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Applications Of Predictive And Generative Ai Algorithms: Regression Modeling, Customized Large Language Models, And Text-To-Image Generative Diffusion Models, Suhaima Jamal

College of Graduate Studies: Theses & Dissertations

The integration of Machine Learning (ML) and Artificial Intelligence (AI) algorithms has radically changed predictive modeling and classification tasks, enhancing a multitude of domains with unprecedented analytical capabilities. Predictive modeling leverages ML and AI to forecast future trends or behaviors based on historical data, while classification tasks categorize data into distinct classes, from email filtering to medical diagnosis. Concurrently, text-to-image generation has emerged as a transformative potential, allowing visual content creation directly from textual descriptions. These advancements are pivotal in design, art, entertainment, and visual communication, as well as enhancing creativity and productivity. This work explores three significant studies in …

Numerical Analysis Of A Multi-Stage Elastohydrodynamic Seal For Aircraft Engines, Md Wasif Hasan

College of Graduate Studies: Theses & Dissertations

At present, both governmental and private aviation enterprises are trying to develop aircraft that are swifter, more lightweight, and more cost-effective in order to maintain competitiveness on both the domestic and global stage. Continuous innovation and sustainability efforts are necessary to achieve advancements in aviation systems, such as fans, compressors, combustors, and turbines, as well as sub-systems, like engine seals. Advanced engine seals exhibit considerable potential in enhancing the engine's pressure ratio and cycle temperatures, leading to reduced engine weight, increased thrust, and improved fuel economy. In this study, a novel multistage seal idea has been proposed for the supercritical …

Carbon Dioxide Gasification Of Biochar: A Study On Utilizing Captured Co2 To Mitigate Greenhouse Gas Emission And Improving Carbon Conversion Efficiency, Nnamdi Ofuani

College of Graduate Studies: Theses & Dissertations

With rapidly growing global economies and world population, fossil fuel continues to play a major role in meeting current energy demands. Carbon capture and storage (CCS) technologies have, hence, been implemented to reduce CO₂ emissions in the atmosphere. With the implementation of CCS technologies comes the need to utilize the captured CO₂. This research, therefore, proposes CO₂ gasification of biochar as a viable carbon utilization pathway. With captured CO₂ coming at various concentrations, there is a need to understand how CO₂ concentration affects biochar conversion to useful products. This study, therefore, evaluates the effects …

A Novel Magnetorheological Pump Concept For Insulin Delivery, Mohammad Towhidul Islam Rimon

College of Graduate Studies: Theses & Dissertations

Over the past 25 years, awareness of type 1 diabetes has significantly increased, leading to a comprehensive understanding of various aspects, including its genetics, epidemiology, and disease burden. According to the Type 1 Diabetic Index, about 8.7 million people around the world live with this long-term autoimmune disease characterized by insulin deficiency and resultant hyperglycemia. However, the increased availability and utilization of artificial pancreas systems could potentially save 673,000 lives by 2040. Although, the advancement of diabetes technology offers Type 1 diabetic patients more tools to enhance glycemic management and achieve effective outcomes, many patients are still hesitant to adopt …

Railroad Condition Monitoring Using Distributed Acoustic Sensing And Deep Learning Techniques, Md Arifur Rahman

College of Graduate Studies: Theses & Dissertations

Proper condition monitoring has been a major issue among railroad administrations since it might cause catastrophic dilemmas that lead to fatalities or damage to the infrastructure. Although various aspects of train safety have been conducted by scholars, in-motion monitoring detection of defect occurrence, cause, and severity is still a big concern. Hence extensive studies are still required to enhance the accuracy of inspection methods for railroad condition monitoring (CM). Distributed acoustic sensing (DAS) has been recognized as a promising method because of its sensing capabilities over long distances and for massive structures. As DAS produces large datasets, algorithms for precise …

Neo Retro: Rapid Prototyping And The Evolving Role Of Artistic Practice, Robert D. Miller

College of Graduate Studies: Theses & Dissertations

My art is always executed with a timeline in mind. I am influenced by a world as it exists in the distance past, the recent past, the present (with all its multifaceted complexities), and the near future (as it applies to my legacy after I'm gone), as well as the distance future. Time and space – to me - are all part of a grand narrative. The art that I create is an indexical gesture of my creative processes and these creative processes are reflected in the imagery that I create as well as the materials I use for my …

Cross-Layer Performance Evaluation Of C-V2x, Dhruba Sunuwar

College of Graduate Studies: Theses & Dissertations

The evolution of connected vehicles from a distant futuristic concept to an integral part of daily life is indisputable. Vehicle-to-everything communication (V2X) serves as the cornerstone of this transformation, facilitating seamless interaction among vehicles, infrastructure, pedestrians, and networks. However, evaluating V2X system performance proves intricate due to the dynamic nature of vehicles influenced by mobility factors. To address this complexity, we have developed a specialized system-level simulator expressly for evaluating V2X communication performance. Notably, the simulator encompasses (i) intelligent transportation system (ITS) scenarios integrated into a geographical framework and (ii) the capability to assess cross-layer performance spanning physical (PHY) and …

Feasibility Of Pile Driving Analyzer For Pile On Rock, Tanvir Ahmed

College of Graduate Studies: Theses & Dissertations

The purpose of the field verification of piles is to check whether piles can withstand design load. Two commonly used methods are high strain dynamic piles and static load testing. Static load testing is very time-consuming, requires heavy deadloads and much space, and doesn’t have stress monitoring advantages in piles. High strain dynamic has been employed as an alternative in this regard. Pile dynamic analyzer (PDA) is a device which is used during dynamic testing to analyze the measurements from the test. PDA calculates the geotechnical or structural resistance by using wave mechanics algorithm installed in it. Total driving resistance …

Self-Supervised Contrastive Learning Using Eeg Signals For Mental Stress Assessment, Ugochukwu Uraechu

College of Graduate Studies: Theses & Dissertations

A study is presented to investigate self-supervised contrastive learning (SSCL) models using physiological data obtained from non-invasive wearable sensors for mental stress assessment. The present work involved acquisition of electroencephalography (EEG) signals using wearable sensors, signal preprocessing, data augmentation, and investigation of self-supervised contrastive learning (SSCL) algorithms for multi-class mental stress assessment. Seven volunteers participated in this study executing various mental tasks while wearing an OpenBCI head cap to acquire EEG signals. The acquired EEG signals were preprocessed and utilized for data augmentation in time and frequency domains with different SSCL models. Optimal data augmentation combinations and SSCL models were …

Accounting For Variability Due To Resampling Using Bootstrapping, Dipendra Phuyal

College of Graduate Studies: Theses & Dissertations

Bradley Efron (1979) introduced bootrapping. Typically a researcher is interested in studying a process which generates individuals. The collection of individuals the process has(actual) or could have (conceptual) generated is the population. The collection of conceptual members of the population is an uncountable collection. Hence, the population is anuncountable collection of individuals. The collection of individuals the process has generated (actual individuals) is representative of what the process can generate and will bereferred to as the representative sample. The size of this sample is a nonnegative integervalued random variable N which may be a constant random variable such as in …

Machine Learning Based Three-Limb Core-Type Transformer Core Aspect Ratios Identification, Ananta Bijoy Bhadra

College of Graduate Studies: Theses & Dissertations

Power transformers are considered one of the key elements of electric grids. Transient studies include transformer transient analysis which is required for the continuous power supply. However, to perform the transient analysis, the details of the internal structure of the transformer are required which are unobtainable and considered as confidential information. Therefore, the application of topological-based transformer models is limited although the models can accurately represent the transformers. To address this concern, a novel approach utilizing Machine Learning (ML) to identify the core aspect ratios of the three-limb core-type transformer is introduced. The proposed approach, using only the voltage and …

Investigations Of Performance And Emissions Of A Fischer-Tropsch Gtl Sustainable Aerospace Fuel With Lubricity Improver In A Compression Ignition Engine With Butanol Port Fuel Injection, James B. Willis

College of Graduate Studies: Theses & Dissertations

As there is increasing concern over emissions of traditional fossil fuels, as well as the future of continued reliance on this dwindling resource, it is becoming increasingly evident that alternative fuels are a necessity. This research investigates the use of a Fischer-Tropsch fuel from natural gas feedstocks, S8, in an internal combustion research engine with a common rail fuel injection system. This synthetic kerosene fuel has a high DCN of 62, indicating high affinity to autoignition compared to conventional pump diesel (ULSD) at 48 DCN. However, due to the process by which it is produced, this fuel lacks the necessary …

Experimentatal And Numerical Investigation Of Turbojet Engine Performance, Emissions, And Noise/Vibrations Using Jet-A And F24 Fuel, John W. Mcafee Jr

College of Graduate Studies: Theses & Dissertations

Drastic improvement in cost effectiveness of high-power computing resources has generated a great interest numerical simulation to reduce the overhead cost of engine manufacturing, maintenance, and environmental concerns of engine testing. To accomplish this goal, this research presents the differences between military F24 fuel and commercial aviation fuel Jet-A from a thermochemical and engine performance perspective. This experimental data was used to create and validate a numerical model of the engine used in the experiments fueled with both Jet-A and F24 fuels. The experimental data was collected using a research based single stage turbojet engine outfitted with many sensors for …

Footwear Selection, Foot Type, And Running Biomechanics Of Male Distance Runners With Previous Running Related Injury: A Case Series, Diego Castro I. Diaz

College of Graduate Studies: Theses & Dissertations

With the rise in popularity of running, running shoe companies have researched and designed several models aimed at the purpose of providing comfort and aiding in the decrease of running related injuries. Technology was developed for running shoes to control forefoot and rearfoot impact forces and rearfoot motion during running. However, there is no overwhelming evidence supporting the notion that footwear corresponding to foot type leads to a decrease in running injuries. Thus, the purpose of this study was to describe footwear selection, foot type, and running biomechanics in previously injured male distance runners. Six total participants completed this case …

Impact Of Operational Conditions On The Transient Thermal Behavior Of Lithium-Ion Batteries, Jairo Sebastian Casa

College of Graduate Studies: Theses & Dissertations

Considering the high increase of lithium-ion batteries (LIBs) through the years, it is important to analyze the impact of the operational conditions, such as charging and discharging on the transient thermal behavior of LIBs for thermal management of Li-Ion batteries. A pseudo two-dimensional mathematical model based on the finite volume method (Doyle-Fuller Newman) available in an open-source environment such as Python, was utilized for the electrochemical evaluation of the Li-Ion battery. For simplicity, a lumped thermal model was integrated with the electrochemistry model to evaluate the transient behavior of Li-Ion cells under varying conditions. Both the electrochemistry and lumped thermal …

Stability Analysis Of Vertical Industrial Pressure Vessel Resting On Load Cells Subjected To A Seismic Load., Kameron W. Nez

College of Graduate Studies: Theses & Dissertations

Instability of structures, such as large vertical pressure vessels, is always an issue under the seismic load. In this current work, the acceleration that causes instability for a vertical pressure vessel has been determined experimentally using scaled models. This instability is caused by the tipping of the tall structure that is not completely fixed to the ground. This method is applied for three different sizes of pressure vessels, representing 50 CuFt to 1100 CuFt full scale models. These experimental results are compared with theoretical models. Using dimensional analysis, the accelerations that will cause the instability in the actual full-size models …

Numerical Modeling Of Thermal Runaway In Lithium-Ion Batteries Using Decomposition Kinetics And Inter-Cell Contact Resistance, Shehzad Khan

College of Graduate Studies: Theses & Dissertations

Lithium-ion batteries (LIBs) are central in numerous high-demand applications due to their high energy density and prolonged cycle life. Despite these advantages, their susceptibility to thermal runaway (TR) poses a significant safety risk, with the potential for catastrophic failures. This study focuses on the thermal behavior of prismatic lithium-ion cells, using a finite volume-based partial differential equation (PDE) solver developed in MATLAB and JULIA to model TR behavior. This solver accurately simulates transient behaviors, convection, diffusion, and source terms across various coordinate systems. By engaging in a series of increasing complex case studies, this research aims to identify the critical …

Inside Out: The Effects Of Water Quality And Stocking Density On Oyster Aquaculture In Georgia, Alexandra B. Raduege

College of Graduate Studies: Theses & Dissertations

Oyster growing is one of the oldest known forms of aquaculture, but this ancient practice has only recently entered Georgia’s waters on a commercial scale. With any burgeoning industry, many questions need to be answered to maximize productivity. In the case of oyster aquaculture, growers must maximize both economic and ecological productivity for the long-term success of the industry. Water quality is of particular concern for the health and wellbeing of cultured oysters with the possibility that certain husbandry decisions made by oyster growers could adversely affect the growth and condition of their oysters. This study examines the influence of …

Experimental Investigation Of Liquid Metal Embrittlement In Hot-Dip Galvanized Structural Steel, Amelia Mcnamee

College of Graduate Studies: Theses & Dissertations

This research investigated the liquid metal embrittlement (LME) of hot-dipped galvanized structural steel. The relationship between stress and failure time was analyzed to evaluate the potential presence of a critical stress threshold beyond which LME may occur. A testing apparatus to induce axial stress was designed and assembled in-house. A36 low carbon steel was tested in this study. Different deadweight loadings were applied to the testing sample along the axial direction. The test temperature was maintained by a programmable furnace while the sample gauge section was submerged in a molten zinc bath. Failure time and total displacement of the steel …

Environmental Assessment Of Biomass/ Torrefied Biomass And Waste Coal Co-Fired Power Plants With The Incorporation Of Carbon Capture And Storage Technologies, Surja Sarkar

College of Graduate Studies: Theses & Dissertations

Climate change is a worldwide problem that has recently garnered significant attention in recent years. While widespread emissions of greenhouse gases, mainly CO₂, from the combustion of fossil fuels, contribute to global warming, biomass-based heat and electricity generation, on the other hand, is rapidly growing due to its smaller carbon footprint, aiding in attaining the goal of zero carbon emissions. In this study, the environmental assessment of the waste coal and biomass/ torrefied biomass co-fired power plants was completed using the life cycle assessment (LCA) methodology through the performance assessment of the co-fired power plants using the commercial …

Can We Talk About Sex? Exploring Teacher Preparedness Of Comprehensive Sex Education Delivery In Southeast Georgia, Tanya Jules

College of Graduate Studies: Theses & Dissertations

In 2022, the CDC estimated that youth and adolescents between the ages of 15 through 24 accounted for almost half of the 2.5 million cases of sexually transmitted infections in the United States. Teachers who deliver accurate sexual health information increase the accessibility of pertinent details to adolescents during crucial years of cognitive development, which could decrease adverse sexual health outcomes among youth. The utilization of a Comprehensive Sex Education (CSE) curriculum addresses all parts of sexual health by covering topics ranging from physical, biological, emotional, and social aspects of sexuality. However, educators who provide sexual health education must follow …

Investigation Of Topologically Protected Wave Propagation Near Dirac-Like Cones In Acoustic Metamaterials, Md Arif Iqbal Khan

College of Graduate Studies: Theses & Dissertations

This study presents a novel approach to investigate an exceptionally rare acoustic phenomenon – topologically protected wave propagation (TPWP) within a solid-solid domain. While previous research has attempted to unravel the physics behind this phenomenon, most efforts have been grounded in the framework of condensed matter physics and quantum mechanics often requiring complex geometries to realize TPWP in solid-fluid interactions. In contrast, this thesis introduces a geometric tuning method that enables the achievement of TPWP with simpler geometric configurations within a solid-solid domain. Rather than explaining by the quantum trio - quantum anomalous hall effect, quantum valley hall effect, and …

Development Of A New Green Infrastructure By Using Biochar Amended Topsoil For On-Site Stormwater Runoff Treatment, Ayesha Sadia

College of Graduate Studies: Theses & Dissertations

This Research Project aimed to design, build, operate and maintain, and monitor a new green infrastructure (GI) using biochar-amended topsoil for on-site stormwater runoff treatment in urban areas. The project involved evaluating the removal efficiencies of pollutants from stormwater runoff such as total suspended solid (TSS), nutrients including nitrogen and phosphorous, heavy metals including lead (Pb), zinc (Zn) and copper (Cu) and oil and grease etc. from the media of biochar amended topsoil. In this Project, a full-scale Field Test Site with a total area of 500 and 1 ft depth was built to on-site treat stormwater runoff from a …

Investigating Flash Flood Occurrence Using Negative Binomial Models In Maryland, United States Of America, Zainab O. Akinsemoyin

College of Graduate Studies: Theses & Dissertations

Globally, as extreme weather patterns intensify, flash floods have emerged as one of the most destructive and immediate environmental threats. In Maryland, flash floods are particularly concerning due to its diverse topography and increasing urban development, which exacerbates runoff and overwhelms drainage systems. The state has experienced significant flash flood events, highlighting the need for effective models to manage risks and inform mitigation strategies. While regression models such as the Negative Binomial (NB) and Zero-Inflated Negative Binomial (ZINB) are commonly used for count data analysis, their application to flash flood modeling in the USA, including regions like Maryland, remains limited …

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“I Felt We Were Actually Learning Things, Then Applying Them” Students’ Perceptions Of A Service-Learning Course, Christina Gipson, Jessica A. Mutchler, Arshpreet Kaur Mallhi, Amanda Lambert

Health Sciences & Kinesiology: Faculty Publications

Academic journals continue to produce articles that highlight record levels of student disengagement and lack of motivation. Faculty have been encouraged to use high impact, active learning strategies to increase student engagement and success (Patrick et al., 2016). One technique, service learning, allows students to become active learners through applying learned skills and theory from the classroom to community settings (Connolly, et al., 2017). The purpose of this study was to highlight students’ perceptions and experiences through three semester-long service-learning courses where students provided a fitness and mindfulness program to local teachers to help them address stressors. Undergraduate sports management …

Bitcoin As A Legal Tender: The Case Of El Salvador, Ariela Samour

Honors College Theses

On September 7, 2021, President Nayib Bukele made Bitcoin a legal tender in El Salvador. This action cemented El Salvador as the first country in the world to make cryptocurrency a legal medium of exchange. As a new legal currency, Bitcoin could be used in any transaction, from purchasing a cup of coffee to paying taxes inside the country. This paper discusses the background of the decision to make Bitcoin a legal tender in El Salvador and addresses how it affects socio-economic problems. Finally, the study administered a survey to more than 300 individuals in El Salvador to investigate the …

Comments From The Editors, Tulay Girard, Melek Meral Anitsal

Journal of Applied Marketing Theory

Comments from the Editors:

We welcome you to the current issue of the Journal of Applied Marketing Theory. The Journal of Applied Marketing Theory (JAMT) aims to provide a reputable platform for publishing academic research that advances marketing knowledge and offers insights for marketing managers.

In the current issue, we are pleased to present six manuscripts that offer unique insights into several diverse topics. Each article received praise from our review team and we are happy to have the opportunity to present them to you in this edition of JAMT.

The Digital Engine Model: Generating Leads Through The Application Of Dcm And Inbound Marketing, Kyle A. Huggins, John D. Hansen

Journal of Applied Marketing Theory

Digital Content Marketing (DCM) has become a primary tool for marketers in driving lead generation in today’s digital marketing world. Leading brands are creating and curating content trying to build brand equity and trust, connecting content to consumer action through brand story. And while strong theoretical models of content marketing have been discussed in the marketing literature, like Hollebeek and Macky (2019), there is a dearth of understanding about the application and direct impact of organic digital content strategies on marketing directives. This paper investigates an applied model, called The Digital Engine, which provides instruction on proper inbound marketing techniques …

Faculty Senate Agenda, Georgia Southern University, Faculty Senate

Faculty Senate Agendas

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