Digital Commons Network^™

Implementing Dataops: A Scalable Framework For Modern Data Warehousing, Dmytro Valiaiev

Theses and Dissertations

DataOps has been coined as a novel term that emerged as a synthesis of data management practices with software engineering concepts, such as DevOps and Agile, with the goal of improving data quality and governance in enterprises. The proliferation of scratch table use and transformation tools, such as dbt, has led to an exponential increase in the number of data models, which complicates standardization efforts and increases maintenance overhead. Although the market is saturated with various flavors of text-to-SQL engines that promote increased productivity and self-service use in organizations, there are limited tools available to optimize individual queries, enforce consistency, …

In Their Own Voice: A Grounded Theory On Overcoming Internet Gaming Disorder, Jayson Carmona

Theses and Dissertations

Internet Gaming Disorder (IGD) is highly comorbid with depression, anxiety, sleep loss, lower productivity, and social isolation. The DSM-5 TR designates IGD as a condition for further study, however the ICD-11 has designed Gaming Disorder as a codified illness. While most studies look at IGD via a medical model lens focusing almost exclusively on symptomology, very little research explores the process of recovery in IGD. In this grounded theory inquiry, a theory of recovery from IGD is generated. Secondary internet data consisted of 113 posts on the subreddit /r/StopGaming on reddit.com. This resulted in 196 pages of data. Researcher used …

Exploring Adjunct Faculity Member Acceptance To Learning Management Systems When Transitioning To Online Course Instruction: A Traditional Case Study, Maryelizabeth Mcardle

Theses and Dissertations

In recent years, the typical college student wearing a university sweatshirt and holding a backpack has evolved to include a rising population of adult learners returning to college (Morris, 2020). According to the Educational Advisory Board, adult learners are defined as students aged 25 and older (Morris, 2020). Of the approximately 20 million students enrolled in a degree-earning program in 2019, nearly 6.5 million were adult learners (Morris, 2020). The purpose of this qualitative case study is to understand adjunct faculty members' experiences, which led to positive intentions to use and actual usage of the LMS when assigned to instruct …

Ecological Drivers Of Habitat Selection And Maternal Survival In Female Mule Deer (Odocoileus Hemionus), Brady R. Knight

Theses and Dissertations

Understanding the ecological and biological factors that influence habitat selection by mule deer (Odocoileus hemionus) is crucial for effective management. Mule deer select cover, forage, and water, each critical to energy acquisition and survival of mule deer. Here, we evaluate the factors that influence habitat selection and reproductive decisions by mule deer . In chapter one we evaluate the influence of treatments to restore quaking aspen (Populus tremuloides) on habitat selection by mule deer. We hypothesized that mule deer would not use habitats randomly because of variability in nutrition and perceived risk of predation. We predicted that areas with aspen …

Mitochondrial Insoluble Aggregates In Aging And Alzheimer’S Disease Models: Cross-Species Proteomic Integration, Identification Of Conserved Candidates, And Pharmacological Disruption Of Eef-2 Interactions, Sonu Pahal

Theses and Dissertations

Protein aggregation within mitochondria emerges early in both aging and Alzheimer’s disease (AD) and contributes to progressive loss of proteostasis. Insoluble mitochondrial aggregate fractions from Caenorhabditis elegans revealed extensive enrichment of metabolic and translational proteins that also appear in human Alzheimer hippocampal aggregates. Comparative analysis across age and genotype identified a conserved subset of aggregation-prone proteins, several of which cluster around elongation factor 2 (eEF-2), a regulator of ribosomal translocation and energy coupling. Cross-species integration defined a network in which eEF-2 links chaperones, metabolic enzymes, and RNA-binding proteins that co-aggregate in both human Alzheimer material and nematode models. Functional tests …

Unveiling The Genomic Blueprint Of Two Pantoea Agglomerans Phages: Lia And Yaegar As Emerging Members Of The Chaseviridae Family, Leslie M. Ewool

Theses and Dissertations

Bacteriophages represent an essential component of microbial ecosystems and a promising resource for biocontrol. This study presents a comprehensive comparative genomic and evolutionary characterization of two novel bacteriophages that infect Pantoea agglomerans, Lia and Yaegar, belonging to the Loessnervirus genus within the Chaseviridae family. Both Lia and Yaegar possess double-stranded DNA genomes of approximately 54 kb with 44.4% GC content and 82 predicted open reading frames (ORFs). Functional annotation revealed distinct modules for replication, structural assembly, and lysis, but no genes associated with lysogeny, antibiotic resistance, or virulence. Average nucleotide identity (ANI) analysis indicated over 96% similarity between Lia, Yaegar, …

Toward Understanding Multi-Agent Decision Making In Complex Societies, Jonathan Skaggs

Theses and Dissertations

This dissertation investigates Multi Agent Decision Making (MADM) within Complex Societies (CS), systems of interdependent agents whose collective behaviors emerge from local interactions. Such emergent dynamics are nonlinear and difficult to predict, posing significant challenges towards understanding how individual decisions scale to societal outcomes. Existing approaches often fall short of capturing the combined attributes of CS, including asymmetry, decentralization, and adaptivity. To address this gap, we introduce new models and analyses of agent strategies that explain how cooperation and stability can arise in CS. Structured around three interrelated projects, this dissertation enhances our comprehension of MADM in CS. The research …

Finding Black Joy: Understanding How Black Students Are Seen, Affirmed, And Nourished In Expanded Learning Opportunities., Jamila Mosley

Theses and Dissertations

This dissertation examines how Black students experience Black joy within expanded learning opportunity (ELO) programs and how those programs are structured to nurture that joy. It is guided by the central research question: How do Black students describe the ways in which an expanded learning opportunity program fosters their joy through experiences of being seen, affirmed, and nourished? Using an instrumental case study design at two secondary schools, the study draws on semi-structured interviews, focus groups, and observations of students participating in robotics, debate, Sister Circle, cheer, basketball, and creative writing. Data were analyzed through multiple cycles of coding, first …

Towards Resilient Data Governance: An Industry Study On Practitioner Perspectives On The Current State Of Data Governance, Anthony Mazzarella Iii

Theses and Dissertations

Experts agree that data governance is crucial for managing data as an asset, yet in practice, it remains inconsistently defined, unevenly implemented, and poorly understood. Earlier industry studies offered valuable descriptive benchmarks of governance adoption and professional roles, but provided limited theoretical insight and little empirical evidence explaining how governance functions within organizations. Building on this foundation, the current research offers a more substantial and analytically rigorous contribution by transforming descriptive observations into empirical explanations. Through a collaborative academic–industry partnership, the study utilizes a global survey of 565 respondents (348 valid cases) to analyze governance structures, motivations, challenges, and the …

Exploring The Growth Dynamics Of Streptococcus Mutans In Diverse Environmental Conditions, Vanessa Escudero

Theses and Dissertations

Dental caries, a prevalent oral health issue, is primarily associated with the growth of Streptococcus mutans, a Gram-positive bacterium that grows under various oral environments. The primary objective of this study was to evaluate the impact of different beverages and mechanical cleaning on the growth of S. mutans, which plays a crucial role in tooth decay. Using a nano-spectrophotometer we analyzed bacterial growth by constructing growth curves under different conditions, including exposure to cranberry juice, Hawaiian juice, and mechanical brushing.

The study was designed to mimic real-world oral conditions by testing S. mutans in four distinct environments. First, we established …

History Of Midwifery In Arkansas: The Attrition Of Midwifery, Koria T.L. Robinson

Theses and Dissertations

Over the past few years, Arkansas has gained a spotlight due to an increase in maternal and infant mortality. This increase has been so massive that Arkansas has ranked within the top five in the nation for maternal and infant mortality rates for several years. A large percentage of the maternal and infant deaths in Arkansas are prevalent in the Black and rural communities. This is an issue that has plagued the state of Arkansas for over a hundred years, with mortality rates highly affecting the same demographic of people. How did the practice of midwifery become a remedy for …

Elucidating The Oxidation Mechanisms In Cr2alb2 Using Density Functional Theory And Thermodynamic Modeling, Ushan Asela Adhikarige

Theses and Dissertations

This thesis investigates the oxidation behavior of Cr2AlB2 surfaces using density functional theory calculations combined with thermodynamic modeling. Our analysis encompassed surface stability assessments, oxygen adsorption studies on various surfaces, and thermodynamic insights into oxidation mechanisms. Surface stability assessments reveal that the (010) surface terminated with an Al layer exhibits the lowest surface energy. Oxygen adsorption studies on the (010), (111), and (021) surfaces demonstrate strong dissociative adsorption with binding energies ranging from -4.72 to -4.22 eV depending on coverage. Thermodynamic analysis shows that elevated temperatures reduce oxidation favorability, while increased oxygen partial pressure enhances it. The study reveals that …

A Space Propulsion Concept Based On Inertial Confinement: Exploring Nuclear Fusion Utilizing Polywell Geometry, Preeti Nair

Theses and Dissertations

Nuclear fusion propulsion represents a promising solution for future interplanetarymissions due to its high energy density and potential for continuous power generation. However, existing fusion propulsion systems face significant limitations, particularly in achieving stable plasma confinement. The Polywell concept, introduced by physicist Robert Bussard in 1985, offers advantages through its compact, polyhedral geometry that is wellsuited for spacecraft applications where mass and volume constraints are critical. Despite these advantages, Polywell designs have encountered stability challenges in maintaining the electric potential well over time. Plasma instabilities induced by magnetic fields disrupt containment and reduce fusion efficiency, limiting overall performance and scalability …

Integrated Machine Learning For Predicting Reservoir Properties And Experimental Approach For Evaluating Co2-Brine-Rock Interactions In Carbonate Formations, Luc Yvan Nkok

Theses and Dissertations

Understanding subsurface properties is fundamental for optimizing hydrocarbon recovery and ensuring the long-term integrity of carbon capture and storage (CCS) operations. Conventional methods such as empirical correlations, advanced logging, and laboratory measurements, though widely used, are costly, time-consuming, and often limited in accuracy within formations. This study develops an ML framework to enhance the prediction of petrophysical and geomechanical properties and experimental investigation to evaluate time-dependent alterations in petrophysical and geomechanical rock properties under CO₂-brine exposure.In the first phase, six ML algorithms Decision Tree, Random Forest, Extra Trees, XGBoost, LightGBM, and K-Nearest Neighbor were applied to predict key petrophysical parameters …

A Climatology Of Northern Plains Tornadoes With Regard To Radar Coverage, Charles Richie Ii

Theses and Dissertations

Tornadoes are among the costliest and deadliest severe weather events in the United States. Doppler weather radar is one of a meteorologist’s most useful tools for early detection of tornadoes. However, there are several notable areas across the Northern Plains (Minnesota, Montana, North Dakota, and South Dakota) where the National Weather Service’s (NWS) radar coverage exceeds 10,000 feet above radar level, leaving an effective “radar gap” where tornado detection becomes increasingly challenging, if not impossible in some cases. Even within these radar gaps, the NWS is still responsible for issuing Tornado Warnings to fulfill their mission of protecting life and …

Culture-Dependent Characterization Of Microbial Succession And Persistence In The Integrated Lunar/Martian Analog Habitat (Ilmah), Haley Olivia Boles

Theses and Dissertations

This study examines culture-dependent microbial monitoring in a closed lunar/Martian analog habitat, focusing on viable community dynamics relevant to long-duration missions. A standardized sampling and cultivation pipeline was implemented in ILMAH to track microbial succession and persistence under realistic operational conditions. Surface samples were collected across eight habitat zones at five mission timepoints (Days 0, 5, 10, 15, 20) during a 21-day crewed mission. Samples were concentrated post-collection and plated on chromogenic film media to quantify total aerobic bacteria (AC-R), fungi (YM-R), E. coli (EC), and S. aureus (SA). Plates were imaged and enumerated digitally; representative colonies were isolated and …

Impacts Of Intensifying Wildfires On Boreal Forest Ecosystems: Exploring Forest Regeneration, Wildlife Habitats, Carbon Storage, And Engineering Solutions, Mckenzie Belle Schewe

Theses and Dissertations

Wildfire activity across Alaska’s boreal forests has intensified in severity and frequency in recent decades, altering one of Earth’s most significant sources of carbon sequestration (Pan et al, 2011). This thesis examines how wildland burns influence post-fire carbon sink capacities and vegetation recovery near Fairbanks, Alaska. Three fire sites were selected to represent distinct successional stages: the 2006 Parks Highway Fire, the 2013 Stuart Creek 2 Fire, and the 2022 Clear Fire. Each site was evaluated through a combination of remote sensing analysis, LiDAR-derived canopy height data, and field measurements collected within each burn perimeter, developing a replicable framework for …

Beyond Binaries, Bridging Divides: Centering Identity, Resistance, And Educational Justice Along The Texas-Mexico Border. A Critical Autoethnography Of Underrepresented Intersectionality, Invisibility, And Transformation In Education, Alexander Hernandez

Theses and Dissertations

This dissertation employs solo autoethnography and counter-storytelling to examine how intersecting identities, queer, neurodivergent, bilingual, and fronterizo, shape lived experiences within U.S. educational spaces along the Texas–Mexico border. Grounded in Critical Race Theory as a historical foundation and guided by the braiding logic of Intersectionality (Crenshaw, 1989), the study integrates Latino Critical Race Theory (LatCrit), Disability Critical Race Studies (DisCrit), and Queer Theory to analyze how race, language, ability, and sexuality converge within systems of schooling.

Using memory-work, poetic autoethnography, and narrative vignettes as primary data, the dissertation traces how educational institutions discipline identity through racio-linguistic policing, behavioral surveillance, and …

The Lived Experiences Of School Counselors, Job Burnout, And The Blurred Lines Of The Profession, Cecilia Angelica Gomez

Theses and Dissertations

This phenomenological qualitative study explores the lived experiences of school counselors during and after the COVID-19 pandemic, focusing on job burnout, role ambiguity, and the blurred lines of the profession. Through semi-structured interviews with practicing school counselors, the study identifies common themes including role overload, manifestations of burnout, coping and resilience strategies, and the impact of administrative support. Findings highlight the systemic factors contributing to counselor stress and the importance of self-care, peer collaboration, and role clarity for counselor well-being and student outcomes.

Feed Network Design For Passive Beamforming In Hemispherical Phased Arrays, Daniel Flores

Theses and Dissertations

This thesis presents the design, fabrication, and evaluation of a four-element microstrip patch antenna array with a passive 1 to 4 corporate feed network operating at 5 GHz. A single inset-fed patch was developed on Rogers DiClad 880 to ensure accurate tuning and mechanical flexibility, achieving a measured resonance of 5.009 GHz with excellent return loss. The corporate feed network, synthesized using T-junction dividers and quarter-wave transformers, demonstrated strong impedance matching, balanced amplitude distribution, and broadside realized gain near 10 dBi when integrated with the array.

Beam steering was examined through simulation-based phase control, revealing effective scanning up to approximately …

Computational Expressions Of Void Reactions In Extended Chemical Reaction Network Models, Aiden J. Massie

Theses and Dissertations

Chemical Reaction Networks (CRNs) are a system of abstraction of real-world chemical dynamics. Each CRN system is defined as a pair of molecular species and reaction rules, which consume a set of reactant species and create a new set of product species. In this paper, we investigate the simple class of void reactions, which cannot create new species and are computationally weak with small-enough sizes in basic CRNs. Here, we study their computational expression in more powerful extended CRN models. Specifically, we consider the Step CRN model, in which new species are added into the system through a sequence of …

Investigating The Impacts Of Facial Gestures On Global Participants’ Perception Of The Speaker, Perception Of The Message, Emotional Responses, And Engagement During Video Conferencing, Hanan Mohammed Alghamdi

Theses and Dissertations

Facial expressions play a crucial role in shaping communication and emotional understanding during virtual interactions. This study investigated how facial expressions influence participants’ perceptions of the speaker, perceptions of the message, emotional responses, and engagement during video conferencing across diverse cultural contexts. A hybrid experimental design was implemented using self-administered questionnaires to collect quantitative data and examine cause-and-effect relationships. Participants were randomly assigned to one of three facial-expression conditions Positive (smiling and joyful), Negative (angry or nervous), or Neutral (expressionless) and viewed speakers representing three ethnic backgrounds: White American, Black American, and Middle Eastern. Using a seven-point semantic differential scale, …

Experimental And Computational Insights Into Reservoir Rock Mechanics And Petrophysical Properties, Prasad Pothana

Theses and Dissertations

This dissertation investigates the influence of stress, mineralogy, and microstructure on the elastic and transport properties of reservoir rocks. A multi-scale framework integrating laboratory measurements, petrophysical inversion, and discrete-element simulations is developed to quantify the stress-dependent behavior of heterogeneous sedimentary formations relevant to hydrocarbon production and CO2 sequestration.

Core-scale experiments quantify velocity–effective stress and permeability–effective stress relationships in tight siliciclastic and mixed lithologies. Results demonstrate that pore-throat collapse and microcrack closure under confining stress cause systematic reductions in permeability and acoustic velocities. The derived empirical functions provide predictive capability for estimating in-situ stress effects on reservoir performance and time-lapse seismic …

Road Surface And Subsurface Monitoring Using Machine Learning, Koduah Amoako

Theses and Dissertations

This thesis presents a comprehensive, non-invasive framework for real-time monitoring of road surface and subgrade conditions using acoustic sensing and machine learning. Traditional Tire-Road Coefficient of Friction (TRCF) estimation techniques often rely on intrusive sensors, offline data analysis, or laboratory measurements, making them impractical for real-time applications. The present research introduces an alternative approach that utilizes the acoustic emissions generated by tire-road interaction to infer both surface friction and subsurface integrity dynamically.Measurement microphones were mounted beneath a test vehicle to record tire-road noise signatures across different pavement textures and vehicle speeds. The collected acoustic signals were processed using Fast Fourier …

Spaceflight Safety Regulations: The Case For Implementing Safety Management Systems In The Developing U.S. Commercial Human Spaceflight Industry, Carly Davidson

Theses and Dissertations

Accidents have historically accompanied the development of new transportation systems, often due to technical failures; but human factors – such as organizational culture and management decisions – are increasingly recognized as significant contributors. A strong safety culture, prioritizing safety at all organizational levels, effective management procedures, and open reporting of violations, is believed to improve outcomes by proactively reducing risk in highly technical organizations. These elements form the basis of Safety Management Systems (SMS), which include safety policy, risk management, assurance, and promotion. As commercial spaceflight expands public access to space, US regulators must develop flexible safety regulations that protect …

Resistance Through Policy: Documenting Lgbtq+ Advocacy In Public Education, Rhys Mitchell Fryar

Theses and Dissertations

This research examines how educational policies related to LGBTQ+ students are constructed, interpreted, and implemented across federal, state, and district-levels. It asks whether institutional intent reflects authentic commitment to equity or functions as symbolic compliance in politically contested environments. Using Portland Public Schools (PPS) as a case study, the analysis situates the district within Oregon’s affirming policy landscape and the Trump administration’s restrictive federal mandates. PPS has adopted policies, such as Administrative Directive 4.30.061 AD (2023b) and the Gender Identity Support Guide (2023a), to support queer and gender-expansive students; however, it faces a federal investigation (U.S. Department of Education, 2025b, …

Cross Cancer Toxicogenomic Modeling Of Arsenic Exposure Identifies A Four Gene Signature For Lung Cancer Risk, Joshua Kennedy

Theses and Dissertations

Arsenic is a naturally occurring carcinogenic element linked to DNA damage via reactive oxidation and epigenetic alteration that is ubiquitous throughout nature and has been associated with oncogenesis in the lungs, bladder, skin, and liver. Lung Cancer is both the most diagnosed cancer worldwide and the deadliest, comprising approximately 12.4% of all cancers globally and contributing to more human cancer death than any other condition, with roughly 90% of cases arising due to tobacco smoking, which exposes the user to arsenic trioxide and synergistic carcinogenicity when exposure includes both smoking and consumption of arsenic-contaminated drinking water. A novel set of …

Thermal Desorption-Pyrolysis Gas Chromatography-Mass Spectrometry Method Development For The Determination Of Wood Preservatives, Nafisa Bala

Theses and Dissertations

A thermal desorption-pyrolysis gas chromatography with mass spectrometric detection (TD-Pyr-GC-MS) method was developed, enabling a comprehensive analysis of preservatives as well as native wood constituents in treated wood. The developed method is based on thermal desorption, i.e., extraction of wood preservatives, followed by pyrolysis to investigate changes in the occurrence of characteristic wood building blocks (e.g., guaiacol derivatives). We implemented a combined MS data acquisition (i.e., SITI) consisting of selected ion monitoring (SIM) and total ion current (TIC), allowing for low limits of detection of preservatives in SIM mode and TIC detection of any evolving species. The matrix detection limits …

Identity Formation Through The Lived Experiences Of Immigrant Muslim High School Students, Badera Muhanna

Theses and Dissertations

The growing number of Muslim students enrolled in U.S. public schools necessitates a more comprehensive understanding of their unique experiences within their educational environments. This phenomenological qualitative study investigated Muslim students' perceptions of their lived experiences in a high school in the Northern Great Plains of the United States. Six Muslim students in their junior and senior years were selected to participate in semi-structured interviews. Through the lens of Bronfenbrenner’s ecological systems theory, this study aimed to deepen understanding of how Muslim students develop their sense of identity and the factors that contribute to this development. The findings revealed that …

Of Birds And Beef: Expanding The Knowledge Of Rotational Grazing Systems On Grassland Bird Productivity In North Dakota, Taylor James Linder

Theses and Dissertations

Cattle grazing is one of the main economic contributors driving grassland ecosystem existence across the landscape. Cattle grazing can impact a variety of aspects of grassland ecosystems functions, including which wildlife species use them and in what ways. Given the drastic declines in grassland passerines, it is especially important to understand how different grazing practices affect critical population metrics such as reproductive success, clutch size, and number of fledglings. There is a wealth of research on grassland passerine reproductive in response to grazing systems throughout North America; however, most of the existing literature studies more traditional, longer rotational (LR) grazing …