Digital Commons Network^™

Metal-Organic Frameworks And Nanostructured Materials For Environmental Applications, Arunkumar G

Theses and Dissertations

The global population and economic development are experiencing rapid growth. Concurrently, environmental challenges such as global warming, soil, water, and air pollution are also rising. Each year, approximately 700,000 tonnes of products are generated from 100,000 tonnes of commercial dyes. Following their use, these dyes are often released into water bodies.

This contamination of water and land results in the formation of mutagenic and carcinogenic substances harmful to living organisms. Therefore, it is imperative to treat industrial wastewater to enable its recycling for various applications. Parallelly, the vehicles are becoming indispensable to human life modern world's urbanization and advancement.

The …

Investigation Of Dependency Parsing Techniques For Digital Document Analysis Through Deep Learning Approach, Rekah D Ms

Theses and Dissertations

Digital document dependency parsing is a significant task in natural language processing. Dependency parsing supports verification of the grammatical correctness of a sentence besides enabling extraction of relevant documents. Inappropriate extraction of features may result in falsely parsing a document, leading to decreased accuracy. Machine learning methods have been employed to perform feature extraction. However, selecting pertinent features was never achieved which minimizes the time consumption and overhead.

Hence, novel machine learning and deep learning techniques have been designed in our work for accurate and computationally efficient digital document analytics through dependency parsing. Four different contributions have been proposed for …

Cyclone Intensity Prediction In The Bay Of Bengal Using Deep Learning Methods, Senthil Kumar J

Theses and Dissertations

The Bay of Bengal region's coastlines have been badly devastated by tropical cyclones, as the region experiences an average of five to six cyclones per year, with about two to three of these intensifying into tropical storms or severe cyclones. Thus it necessitates to study the accurate and efficient forecasting of their intensity to improve preparedness and response to natural disasters. The present study compares and examines three distinct approaches to cyclone intensity prediction using historical datasets from 1998 to 2020: hybrid optimisation, deep learning-based, and empirical approaches.The predicted accuracy, computational effectiveness, and feasibility for real-time scenarios of each model …

Design And Development Of Machine Learning And Deep Learning Based Algorithms For Cyberattacks Detection, Abiramasundari S

Theses and Dissertations

E-mail is the fastest mode of communication. It is amongst the most commonly used modes of communication and can be used for both legal and illegal purposes. Many elements that could be useful in detecting email fraud are constantly being investigated. Phishing assaults in which thieves use Internet to trick consumers into visiting fake websites are very common and are causing significant harm to victims. Several methods of filtering phishing emails have been devised but a solution to the problem still evades. One of the attacks addressed in this research is email phishing. Machine learning is a popular and efficient …

Investigations Of Secure Memory For Vlsi Based Crypto System, Vijay Sai R Mr

Theses and Dissertations

Semiconductor technology is growing very rapidly in their architectural developments, involving the usage of processor and memory. Presence of memory, in general is a vital commodity in various devices which are almost embedded into human activity, from robust work stations to handy mobile phones. Security of data stored in memory is very important, and hence, observation must be made that these valuable data should not be thwarted by malicious means. Security in cache memory is a major issue in memory related applications such as smart cards and bio-metric implementations.

Cache, is a small and limited memory located between central processing …

Executive Functioning And Mental Health In Emerging Adults: Type 1 Diabetes Status As A Moderator, Hannah Margot Mcdaniel

Theses and Dissertations

Emerging adults (ages 18-26) with type 1 diabetes mellitus (T1DM) are especially vulnerable to diabetes management challenges when taking on increased disease responsibility during this critical period of development. They may experience higher cognitive and psychological demands compared to peers. The study examined whether having T1DM moderated the association between executive functioning (EF) and mental health symptoms (i.e., depression, anxiety, stress, and disordered eating) in emerging adults. Exploratory analyses investigated the associations between EF, disease management, and mental health symptoms. Participants were 35 emerging adults with T1DM and 35 healthy controls. Participants completed questionnaire measures of mental health and performance-based …

The Association Of Anxiety, Familial Dysfunction, And Child Emotion Regulation Between Family Therapy Sessions 1 And 4, Kaelie Noel Lemmon

Theses and Dissertations

Few studies address how relational factors may be interdependent and impact child-focused problems that could be collectively addressed in systemic family therapy. The current study utilized a cross-lagged panel model to explore the associations of parental anxiety, familial dysfunction, and child emotion regulation between four family therapy sessions. The study included 224 parents who sought family therapy and participated in the Marriage and Family Therapy Practice Research Network (MFT-PRN). Data were collected at two time points across four family therapy sessions. The findings indicated that higher levels of parental anxiety at intake were associated with higher familial dysfunction at session …

The Governor’S Cabinet Project A Study Of The Evolution Of The Executive Branch, Revis. L. Edmonds

Theses and Dissertations

In Arkansas’s long path toward modernizing its executive branch, it may appear to the casual observer that the state was locked in a process in which its politics and its culture were engaged in a longstanding tug-of-war between traditionalists and modernizers—a conflict complicated by the state’s personality-based politics and restrictive post-Reconstruction constitution. It has often been asserted that the conflict, in Arkansas’s case the romanticizing of rural life as opposed to the economic and social interests of the fast-growing suburbs of Central and Northwest Arkansas, explains a great deal of this slow transition. This attitude was largely a product of …

Mathematics Student Teachers' Curricular Reasoning During Planning, Erika Breann Miller

Theses and Dissertations

Teaching is a complex practice, in part because of all the decisions teachers make daily. This is especially true for student teachers who have little to no prior teaching experience to inform them about the decisions that need to be made in the classroom and how to reason through all those decisions as they plan and enact the lessons. Secondary mathematics student teachers were introduced to the Instructional Pyramid (Dingman et al., 2021) which organizes and maps teacher’s mathematical reasoning onto four elements of a classroom—teacher, student, mathematics, and curriculum—to examine which curricular reasoning aspects they use while planning mathematics …

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

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 …

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 …

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 …

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 …

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

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 …

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

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 …

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 …

From Gametes To Genes: Genetic Quality Assessment Of Anuran Cryopreserved Spermatozoa And Derived Embryos, Trinity Isabella Kassuhn

Theses and Dissertations

Sperm cryopreservation is an important tool within the suite of assisted reproductive technologies (ART) as it enables long-term storage of genetically valuable gametes. However, knowledge of the diagnostic criteria for assessing sperm quality and the genetic consequences of using cryopreserved sperm in amphibians is limited. This gap has raised concerns in captive breeding and reintroduction programs regarding the potential impact that cryopreserved sperm and the derived embryos may have on a population. The thesis aims to investigate how sperm cryopreservation affects the genetic material in both sperm and resulting embryos, with implications for in situ and ex situ amphibian populations. …

“It Just Builds Character”: Building The Bullying Myths Scale, Jessica Weiss Utley

Theses and Dissertations

Approximately 20% of American children and adolescents report being victims of bullying each year (Irwin et al., 2022). Bullying victimization is linked to serious behavioral and psychological outcomes, like depression, anxiety, self-harm, and suicide (e.g., Chou et al., 2020; John et al., 2018; Mulder et al., 2017; Schoeler et al., 2018). Despite these sobering data, misconceptions continue to portray bullying as a normal part of growing up, that it is trivial in nature, and that some kids deserve to be bullied (Dawes et al., 2022; Kulig et al., 2008). This study tested the validity and efficacy of the Bullying Myths …

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.

Streamlined Technology Systems: Optimizing Technology Systems For Meridian Public School District, Latoya Atterberry

Theses and Dissertations

Technology has become a cornerstone of modern education, reshaping how teachers instruct and students learn. "Technology plays a pivotal role in shaping modern learning environments, offering opportunities for enhanced engagement and personalized learning experiences" (Ascione, 2023). This project focuses on the critical role of effective professional development in equipping teachers to integrate technology into their instructional practices meaningfully. Drawing on the TPACK (Technological Pedagogical Content Knowledge) and SAMR (Substitution, Augmentation, Modification, Redefinition) frameworks, this project examines how tailored professional development programs can bridge gaps in teachers’ technological and pedagogical knowledge, guiding them toward transformative technology use. This project culminates in …

Determining The Toxic Threshold And Other Use Characteristics For Industrial Hemp Seed Oil Used For Wood Product Protection, Daylan M. Barnes

Theses and Dissertations

Plant-based wood treatments have been utilized for many years, with varying success. Oils such as those extracted from linseed (flax), tung, and hemp plants have been used for thousands of years as finishes on wood. These are all drying oils, which dry to a film when exposed to air. Hemp seed oil has a high fatty acid content and can take a long time to dry on wood products but is valued in woodworking for being easy to use, food-safe, and having little to no odor. In this study, cold-pressed hemp seed oil, blended with a soybean carrier oil, is …

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 …

Tools We Use: Evaluating Uav And Photogrammetry Workflows For Early-Stage Site Documentation; Comparative Analysis For Small Landscape Architecture Firms, Bryant Baugus

Theses and Dissertations

Landscape architects utilize advanced technologies in the design process. Advancements in automation and data capture have opened up new opportunities for UAVs and photogrammetry to produce high-resolution imagery, contours, and 3D models. By leveraging UAVs early in the design process, landscape architects are able to maximize advantages: site analysis through computational software, 3D sectional information, and hydrology prediction. This research focuses specifically on the advantages UAVs offer compared to established workflow methods. It examines four unique workflows for early-stage site documentation: capturing the site with UAVs through photogrammetry, generating a site plan from publicly available GIS data, gathering information from …

Autonomous Generation Of Ids Rules From Threat Intelligence, Azim Bazarov

Theses and Dissertations

Signature-based Intrusion Detection Systems (IDS) detect malicious activities by matching network or host activity against predefined rules. These rules are derived from Cyber Threat Intelligence (CTI), which includes attack signatures and behavioral patterns obtained through automated tools and manual threat analysis, such as sandboxing. The CTI is then transformed into actionable rules for the IDS engine, enabling real-time detection and prevention of threats. The constant evolution of cyber threats necessitates frequent rule updates, which delay deployment time and weaken overall security readiness. Recent advancements in autonomous agentic systems powered by Large Language Models (LLMs) offer the potential for automatic IDS …

Development And Application Of A Single Nucleotide Polymorphism Panel For Individual Identification And Population Genetic Assessment Of Swamp Rabbits, Chloe S. Beall

Theses and Dissertations

Swamp rabbits (Sylvilagus aquaticus) are a potentially useful indicator species for bottomland hardwood forest ecosystem health and can be monitored using fecal pellet surveys. Advances in genetic sequencing technology have allowed researchers to obtain genetic information about wildlife using non-invasive sampling. Genotyping-in-thousands by sequencing (GT-seq) allows researchers to target specific genetic markers selected to meet their objectives, such as differentiating individuals. We investigated the utility of GT-seq for genotyping DNA derived from swamp rabbit fecal pellets. We designed a GT-seq panel for swamp rabbits, then tested the panel on fecal samples collected in the Mississippi Delta. We developed a real …

Variables That Affect Designers’ Use Of Edible Planting In Residential Landscape Design, Emily Margaret Butler

Theses and Dissertations

Edible landscaping or “foodscaping” has had a resurgence into the mainstream. Though many trailblazers aim to encourage edible landscaping through homeowners and renters, there seems to be a lack of initiative from designers. To identify the variables that can affect a designer’s use of edible planting in the residential Southeastern United States, research and statistical methods were employed. Beyond interviewing an expert in the field of edible planting in the residential space, a survey consisting of both Likert and open-ended questions was sent to licensed landscape architects in the Southeastern U.S. The survey was conducted using Qualtrics and analyzed using …