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Full-Text Articles in Entire DC Network
Developing And Evaluating U.S. Army Bridging For Ship Simulation, Jacob C. Hodges
Developing And Evaluating U.S. Army Bridging For Ship Simulation, Jacob C. Hodges
Theses and Dissertations
This research investigates the intricacies of ship simulation and developmental processes for integrating wet gap crossing capabilities into a simulated environment. The US Army Mark III Bridge Erection Boat (BEB) and Improved Ribbon Bridge (IRB) were modeled in commercial off the shelf (COTS) and Government Co-Owned (GCO) navigation software suites to determine their performance capabilities and limitations. Each model was constructed using naval architecture concepts to accurately capture their hydrostatic and hydrodynamic effects before being validated against available performance data and expert elicitation from expert US Army watercraft operators. Models were configured and tested in simulated river flows with current …
Root-Cause-Analysis Of Crane System Variable Frequency Drive Failures Through Testing And Power Quality Analysis, Elizabeth Hayes
Root-Cause-Analysis Of Crane System Variable Frequency Drive Failures Through Testing And Power Quality Analysis, Elizabeth Hayes
Theses and Dissertations
This study investigates the root-cause-analysis of repeated failures of an AC-DC converter in a variable frequency drive system on a 325-Ton crane through electrical testing based on NETA and IEEE standards. The testing is accompanied with a power quality study based on the IEEE 519-2019, simulation using SKM power modeling software, and fault study from two captured faults. The converter failures presented no immediate solution despite experienced technicians, engineers, and other specialists. This study attempts to eliminate root-cause by examining the line-side equipment and in-feed power quality as contributions to the converter faults.
Parhsom: A Novel Parallel Hierarchical Self-Organizing Map Implementation, Rebekah E. Lane
Parhsom: A Novel Parallel Hierarchical Self-Organizing Map Implementation, Rebekah E. Lane
Theses and Dissertations
The digital age has completely transformed the way that information is processed and stored, which makes cybersecurity a crucial field of research. Cybersecurity contains many different domains, but this work focuses on Intrusion Detection Systems (IDSs). Within the literature, Hierarchical Self-Organizing Maps (HSOMs) have been used to create trustworthy, explainable, and AI-based IDSs. However, HSOMs are trained sequentially, which means that training HSOMs on large datasets is slow. This work presents a novel parallel HSOM architecture, called parHSOM. The purpose of this research is to investigate the effect that parallel computation has on the HSOM training time. parHSOM is tested …
Assessment Of Local Ecological Knowledge, Oyster Predation, And Habitat Function To Improve Management Of Nearshore Habitats, Cynthia Evelyn Marie Lupton
Assessment Of Local Ecological Knowledge, Oyster Predation, And Habitat Function To Improve Management Of Nearshore Habitats, Cynthia Evelyn Marie Lupton
Theses and Dissertations
Coastal ecosystems along the northern Gulf of Mexico are ecologically and economically vital yet increasingly threatened by environmental change, habitat degradation, and knowledge gaps that complicate restoration and management efforts. This dissertation integrates social and ecological approaches to improve understanding of predator dynamics, stakeholder perceptions, and habitat function related to nearshore habitats. Thereby, providing information that can inform adaptive management and restoration in the region through addressing three overarching objectives: 1) evaluate stakeholder perceptions of oyster (Crassostrea virginica) predation and management practices; 2) quantify environmental and habitat factors influencing oyster drill (Stramonita haemastoma complex) abundance; and, 3) assess the influence …
Reproductive Genetics Of Caenorhabditis Nematodes, Dharani U. Matharage
Reproductive Genetics Of Caenorhabditis Nematodes, Dharani U. Matharage
Theses and Dissertations
Variation in reproductive traits and genome evolution reflects the interaction between selection, environment, and life-history. In the genus Caenorhabditis, recombination rate and sperm size exhibit a striking variation between strains and species. Here, Iintegrate three projects investigating recombination rate variation and recombination plasticity in C. elegans and sperm size divergence across Caenorhabditis species. First, I quantify recombination rates in two genetically distinct strains, N2 and CB4856, with different levels of laboratory adaptation using fluorescent markers spanning across gene-rich and gene-poor regions of the chromosome IV. I identify significant differences in recombination rate between the two strains within both gene-rich and …
Using Seafloor Geomorphology, Classification Schema, And Spatial Analysis To Predict Geologic Structures, With Applications For Mars, Emma Morgan
Theses and Dissertations
This study evaluated whether seafloor geomorphology can be used to predict subsurface fault locations along the Cascadia continental margin and explored whether such relationships can be transferred to Mars. Geomorphological classification schemas such as geomorphons, bathymetric position index (BPI), slope, rugosity, aspect, and curvature were derived from seafloor bathymetry data and used as predictor variables in maximum entropy (MaxEnt) models developed separately for Pre-Pleistocene, Pleistocene, Quaternary, and active fault datasets. Model performance ranged from AUC = 0.62 to 0.67, showing moderate predictive skill, with younger fault systems exhibiting stronger geomorphic associations. A secondary analysis showed a weaker but detectable relationship …
Unbounded Derivations On Algebras Associated With Monothetic Groups: An Expository Thesis, Britton Phillips
Unbounded Derivations On Algebras Associated With Monothetic Groups: An Expository Thesis, Britton Phillips
Theses and Dissertations
This thesis is an expository exploration of the paper Unbounded Derivations in Algebras Associated with Monothetic Groups. Monothetic groups will be utilized to create a minimal system that gives rise to two C*-algebras, and once we have these algebras, unbounded derivations will be able to be defined on them. These derivations are able to be classified and decomposed into ”special” derivations, and these decompositions help simplify the comparisons between derivations on different algebras. In particular, we emphasize the classification, covariance properties, innerness and approximate innerness, and the lifting behavior of these derivations.
Development And Evaluation Of A Closed-Loop Controlled Ugv With Rtk-Gps Navigation For Plastic Contamination Removal From Cotton Fields, Asifur Rahman
Development And Evaluation Of A Closed-Loop Controlled Ugv With Rtk-Gps Navigation For Plastic Contamination Removal From Cotton Fields, Asifur Rahman
Theses and Dissertations
Plastic contamination in cotton reduces fiber quality, causing an estimated $600 to $750 losses annually for the U.S. cotton industry. This work developed an RTK-GNSS-based UGV navigation for a collaborative UAV-UGV plastic retrieval system. An Amiga rover was adopted and modified, and a closed-loop PD steering control based on cross-track and heading error was developed and deployed in it. The first set of tests was conducted on a 111 m A-B line on a flat lane based on ASABE/ISO 12188-2 guidelines, then repeated in a cotton field. The P50 and P95, and max cross-track errors were about 1, 5, and …
Patterns Of Molecular Evolution Driving Reproductive And Genomic Processes In Sauropsids, Taylor Green
Patterns Of Molecular Evolution Driving Reproductive And Genomic Processes In Sauropsids, Taylor Green
Theses and Dissertations
Sexual reproduction is an important driver of genetic diversity and speciation through such forces as selection, mutation, and drift. Sauropsids are an appropriate clade to study shared molecular drivers of sexual and genomic evolution due to their genome architecture, sex determination mechanism (SDM) plasticity, and large syntenous genomic regions. Using comparative phylogenetic methods, I identify predictable patterns of selection in meiotic recombination genes and clade-specific drivers of recombination rate evolution. Then, leveraging whole genome sequencing, I demonstrate that American alligator genomes are characterized by an ancient loss of genetic diversity driven by drift and historic inbreeding. I also generate a …
Bridging The Gap: Implementing A Modified Pacing Guide For Students 2-3 Grade Levels Behind In An Accelerated Program, Crystal T. Tyson
Bridging The Gap: Implementing A Modified Pacing Guide For Students 2-3 Grade Levels Behind In An Accelerated Program, Crystal T. Tyson
Theses and Dissertations
Accelerated secondary programs serving students performing two to three grade levels below proficiency often operate within compressed instructional timelines aligned to state accountability requirements. However, limited research examines how state-level policy structures influence district pacing practices within these settings. The purpose of this capstone study is to examine how accountability frameworks shape district pacing implementation and how pacing compression affects instructional flexibility for accelerated learners. Guided by a policy-to-practice conceptual framework linking state accountability systems, district pacing structures, and instructional impact, the study addresses three research questions focused on (a) policy influence on pacing design, (b) structural implications of pacing …
Beyond English: Auditing And Mitigating Cross-Lingual Data Contamination In Multimodal Large Language Models, Pavan Dharma Adapa
Beyond English: Auditing And Mitigating Cross-Lingual Data Contamination In Multimodal Large Language Models, Pavan Dharma Adapa
Theses and Dissertations
This thesis extends data contamination auditing for multimodal large language models to multilingual settings. Using LLaVA 1.5 and a high-fidelity French parallel dataset derived from ScienceQA, the study evaluates how performance changes when identical image-question pairs are translated from English to French. The resultsshow a substantial cross-lingual performance decline and frequent flips from correct English predictions to incorrect French predictions, indicating that benchmark performance can depend heavily on memorized English-specific patterns rather than stable multimodal reasoning. To address this weakness, the thesis introduces an inference-time mitigation strategy based on perturbation ensembling and cross-lingual consistency aggregation. The proposed method reduces instance-level …
The Lived Experiences Of Mississippi School Leaders Addressing Food Insecurity In Their Schools, Krista Vowell Nicholson
The Lived Experiences Of Mississippi School Leaders Addressing Food Insecurity In Their Schools, Krista Vowell Nicholson
Theses and Dissertations
Title of Study: The lived experiences of Mississippi school leaders addressing food insecurity in their schools Pages in Study 135 Candidate for Degree of Doctor of Philosophy Food insecurity among children in the United States remains a significant concern for educational leaders. Researchers have consistently found a relationship between food insecurity and diminished student academic outcomes. The purpose of this qualitative phenomenological study was to examine how school leaders and teachers in schools in Mississippi describe their lived experiences responding to students dealing with food insecurity. The research study included semi-structured interviews with 12 principals and teacher leaders from four …
A Pedagogically Effective Conceptual Framework For The Resilience Of Unit Test Suites To Refactoring, Daniel Paul Knight
A Pedagogically Effective Conceptual Framework For The Resilience Of Unit Test Suites To Refactoring, Daniel Paul Knight
Theses and Dissertations
Unit test suites are intended to support safe and efficient source code refactoring, yet in practice they can hinder rather than help when tests are tightly coupled to implementation details. Such non-resilient tests require frequent co-evolution, consume valuable engineering time, and may disincentivize beneficial code improvements. While concepts such as passive and active resilience, test smells, and technical debt have been studied individually, they have not been integrated into a single actionable framework, nor has their pedagogical value been systematically evaluated. This dissertation introduces a novel conceptual framework for the resilience of unit test suites to refactoring, grounded in resilience …
Comparison Of Degree Attainment Between Traditional And Nontraditional Community College Transfer Students From The Beginning Postsecondary Students Longitudinal Study, Diann Mills Nichols
Comparison Of Degree Attainment Between Traditional And Nontraditional Community College Transfer Students From The Beginning Postsecondary Students Longitudinal Study, Diann Mills Nichols
Theses and Dissertations
Nontraditional students have been part of higher education for over a century, yet their enrollment has increased substantially in recent decades and is expected to continue rising. Many return to college to gain credentials and skills needed for career advancement or reentry into the workforce. Despite their growing presence, nontraditional students remain less likely than traditional students to complete a degree within six years, often due to competing responsibilities such as work, family obligations, and financial strain. The purpose of this study was to compare nontraditional community college students who transferred to four-year institutions with their traditional counterparts in terms …
From Natural Language To Cryptographic Protocol Specifications: Evaluating Llms For Cpsa Generation, Martin Duclos
From Natural Language To Cryptographic Protocol Specifications: Evaluating Llms For Cpsa Generation, Martin Duclos
Theses and Dissertations
Formal verification can prove the security properties of cryptographic protocols, but translating natural language specifications into formal models requires specialized expertise, limiting the broader adoption of formal verification methods. This dissertation investigates whether large language models (LLMs) can lower this barrier by automatically generating Cryptographic Protocol Shapes Analyzer (CPSA) models from natural language protocol specifications. We evaluate three complementary strategies for improving LLM-based CPSA code generation through systematic experimentation across 104 protocols and 15 language models. First, we analyze prompt engineering and find that moderate structured guidance yields the most accurate outputs, while excessive prompt complexity degrades performance. Second, we …
Evaluating The Spray Patterns Of Boomless Spray Nozzles At Increasing Application Speeds, Thomas Hayden Duncan
Evaluating The Spray Patterns Of Boomless Spray Nozzles At Increasing Application Speeds, Thomas Hayden Duncan
Theses and Dissertations
Boomless nozzles have been largely ignored in spray studies, resulting in limited understanding of their spray patterns and how they are affected by operating parameters. A study was conducted to evaluate the effect of application speed on the performance of four boomless nozzles. Dyed water was applied to Kromekote® paper to assess spray distribution based on coverage data at three speeds, and MSMA was applied to a mixed turf stand to evaluate the effect of speed on performance. Overlap simulations were done to evaluate how uniformity could be improved, and nozzle performance was compared to manufacturer claims. Spray patterns of …
Intersection Of Food Insecurity And Housing Among Veterans And Disabled Adults, Julie Anne Stepp
Intersection Of Food Insecurity And Housing Among Veterans And Disabled Adults, Julie Anne Stepp
Theses and Dissertations
This study examines how housing tenure is associated with food insecurity (FI) among veterans and adults with disabilities, utilizing the housing-food insecurity nexus framework. Previous research documents elevated FI among veterans and individuals with disabilities, yet few studies assess housing tenure as a mechanism connecting these statuses to food hardship. Using data from the 2024 National Health Interview Survey Adult Sample (n=32,629), logistic regression models estimate the independent and interactive effects of renting, veteran status, and disability status on FI. Results suggest renters have significantly higher odds of FI than homeowners, even after adjusting for poverty status, SNAP participation, and …
Design And Uncertainty Methodology In High Efficiency Filtration Media Testing, Jeremy Andrei Adriano
Design And Uncertainty Methodology In High Efficiency Filtration Media Testing, Jeremy Andrei Adriano
Theses and Dissertations
Electrospun nanofiber media are being developed as potential alternatives to conventional HEPA filtration materials due to their small fiber diameters and tunable microstructures. To support future testing of these materials, the Small-Scale Test Stand (SSTS) at the Institute for Clean Energy Technology (ICET) requires modifications to ensure accurate and repeatable aerosol filtration measurements. Electrospun filters introduce challenges including fragile media structures and uncertain filtration efficiencies that may allow particle penetration to downstream instrumentation. This work evaluates adaptations to the SSTS design to support testing of electrospun filtration media. In addition, an uncertainty framework for aerosol measurements obtained using a Scanning …
Impacts Of Structural Design On Oyster Survival And Predation In Restored Oyster Reefs, Jaden Akers
Impacts Of Structural Design On Oyster Survival And Predation In Restored Oyster Reefs, Jaden Akers
Theses and Dissertations
Restoration efforts are critical to ensure healthy oyster populations, but the high cost and marginal success rate of many restoration efforts demonstrates the need to evaluate alternative oyster reef restoration designs and strategies. To address this issue, I conducted a paired field and mesocosm study to assess the influence of structural design on oyster survival and predation. Results of the field portion of this study showed that oyster survival was greatest in short and bed-level (i.e., sitting on the sea bottom) reef designs. When assessing how design features impact oyster drill activity, elevated reefs (i.e., elevated above the sea bottom) …
Machine Learning-Based Decision Support Models With Applications In Postsecondary Education, Marco Paolo Anglesio
Machine Learning-Based Decision Support Models With Applications In Postsecondary Education, Marco Paolo Anglesio
Theses and Dissertations
This dissertation investigates the deployment of machine learning methodologies in an industrial engineering framework for the development of advanced decision support systems in the context of enrollment management. Drawing on techniques from educational data mining, the research addresses three key phases in the lifecycle of traditional and non-traditional students. First, it analyzes student retention using predictive classification models designed to identify individuals at elevated risk of attrition. Second, it employs temporal convolutional networks for time series forecasting, estimating aggregate enrollment levels over highly variable, finite planning horizons on the basis of partially observed data and using an asymmetric loss function. …
Enhancing Professional Development Opportunities For Mississippi Early Childhood Education Technology Students, Sheri H. Anders
Enhancing Professional Development Opportunities For Mississippi Early Childhood Education Technology Students, Sheri H. Anders
Theses and Dissertations
This capstone project examined professional development opportunities for early childhood students enrolled in Early Childhood Education Technology (ECET) programs in Mississippi. Grounded in Situated Learning Theory and aligned with the National Association for the Education of Young Children (NAEYC) Professional Standards and Competencies, this study used a desk-based systematic literature review to examine how ECET students engage in professional development during preparation, how standards-aligned experiences support preparedness and professional identity development, and what barriers limit access to meaningful opportunities. Findings indicate that professional development during preparation is often informal and inconsistent; however, participation in professional communities such as conferences, coaching, …
Institutional Predictors Of Overall Retention And Graduation Rates For Black Male Students At Public Two-Year Colleges In The Southeastern United States, Jonathan Larry Armstrong
Institutional Predictors Of Overall Retention And Graduation Rates For Black Male Students At Public Two-Year Colleges In The Southeastern United States, Jonathan Larry Armstrong
Theses and Dissertations
This quantitative, cross-sectional, non-experimental study examined institutional characteristics associated with retention and graduation outcomes at public two-year colleges in the Southeastern United States. Using data from the Fall 2023 Integrated Postsecondary Education Data System (IPEDS), the study analyzed institutional student–faculty ratio, core expenditures per full-time equivalent (FTE) student, and academic support expenditures per FTE as predictors of institutional full-time fall-to-fall retention rates for all students and 150% graduation rates for Black male students. Descriptive statistics indicated substantial variation across institutions in spending and student outcomes. Simple linear regression analyses revealed no statistically significant relationships between student–faculty ratio or core expenditures …
How Did A Pandemic Impact Park Usage Among The Older Adult Populations In Memphis, Tn?, Katherine Barlow
How Did A Pandemic Impact Park Usage Among The Older Adult Populations In Memphis, Tn?, Katherine Barlow
Theses and Dissertations
During COVID-19 older adults’ populations were a vulnerable demographic, and through a review of existing literature it was determined that there is limited research about park and outdoor space use during COVID-19 by older adults. This research seeks to address these gaps by examining how a pandemic impacted park usage among the older adult population (age 60+) in Memphis, TN at Shelby Farms Park. This study examines the comparison of park use during (2020-2023) and after (2023-present) COVID-19. A mixed methods approach was employed. Wilcoxon Signed Rank test was run to analyze the survey data and a significant statistical difference. …
On The Bias And Variance Of The Plug-In Estimator For Generalized Shannon’S Entropy, Shirli Salihaj Arndt
On The Bias And Variance Of The Plug-In Estimator For Generalized Shannon’S Entropy, Shirli Salihaj Arndt
Theses and Dissertations
This dissertation analyzes the bias and variance of the plug-in estimator for generalized Shannon’s entropy. The setting is discrete data where observations take categorical values and the statistical object of interest is a probability distribution on an alphabet of possible outcomes. In such problems, entropy provides a relabeling-invariant summary of dispersion, but estimation can be challenging when the number of possible outcomes is large relative to the sample size. In addition, on some countably infinite alphabets, the classical Shannon entropy may diverge, motivating alternative entropy-like targets. Generalized Shannon’s entropy is defined by applying Shannon entropy to an escort reweighting of …
The South Got Somethin' To Say!: Black Student Affairs Professionals Sustaining Equity Work Amid Dei Dismantling, Jaborius D. Ball
The South Got Somethin' To Say!: Black Student Affairs Professionals Sustaining Equity Work Amid Dei Dismantling, Jaborius D. Ball
Theses and Dissertations
Scholarship within the academy extensively interrogates the realities of Black faculty but neglects the lived experiences of Black Student Affairs Professionals (BSAPs). This omission renders BSAPs labor and experiences institutionally invisible while reinforcing the narrative of equity work being a racial obligation pushed on Black professionals rather than institutional responsibility. Although representing 15% of the higher education workforce, this gross percentage is disproportionately concentrated in lower-paying, non-exempt staff positions (e.g., service, office/clerical) rather than in decision-making authority (CUPA-HR, 2025). Despite structural marginalization and inconsistencies, institutions rely on Black professionals to bear the brunt of racialized equity labor work classified as …
The Effect Of Stem Recutting And Floral Food On Vase Life Of Zinnias Elegans, Lauren Elise Baskin
The Effect Of Stem Recutting And Floral Food On Vase Life Of Zinnias Elegans, Lauren Elise Baskin
Theses and Dissertations
A recent shift in the cut flower market focuses on locally produced cut flowers, creating interest in the consumer mind. The vase life of these cut flowers varies by variety and species. Knowing the proper post-harvest protocol is crucial information, as this affects flower’s longevity. This research used a 2x2x2 factorial design examining the zinnias variation in vase life between the following test groups: zinnias with trimmed and untrimmed stems in tap water and trimmed and untrimmed stems in floral food solution. The results of the study indicated that zinnias placed in a floral food solution and were trimmed have …
An Evaluation Of Mississippi’S Policy For Identifying And Exiting Targeted Support And Improvement (Tsi) And Additional Targeted Support And Improvement (Atsi) Schools, Christopher A. Burrow
An Evaluation Of Mississippi’S Policy For Identifying And Exiting Targeted Support And Improvement (Tsi) And Additional Targeted Support And Improvement (Atsi) Schools, Christopher A. Burrow
Theses and Dissertations
The Every Student Succeeds Act (ESSA) requires states to identify schools for improvement based on overall performance and the performance of student subgroups. While substantial research has examined CSI schools, limited attention has been given to state policies governing the identification and exit of TSI and ATSI schools. This project evaluates Mississippi’s policy for identifying and exiting TSI and ATSI schools to determine whether the system appropriately identifies underperforming subgroups, promotes sustained improvement, and aligns with ESSA's equity-focused intent. Guided by the policy analysis triangle framework, the study employed a desk-based secondary data analysis of Mississippi’s publicly available state and …
Assessing Differences In The Frequency And Severity Of Osteoarthritis On The Mandibular Condyles Between Males And Females At Tell Abraq, Brittany C. Brown
Assessing Differences In The Frequency And Severity Of Osteoarthritis On The Mandibular Condyles Between Males And Females At Tell Abraq, Brittany C. Brown
Theses and Dissertations
Tell Abraq, a Bronze and Iron Age site in the United Arab Emirates, was a center of trade and cultural expansion during the Umm an-Nar period (2700–2100 BCE). Its multichambered tombs contain large, commingled burials, reflecting increasing sedentism and agricultural practices. This study examines mandibular osteoarthritis (OA) to explore lived experience and biomechanical stress. A total of 138 adult mandibles were analyzed for sex and OA severity. Results show generally mild and infrequent OA, though preservation limited analysis. Sex estimates suggested more gracile morphologies than previously identified. No strong sex-based differences in OA were observed. Overall, findings highlight the impact …
Cytokinins, Gibberellins, And Ethylene On Plant Form And Flowering In Streptocarpus, Rachel Bobo
Cytokinins, Gibberellins, And Ethylene On Plant Form And Flowering In Streptocarpus, Rachel Bobo
Theses and Dissertations
Plant form and flowering of Streptocarpus x hybridus Ladyslippers® ‘Grape Ice’ and ‘Deep Blue Vein’ were examined in response to exogenous application of ethephon [(2-chloroethyl) phosphonic acid], gibberellin 3 (GA3), benzyladenine (BA), and growth retardants ancymidol and chlormequat chloride. 750 mg L-1 ethephon applied at 3 weeks post-transplant (WPT) is effective in chemically pinching premature floral buds, delaying flowering by up to 10 days without restricting final plant size. Early applications of GA3 and BA hasten flowering by up to 10 days. GA3 and BA also interacted to promote floral development when applied early in the production cycle; increasing flower …
Determining Agricultural Literacy Proficiency Of Extension Professionals And Primary Volunteers In Mississippi, Molly Campbell
Determining Agricultural Literacy Proficiency Of Extension Professionals And Primary Volunteers In Mississippi, Molly Campbell
Theses and Dissertations
The development of agricultural literacy is a lifelong process, moving from gaining agricultural knowledge to communicating with others to applying to societal issues, and extends beyond the formal classroom. The Mississippi State University Extension Service has the ability to reach various audiences through educational programming, making them a potential catalyst for change in increasing agricultural literacy across the state. The study aims to determine the agricultural literacy levels of Extension professionals and primary volunteers in Mississippi and the factors potentially influencing these levels. Twenty-nine Extension professionals and eleven primary volunteers completed a survey of demographic questions and the Judd-Murray Agricultural …