milled and filled into gelatin capsules to compare the dissolution release profile of …

Exploring The Habits And Perceptions Of True Crime Podcast Listeners, Remy Heinen

Electronic Theses and Dissertations

Although podcasts as a whole are growing in popularity, the true crime genre of podcasts continues to be especially popular, particularly with female listeners. The unique intersection of informational and entertainment goals associated with true crime podcasts raises ethical questions about how these priorities should be balanced. This study focused on learning more about listeners’ motivations, habits, and perceptions via an online survey. Additionally, it explored the gendered nature of true crime podcast consumption. A total of N = 657 participants completed the survey providing information about why they listen to true crime podcasts, how often they listen, and how …

On Inference-Time Adversaries In Object Detection Models, Soumil Datta

Electronic Theses and Dissertations

With the increasing use of AI in various applications, its ability to impact different communities is a crucial aspect to the advancement of humanity and technology. However, with its often unexplained properties, AI models could wreck havoc if loopholes are found. Adversarial attack algorithms have been shown to cause deep neural networks to fail on image classification and object detection tasks while being visually imperceptible to humans. Adversarial attacks cause out of distribution predictions and can cause the model to fail in unexpected ways.

Formulation Development And Characterization Of Isoniazid-Pyridoxine Combination Gummies Using An Extrusion-Based 3d Printer, Aditi Rajendra Holkunde

Electronic Theses and Dissertations

This study aimed to formulate and evaluate Isoniazid-Pyridoxine-loaded gummies for use in a population ranging from pediatric to geriatric and to study the applicability of BIO X 3D printer in printing gummy formulations. Semisolid extrusion (SSE) 3D printing is an emerging technology in personalized medicine. To address clinical multi-dose requirements, SSE has been explored to manufacture new preparations. In this study, Isoniazid (INH) and Pyridoxine Hydrochloride (PDX) were used to make gummy formulations for use in the treatment of Tuberculosis. A suitable semisolid mixture for SSE was prepared and incorporated into the BIO X 3D printer for extrusion-based 3D printing …

Mapping In/Exclusion: Queer Identity In Oxford, Mississippi, Julia Kraus

Electronic Theses and Dissertations

This thesis employs a mixed methods approach to investigate LGBTQ communities in Oxford, Mississippi, within the unique context of the Bible Belt panopticon. Through an examination of the Unitarian Universalist Congregation of Oxford (UUCO) and Oxford Pride, the study delves into the themes of visibility and surveillance, resistance and subversion, community and identity, and institutional interactions and impacts. The research is grounded in seven original interviews with UUCO members, providing nuanced insights into the functioning of LGBTQ communities within a conservative environment. Additionally, the creation of a podcast episode titled “Queering Oxford: the Long Path to Pride” offers an innovative …

Magnolia State Of Mind: Memory And Memorialisation In Mississippi, Cosmo Mcgee

Electronic Theses and Dissertations

This thesis explores the ways Mississippi has historically and contemporaneously crafted its collective memory through symbolism. Confederate memorial groups endeavoured to create a “Lost Cause” memory of the state’s Antebellum past, validating its White supremacist systems into the 1960s. With the violence of the Civil Rights era failing to stop integration, Mississippians would spend the next sixty years debating the best ways to represent the state’s history.

This work looks at three distinct manifestations of Mississippi’s memorial culture: the discussions around and changes to the state flag, the cultural and sporting atmosphere of the University of Mississippi (“Ole Miss”), and …

Evaluation Of Process Parameters For Continuous Manufacturing Of Quetiapine Fumarate Immediate Release Tablets Using Twin Screw Wet Granulation, Tejaswini Naguboyina

Electronic Theses and Dissertations

Granulation is one of the important unit operations in the manufacturing of solid dosage forms like tablets and capsules that regulate the quality of end products. It is a process of particle enlargement by agglomeration technique, which improves flow properties, compressibility, reduction of dust formation, drug content uniformity, dissolution rates, and overall product stability. Traditionally, it has been a batch process due to a better understanding. However, there has been a shift towards continuous manufacturing using a Twin-screw granulator, which is more robust, scalable, and versatile for various applications. This work presents the use of Twin screw wet granulation (TSWG) …

Spins And Kicks: An Analysis Of Dynamical Properties Of Compact Binaries Using Gravitational Waves, Sumeet Kulkarni

Electronic Theses and Dissertations

The detection of over 90 compact object mergers involving black holes and neutron stars as gravitational wave events by the Advanced LIGO and Advanced Virgo detectors over the course of three observing runs has ushered in the new era of gravitational wave astrophysics. Within a decade, we have transitioned from a detection to the population era, with a combined catalog of these events making it possible to study the population properties of compact objects, estimate their local merger rate, and provide clues as to how they can form binaries. This dissertation focuses on two particular displays of the dynamical dance …