Digital Commons Network^™

Gis And The 1944 U.S.–Mexico Treaty: Rethinking Transboundary Governance Under Climate And Demographic Stress, Pedro L. Sarabia

Master's Theses

This thesis examines the structural limitations of the 1944 U.S.–Mexico Water Treaty in the context of intensifying climate stress and growing population demand. Using GIS-based raster analysis of precipitation from 1981 to 2024, it maps hydrological trends in treaty-bound basins—particularly the Rio Grande and Lower Colorado—which exhibit persistently low and variable precipitation. These conditions, coupled with institutional rigidity, threaten the sustainability of binational water management. In addition to quantitative analysis, the study includes a qualitative assessment of transboundary governance dynamics, highlighting how institutional fragmentation and policy contention impede adaptive responses. The Treaty’s current surface-water-only framework excludes groundwater management, real-time data …

The Impact Of Teacher Training On Newcomer Integration, Erika Ibanez

Master's Theses

As global migration diversifies classrooms, teachers face growing responsibility to meet the academic, social, and emotional needs of students navigating new cultural and linguistic contexts. Therefore, this thesis examines how teacher training programs shape educators’ ability to support newcomer students in U.S. schools. Chapter One outlines the research problem and objectives, highlighting the need for inclusive teaching practices that promote newcomer integration. Chapter Two reviews literature on newcomer student integration, instructional strategies, and teacher professional development, framed by Culturally Sustaining Pedagogy. Chapter Three outlines the qualitative methodology, which involved semi-structured interviews with five K–12 teachers. Chapter Four presents key findings, …

Unequal Shocks: The Heterogeneous Impact Of Earthquakes, Claire Marie James

Master's Theses

What effect does neighborhood wealth have on disaster outcomes and disaster induced migration? Using the 2023 Kahramanmaraş Earthquake in Southern Türkiye and Syria as a natural shock, I examine how the short term migration response to building damage and earthquake exposure differs by average neighborhood home prices. Using a panel dataset of population by bing tile, from Meta’s Data for Good Project, I employ time series and cross sectional regression analysis. I find that wealthy neighborhoods are better able to retain population than non-wealthy counterparts.

The Long-Term Effect Of Universities On Local Technology, Dafina Rizvanolli

Master's Theses

This paper studies the long-term effects of universities on local economic complexity, contributing to new evidence on how higher education institutions shape local productive capabilities over time. While extensive research documents universities’ positive impact on development, fundamental questions remain about the mechanisms through which they operate. Our study employs the Economic Complexity Index (ECI), a measure that captures the diversity and ubiquity of regional economic structures, to provide novel insights into universities’ influence on local economies. Building on Andrews (2023), we exploit historical natural experiments in university site selection during the 19^th and 20^th centuries in the U.S. …

Leadership, Performance, And Retention: A Case Study Of Loreto Convent Girls' Secondary School, Matunda, Judith Nekesa

Master's Theses

This study investigates the role of leadership in influencing student performance and retention at Loreto Convent Girls’ Secondary School, Matunda, Kenya. Prompted by a noticeable decline in academic achievement, student enrolment, and staff morale, the research explores how leadership practices, governance structures, and the adequacy of leadership preparation have contributed to the institution’s challenges. Framed by Authentic Leadership Theory, the study employs a qualitative case study methodology, drawing on semi-structured interviews with stakeholders, including students, alumni, teachers, parents, and members of the Board of Management.

The findings reveal three interrelated leadership shortcomings: inadequate leadership development, frequent leadership changes, and governance …

Sustainability In Professional Sports: A New Nexus Of Profit And Social Responsibility, Matthew Teplitz

Master's Theses

The world is facing a climate crisis – corrective action that will improve our collective situation is needed, now. Those with the power to do so, in the capitalist structure under which we live, are largely the individuals, corporations, and governments with financial resources and the platform to inspire others to act. Two such entities, complete with the financial heft to make a difference and inspiration to spare, are North America’s National Basketball Association (NBA) and Spain’s La Liga. This thesis seeks to understand what distinguishes the NBA’s approach to sustainability from La Liga, and by employing each league as …

Mothers Who Homeschool: Experiences In Rural California, Kiah Combs

Master's Theses

The purpose of this study was to explore the experiences of mothers who homeschool

their children in the rural location of Shasta County, California (CA). This research was

guided by three research questions: 1) In what ways is the act of homeschooling a form

of resistance to existing power structures for mothers in a rural region in CA? 2) How

does the process of providing a homeschooling education for their children influence

mothers’ perceptions of themselves as confident and capable? 3) In what ways does

homeschooling allow mothers to offer their children an educational experience which

meets their unique needs …

Blind School Saved My Life: An Autoethnography On The Benefits Of Visual Impairment Schools, Valenzuella Jordan

Theses and Dissertations from DePaul University

This article is an autoethnography of my experiences in blind education. Covering the years from 1962-1977, this autoethnography compares my two years in public school education as a person with a visual impairment to my 12 years at a boarding school specifically designed for the visually impaired. The IDEA framework for disability education was developed in 1964 and I spent my early years of blindness educated under a program of that design with itinerant special education teachers. In 1965, I was admitted into the Illinois School for the Visually Impaired where I spent the rest of my years of K-12 …

Effects Of Different Forms Of Dietary Zinc On Weaned Steers When Fed Prior To Weaning, Christopher Lane Addison

Theses and Dissertations

Zinc (Zn) is crucial for many life sustaining processes within the body. Additional Zn is known to be beneficial during certain periods of increased stress. Weaning is one of the most stressful periods of beef calves’ lives. Due to this it was hypothesized that additional zinc in an organic form would increase weight gain and immune response compared to additional zinc in an inorganic form or no added zinc. No differences were found for ADG, Th score, IgG concentration, or mineral concentration among treatments. However, there was a novel and unexpected finding when there was no difference found in preweaning …

Real-Time Enhanced Tornado Warning Product Guidance Based On Tornado Debris Signature Height And Population Density, Alexander Cooke

Theses and Dissertations

This research aims to develop an operational program for enhancing real-time tornado warning capabilities by integrating tornado debris signature (TDS) analysis with population impact assessment. The proposed Python-based tool will ingest Level II radar data to identify and analyze TDS, estimating tornado intensity based on maximum TDS height. For high-intensity tornadoes, the program will project the potential impact area using storm motion vectors and integrate this with population density data. The system will assess whether the situation meets National Weather Service criteria for enhanced warning products, providing forecasters with rapid, objective guidance for critical warning decisions. The program’s performance will …

Best Practices In Community College Adult Education: Literature Review And Synthesis, Jon H. Lightsey

Theses and Dissertations

This study emphasizes the importance of adult education students and the critical lack of knowledge about promoting their success on satellite campuses in rural and low socioeconomic areas. This study aims to investigate best practices in adult education at community colleges to maintain the number of students enrolled until their program or training is completed. The high School Equivalency Diploma options include the GED, HiSET, and Competency-Based High School Equivalency Option. The results indicate adult education students might be more successful if they received the support services needed, such as counseling, tutoring, time management, and goal setting. This literature review …

The Effects Of Alfaxalone, Alone Or With Butorphanol, On The Ultrasonographic Appearance Of The Feline Spleen, Grace Mcbride

Theses and Dissertations

The sonographic effects of alfaxalone and butorphanol alone and in combination on feline splenic size, shape, margins, echogenicity, echotexture, and blood flow were investigated. In this randomized, prospective crossover study, 8 healthy adult cats were injected with alfaxalone 2.0 mg/kg IM, butorphanol 0.2 mg/kg IM, and each drug in combination. Splenic ultrasounds were performed before drug administration, then every 15 minutes for 1 hour. Heart rate, respiratory rate, and feline multiparametric sedation scores (FMSS) were recorded. Following at least a 7-day washout period, cats switched groups and the study was repeated. An increase in splenic size and no significant changes …

Integration Of Machine Learning Techniques With Computational Fluid Dynamics For Enhanced Backward-Facing Step Flow, Yahya Mekkaoui

Theses and Dissertations

This research presents a novel integrated framework combining computational fluid dynamics (CFD) with machine learning techniques to enhance the analysis of backward-facing step flows. A high-fidelity OpenFOAM CFD simulation was developed and validated against experimental data, accurately predicting the reattachment length (��/�� ≈ 6.18) and velocity profiles throughout the domain. Machine learning models, including Random Forest, Gradient Boosting, and Support Vector Regression, were integrated through a robust data pipeline, with the ensemble approach demonstrating superior performance (RMSE of 1.18 m/s, ��2 of 0.951). Feature importance analysis revealed pressure (32%) and turbulent kinetic energy (28%) as the dominant physical parameters governing …

Cotton Development, Yield, And Boll Distribution Response To Row Pattern And Plant Density, William Joseph Rutland

Theses and Dissertations

The effects of row pattern and plant density on the ability of cotton (Gossypium hirsutum L.) to compensate and sustain profitable yields has been evaluated by many studies. However, new varieties exhibiting more vigorous growth and more exaggerated row patterns have yet to be evaluated. Therefore, experiments were conducted in Starkville, MS and Stoneville, MS in 2021 and 2022 to evaluate the influence of 1x1 skip row patterns and plant density on cotton growth, development, yield, boll distribution, and profitability. In 2021 there was no yield response due to plant population. However, in 2022, yields increased as plant density increased. …

Shifting Sands: Moving From Reality To Unreality, Aaron Waterson

Theses and Dissertations

This is a series of stories that shifts from literary fiction to science fiction, each with their own inspiration and message. Inspirations include The Twilight Zone, Benjamin Percy, Da-Lin, Gabriel Garcia Marquez, The Sandman, and Endymion. Each of these stories is conversant with norms and traditions of storytelling and the connections between these and their inspirations are elaborated on in the Introduction that accompanies the collection as a whole.

Evaluating Rainfall Sensitivity Over Land To Tropical Cyclone Parameters Using Idealized Wrf, Madison C. Yawn

Theses and Dissertations

Tropical cyclones (TCs) are extreme weather events impacting the United States nearly every year. These events often cause severe damage due to the associated responses they produce including storm surge and rainfall, and the accurate estimation of these TC hazards is necessary to support coastal engineering, risk assessment, and emergency management activities. Evaluating TC-driven hazards is often done in combination with numerical models to simulate how environmental interactions alter the physical processes and responses of these storms. The purpose of this study was to simulate synthetic TC events using the Advanced Weather Research and Forecasting (WRF) model to understand how …

Adjuvants To Improve Pre- And Postemergence Weed Control In Soybean, Sydney Baker

Theses and Dissertations

Cover crops provide soybean producers with multiple benefits; however, cover crop residue can impose a physical barrier for herbicide spray droplets and hinder the deposition and performance of soil-applied residual herbicides. Adjuvants are routinely mixed with herbicides to improve weed control performance and may provide a way to help the spray droplets overcome the barrier that the cover crops impose. This research evaluated the effectiveness of several soil applied herbicide-adjuvant combinations to control Amaranthus spp. L., Sida spinosa L., and [Echinochloa crus-galli (L.) P. Beauv.] in soybean and the effectiveness of two surfactants for improving preemergence herbicide efficacy in a …

Wildfire Hydrologic Impacts, Kathleen E. Inman

Theses and Dissertations

Wildfires are essential processes for certain ecosystems but are increasing in severity and occurrence. These increases are negatively changing hydrology. Anticipating the hydrologic changes is necessary for management of effected watersheds, infrastructure, and downstream users. This study hypothesized land cover changes post-fire would increase water temperature and discharge in burned watersheds located in the Willamette Basin. This study (1) evaluated the change in estimated curve numbers (CN) from land cover pre-fire and post-fire to assess expected runoff impacts in watersheds, and (2) identified the significance of actual water temperature and discharge changes using non-parametric statistical analysis. An unburned watershed and …

Apatite Entrapment Of Iodine For Nuclear Waste Disposal Applications, William E. Laird

Theses and Dissertations

The purpose of this thesis is to provide baseline knowledge of iodine incorporation into calcium phosphate minerals, specifically apatite. Iodine-129 is a fission product in Spent Nuclear Fuel (SNF) that can administer significant amounts of radiation in small quantities. Apatite (Ca10(PO4)6 (OH, F, Cl)) has been studied for the use of radionuclide confinement. Experimental design was set up to mimic temperatures expected in geologic repositories from 40 to 250℃. Experiments are broken into 2 groups based on iodine species being examined. The first group focuses on iodate (IO3-) which is prevalent under oxidized conditions, and the second handles iodide (I-) …

Research Advancement Of Guayule Resin As A Natural Wood Preservative, Abigael Nasimiyu Laisa

Theses and Dissertations

Increasing concerns about human health and the environment have led to raised demand for eco-friendly wood preservatives. Guayule resin, extracted from Parthenium argentatum plant contains insecticidal and antifungal compounds making it a promising natural wood preservative. This study evaluated suitable carrier system for guayule resin, as well as leaching rate and termite resistance of treated yellow poplar and southern pine specimens. Wood specimens were treated with different concentrations of guayule in acetone, toluene, and ethyl acetate using vacuum impregnation. The leaching behavior and termite resistance of the treated specimens were assessed according to the AWPA Standard E11-16 and AWPA Standard …

The Role Of Enso Diversity In Modulating Tornadic Activity In The United States, Davis Boyd Newton

Theses and Dissertations

Tornado activity in the United States is influenced by large-scale climate patterns, especially by the El Niño-Southern Oscillation (ENSO). While prior research has explored ENSO’s impact on severe weather, the influence of ENSO flavors, Central Pacific (CP) and Eastern Pacific (EP), on tornadic activity remains understudied. Using tornado records, reanalysis data, and sea surface temperature anomalies, we assess how convective available potential energy (CAPE), wind shear, and jet stream dynamics influence tornado frequency and distribution. Results indicate that CP La Niña years had significant increases in tornado frequency, particularly across the Midwest, Central Plains, and Southeast. EP ENSO years had …

Atomistic Modeling Of Mg And Al Systems Using Rapid Artificial Neural Network Derived Interatomic Potential, Edward Omozusi Obasuyi

Theses and Dissertations

Machine learning derived interatomic potentials have proven to be effective tools in simulation that mimic the accuracy of ab-initio calculations to the sub meV/atom level. They offer the advantage of computational speed operating at linear scaling with respect to the system’s size making them more efficient than classical potentials like MEAM (modified embedded atom methods). In this work, interatomic potentials are created based on the rapid artificial neural network (RANN) formalism for magnesium (Mg), Aluminum (Al) and their alloys. From previous works, the RANN formalism produces high-fidelity atomic models with accurate force fields for several metals, offering new insights into …

Earth Analogue Analysis Of Volcanic/Tectonic Interactions With Applications To Venusian Stresses, Michael Ortigoza

Theses and Dissertations

Venus shares many geological similarities with Earth, yet its tectonic processes and magma injection mechanisms remain poorly understood. A key question in planetary geology is how effusive volcanism persists despite the intense horizontal compression terrestrial bodies experience over time. To explore these issues, we examine the Spanish Peaks dike swarm in Colorado which serves as an ideal site for investigating magma intrusion under compressive stress conditions. Through field mapping, orientation measurements, and structural analysis, we identify a strong relationship between pre-existing joints and dike orientations, suggesting that these fractures serve as critical magma pathways in compressive regimes. Additionally, evidence of …

Design And Evaluation Of Hollow Cross-Laminated Timber With Corrugated Cores: A Structural Perspective, Suman Pradhan

Theses and Dissertations

This study investigates the integration of small-diameter trees (SDT) into cross-laminated timber by developing cellular cross-laminated timber (CCLT) with corrugated panels in the transverse mid-layer. This innovation addresses sustainable building material demands while mitigating forest fire risks associated with SDT. The research progressed through three phases. First, parametric linear finite element modelling (FEM) examined corrugated geometry's influence on CCLT flexural stiffness. Based on these findings and manufacturing constraints, an optimal geometry was designed and fabricated. Experimental testing validated the FEM predictions and demonstrated CCLT's superior normalized modulus of elasticity by density compared to conventional cross-laminated timber (CLT). Second, using modified …

Investigations Into Fluorescence Of Fluorene Dimers: Linker Impacts And Tuning Potential Through Substituent Addition, Abigail R. Ressler

Theses and Dissertations

Fluorene-based fluorescing conjugated polymers are being used to develop sensors that show great sensitivity and selectivity, however, important questions about the photophysics of these systems remain unanswered. For example, a fluorescence intensity difference was observed between fluorene dimers linked with either an acetylene (diFA) or phenyl (diFP). The polymers diFA and diFP have similar structures and extinction coefficients, yet diFA yielded a five times higher fluorescence intensity than diFP. In project one, Density Functional Theory (DFT) and Time-Dependent DFT (TD-DFT) were used to calculate the ground and excited states of diFA and diFP. A python code was developed to solve …

Zeroizing Trust In A Naïve Federated Zero Trust Environment, Keith E. Strandell

Theses and Dissertations

The position of the United States on the global stage is predicated on information dominance and the ability to project power through cooperative engagements with mission partners in both wartime and peacetime. Recent cyber-attacks highlighted the need for a more robust cybersecurity posture. As the United States progresses toward the adoption of Zero Trust, it is incumbent on the Department of Defense to assess the impact to the ability to share data across strategic partnerships while securing the data of both the United States and its partners. This paper proposes research into ensuring an environment rooted in Zero Trust and …

Estimation Of Soybean Root Traits Using Computer Vision And Deep Learning, Muhammad Usman

Theses and Dissertations

Root phenotyping provides insights into root structure, function, and response to environmental stimuli, aiding researchers in improving crop yields, developing new plant varieties, and enhancing plant health. Traditionally, measuring root traits, such as length and area, is manual, time-consuming, and resource intensive. This study introduces a deep learning-based computer vision method for soybean root segmentation and traits estimation using RGB (red, green, blue) images captured under controlled illumination. A separate web-based application was also developed that can extract the root length and area using RGB images. A diverse set of 3,363 soybean root images was collected using an in-house root …

Combined Effect Of Chitosan And Lemon Essential Oil-Infused Slush Ice On The Shelf Life Of Channel Catfish, Dianna Wilson

Theses and Dissertations

The objective of this research was to investigate the biopreservative effects of chitosan and lemon essential oil in slush ice treatments on the microbial shelf life of refrigerated catfish fillets. Catfish fillets were stored in slush ice treatments containing chitosan (CH), lemon essential oil (LO), a combination (CH+LO), water (CTRL), and no slush (NS) for three d at 4 C, then stored at 4C for twelve d post-slush. The growth of background microflora in catfish fillets treated with CH and CH+LO was reduced (P<0.05), maintaining total aerobic counts below 4.5 log CFU/g, while the control reached spoilage levels (>7 log CFU/g) by Day 6. Chitosan effectively extended the microbial shelf life but lowered pH, …

Work-Life Balance And The Impact Of Covid-19 On Faculty At Historically Black Community Colleges (Hbccs), Taneshia Turner Winston

Theses and Dissertations

This research study was conducted to determine how the COVID-19 pandemic affected the work-life balance of faculty at HBCCs based on their race, gender, age, marital status, and tenure status. The study employed a quantitative research design utilizing Exploratory Factor Analysis (EFA) to conduct time-based activities separately and group perception-based response variables into meaningful categories to uncover patterns. To analyze the differences in race, gender, age, marital status, and tenure status, Regression and Chi-square test analyses were used to evaluate the collected data. Regression analysis explored relationships between time spent on activities and perceptions of stress, productivity, and satisfaction. Chi-square …

A Framework For Modular Knowledge Composition In Network Intrusion Detection Systems, Patrick L. Day

Theses and Dissertations

Autonomic Intrusion Detection Systems (AIDS) are sophisticated software systems designed to autonomously and adaptively identify and respond to security threats and intrusions in computer networks or systems. One of the fundamental challenges in intrusion detection research lies in the limited availability and scope of publicly available datasets. The proposed research aims to address data-related gaps with autonomic and traditional intrusion detection systems by describing a comprehensive approach to investigate the impact and potential of data augmentation. The goal is to explore various data augmentation techniques, assess their effectiveness in introducing variability, and evaluate their impact on the performance of neural-based …