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3D Printed Self-Activated Carbon Electrodes for Supercapacitor Applications

Description: This study investigated a new approach to achieving high energy density supercapacitors (SCs) by using high surface area self-activated carbon from waste coffee grounds (WCGs) and modifying 3D printed electrodes' porous structure by varying infill density. The derived activated carbons' surface area, pore size, and pore volume were controlled by thermally treating the WCGs at different temperatures (1000˚C, 1100˚C, and 1200˚C) and post-treating with HCL to remove water-soluble ashes and contami… more
Date: July 2023
Creator: Disi, Onome Aghogho
Partner: UNT Libraries
open access

Installation View of The Elsewhere in Everything

Description: An Installation View of The Elsewhere in Everything (No. 3) as part of 2024 MFA exhibition by artist MCat Davis, entitled "The Elsewhere in Everything" in the Cora Stafford Gallery, South, UNT Art Building, 1201 W Mulberry St, Denton, TX from March 6 to March 9, 2024. The Elsewhere in Everything is an exhibition that presents paintings exploring a hidden realm beyond ordinary perception. Through bold colors and abstraction, these paintings depict elusive experiences, aiming to capture transcend… more
Date: 2024
Creator: Davis, MCat
Partner: UNT College of Visual Arts + Design

Building a Digital Twin of the University of North Texas Using LiDAR and GIS Data

Description: Digital twins are virtual renditions of the actual world that include real-world assets, connections, activities, and processes. Recent developments in technologies play a key role in advancing the digital twin concept in urban planning, designing, and monitoring. Moreover, the latest developments in remote sensing technology have resulted in accurate city-scale light detection and ranging (LiDAR) data, which can be used to represent urban objects (buildings, vegetation, roads, and utilities), … more
Date: December 2023
Creator: Bhattacharjee, Shwarnali
Partner: UNT Libraries
open access

Quantification of the Seasonality and Vertical Dispersion Environment of PM2.5 Variation: A Comparative Analysis of Micro-Scale Wind-Based Buffer Methods

Description: Increasing PM2.5 (particulate matter smaller than 2.5 micrometers) poses a significant health risk to people. Understanding variables critical to PM2.5 spatial and temporal variation is a first step towards protecting vulnerable populations from exposure. Previous studies investigate variables responsible for PM2.5 variation but have a limited temporal span. Moreover, although land-use classes are often taken into account, the vertical environment's influence (e.g., buildings, trees) on PM2.5 c… more
Date: May 2023
Creator: Ray, Noah R.
Partner: UNT Libraries

Secondary Production of Dragonflies: Comparing Ecosystem Function of Ponds within an Urban Landscape in North Central Texas

Description: The change of land use to include more urban areas is considered one of the main threats to biodiversity worldwide. Urban stormwater retention ponds have been built to collect storm runoff intensified by the increase in impervious surfaces. Although subject to environmental pressures like habitat degradation and pollution, these stormwater retention ponds are diversity hotspots by providing habitat for several aquatic and semi-aquatic species, including dragonflies. Previous research in Dent… more
Date: July 2023
Creator: Stallings, Gillian Carol
Partner: UNT Libraries

Exploring the Dimensions of the Learning Organization Questionnaire (DLOQ) for Startup Learning Environments

Description: Although the Dimensions of the Learning Organization Questionnaire (DLOQ) has been widely accepted by the HRD community, it has not been tested in a startup context for reliability. The purpose of the current study is to explore if the DLOQ is a reliable instrument for startups to help them be more successful. The current study seeks to address some of the questions, which have been posed by previous researchers. The study utilizes a mixed-method design applying Cronbach alpha values to check t… more
This item is restricted from view until August 1, 2025.
Date: July 2023
Creator: Morris, Mark Orlando
Partner: UNT Libraries
open access

A Mixed Method Approach: The Influence of Military Identity on Person-Organization Fit and Organizational Commitment, and a Proposed System of Military to Civilian Employment Transition

Description: The evaluation of the transition experiences of veterans to civilian life was conducted. The military to civilian transition (MCT) framework along with theories covering organizational, identity, and systems streams of research situated the study. A mixed methods approach was conducted in two phases: a 28-item survey and 1.5-hour interviews, which helped contextualize and explain survey findings. The multiple regression procedure examined the relationship among three variables: person-organizat… more
Date: May 2023
Creator: Doyle, Alaina M.
Partner: UNT Libraries
open access

The Role of Art Education in Promoting Peace in Saudi Arabia

Description: This critical qualitative study explores the art education curriculum's role in promoting peace in Saudi Arabia. The purpose of this research was to make possible a deeper understanding of the elements of peace in the curriculum through a critical content analysis of art textbooks for teachers and students and semi-structured interviews with art education teachers. The theoretical framework is based on the principles of critical pedagogy advocated by Paulo Freire. The results uncovered ways in … more
Date: May 2024
Creator: Alsufayran, Nouf Abdulaziz A.
Partner: UNT Libraries
open access

Saudi Arabia Teachers' Use of Formative Assessment in 8th Grade Mathematics and Its Impact on Female Students' Attitudes

Description: This dissertation aims to understand the female Saudi mathematics teachers' formative assessment practices after coming back to in-person instruction and the impact of such practices on female student attitudes toward learning mathematics. The study was conducted in two middle schools located in the North and South districts of a large city in Saudi Arabia, using a sequential mixed study design methodology . The study's sample included 4 female mathematics teachers and 104 8th grade mathematics… more
Date: May 2024
Creator: Almalki, Shorouq Mohammed A
Partner: UNT Libraries

Stabilization Studies and Applications of Luminescent Carbon Dioxide/Acidity/Oxygen Sensors

Description: Neutral red (NR), a eurhodin dye, is often used for staining living cells, but we demonstrated for the first time that NR can also serve as a CO2 sensor, because of NR's unique pH dependent optical properties, which change with dissolved carbon dioxide (dCO2) concentrations. In the present study, the optical sensitivity of NR was quantified as a function of changes in absorption and emission spectra to dCO2 in a pH 7.3 buffer medium at eight different dCO2 concentrations. NR exhibited a respons… more
Date: May 2024
Creator: Konanur Shankar, Sindhu Shankar
Partner: UNT Libraries
open access

The Paradox of Culturally Responsive School Leadership: A Multiple Case Study

Description: Minoritized students in public schools in Texas and across the nation continue to underachieve academically compared to their white peers. Despite similar academic achievement and socioeconomic backgrounds, minoritized students are often perceived more negatively by a predominantly white teacher workforce. The idea of cultural dissonance or mismatch between teachers and their students has led to the development of pedagogical frameworks such as culturally responsive teaching (CRT) that seek to … more
Date: May 2024
Creator: Diaz-Alcaraz, Daniel
Partner: UNT Libraries

Efficient Metal-Organic Emitters for OLED Applications: Photophysics, Molecular Stacking, and Device Engineering

Description: This dissertation addresses the following issues. Firstly, to reduce the efficiency roll-off at high current densities or brightness, of green, fluorescent organic light-emitting (OLEDs), we introduced a double-doped structure into the emissive layer. It includes two thin buffer layers and a broad emissive region stacked with two doped layers. This modification better controls charge injection/transport and recombination, boosting EL and PL efficiency. Secondly, aiming for highly efficient phos… more
This item is restricted from view until June 1, 2029.
Date: May 2024
Creator: Li, Shan
Partner: UNT Libraries

Psychological Distress in Collegiate Music Students: Examining Latent Relationships through Structural Equation Modeling

Description: The purpose of this study was to characterize psychological distress in collegiate music students via analysis of related latent constructs. The relationships between psychological distress, perceived stress, perception of learning environment, financial stress, social support, and resilience were examined simultaneously via structural equation modeling with psychological distress as the primary endogenous variable. A structural model was developed a priori based on established relationships be… more
This item is restricted from view until June 1, 2026.
Date: May 2024
Creator: McGoldrick, Brian B.
Partner: UNT Libraries

Solution-Processed Graphene for Flexible Printed Biosensors and Electromyography

Description: Inkjet-printing of graphene is a desirable additive-manufacturing process for rapid-prototyping and centers around the readily scalable process of liquid-phase exfoliation of graphene. Unfortunately, most common solvents for this process such as N-methyl-2-pyrrolidone (NMP) or cyclohexanone/terpineol (C/T) are toxic. Dihydrolevoglucosenone, commonly known as Cyrene, is a renewable and fully biodegradable non-toxic solvent that represents an ideal alternative. Here, we demonstrate the potential … more
Date: May 2024
Creator: Tesky, Allyson R.
Partner: UNT Libraries
open access

Annual Survivorship and Movement Ecology of Migrant American Kestrels (Falco sparverius) Overwintering in North Texas

Description: American Kestrels (Falco sparverius) are a small falcon with an expansive range across North America. However, kestrels have been reported to be declining since the 1960s, with the primary cause of decline unknown. With previous research focusing on the summer breeding season, researchers have called for additional investigation in understudied wintering and migratory periods. In Chapter 2, I quantified annual survivorship against five covariates of migrant kestrels wintering in north Texas to … more
Date: May 2024
Creator: Kaleta, Madeleine Grace
Partner: UNT Libraries
open access

Lite-Agro: Integrating Federated Learning and TinyML on IoAT-Edge for Plant Disease Classification

Description: Lite-Agro studies applications of TinyML in pear (Pyrus communis) tree disease identification and explores hardware implementations with an ESP32 microcontroller. The study works with the DiaMOS Pear Dataset to learn through image analysis whether the leaf is healthy or not, and classifies it according to curl, healthy, spot or slug categories. The system is designed as a low cost and light-duty computing detection edge solution that compares models such as InceptionV3, XceptionV3, EfficientNet… more
Date: May 2024
Creator: Dockendorf, Catherine April
Partner: UNT Libraries
open access

Nutritional Habits of Student Musicians and Their Effects: Consumption of Fats, Fruits, and Vegetables as It Relates to BMI, Mental Health, and Other Factors

Description: This study conducted the first nationwide epidemiological survey to investigate the effects of dietary fat, fruit, and vegetable intake on the health of student musicians in the United States. Despite the recognized importance of nutrition in other performance fields, such as athletics, the relationship between diet and health in musicians has not been rigorously explored until now. The survey assessed dietary intake, body mass index (BMI), mood states via the DASS-21, engagement with healthcar… more
Date: May 2024
Creator: Gamble, Ryan De Boer
Partner: UNT Libraries
open access

Special Education Teacher Job Satisfaction and Its Impact on Teacher Shortages

Description: This study examined the link between special education teacher job satisfaction and its impact on teacher shortages. Covariation of administrative support and job satisfaction was evaluated with school sector also evaluated for relevance to special education teacher job satisfaction. A quantitative, cross-sectional research model was used for the data collection and analysis process. The population for the study was special education teachers, and data was extracted from the National Teacher an… more
Date: May 2024
Creator: Hooston, Michelle Marie
Partner: UNT Libraries
open access

An Annotated Repertoire List for Pre-Collegiate Collaborative Pianists

Description: This paper addresses the crucial need for comprehensive guidance in repertoire selection and technical development for pre-collegiate collaborative pianists. By compiling an annotated repertoire list, this research aims to assist teachers and pianists in navigating the developmental stages of collaborative piano work. The guide focuses on establishing foundational skills and techniques necessary for effective collaboration with various instruments, emphasizing the pianist's role as a musical pa… more
Date: May 2024
Creator: Guo, Jun
Partner: UNT Libraries

Influence of Energy Density (Fluence) on the Microstructure and Magnetic Properties of Additively Manufactured Soft Magnetic Alloys

Description: Additive manufacturing (AM) procedures involving the fusion of metal powders or wires tend to produce textured columnar grains, which can have positive effects on the magnetic performance of Fe-Si electrical steels in soft magnetic applications. This work focuses on understanding the impact of energy density (fluence) evolution of grain morphology and texture in Fe-3.8wt%Si and Fe-6wt%Si alloys produced by fusion-based AM. The results show that the development of texture in these alloys is prom… more
Date: May 2024
Creator: Varahabhatla, Sai Sree Meenakshi
Partner: UNT Libraries
open access

Community and Health in Central Fort Worth: Understanding the Community's Perspectives on Health towards Informing Community-Based Interventions

Description: In 2019, a major academic medical center released a public health research report on life expectancies in Texas organized by zip code. The study revealed that the 76104-zip code, part of the central area of the city of Fort Worth, has the lowest life expectancy in the entire state. Concerned about the life expectancy study statistics, New Mount Rose Baptist Church, affiliated churches, and other community members sought to understand better why the life expectancy in their area was so low. This… more
Date: May 2024
Creator: Giamarqo, Giamarqo
Partner: UNT Libraries

Investigation of Existing and New Human Resource Practices on Public Health Employee Retention during the COVID-19 Pandemic in Saudi Arabia

Description: This research investigates existing and new HR practices that have impacted public health employee retention in Saudi Arabia during the COVID-19 pandemic. It builds on social support theory and social exchange theory to better understand the relationships between HR practices and retention, and uses quantitative methods to examine the hypotheses based on a conceptual framework. While OLS regression is employed to analyze the relationships between HR practices and retention, path analysis (boots… more
This item is restricted from view until August 1, 2025.
Date: July 2023
Creator: Alattas, Mohsen Mohammad A
Partner: UNT Libraries
open access

Housing and Jobs: Investigating the Geographic Variance of Housing Vouchers in Metropolitan Regions

Description: The Department of Housing and Urban Development is the primary public agency responsible for providing housing subsidies to low-income households. The Home Choice Voucher Program (HCVP) is currently the most significant housing subsidy. The voucher can be transferred to any location where the landlord is registered with the local housing agency to participate in the program. The mobility of the voucher is designed to decrease concentrations of low-income households in areas that lack economic, … more
Date: July 2023
Creator: Britton, Honore Emanuel
Partner: UNT Libraries

Times-Mu-Ta-Tion

Description: Art work in Video and Audio surround installation (PVC pipes, zip ties, projection, speakers) by artist Jae-Eun Suh, as part of 2023 MFA exhibition entitled: "Times-Mu-Ta-Tion" in the Cora Stafford Gallery South, College of Visual Arts & Design, 1201 W Mulberry St, Denton, Texas, from April 19 - April 22, 2023.
Access: Restricted to UNT Community Members. Login required if off-campus.
Date: 2023
Creator: Suh, Jae-Eun
Partner: UNT College of Visual Arts + Design
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