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High-Performance Cathode Design for Rechargeable Lithium-Sulfur Batteries and In-situ Investigation of Lithium Polysulfide Conversion under Extreme Conditions

Description: Lithium-sulfur batteries (LSBs) demonstrate a potential to be the next-generation energy storage systems due to the high theoretical capacity and energy density of sulfur cathode, in addition to low-cost natural abundance, and environmentally benign characteristics of sulfur. However, the insulating nature of sulfur requires an efficient conductive and porous host material such as three-dimensional carbon nanotubes (3D CNTs) to provide efficient electron pathways and short Li-ions diffusion len… more
This item is restricted from view until August 1, 2025.
Date: July 2023
Creator: Adhikari, Pashupati Raj
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Transformative Professional Learning for Bilingual Education Leaders

Description: This dissertation explores the impact of culturally and linguistically sustaining practices (CLSP) on professional learning for bilingual education leaders in North Texas. Utilizing a decolonizing interpretive research framework, this participatory action research study brings together a purposively selected cohort of five bilingual Latine educational leaders to engage in professional learning and enhance their understanding and implementation of CLSP within bilingual programs. The purpose of t… more
This item is restricted from view until January 1, 2026.
Date: December 2024
Creator: Moreno Clack, E. Veronica
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Intrusion Detection System for Drones

Description: Drones are vulnerable to cyber-attacks due to their reliance on wireless networks for communication and control. This dissertation addresses this critical need by exploring novel methodologies for drone security through advanced anomaly detection systems and enhancing communication protocols. The research is organized around three main objectives: (1) detecting abnormalities in network-side operations of drones using machine learning (ML) algorithms, (2) developing control-side anomaly detectio… more
This item is restricted from view until January 1, 2026.
Date: December 2024
Creator: Tufekci, Burak
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Experimental and Computational Investigations of Transition Metal Carbene and Chelating Ligand Complexes for Catalytic Applications

Description: In the field of catalysis, developing cost-effective, efficient, and readily available metal complexes is crucial. This study explores transition metal complexes through experimental, computational, and machine learning methods, focusing on abundant first-row metals like nickel, copper, and zinc. These metals offer a potential eco-friendly alternative to expensive, less sustainable metals. As benchmarks, palladium and platinum complexes were examined for comparison due to their well-established… more
This item is restricted from view until January 1, 2026.
Date: December 2024
Creator: Vargas Trujillo, Daniela Alejandra
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Academic Dishonesty in the Age of AI: Connecting Student Generative AI Use and the Fraud Triangle within Health Professions Education

Description: This research explores the influence of generative AI (GenAI) tools, like ChatGPT, on academic integrity within higher education. By applying the fraud triangle framework—which includes incentive, opportunity, and rationalization—this study aims to understand the motivations behind student misuse of GenAI technologies for academic dishonesty. The study employed a quantitative survey to analyze the relationship between these fraud triangle constructs and student behaviors in a sample of graduate… more
Date: December 2024
Creator: Mendolia, Tracy Ann
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Unraveling Respiratory Physiology and Morphology: Influences of Temperature and Oxygen on Respiration in Bristlenose Plecos (Ancistrus cirrhosus)

Description: Bristlenose plecostomus (Ancistrus cirrhosus), a freshwater armored catfish from the Paraná River basin, belongs to the Loricariidae subfamily known for air-breathing capabilities. Its stomach functions as an air-breathing organ (ABO), enabling survival in hypoxic aquatic environments. Previous studies identified a critical developmental window of 1.8 to 3.0 cm for air breathing onset. This study aims to elucidate the morphological changes in the ABO during development and investigate ventilato… more
Date: December 2024
Creator: Valdez, Hayley Diane
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Optimizing Organizational Structures for Enhanced Student Outcomes: A Three Year Secondary Data Analysis of Administrative Intensity in Higher Education

Description: The purpose of this non-experimental, quantitative study is to investigate the relationship between administrative intensity and student outcomes. Utilizing secondary data analysis and techniques and data from the Integrated Postsecondary Education Data Set (IPEDS, 2022), regression, t-test, and canonical correlation analyses are used to determine a score of administrative intensity that is then tested for its relationship to graduation rates at both the individual institution and network syste… more
Date: December 2024
Creator: Romine, Kerry Don
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Polymer Templated Nanoporous Metal Oxide Coatings for Functional Applications

Description: Nanoporous ceramic structures are very important for a wide range of applications such as in gas sensors, catalysts, antireflective coatings, self-cleaning surfaces, among others, due to the high surface area in these coatings that facilitate enhanced performances in areas where they are deployed. In comparison with other synthesis techniques, the design of these porous ceramic coatings with the polymer template infiltration approach offers controllability over the porous structures, coating th… more
This item is restricted from view until January 1, 2026.
Date: December 2024
Creator: Omotosho, Khalil Dolapo
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Co-teaching Dyads: Knowledge and Perceptions Regarding Effective Strategies for Co-teaching Students with Autism Spectrum Disorder in General Education Settings

Description: Research has indicated that while the number of students diagnosed with autism spectrum disorder (ASD) in schools is increasing, the ability of teachers to support them is trailing behind. A previous review of the literature reported that the social well-being, functional or life skills, and academic achievement of students with ASD were positively impacted by the knowledge and skills of co-teachers related to both, the knowledge of ASD and co-teaching. However, data regarding how to put these … more
Date: December 2024
Creator: Marzullo-Matchniff, Kimberly Ann
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Examining a Management Training Program from Multiple Perspectives: A Case Study Involving Organizational Leaders, Instructional Designers, and Past Program Participants

Description: The purpose of this dissertation was to evaluate the Emerging Leaders series, a leadership and management training curriculum offered by NFP, an international broker-dealer organization with over 6,000 employees. Previous learners were contacted and asked to participate in a course reflection survey and follow-up semi-structured interviews to evaluate the training program. The instructional design team and company leadership were also approached for semi-structured interviews. The questions in … more
Date: December 2024
Creator: Gonzalez, Leonardo
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

An Analysis of Staff Play Behaviors

Description: In behavior analytic research and clinical practice, creativity has been examined as variability in responding. This is an especially important topic for children with autism spectrum disorder, who are more likely to engage in restricted, repetitive patterns of responding. Previous researchers have evaluated several antecedent (e.g., prompting) and consequent strategies (e.g., lag schedules) to increase response variability across a variety of socially significant responses. One area receiving … more
Date: December 2024
Creator: Majeski-Gerken, Maddison J.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

The Memory of the Black Campus Movement, 1968-1969

Description: This thesis explores visual, social movement, nation-building, and higher education rhetorics found within three protests during the Black Campus Movement: the Columbia University Protest of 1968, the Duke University Allen Building Takeover of 1969, and Cornell University’s Willard Straight Hall Takeover of 1969. More specifically, this thesis asks how the public and higher education institutions have recalled or intentionally forgotten these racially-charged events from a crucial period in the… more
Date: December 2024
Creator: Stuart, Meredith Anne
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Modeling of Hot Rolling NiTi B2-Cubic with Finite Element Analysis

Description: The objective of this study was to model the hot rolling behavior of austenite (B2-cubic) phase NiTi shape memory alloy with FORGE NxT, a finite element analysis (FEA) software package developed by Transvalor. Isothermal hot compression data was used to fit the Hansel-Spittel constitutive model for flow stress used by the software to determine the material specific coefficients. Compression models were simulated to verify the Hansel-Spittel coefficients. The coefficients were found to be a suff… more
Date: December 2024
Creator: Cunningham, Adam Michael
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

A Study of Sparse Data Acceleration for Machine Learning and Interference-Aware Scheduling for High Performance Computing

Description: Heterogeneous computing (HC), or computing with systems that employ multiple types of processors or accelerators is becoming the dominating computing paradigm. With the ever-increasing importance of big-data applications such as machine learning (ML), graph processing, and graph neural networks, as well as high performance computing (HPC) applications like molecular dynamics simulations, heterogeneous computing is increasingly necessary to improve application performance. Accelerators such as g… more
This item is restricted from view until January 1, 2027.
Date: December 2024
Creator: Weaver, Alex Michael
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Insights and Strategies for Improving Software Developer Productivity

Description: This dissertation explores several methods and insights to enhance productivity by saving time and effort, improving testing skills, and reducing testing costs. The first contribution provides software testing tools based on selected criteria. Holding team-based competitions to detect faults in different programming languages is introduced in the second contribution. In the last contribution, we utilize an optimization technique of regression testing to enhance software developers’ productivity… more
This item is restricted from view until January 1, 2027.
Date: December 2024
Creator: Alhumud, Waleed Ghazi M
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Development of High-Performance GPUs in Accelerated Computing

Description: This dissertation conducted an in-depth analysis of graphics processing unit (GPU) performance models and configurations. It profiled GPU systems across a range of hardware configurations and workloads, employing machine learning techniques such as support vector machines (SVM) and Random Forest algorithms to develop predictive models and identify key system parameters impacting performance. This work also presents the Genomics-GPU benchmark suite, comprising ten critical algorithms representat… more
This item is restricted from view until January 1, 2027.
Date: December 2024
Creator: Liu, Zhuren
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

A Performance Guide to the "Song Concerto" (2005) by Libby Larsen

Description: Libby Larsen, born in 1950, is a GRAMMY award-winning composer. Composed in 2005, Song Concerto for solo saxophone (alto and soprano, one performer) and piano or chamber orchestra holds particular significance in the contemporary saxophone repertoire, as it is the only concerto that Larsen composed for the saxophone. Larsen melded four different aspects of song and uses the concerto form to showcase the saxophone’s powerful lyrical qualities in this work. The purpose of this document is to prov… more
Date: December 2024
Creator: Zhang, Ruiqian
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Bioactivity of Bioprinted Scaffolds Using Hybrid PEGDA and Self-Assembling Peptide Bio-Inks for Culture of Human Dermal Fibroblast Cells

Description: This study investigates the bioactivity of bioprinted scaffolds cultured with adult human dermal fibroblast cells (aHDF) used for tissue regeneration by employing Lumen X+ 3D bioprinter. Polyethylene glycol diacrylate (PEGDA) is the widely used bioink in these Lumen bioprinters. Although PEGDA is meritorious for its photopolymerization capabilities and biological and biomedical applications, it has very minimal inherent cell adhesion and proliferation properties. Hence in order to improvise thi… more
This item is restricted from view until January 1, 2026.
Date: December 2024
Creator: Irukuvarjula, Vishalakshi
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

An Iron Cage or a Steppingstone: Marxist and Weberian Alienation within Capitalism

Description: When liberal aristocrats and bourgeois merchants overthrew the last vestiges of feudalism it began a period of unexpected growth and transformation. While the political and economical spheres of the capitalist system are oft intertwined, they are most commonly in a strange tension with one another. The early works of Karl Marx contended this relationship to be fundamental incompatibility, which given time would be supplanted by a revolution of a new working class. Decades later, Max Weber’s lec… more
This item is restricted from view until January 1, 2027.
Date: December 2024
Creator: Boyer, Jacoby Louis
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Roles of Home Environment and Parents' Support on Young Children's Physical Activity and School Readiness: A Mixed Methods Study

Description: This dissertation was guided by the social ecological model and family resilience framework to investigate the roles of the home environment (i.e., home affordances) and parents’ support (i.e., home-based involvement, physical activity [PA]) on Head Start children’s PA and school readiness (i.e., motor competence, executive functions). An explanatory sequential mixed methods design was utilized. In the quantitative study, parents and children (N = 86) were recruited from five Head Start centers… more
This item is restricted from view until January 1, 2027.
Date: December 2024
Creator: West, Ana Alvarez
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

An Autoethnographic Survey on Community Archival Practices of African Americans in Texas during the COVID-19 Pandemic

Description: In a pioneering effort, this study examined the participatory practices of the African American community in Texas using community archives and the role of information professionals. This dissertation is driven by two research questions that arise from the COVID-19 pandemic: Q1: What factors influence African American communities in Texas to engage in community archiving practices for inclusion in Black galleries, libraries, archives, and museums? and Q2: What role does the researcher play in a… more
This item is restricted from view until July 1, 2025.
Date: December 2024
Creator: Keeton, kYmberly Mieshia Dionne
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

"Queer Street": Essays

Description: A memoir in essays, this project interrogates the landscape of a late-to-life queer human as they come to terms with their shifting identity, the end of their marriage, and the lingering effects of a parent's influence, five years after the father has passed. Boxing saves the writer, as they process their grief, major life changes, and start the arduous process of learning who they've always been, but are just now truly discovering.
This item is restricted from view until January 1, 2030.
Date: December 2024
Creator: Vanderlip, Kendra
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Capturing Transient and Intermediate States of Coordination Chemistry Under High Pressure

Description: This dissertation aims to establish experimental methods to characterize transient states of chemical reactions by stabilizing transient states using mechanical stress. We argue that gigapascal (GPa)-level pressure produces deformed molecular structures that approximate the transient states along the reaction coordinate on the ground-state surface, thereby fundamentally understanding their mechanism through high-pressure mechanochemistry. By varying the pressure, the entire reaction path can be… more
Date: December 2024
Creator: Archambault, Cynthia Megan
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Caregiver Self-Perceived Comfort Level and Training Resource as Predictors of Augmentative and Alternative Communication Use

Description: Using a descriptive quantitative approach, this study examined the role of caregiver self-perceived comfort level (SPCL) in the success of augmentative and alternative communication (AAC) system implementation. The role of SPCL as a mediator variable affecting the relationship between the predictor variable (caregiver training resources) and the outcome variable (AAC use) was investigated. Related factors examined as covariates include caregiver demographics (gender, education level, and settin… more
Date: December 2024
Creator: Baffoe, Edward
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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