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Characterizing And Modeling The Nonlinear Behavior Of Additively Manufactured Trapped-Powder Dampers, Jonathan Knight Black
Characterizing And Modeling The Nonlinear Behavior Of Additively Manufactured Trapped-Powder Dampers, Jonathan Knight Black
Theses and Dissertations
Laser Powder Bed Fusion (LPBF) can be used to create metal parts with pockets of retained, unfused powder that serve as mechanical dampers. These trapped-powder dampers show promise for reducing the amplitude of vibrations at resonance by orders of magnitude. However, little is currently understood about the nonlinearity and repeatability of trapped-powder dampers, meaning that the design process currently consists of expensive trial-and-error prototyping and iteration. The present work contributes a corpus of experimental measurements for rectangular beams with trapped-powder dampers of various dimensions and locations. Preliminary testing revealed the presence of a memory effect which we hypothesize to be …
Investigating Radiation Induced Rowhammer And Retention Failures In Dram, Tyler Ricks
Investigating Radiation Induced Rowhammer And Retention Failures In Dram, Tyler Ricks
Theses and Dissertations
It is desirable for DRAM devices to be used in harsh radiation environments. Exposure to radiation causes DRAM cells to lose their retention time as their ability to store charge effectively declines. Exposure also worsens the effect of disturbance that causes neighboring cells to flip when a row is opened multiple times: an effect known as the Row Hammer Effect. This thesis evaluates the impact of radiation-induced memory cell degradation by comparing memory cell's retention time and their resilience to the row hammer vulnerability. Three generations of DRAM were placed under a neutron radiation beam. Sections of the irradiated devices …
Remote Running Gait Analysis Using Smartphone Video And Monocular Pose Estimation: A Feasibility Study, Luke Vankeersbilck
Remote Running Gait Analysis Using Smartphone Video And Monocular Pose Estimation: A Feasibility Study, Luke Vankeersbilck
Theses and Dissertations
Introduction: Running is a common form of exercise that comes with many health benefits; however, many people stop exercising because of the high injury risk. Running injury is connected with biomechanical risk factors. Yet, these risk factors often show inconsistent and conflicting results across studies, largely due to small sample sizes limiting statistical power. Low subject numbers may be partly due to the time requirements of traditional motion capture. Monocular pose estimation offers a promising alternative by using machine learning to track body landmarks from a single camera. This study evaluated the feasibility of remotely collecting running biomechanics data using …
Ai-Enabled Innovations In Automated Essay Scoring And Feedback Systems, Michael J. Murff
Ai-Enabled Innovations In Automated Essay Scoring And Feedback Systems, Michael J. Murff
Theses and Dissertations
This dissertation examines the evolution and educational implementation of Automated Essay Scoring (AES) systems, with particular focus on generative artificial intelligence integration in educational assessment. Through a two-article format, this research addresses the persistent gap between technical capability and educational adoption that has characterized AES development over seven decades. The first article presents a comprehensive methodological review analyzing 122 studies spanning AES evolution from foundational computational linguistics through contemporary hybrid systems. Despite achieving strong correlations with human scoring, modern AES systems face resistance due to validity concerns and misalignment with pedagogical values, revealing an "adoption paradox" where technical sophistication often …
Under The Sea And Into The Future With Darwin, Verne, & Wells: Evolutionary Ideas In Early Science Fiction Literature And Atomic Age Adaptations, Suzette K. Forston
Under The Sea And Into The Future With Darwin, Verne, & Wells: Evolutionary Ideas In Early Science Fiction Literature And Atomic Age Adaptations, Suzette K. Forston
Theses and Dissertations
In the latter half of the nineteenth century, Charles Darwin's theories challenged traditional ways of thinking about the world so dramatically that his writings inspired the formation of a new genre: science fiction. Two pioneering authors, Jules Verne and H. G. Wells drew from Darwin's writings in their classic novels, 20,000 Leagues Under the Seas (1870) and The Time Machine (1895). Though the two authors are often compared because they were both early science fiction authors, they approached Darwinian theory in different ways. Verne uses a more extrapolative approach and focusing on specific details of Darwin's texts to tell a …
First-Year Writing Student Perceptions Of Graduate Student Instructor Authority, Lacey Madison Hamilton
First-Year Writing Student Perceptions Of Graduate Student Instructor Authority, Lacey Madison Hamilton
Theses and Dissertations
Graduate student instructors (GSIs) are trusted to teach first-year writing (FYW) courses across U.S. campuses, yet many still wonder how their undergraduate students actually perceive their authority, especially when they're new to teaching or sharing a classroom with full-time faculty. While previous research has explored how GSIs view their own authority and how institutional structures shape their roles, we know far less about what students of these GSIs think. This study aims to fill that gap. Building on Reed and Ostenson's work in Big Comp, I conducted a mixed-methods study in Fall 2024 to hear directly from FYW students about …
Circadian Influences On Glycemic Control In 24-Hr Fasts Initiated At Different Mealtimes, Elizabeth Z. Gipson
Circadian Influences On Glycemic Control In 24-Hr Fasts Initiated At Different Mealtimes, Elizabeth Z. Gipson
Theses and Dissertations
This study investigated whether the timing of a 24-hour fast influences indicators of glycemic control throughout the duration of the fast or upon refeeding. Twenty-four adults who have overweight or obesity (13 female, 11 male) completed this randomized crossover study involving three 24-hour fasts initiated at either 8:00 am, 1:00 pm, or 6:00 pm followed by a 75 g oral glucose tolerance test (OGTT) which lasted 2 hours. Continuous glucose monitors (CGMs) were employed to track interstitial glucose throughout each fast and OGTT. Plasma samples for insulin, glucagon, glucagon-like peptide-1 (GLP-1), and glucose-dependent insulinotropic polypeptide (GIP) were collected at the …
Compact Heterogeneous Architectures And Algorithmic Methods For Enhanced Real-Time Digital True Time Delay Beamforming And Radar Applications, Nathan Lynn Burnett
Compact Heterogeneous Architectures And Algorithmic Methods For Enhanced Real-Time Digital True Time Delay Beamforming And Radar Applications, Nathan Lynn Burnett
Theses and Dissertations
Modern radar and signal processing systems require efficient computational architectures to handle increasing data rates while still being able to maintain dynamic configurability and complex tasks. This thesis presents and explores hardware and algorithmic approaches addressing these demands across several different applications. First, a low-cost tracking platform and architecture for unmanned aerial vehicles (UAVs) is developed, which provides detection and tracking capabilities, compliant with new FAA remote ID regulations. Second, a GPU-FPGA based digital true time delay beamformer is implemented to achieve real-time wideband radio frequency interference (RFI) mitigation. Specifically this beamformer explores weight calculation and calibration through particle swarm …
Is Social Media Use A Reason For Socially Withdrawn Individuals' Mental Health Difficulties?, Angela Grundvig
Is Social Media Use A Reason For Socially Withdrawn Individuals' Mental Health Difficulties?, Angela Grundvig
Theses and Dissertations
Studies have found a link between subtypes of social withdrawal and internalizing problems throughout most of the lifespan. However, the work conducted in adolescence is much more limited including a lack of work examining factors that might mediate the association between forms of social withdrawal and internalizing problems. Social comparison may be one way in which social withdrawal predicts internalizing problems. There has been research showing that social media usage is associated with internalizing problems. The purpose of this study was to assess (a) the associations between three subtypes of social withdrawal (shyness, avoidance, and unsociability), respectively, and indices of …
A Novel High-Order Absorbing Boundary Condition For Elastic Multiple Scattering Problems, Jordan Gregory Sheppard
A Novel High-Order Absorbing Boundary Condition For Elastic Multiple Scattering Problems, Jordan Gregory Sheppard
Theses and Dissertations
Elastic waves are waves that propagate by causing deformations in an elastic medium such as metal, rock, or rubber. The main characteristic of elastic wave motion is the coexistence of multiple types of waves at once in the medium, including compressional and shear wave components. This type of motion can be used to study the impacts of physical phenomena such as earthquakes. In this paper, we discuss our research on the time-harmonic scattering of elastic waves in a medium by multiple circular cylindrical obstacles that the wave cannot penetrate. Using the Helmholtz decomposition, we break down the vector-valued physical system …
Versatile Waveform Generation And Clocking Techniques For Rfsoc-Based Digital Designs, Michael David Jones
Versatile Waveform Generation And Clocking Techniques For Rfsoc-Based Digital Designs, Michael David Jones
Theses and Dissertations
Within an ever-evolving radio-frequency (RF) environment, designers are required to adapt systems to increasingly constricted parameters. The available tools continually grow to match this need, but so does the complexity in using them. The radio-frequency system-on-chip (RFSoC) is an innovation that combines a field-programmable gate array (FPGA) with an integrated RF chain. Designing with an RFSoC allows for high-precision data transmission, sampling, and processing, but it can be difficult and time-consuming to develop specialized circuits. The open-source CASPER project aims to provide a library of abstracted block-design components to simplify the design process. An arbitrary waveform generator (AWG) is created …
Routine Outcome Monitoring With The Youth Outcome Questionnaire-30.2 Self-Report: Creating And Testing An Empirical Alert System And Exploring Informant Discrepancy Patterns, Tate M. Paxton
Theses and Dissertations
Objective: Youth self-report data using the YOQ-30 has not been specifically examined for use in routine outcome monitoring systems. This study used the YOQ-30 self-report in three endeavors: (1) modeling change trajectories in a large, naturalistic outpatient sample, (2) creating and testing an empirical alert system for deterioration, and (3) exploring the role of informant agreement, both descriptively and in a change trajectory model. Method: The sample consisted of 21,098 adolescents ages 12-17 receiving outpatient mental health care who used the OQ Measures system. Multilevel individual change trajectory models estimated symptom change over time. An alert system was developed on …
Topological Homotopy Groups, Tyler Evans
Topological Homotopy Groups, Tyler Evans
Theses and Dissertations
In general, the homotopy groups of topological spaces fail to be topological groups when endowed with the quotient topology. In this thesis, we show that for Peano continua with Abelian fundamental group, the fundamental group endowed with the quotient topology is indeed a topological group. However, this result does not extend to higher homotopy groups; that is, there exists a Peano continuum whose nth homotopy group, endowed with the quotient topology, is not a topological group. Additionally, a new characterization of the quotient topology in terms of a limit operator is introduced.
Attachment Or Aversion: A Study Of The Effects Of Parental Technoference On Child Emotion Knowledge, Brooklyn Coleman
Attachment Or Aversion: A Study Of The Effects Of Parental Technoference On Child Emotion Knowledge, Brooklyn Coleman
Theses and Dissertations
Young children's understanding of emotions is heavily socialized by their parents. Through interactions with parents, children learn what emotions look like, when they are expressed, and how they are labeled (Laible, 2004a). Interruptions to interactions between children and parents have the potential to influence the development of children's emotion knowledge. According to the DREAMER framework, how one family member uses media and technology can influence other family members (Barr et al., 2024). Technoference (i.e., digital distraction while with others) is one example of how media might interrupt family life and influence child development as a whole. The current study examined …
Comparing The Effectiveness Of Online Training With Behavioral Consultation: The Impact Of Teacher Buy-In And Efficacy, Allison C. Lindsey
Comparing The Effectiveness Of Online Training With Behavioral Consultation: The Impact Of Teacher Buy-In And Efficacy, Allison C. Lindsey
Theses and Dissertations
This study investigated the comparative effectiveness of two different behavioral training methodologies, online training and behavioral consultation, in supporting teacher implementation of evidence-based practices, with a focus on the roles of teacher buy-in and self-efficacy. Challenging behavior is on the rise and teacher's need to know how to apply behavior management strategies to their classroom in order for their students to be most successful. Many teachers do not begin their careers with proper behavior management knowledge, training experience, or do not feel a sense of efficacy in implementing behavior management. Lack of knowledge and training may lead to decreased teacher …
Refugee Families: Parental Traumatic Stress And Child Outcomes A Scoping Review, Britta Sedig
Refugee Families: Parental Traumatic Stress And Child Outcomes A Scoping Review, Britta Sedig
Theses and Dissertations
This scoping review synthesizes recent literature (2019-2024) to explore mechanisms linking parental trauma to child mental health outcomes within refugee families. Guided by a systemic and relational focus, 20 studies were identified and analyzed, revealing five central themes: intergenerational transmission of trauma, parenting practices as mediators, parent-child dyadic attachment, family functioning and conflict, and post-migration and acculturative stress. Findings highlighted associations between parental trauma-related symptoms and refugee children's emotional and behavioral concerns. Parenting practices were frequently linked to child wellbeing, with some studies identifying risk factors like harsh discipline and emotional unavailability, and others noting protective roles of intentional caregiving. …
Development Of Numerical Tools And Performance Metrics For Analysis Of Optical Particle Counters, Doug Webb
Development Of Numerical Tools And Performance Metrics For Analysis Of Optical Particle Counters, Doug Webb
Theses and Dissertations
Monitoring air quality is essential for understanding and mitigating the health impacts of airborne particulate matter (PM), which is linked to respiratory and cardiovascular disease. Optical particle counters (OPCs) are widely used for air quality monitoring, yet their precision and accuracy remain uncertain due to inconsistent performance evaluations. In this thesis, performance metrics are developed that can be used to assess the accuracy of OPCs in measuring PM concentrations and size distributions. Computational fluid dynamics (CFD) simulations are employed to analyze the behavior of particle-laden air streams through representative OPC models. The impact of design parameters is quantified using newly …
Tracing Tremor: From Upper-Limb Neuromusculoskeletal Dynamics To Movement Signatures In Essential Tremor, Landon J. Beutler
Tracing Tremor: From Upper-Limb Neuromusculoskeletal Dynamics To Movement Signatures In Essential Tremor, Landon J. Beutler
Theses and Dissertations
Tremor is a common neurological condition that significantly impairs the quality of life for millions. Despite this prevalence, the underlying mechanisms of its propagation remain poorly understood, and current treatment options often rely on trial-and-error methods. Moreover, the most common type, Essential Tremor (ET), presents a unique challenge due to its heterogeneity--patients exhibit a wide range of symptoms, severities, and responses to treatment. This thesis primarily advances tremor understanding through computational modeling, with a secondary focus on data-driven subtyping of ET via cluster analysis. These parallel paths aim to improve both mechanistic insight and clinical classification. Tremor propagation refers to …
Harnessing The Potential Of Biostimulants To Mitigate Drought And Heat In Soybeans, Vijaykumar Hosahalli
Harnessing The Potential Of Biostimulants To Mitigate Drought And Heat In Soybeans, Vijaykumar Hosahalli
Theses and Dissertations
Drought and heat stresses during vegetative and reproductive stages cause yield losses up to 50% in soybeans. Biostimulants have potential to improve stress tolerance and enhance crop resilience, but selecting an effective product remains challenging due to the wide range of commercial options. This study aimed to identify suitable biostimulants that alleviate drought and heat stress during vegetative and reproductive stages. There was 64% and 76% reduction in stomatal conductance under vegetative and reproductive stage drought stress, respectively. Drought and heat stress during reproductive stages resulted in 44% and 36% reduction in total seed weight, respectively. Among biostimulants, treated check …
Development Of Low-Cost Small-Batch Flibe Filtration, And A Comparison Of Uranium Tetrafluoride And Ionic Oxygen Oxidation In Flibe, Jacob D. Christensen
Development Of Low-Cost Small-Batch Flibe Filtration, And A Comparison Of Uranium Tetrafluoride And Ionic Oxygen Oxidation In Flibe, Jacob D. Christensen
Theses and Dissertations
Low-cost benchtop-scale molten fluoride salt cleaning was investigated in FLiBe (LiF-BeF2), focusing on electrochemical cleaning and filtration. FLiBe filtration was demonstrated using both pressurized and open filtration systems. Copper and 400 Monel meshes were effective and reusable. Wetting appears to be the primary obstacle to FLiBe filtration. Oxygen oxidation behavior in FLiBe was examined using cyclic voltammetry (CV) and cyclic square wave voltammetry (CSWV) techniques. Standard addition height measurement was used to determine electrode surface area. Results support a single-step 2-electron process, matching observations in literature. Pt electrodes may be prone to oxidative side reactions, although more investigation is required. …
Older Adult Men’S Well-Being: The Impact Of Masculinity And Negative Perceptions Of Aging, Darby D. Mackenstadt
Older Adult Men’S Well-Being: The Impact Of Masculinity And Negative Perceptions Of Aging, Darby D. Mackenstadt
Theses and Dissertations
Stereotype embodiment theory states that individuals who hold negative aging stereotypes may internalize them, and thus view their own aging process as negative. This study aimed to evaluate how older adult men may be influenced by their adherence to masculinity standards, such as men are expected to be strong and independent, in older adulthood. A sample of 438 men aged 55 and older living in the southern United States was analyzed, finding that beliefs of masculinity moderated the relationship between negative perceptions of aging and depression. Participants who reported a high adherence to masculinity beliefs and a negative perception of …
Transcription Fidelity In The Face Of Oxidative Damage, Eastilan Gyiwah Appiah
Transcription Fidelity In The Face Of Oxidative Damage, Eastilan Gyiwah Appiah
Theses and Dissertations
It is very important that the process of transcription is correctly carried out in the cell for the faithful expression of the genetic code. However, should mistakes happen, they can result in transcription errors which interfere with the protein-making machinery of the cell. This will result in accumulation of proteins and dysfunctional proteins that have the potential of causing diseases like Alzheimer’s. Oxidative damage caused by hydrogen peroxide is known to cause transcription errors in organisms like yeast. It is therefore important to investigate the extent to which hydrogen peroxide can damage cells.
Fungal Resistance Of Citric Acid Crosslinked Chitosan Treated Wood, Samuel Jacob Barton
Fungal Resistance Of Citric Acid Crosslinked Chitosan Treated Wood, Samuel Jacob Barton
Theses and Dissertations
Chitosan (CH), a linear polysaccharide biopolymer derived from chitin, is known for its antimicrobial and antifungal properties. However, its natural hydrophilicity limits its application as a wood preservative. This study explores the crosslinking of chitosan with citric acid (CA) to improve its stability and hydrophobicity, aiming to enhance its efficacy as a wood preservative. The study investigates fungal resistance against Gloeophyllum trabeum (brown-rot) and Trametes versicolor (white-rot) fungi using the AWPA E-10 soil block test for pine and gum samples vacuum-treated and dip-treated with CH-CA concentrations (CH 6%/CA 3%, CH 4%/CA 3%, CH 2%/CA 3%, and CH 1.5%/CA 3%). The …
Calibration And Validation Of The Thermal Finite Element Model For Er120s-G Wire Arc Directed Energy Deposition Using Infrared Cameras And Thermocouples, Joshua Mykl Bassett
Calibration And Validation Of The Thermal Finite Element Model For Er120s-G Wire Arc Directed Energy Deposition Using Infrared Cameras And Thermocouples, Joshua Mykl Bassett
Theses and Dissertations
Wire Arc Directed Energy Deposition (WA-DED) is a promising additive manufacturing method for producing large metallic components with high deposition rates and low costs. However, its rapid heat input can lead to residual stress, microstructural changes, and dimensional inaccuracies. Accurate thermal modeling is essential to mitigate these effects. This study presents a thermal calibration of a finite element model (FEM) for ER120S-G using thermocouples and infrared (IR) imaging. Thermal data were gathered from three experiments to complete the calibration of the FEM . Calibration focused on tuning the Goldak heat source parameters, power efficiency, and heat transfer coefficients to minimize …
Creating A Framework For Offering Alternative Credentials At Mississippi State University, Marian Montgomery Chancellor
Creating A Framework For Offering Alternative Credentials At Mississippi State University, Marian Montgomery Chancellor
Theses and Dissertations
As workforce demands evolve and learners seek more flexible, skills-focused education options, Mississippi State University’s College of Professional and Continuing Studies (CPCS) must innovate to remain responsive and competitive. This capstone project explores how MSU can design and implement a scalable framework for micro-credentials that align with employer needs, faculty expertise, and adult learner goals. Grounded in qualitative research, including interviews with faculty and industry leaders, the study identifies key workforce gaps—particularly in communication, leadership, and technical skills—and outlines a 6-stage development lifecycle for credential creation. Findings emphasize the importance of industry collaboration, applied learning, and policy support. The resulting …
Regulating Artificial Intelligence In The U.S.: A Historical-Innovation-Inspired Framework, Di Kevin Gao
Regulating Artificial Intelligence In The U.S.: A Historical-Innovation-Inspired Framework, Di Kevin Gao
Theses and Dissertations
The emergence of OpenAI\textquotesingle s ChatGPT has marked the dawn of a new Artificial Intelligence (AI) era, unleashing a wave of user excitement, moral panic, and apocalyptic warnings. Yet, these concerns have done little to slow the breakneck pace of AI development and deployment. Should the United States adopt the European Union\textquotesingle s top-down, legislation-first approach, or follow the United Kingdom\textquotesingle s bottom-up, court-driven model? This research draws from historical legislative parallels in the U.S. By examining past regulatory frameworks for disruptive technologies, including electricity, automobiles, the telephone, broadband internet, nuclear technology, cryptocurrency, commodity futures, modern pharmaceuticals, and social media, …
Understanding How Nws Meteorologists Tailor Hazardous Weather Messaging To Core Partners And Identify Local Vulnerabilities, Allison Camille Harvey
Understanding How Nws Meteorologists Tailor Hazardous Weather Messaging To Core Partners And Identify Local Vulnerabilities, Allison Camille Harvey
Theses and Dissertations
Over the past few decades, the National Weather Service (NWS) has continued to improve impact-based decision support services (IDSS) efforts to strengthen communication with core partners. This study addressed how a new spatially hazard-specific vulnerability tool called the Brief Vulnerability Overview Tool (BVOT) may impact how NWS meteorologists tailor messaging to their core partners. It was found that relationship building between NWS meteorologists and core partners is key to enhancing trust, especially during blue sky days. This was done by learning core partners’ needs, thresholds, and communication styles when presenting weather information. Core partners also noticed cues from NWS meteorologists …
Towards Applying Artificial Intelligence To Solve Np-Complete Problems Using Quantum Computing, Andrew Robert Haverly
Towards Applying Artificial Intelligence To Solve Np-Complete Problems Using Quantum Computing, Andrew Robert Haverly
Theses and Dissertations
This dissertation explores the methodology for more thoroughly entangling artificial intelligence and quantum computing. This is explored through a background search of problems solved using Grover’s quantum algorithm, a new quantum protein folding and drug discovery algorithm, using Grover’s algorithm to train quantum artificial neural networks, using quantum artificial neural networks for reinforcement learning, mapping classical assembly instructions to quantum circuits to make quantum programming easier, and using prompt engineering to get a classical artificial intelligence agent to solve an NP-Complete problem using a Grover’s algorithm. This method not only simplifies the creation of algorithms but also opens new avenues …
Tabletop Role-Playing Games As A Therapeutic Intervention: Translating Ttrpgs To Therapy, Joanne Adelle Hillerman
Tabletop Role-Playing Games As A Therapeutic Intervention: Translating Ttrpgs To Therapy, Joanne Adelle Hillerman
Theses and Dissertations
The purpose of this study was to examine the aspects of tabletop role-playing games, or TTRPGs, that are appealing to therapists, aspects of TTRPGs that may be challenging for therapists to implement, and to identify outside factors that may associated with therapists’ interest in using TTRPGs. This study used the technology acceptance model (Davis, 1989) as a theoretical framework. A sample of therapists and mental health workers (N = 102) answered survey questions on their perceptions of the ease-of-use and usefulness of TTRPGs in therapy, their likelihood to use TTRPGs in therapy, and additional items measuring outside influences on their …
Topnet R1: A Multi-Stage Ai Framework For Topic Discovery In Scientific Abstracts, Md Elias Hossain
Topnet R1: A Multi-Stage Ai Framework For Topic Discovery In Scientific Abstracts, Md Elias Hossain
Theses and Dissertations
Scientific abstracts are rich sources of knowledge, yet extracting meaningful topics remains challenging due to limitations in existing topic modeling techniques. Traditional methods often struggle with interpretability, scalability, and contextual understanding. To overcome these issues, we introduce TopNet R1, a multi-stage ensemble framework that integrates traditional topic models with contextual embeddings from Bidirectional Encoder Representations from Transformers (BERT) and Generative Pre-trained Transformer 4 (GPT-4) large language models (LLMs). Top- Net R1 operates in three phases: (1) topic generation using Latent Dirichlet Allocation (LDA), Non-Negative Matrix Factorization (NMF), Latent Semantic Analysis (LSA), and Hierarchical Dirichlet Process (HDP); (2) LLM-assisted pattern recognition …