Digital Commons Network^™

Examining Professional Self-Doubt And Professional Quality Of Life Among Licensed Professional Counselors In Texas, Celia A. Ramos

Theses and Dissertations

Licensed Professional Counselors (LPCs) in Texas frequently navigate emotionally demanding work, including high caseloads, complex client needs, and sustained exposure to client distress. Over time, these professional demands can contribute to stress, emotional fatigue, and job strain, increasing vulnerability to burnout and reducing professional quality of life (Bardhoshi & Um, 2021; Maor & Hemi, 2021; McCarthy et al., 2010; Thompson et al., 2014). This quantitative research study examined the professional quality of life of LPCs in Texas using the Professional Quality of Life Scale (ProQOL) based on gender, ethnicity, age, licensure type, years of experience, does work setting induce compassion …

Electrical Resilience In Water Treatment Plants: An Extreme Weather And Lightning Protection Study, Genesis Martinez

Theses and Dissertations

Water treatment plants (WTPs) are vital infrastructure systems that depend on sensitive electrical, electronic, and control equipment to ensure the continuous supply of safe drinking water and effective wastewater treatment. As global temperatures rise and climate change accelerates, the frequency and intensity of extreme weather events—such as hurricanes, flooding, and increased lightning activity—are becoming more pronounced. These events pose significant risks to the electrical resilience of water treatment facilities, often leading to power outages, equipment failures, grid instability, and prolonged service disruptions. This report explores the impacts of extreme weather, with a particular focus on lightning and electrical surges, on …

Teacher Narratives Of Curriculum Implementation In Bilingual Education: A Vygotskian Analysis, Jose F. Orozco

Theses and Dissertations

This narrative inquiry explores bilingual educators' experiences implementing the Amplify Reading curriculum in a diverse, Title I-funded urban district. As schools adopt standardized curricula, tensions emerge between monolingual standards and the needs of bilingual students. Using a Vygotskian framework with Cultural-Historical Activity Theory (CHAT) and Knowledge Structures (KS), the study examines how teachers navigate systemic contradictions and how these tensions influence their professional identities.

Using an interpretivist approach, data were collected via semi-structured interviews, a focus group, and a researcher’s journal from six experienced bilingual educators. Thematic analysis reveals profound structural fractures within the activity system: a primary contradiction between …

Modeling Causal Interactions Across Brain Functional Systems For Population-Specific Disease Analysis, Alissen Moreno

Theses and Dissertations

Functional brain connectivity provides critical insight into neural mechanisms underlying neurodegenerative and affective disorders. Traditional neuroimaging studies rely on undirected or region-specific connectivity measures developed predominantly using racially homogeneous cohorts, limiting fairness and generalizability across diverse populations.

We propose a population-aware framework modeling directed causal interactions across large-scale brain functional subnetworks. Resting-state fMRI data from the HABS-HD cohort were used to construct subject-level causal connectivity matrices via ICA-LiNGAM, aggregated into interpretable system-level hyper-connectomes representing interactions among eleven canonical brain subsystems. These features trained nonlinear models for Alzheimer’s disease stage classification and trait worry prediction.

Results demonstrate that MLP models outperform …

Investigating Pre-Service Teachers’ Readiness For Early Reading Instruction: A Mixed Methods Study Of Quantified Knowledge In Phonemic Awareness And Lived Experiences, Kristin Morgan

Theses and Dissertations

This dissertation examines the lived experiences of pre-service teachers as they develop their knowledge and instruction skills during a three-week module within their first literacy course in a teacher preparation program. Literacy courses play an important role in equipping pre-service teachers with the knowledge and skills necessary to promote reading development. Research suggests that phonemic awareness is a crucial skill that predicts later reading achievement; however, many teachers lack the necessary experience and knowledge. This gap raises concerns about teacher preparation programs and how pre-service teachers learn. Guided by Vygotsky’s sociocultural theory, this sequential explanatory mixed-methods study sought to understand …

Low-Vision Students’ Experiences With And Suggestions To Improve Desktop Virtual Reality: A Qualitative Study, Tanveer Mansur Syed

Theses and Dissertations

Visually impaired students have faced challenges in the field of education, particularly in science education. Not surprisingly, the unemployment rate for working-age visually impaired people has been above 70%. This persists despite federal laws to support the education and employment of visually impaired people,

Virtual Reality (VR) technology has evolved for several decades. Its use has proliferated in areas that include education. Today, VR science lab simulations are presented as a cost-effective alternative to traditional science labs. Research shows these to be viable substitutes to traditional science labs without a significant drop in learning outcomes. However, this researcher was unable …

Quantifying Noise In Monte Carlo Simulations Of Cosmic Rays In A Shock, Abhro Rahman

Theses and Dissertations

Cosmic rays are a phenomenon known to humankind from the early 1900s, and yet today the details of their physical behavior are not fully settled. While the observed spectral fluxes of cosmic rays follow a power-law trend when plotted against particle energy, the exact mechanisms under which they get to such high energies are still under study. This thesis will undertake a subsection of that task, where the Monte Carlo simulation of particle accelerations is described in Warren (2015), and we aim to identify and quantify the noise inherent in such simulations. This document takes a long path through particle …

Adaptive Artificial Potential Field Guidance And Control For Autonomous Docking With Uncooperative And Unknown Spacecraft, Steven Holmberg

Theses and Dissertations

The increasing demand for on-orbit servicing (OOS), active debris removal (ADR), and space domain awareness (SDA) missions has increased the need for autonomous spacecraft rendezvous and proximity operations (RPO) with uncooperative and unknown targets. Traditional guidance and control methods are typically designed for cooperative systems with known geometry and state information. This work builds on previous research to develop and evaluate an artificial potential field (APF)-based control framework capable of autonomous operation with minimal prior target knowledge and applicability to both relatively static and tumbling spacecraft.

The proposed APF formulation incorporates established safety constructs from cooperative docking systems, including an …

Moodify: A Mood-Based Music Recommendation System, Meghana Kagitha

Theses and Dissertations

Music has long been recognised as a powerful tool for emotional regulation, yet existing music streaming platforms often fail to align song recommendations with a user's current emotional state. Moodify is a mood-based music recommendation system designed to bridge this gap by delivering personalised playlists that reflect how a user feels in real time.

This project presents the design, development, and evaluation of Moodify, a mobile application that leverages the Circumplex Model of Emotion to capture user mood through an intuitive two-dimensional valence-arousal interface. Rather than relying on text input or manual search, users plot their emotional state directly onto …

Porous Hydrophobic Adsorbent Coatings For Carbon Dioxide Capture, Samuel Babatunde Olushola

Theses and Dissertations

This work presents the development of a porous, hydrophobic zeolite 13X coating for the separation of carbon dioxide (CO₂) from flue gas or natural gas. Zeolite 13X was combined with yeast, glucose, and sodium alginate as pore-forming agents, and with polytetrafluoroethylene (PTFE) and Polydimethylsiloxane (PDMS) as hydrophobicity-inducing agents to enhance water resistance while maintaining CO₂ access to the adsorbent. The study explored PTFE/13X mass ratios ranging from 0 to 2.33 to investigate the interplay between hydrophobicity and CO₂ uptake. The wettability of the coating was characterized by using a temporal water contact angle (WCA) measurement. Increasing …

What Happens When Leaders Don’T Live Up To The Ideal? How The Leadership Perception Gap Can Undermine Leader Development And Intentions, Julia Macgregor-Peralta

Theses and Dissertations

Despite decades of research on leadership development, we know surprisingly little about why capable, confident people choose not to pursue leadership. This study introduces the Leadership Perception Gap (LPG), a construct that captures discrepancies between ideal leader views and the leaders people actually observe, and tests whether those discrepancies reduce the desirability of leadership roles. LPG was assessed using latent congruence modeling (LCM) to compare ideal leader ratings with vignette-based leader evaluations. The vignettes manipulated leadership style (agentic, communal, balanced) and team composition (all-male, all-female, balanced). Participants were randomly assigned to one condition and evaluated their interest in joining the …

Manned Exploration Of Satellites Of The Outer Planets: An Analysis Of Current Technologies And A Discussion Of Advancements Required, Joshua Carson Meador

Theses and Dissertations

The Solar System’s outer planets have many satellites, some of which are known to be the most likely places to find extraterrestrial life in our celestial backyard. Multiple scientific missions have been sent to glean information from these satellites, yet the possibility of a manned expedition has long been exclusive to science fiction stories. This paper intends to collect and analyze the current state of space travel technology to explore the feasibility of such a mission with modern technology and to discuss which future advancements should be the focal point for making such missions a reality. To begin, data on …

Range Extension Of Electric Propulsion General Aviation Aircraft Using Solar Technology, Mary Kathryn Shultz

Theses and Dissertations

Alternative propulsion technologies in aviation have been a long-time topic of interest as operators aim to bypass growing fuel prices and meet environmental sustainability requirements set globally. Research regarding alternative propulsion technologies is primarily centered around marginally improving efficiency of combustion systems or large-scale implementation of novel technologies. This research evaluates the feasibility of implementing solar-integrated propulsion for general aviation aircraft to extend range through a comparison of full-electric, hybrid solar, and internal combustion engine propulsion systems. This evaluation of existing technology by range analysis indicates that hybrid solar‑electric propulsion is viable primarily for short‑range training and recreational aircraft, rather …

An Experimental Study On Turbine-Based Energy Harvesters For Thermal Underwater Gliders, Stephen Edward Coster

Theses and Dissertations

Buoyancy-driven underwater gliders have been optimized for long-duration missions primarily for continual monitoring of the ocean’s water column. However, longer missions and higher-powered sensors have increased the energy requirements of gliders. While current solutions aim to increase battery capacity, the development of energy-harvesting systems (EHMs) could greatly improve mission capabilities in both ability and duration. This thesis discusses the experimental testing of an underwater glider with an EHM as detailed in the theoretical study, “Development of a Turbine-Based Ocean Thermal Energy Harvesting Mechanism Applied to the Underwater Glider” by Hongbo Hou, PhD. The rear-mounted turbine captures energy using the kinetic …

Design And Simulation Of Anti-Resonant Hollow-Core Fiber For Sensing Applications, Pravallika Kante

Theses and Dissertations

This thesis presents the design and simulation of an 8-tube single-ring anti-resonant hollow-core fiber for sensing applications, with particular emphasis on methane gas detection at the fundamental absorption wavelength of 3.3 µm. Conventional solid-core silica optical fibers exhibit strong multi-phonon material absorption beyond 2.5 µm, rendering them fundamentally unsuitable for efficient light guidance and direct gas sensing at mid-infrared wavelengths. Anti-resonant hollow-core fibers overcome this limitation by guiding light predominantly through an air-filled hollow core via the anti-resonant reflecting optical waveguide mechanism, in which the thin silica glass walls of the cladding tubes act as Fabry-Pérot etalons that confine the …

Impact Of Multicultural Literature Through Reader's Response, Rachel Konrad

Theses and Dissertations

The purpose of this study is to examine how students respond to using five multicultural read aloud texts and responding to them in a response. The goal of this study was to see if student engagement improved as a result of the study and if student comprehension improved through the use of pre and post assessments. Student data was collected that included a pre and post assessment, anecdotal records of student discussion, responses to texts, and student and parent surveys. Students discovered and discussed themes across texts such as cultural identity, community, and belonging.

The Impact Of Mentor Text On Second Grade Writing, Brittany A. Still

Theses and Dissertations

The purpose of this study was to (a) ascertain the effect mentor text had on student engagement and (b) determine the impact mentor text had on student writing style. Students utilized strategies from five mentor texts during the writer's workshop to write their own personal narratives. Students demonstrated increased engagement through class discussions following each read aloud. Writing style was impacted as students implemented different writing elements into their own writing based on the mentor text discussed. Implications for teaching writing are discussed.

Foreign Language Experience Effects On L2-Accented Speech Attitudes In College Students, Jordan L. Ellington

Theses and Dissertations

The purpose of the study is to test whether knowledge of a second language in college students can affect perceptions and prejudices towards speakers with foreign accents. The testing was completed through both implicit and explicit attitudinal measures in regard to recorded audio stimuli. The explicit attitudinal testing was performed through participant self reporting of attitudes. Participants were presented with first (L1) or second (L2) language accented English samples and then rated that speaker in terms of various characteristics or traits that represented the speaker's solidarity and status. The implicit testing was performed in an Auditory Implicit Associations Test on …

Preserving The Untold Stories: Leveraging Emerging Technologies (Ai And Machine Learning) For Archiving Hidden Histories Of Children And Families Impacted By The Little Rock School Integration Crisis, Oluseyi Noah Adebanjo

Theses and Dissertations

This thesis challenges the dominant narrative of the Little Rock School Integration Crisis by recovering the hidden histories of families and siblings who made integration possible but have been systematically overlooked by historians. While existing scholarship focuses on the Little Rock Nine as individual heroes, this research demonstrates that integration was fundamentally a family crisis requiring collective decision-making, economic sacrifice, and multigenerational support networks. Through close reading of published memoirs, newspaper clippings, school board minutes, and original oral history interviews with Phyllis Brown and Dr. Sybil Jordan Hampton, this study reveals how approximately 200 eligible families were systematically reduced to …

Recognizing Metaphorical References To Sexual Assault Resistance And Represented Rape Myths In Coraline (2009), Braden Slater

Theses and Dissertations

Is there any value in children’s horror literature and film? Literary theorists have shown that children’s horror is uniquely positioned to be not only captivating and accessible, but also educational and hopeful for some young audience members. Like most fictional monsters, those presented in children’s horror can be read as metaphors for the fears and experiences people face in real life. Scholars have argued that engaging with this type of frightening media may help people confront challenging ideas and feelings from a place of safety. Building on this theoretical foundation, I perform a close reading of the 2009 film Coraline, …

Advanced Studies In Characterization Of Pyrolysis Products From Live Vegetation, Mahsa Alizadeh

Theses and Dissertations

Fire is a naturally occurring element in many ecosystems which can have both positive and negative effects. However, in recent years the frequency of the fires and the area they affect has increased. The rapid spread of wildland fires coupled with the limited resources available to forest services to manage wildland fires highlights the urgency for accurate prediction of fire spread. Fire prediction models enable the fire management services to predict the spread of fire and prioritize firefighting efforts more effectively. Understanding reactions and mechanisms occurring during wildland fires improves the fire prediction models. During wildland fires, the biomass covering …

The San José De Laguna Mission: Christian Iconography Through The Lens Of Pueblo Oral Traditions, Natalie Sims Rasmussen

Theses and Dissertations

The San José de Laguna Mission was constructed in 1699 in modern New Mexico. Following on the heels of the second Pueblo revolt, it stands as a testament to the Pueblo adoption of Christian symbols in the portrayal of their own oral traditions. A central theme in the Laguna oral tradition is the complementary nature of masculine and feminine forces that make up the universe. The Christian figures of the altar screen, such as Saint Joseph, Saint John Nepomuck, Saint Barbara, and the Trinity, can be interpreted through the lens of the Pueblo oral tradition regarding a 19th century Laguna …

Differentiable Objectives For 3d Scene Relighting Via Gradient Descent On Olat Basis Coefficients, Anson Savage

Theses and Dissertations

Designing effective lighting is an iterative and often time-consuming process. This work contributes to automatic lighting design research by presenting a render-engine agnostic optimization routine: gradient descent on RGB multipliers of one-light-at-a-time (OLAT) basis images. We compare several objective functions to accomplish lighting tasks and show that our method is capable of quickly and effectively exploring different lighting styles using either text prompts or reference images. We also present several datasets specific to lighting tasks and show that fine-tuning on these datasets can improve performance.

Liminality And Space In The Iliad And The Heike Monogatari, Jade Simmons

Theses and Dissertations

Both the Iliad and the Heike monogatari have received scholarly attention throughout the years, though rarely in comparison with one another. A few scholars, such as Tyler Creer and Naoko Yamagata, have attempted to examine the two side by side, but very little work has been done beyond their respective analyses. This is unsurprising as a cursory glance at the two texts suggests that they are too separated by time and space to warrant closer examination. I argue, however, that there is great value in analyzing the two side by side. Indeed, a closer look at these texts reveals that …

Gratitude And The Second Language Writer: The Effects Of Gratitude Journaling In The English Language Writing Classroom, Lauren Smith

Theses and Dissertations

Gratitude journaling interventions have repeatedly been shown to enhance wellbeing when conducted in participants’ first language (Emmons & McCullough, 2003; Sansone & Sansone, 2010), yet no studies to date have examined these practices in second language (L2) contexts. This mixed-methods quasi-experimental study investigated the effects of a six-week gratitude journaling intervention on adult L2 English writers enrolled in an intensive English program. Eleven writing classes (N = 183) were randomly assigned to either a gratitude journaling group or a neutral-events control group, with 123 participants completing all four stages of data collection. Trait gratitude and subjective wellbeing were measured pre-intervention, …

Exploring Subject-Verb Agreement Challenges Among Third-Grade Portuguese Dual Language Immersion Students: A Mixed-Methods Study, Marisa Tobias

Theses and Dissertations

Dual Language Immersion (DLI) programs are commonly recognized for supporting the development of oral proficiency; however, persistent challenges with grammatical accuracy, particularly subject-verb agreement, remain common among elementary-aged learners. This mixed-methods study focuses on third-grade students in a Portuguese DLI program and examines how they use present-tense verb forms in different classroom contexts. Drawing on classroom observations, instructional materials, and students’ oral and written production, the study analyzes the nature of the input learners receive and the types of errors that persist during oral communication. Findings indicate that students demonstrate greater accuracy during structured tasks, while difficulties with subject-verb agreement …

Mcgehee Blow Up And Collision Manifold Of Planar (2+2)-Body Problem, Nathaniel Scott Sill

Theses and Dissertations

This thesis analyzes the dynamics of the Planar (2+2)-Body Problem which consists of two asteroids moving under the gravitational force of each other and of two larger primaries. We use the McGehee blow up technique to remove the singularities in the dynamics associated with a triple collision with one of the primaries by introducing a new set of variables. Additional variables are introduced to reduce the dimension of the problem. We then derive the dynamics for these new variables. We then use the energy relation that comes from the original Hamiltonian to describe the collision manifold which is pasted in …

Maximizing Uinta Basin Oil Well Yield Through Geochemical Fingerprinting Of Produced Water, Troy W. Day

Theses and Dissertations

The Uinta Basin is an unconventional oil play that has, since 2017, annually increased hydrocarbon extraction through modern drilling and fracing techniques with increased frac loading. The primary production target is the Uteland Butte Member of the Green River Formation, which consists of interbedded limestones, dolostones, and thick, organic-rich mudstones. Along with increased hydrocarbon production, volumes of produced water from the Uteland Butte Member have also risen. Water is co-produced with hydrocarbons and is an undesirable byproduct of hydrocarbon extraction. Large frac operations now consistently have highly variable percentages of recovered water volume relative to oil. This increase in water …

Improving Electrochemical Measurements And Informing Future Reprocessing Of Advanced Nuclear Fuels, J. Marvin Torrie

Theses and Dissertations

This research promotes the application of molten salts through developing analytical tools in electroanalytical studies and in the data analysis of vapor pressure data. The electrochemical community lacks standardized, stable, and repeatable reference electrode designs which threaten the reliability of measured thermophysical properties and repeatability of published studies. This work confirms the application of a saturated reference electrode design for molten chlorides systems that outperforms traditional Ag+/Ag reference electrodes. In the field of thermal physical property measurements, vapor pressure data for chloride salts are diffused throughout the literature, uncertainty quantification is absent or limited, and all previous studies rely on …

These Wretched Waters: A New Perspective On The Myth Texts And Visual Adaptations Of The Danaids, Tessa Haney

Theses and Dissertations

Both Greek and Latin texts regarding the Danaids are rife with gestational imagery and vocabulary. This textual focus on chthonic, symbolic aparturience coheres with both Greek and Roman perceptions of femininity. Women in both cultures were socially mandated to marry, have children, and confine themselves to the domestic sphere. The Danaids’ refusal to participate in this system would have been viewed as a breach of cosmic order, and a punishment that grounded the sisters in their 'traditional’ femaleness would have been viewed as a solution to such a breach. While early modern visual adaptations of the Danaid myth lack gestational …