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Needs Analysis for the Implementation of Supplemental Educational Videos in the Training of Surgical Residents
This dissertation aimed to research the possibility of integrating a supplemental video system in a surgical residency for educational use. A needs analysis was to be conducted in order to find if current stakeholders would accept such a system within a surgical residency: (a) surgical residents, (b) teaching physicians, and (c) administrators. The study aimed to research factors that complicate the current educational setting for surgical residents, such as time allotted for learning, fatigue during learning opportunities, teaching physicians time and effort into teaching responsibilities, and the cost of such systems and their perceived value to administrators. Also investigated was the type of learning theories best suited to creating a supplemental video system in a hospital setting. After this, a set of interviews was conducted amongst the stakeholders to evaluate the needs of the residency and the willingness of all parties to accept the system into their educational structure. What was found was a high level of interest in a more centralized learning management system, which is the central depository for all educational materials to be used by the residents. Most agreed that the learning environment lacked structure and optimally required something more substantial than adding supplemental videos to the …
Date:
December 2023
Creator:
Serfin, Michael
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Neural Network Classifiers for Object Detection in Optical and Infrared Images
This thesis presents a series of neural network classifiers for object detection in both optical and infrared images. The focus of this work is on efficient and accurate solutions. The thesis discusses the evolution of the highly efficient and tiny network Binary Classification Vision Transformer (BC-ViT) and how through thoughtful modifications and improvements, the BC-ViT can be utilized for tasks of increasing complexity. Chapter 2 discusses the creation of BC-ViT and its initial use case for underwater image classification of optical images. The BC-ViT is able to complete its task with an accuracy of 99.29\% while being comprised of a mere 15,981 total trainable parameters. Chapter 3, Waste Multi-Class Vision Transformer (WMC-ViT), introduces the usefulness of mindful algorithm design for the realm of multi-class classification on a mutually exclusive dataset. WMC-ViT shows that the task oriented design strategy allowed for a network to achieve an accuracy score of 94.27\% on a five class problem while still maintaining a tiny parameter count of 35,492. The final chapter demonstrates that by utilizing functional blocks of BC-ViT, a simple and effective target detection algorithm for infrared images can be created. The Edge Infrared Vision Transformer (EIR-ViT) showed admirable results with a high IoU …
Date:
December 2023
Creator:
Adams, Ethan Richard
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Nitrogen Reduction Reaction: Deposition, Characterization and Selectivity of Transition Metal (V, Co and Ti) Oxynitrides as Electrocatalysts
The electrocatalytic nitrogen reduction reaction (NRR) is of considerable interest due to its potential for less energy intensive and environmentally friendly ammonia production which is critical for agricultural and clean energy applications. However, the selectivity of NRR compared to the hydrogen evolution reaction (HER) often poses challenges for various catalysts, including Earth-abundant transition metal oxynitrides like Ti, V, and Co. In this work, a comparative analysis of the selectivity of these three metal oxynitrides was conducted, each having different metal oxophilicities. A combination of electrochemical, surface characterizations and density functional theory (DFT) calculations were employed to directly assess NRR and HER activities under the same reaction conditions. Results show that cobalt oxynitrides exhibit NRR activity at pH 10, involving the electrochemical reduction of both lattice-bound nitrogen and dissolved N2, although more HER activity was observed. In contrast, vanadium oxynitride films displayed HER inactivity at pH 7 and 10 but demonstrated NRR activity at pH 7, while titanium oxynitrides were active at pH 3.2 but inactive under neutral and basic pH conditions. These comprehensive studies highlight substantial variations in HER and NRR selectivity based on transition metal oxophilicity/azaphilicity, indicating distinct mechanisms governing NRR and HER mechanisms.
Date:
December 2023
Creator:
Chukwunenye, Precious O.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Option Pricing Under New Classes of Jump-Diffusion Processes
In this dissertation, we introduce novel exponential jump-diffusion models for pricing options. Firstly, the normal convolution gamma mixture jump-diffusion model is presented. This model generalizes Merton's jump-diffusion and Kou's double exponential jump-diffusion. We show that the normal convolution gamma mixture jump-diffusion model captures some economically important features of the asset price, and that it exhibits heavier tails than both Merton jump-diffusion and double exponential jump-diffusion models. Secondly, the normal convolution double gamma jump-diffusion model for pricing options is presented. We show that under certain configurations of both the normal convolution gamma mixture and the normal convolution double gamma jump-diffusion models, the latter exhibits a heavier left or right tail than the former. For both models, the maximum likelihood procedure for estimating the model parameters under the physical measure is fairly straightforward; moreover, the likelihood function is given in closed form thereby eliminating the need to embed a probability density function recovery procedure such as the fast Fourier transform or the Fourier-cosine expansion methods in the parameter estimation procedure. In addition, both models can reproduce the implied volatility surface observed in the options data and provide a good fit to the market-quoted European option prices.
Date:
December 2023
Creator:
Adiele, Ugochukwu Oliver
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Pedagogical Analysis of "Seven Chinese Folk Songs" by Wanghua Chu
Wanghua Chu (b. 1941) is an outstanding Chinese composer and pianist, who has written extensively for piano. This dissertation offers a pedagogical analysis of Seven Chinese Folk Songs (1999), one of his most famous and well-regarded piano solo works. The present study has two broad and related aims: to introduce Wanghua Chu's Seven Chinese folk songs to a broader community of pianists outside of China; and to provide a pedagogical analysis so that pianists of a late-intermediate level and higher can learn it effectively and teachers can teach it successfully. Chapter 2 provides an overview of Wanghua Chu's artistic career and major works, as well as the composition background of Seven Chinese Folk Songs. Chapter 3 introduces the seven original Chinese folk songs that are used in this work, both the actual songs and the song types. Chapter 4 provides an analysis of the musical form of each movement of Seven Chinese Folk Songs. Chapter 5 analyzes the technical difficulties of this work and provides specific practice methods to solve them. Seven Chinese Folk Songs exposes the pianist to the diversity and richness of Chinese folk songs and offers them a different kind of learning opportunity in which they not …
Date:
December 2023
Creator:
Chen, Zhaodong
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Performance Guide to Zili Li's Viola Concerto No. 1 (2010)
The Viola Concerto No. 1 was commissioned in 2010 by Xidi Shen, a viola professor at the Shanghai Conservatory of Music, and composed the same year by Zili Li (b. 1938), a Chinese composer and violinist. For musical, cultural, and technical reasons, this little-known Chinese viola concerto strongly aroused my interest, leading me to use it as the research subject for my doctoral dissertation and to also introduce this work to Western violists. This dissertation provides a performance guide to Zili Li's Viola Concerto No. 1. By analyzing the Mongolian music topics used in the work as well as addressing its typical Mongolian-style string performance techniques, the dissertation should provide a foundation for viola players who wish to play the work but are not familiar with this specific style. In addition, I hope that it can serve as an inspiration to other string players who are playing works based on Mongolian music.
Date:
December 2023
Creator:
Chen, Fang
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Politics of F. Scott Fizgerald
F. Scott Fitzgerald is valued for his contribution to literary arts, culture and his discussion of the American Dream. I argue that his discussion of the American Dream was a lens through which he gave readers access to political insights and an education about political philosophy, American politics, virtue, and reasoning. The American Dream, at its greatest, for Fitzgerald is a nation building myth but at its lowest is a dull materialistic construct. Throughout his works Fitzgerald connects philosophic ideas to the American Dream in attempts to educate and ennoble his readers. The ability to judge well is a critical piece of self-government that was a focus of Fitzgerald's throughout his body of work. In The Beautiful and Damned, by giving weight to Platonic ideals of beauty and goodness, and Platonic heuristics like the allegory of the cave he attempted to negate the detrimental effects of nihilism in America at his time and after. In The Great Gatsby, by presenting virtue of the contemplative life that could be cultivated by his readers, in his time, and including esoteric teachings on those virtues and values he attempted to negate the detrimental effects of materialism on the American dream. Finally, in The …
Date:
December 2023
Creator:
Shiveley, Sara Carson
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Predictors of Academic Success in an Early College Entrance Program
Early college entrance programs have existed in the United States since the 1950s, but in-depth research on academic success in these programs is lacking. Every year, early college entrance programs utilize a variety of data-gathering and candidate-screening techniques to select hundreds of students for admission into these accelerated programs. However, only a smattering of research articles has discussed the factors that predict academic success in these programs. This exploratory study investigated commonly-relied-upon admissions data points—such as high school GPA and ACT scores—and demographic information—such as sex, ethnicity, and locality—to see if any of these factors predicted academic success: namely, graduation and early college entrance program GPA. Secondary data from nearly 800 students admitted over an 11-year period to a state-supported, residential early college entrance program located at a large Southern university in the United States were utilized for this study. Logistic regression failed to yield a model that could accurately predict whether or not a student would graduate from the program. Multiple regression models showed that high school GPA and ACT scores were predictive of performance, and that factors like locality and ethnicity can have predictive power as well. However, the low variance in performance explained by the variables included …
Date:
December 2023
Creator:
Earls, Samuel Wayne
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Promoting Women? Causes and Effects of Gender-Informed Transitional Justice
Quantitative research investigating the causes and subsequent impact of transitional justice practices has further developed thanks to the production of cross-national data on justice practices, namely by the Justice Data Project and the Transitional Justice Research Collaborative. Current work, however, does not consider the role of justice from a feminist perspective. For example, with respect to causes, we know little about whether and how justice processes are gender inclusive, and what the factors lead to gendered inclusion within justice practices. There is also a need for further inquiry to explain how gendered conflict violence, e.g., sexual violence directed at women, influences justice adoption, and if so, whether these justice processes are more likely to be inclusive of women and gendered issues. Regarding justice impact (its post-hoc effects), there is much to know about the implications gendered justice pose for post-violence societies. Moving away from essentialist notions that position men as protectors and women as inherently peaceful and mere victims of abuse, feminist scholars advocate for research to showcase women's agency as security providers in peacebuilding and peacemaking. I introduce a framework to explain how women and gendered issues become integrated into justice practices and evaluate implications that result from these …
Date:
December 2023
Creator:
Roark, Polly DeAnne
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Protective Factors for Eating, Shape, and Weight Concerns across Diverse Gender Identities
We ran three MANOVAs in a sample of 422 young adults to examine differences in eating, shape, and weight concerns (i.e., ESW concerns) between gender diverse individuals, ciswomen, and cismen. Additionally, we examined the effects of self-esteem and sense of belonging on ESW concerns. We also tested for interaction (moderation) effects between gender and self-esteem and gender and sense of belonging. Findings indicated that gender diverse individuals experience ESW concerns at a significantly higher rate than cisgender men. There were no differences, however, in ESW concerns between gender diverse people and ciswomen. Self-esteem and sense of belonging significantly predicted ESW concerns, but no interaction effects were observed. Limitations of the current study include using one large gender diverse group rather than exploring each individual gender identity as well as limited recruitment. Future studies should recruit more participants across the gender spectrum in order to better understand the unique experiences of each gender group as it relates to eating, shape, and weight concerns and expand recruitment across broader regions of the United States.
Date:
December 2023
Creator:
Watson, McKenzie Kimberly
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Proteomic-Based Assessment of Estrogenic Endocrine Disruption in Hyalella azteca
In our studies, we used the environmentally important crustacean Hyalella azteca (H. azteca) as an invertebrate model and 17β-estradiol (E2) as a representative of environmental estrogenic endocrine disrupting compounds (EDCs) for proteomics-based investigations of endocrine disruptions in an aquatic ecosystem. Using liquid chromatography coupled with tandem mass spectrometry, our investigation focused for the first time on the recognition of biological and molecular events affected by E2 exposure with the long-term goal of identifying panels of potential biomarkers for environmental estrogenic endocrine disruption. We analyzed E2-induced changes in protein expressions in female and male H. azteca using label-free quantitative proteomics. With discovery-driven shotgun approach, we identified over 50 proteins that were affected by E2 in a sex-specific manner in our model organism. We selected four E2-regulated proteins (vitellogenin, cuticle protein CPR RR, titin and clumping factor A-like protein) for validation by parallel reaction monitoring-based targeted proteomics. Altogether, our proteomics studies have characterized for the first time E2-triggered endocrine disruption in H. azteca and recognized sex-specific changes in the male and female H. azteca's proteome after aquatic exposure to this estrogen. Through targeted proteomics, we were also able to quantitatively characterize a panel of selected proteins that showed distinctive sex-specific responses to …
Date:
December 2023
Creator:
Prokai, Marcel Laszlo
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Rethinking the Study of Conflict and Peace: Making Causal Inferences in Quantitative Conflict and Peace Research
Most research questions and theory in quantitative peace and conflict research are fundamentally causal. However, a large gap exists in the extant literature between research question and research methodology. Not only does most existing methodology fail to achieve what most quantitative peace scholars attempt, but many researchers do not appear to be aware of these limitations. In this dissertation, I outline five key shortcomings within this literature that, left unaddressed, create results that are not informative of the questions quantitative peace researchers are interested in. This dissertation demonstrates solutions addressing these shortcomings with two applied chapters, conducting causal research designs on a study examining the economic impact of United Nations peacekeeping operations and the effect of human rights treaties on repression, respectively. I find that conventionally-established results in the literature change dramatically when exposed to methodological changes informed by the causal inference literature.
Date:
December 2023
Creator:
Lookabaugh Jr., Brian Scott
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Returning to Our Roots: An Anthropological Evaluation of the Farm to Keiki Program
Farm to school programs are becoming a popular intervention to address childhood obesity. The hope is to prevent later chronic illnesses such as diabetes and cardiovascular disease that can result from eating high-fat/high-calorie diets that are low in consumption of fresh fruits and vegetables. This study explores the impacts of one such program, Farm to Keiki, on students, their families, and teachers at two Native Hawaiian preschools on the island of Kauaʽi, Hawaiʽi. This program combined lessons about plants and nutrition with gardening at school and tastetesting in the classroom. Rooted in critical medical anthropology, this study utilized a combination of quantitative and qualitative methods to understand these impacts, as well as the historical and cultural contexts that have contributed to dietary changes among Native Hawaiians. Through in-depth interviews and focus groups, families and teachers described how the program encouraged the children to try new foods and eat more produce, and how the children demonstrated new knowledge about plants and healthy eating. Participants also spoke of ways in which their own knowledge and eating habits changed, and families reported carrying over many of the program's activities at home by gardening and preparing meals together. Additionally, participants offered valuable feedback on …
Date:
December 2023
Creator:
Migdol, Steven Jeffrey
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Role of Additive Manufacturing in Restructuring Supply Chains
Additive manufacturing (AM), commonly known as 3D printing, has been attracting attention from practitioners as well as academicians with its continuous evolution from being used primarily for prototyping to now end-product production. Despite this technology's current and future potential, few studies indicate that AM has not been extensively used across all industries. This dissertation addresses knowledge gaps by providing theoretical and empirical support for adopting AM through three essays that study the role of AM in restructuring supply chains. Essay 1 provides systematic support for AM implementation by developing a typology derived from technology-specific potentials and challenges to adopting AM. This study uses an exploratory research approach to collect and analyze data from semi-structured interviews of practitioners with deep knowledge of AM and supply chains from diverse industries. In Essay 2, our results show that AM adoption positively influences supply chain responsiveness and, in turn, reshoring decisions. Essay 3 compares different supply chain configurations based on traditional and AM. We developed a hybrid simulation model combining discrete event simulation and agent-based simulation and compared the performance in terms of wait time and costs. Our results indicate that under certain conditions, the centralized configuration delivers spare parts faster than the distributed …
Date:
December 2023
Creator:
Patil, Himali Kiran
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Saxophone Instruction by Women: Experiences of Achieving the Rank of Full Professor at Post-Secondary Institutions in the United States
Since the first saxophone professor at the Paris Conservatory in 1858, saxophone instruction has primarily been a male-dominated field. Numerous sources detail the experiences, lives, and influence of male post-secondary saxophone instructors. Women have made great strides in the performance and instruction of the saxophone at the post-secondary level, but sources discussing their lives and experiences are limited. Saxophone instruction at the post-secondary level in the United States began in the late 1800s. As the instrument grew in popularity through the 20th century, more and more higher education institutions began incorporating the saxophone as an instrument for primary study. This increased the need for saxophone professors in the United States. In 1994, Elizabeth Zinn Ervin, became the first woman full professor. This was 40 years after the the first man, Larry Teal, held this rank. As of 2023, 15 women have achieved the rank of full professor. This document is intended to highlight several women saxophone instructors throughout the history of the instrument, and detail the thoughts and experiences of women saxophonists who have achieved the rank of full professor in the United States.
Date:
December 2023
Creator:
Heimann, Christa Marie
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Saxophone Meets Chinese Culture: A Guide to Works for Saxophone by Composer Zou Xiangping
Zou Xiangping is one of the most significant Chinese composers who writes music for the saxophone. These works, however, are not well-known in the classical saxophone repertoire. The purpose of this dissertation is to help international saxophonists develop an enlightened understanding and ultimately, performance of two selected pieces by Chinese composer Zou Xiangping (邹向平) (b. 1951), Images of Yalong River for Alto Saxophone and Piano (雅砻江印：为中音萨克斯管和钢琴) and Song of Chuanjiang River Boatman for Saxophone Quartet (川江纤夫之歌: 为萨克斯管四重奏) (2022). The compositional background, the relevant introduction about Chinese culture, the manner in which the composer combined this with Western compositional techniques, and comprehensive performance advice of each piece are provided.
Date:
December 2023
Creator:
Zhang, Cehuai
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Social Exchange Theory in the Context of X (Twitter) and Facebook Social Media Platforms with a Focus on Privacy Concerns among Saudi Students
The current research examines the use of social media and its security settings using the Social Exchange Theory (SET) within a Saudi student environment. This research includes an introduction, literature review, methodology, results, and conclusion with the results section presenting the findings from the three essays. The first essay employs the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) methodology of SET. PRISMA's systematic and exhaustive approach to literature evaluation increases the likelihood of obtaining high-quality, reproducible findings. In the second essay, which focuses on awareness of X's (Twitter) security settings, a quantitative research approach was utilized. A sample of former and current Saudi students (graduate and undergraduate) at the University of North Texas participated in the investigation. This research provides an empirical examination of the use of X (Twitter) and its security features within this community by employing statistical analysis of the data from respondents. Likewise, the same sample of Saudi students from the University of North Texas was used for the third essay in which the use of Facebook's security settings was examined. Having a consistent sample across both studies enables a comparison and a greater understanding of the security awareness and practices of this group across …
Date:
December 2023
Creator:
Alqahtani, Sameer Mohammed S.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Sonorous Andean Landscapes: A Performance Guide for Guevara Ochoa's "Yaraví, Danza y Huayno" (n.d) and Vivanco's "Fantasía Andina" (c. 1988)
Peruvian composers Armando Guevara Ochoa (1926–2013) and César Vivanco (b. 1949) borrow and transplant musical elements from Andean folk tradition into their compositions for the modern classical flute. Guevara Ochoa's Yaraví, Danza y Huayno and Vivanco's Fantasía Andina are solo flute pieces rooted in Peruvian folklore traditions and Andean instrumental performance. The purpose of this dissertation is to provide flutists with technical and interpretative guidance in preparing these pieces. Yaraví, Danza y Huayno, a suite of three short dances, and Fantasía Andina, a free-meter piece in an improvisational style, incorporate elements that utilize the performance techniques of Andean instruments, with use of quotations from traditional Andean folk music. References to quenas (traditional vertical flutes), zampoñas (panpipes), pututos (ceremonial natural horns), charangos (Andean guitars) and Andean harps are integrated within the works and fused with themes borrowed from iconic pieces such as El cóndor pasa, and traditional harmonic, melodic and rhythmic structures of the huayno (fast festive dance) and yaraví (slow melancholic song). The techniques and traditions borrowed from Andean folk music are not notated in these scores due to the limitations of musical notation. Performers are expected to portray the Andean musical identity of the composers' intent. This dissertation assists …
Date:
December 2023
Creator:
Romo Bocanegra, Jossecarlo
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Suburban Succession and Stream Dynamics
Increasingly higher numbers of people are moving into urbanizing environments, yet our understanding of ecosystem consequences of rapid urbanization is still in its infancy. In this dissertation, I assessed dynamics of residential landscapes during suburban succession and consequences for ecosystem functioning. First, I used a space-for-time approach to quantify more than a century of suburban succession in the Dallas – Fort Worth metroplex (DFW). Attributes of residential landscape plant diversity and habitat complexity were quantified for 232 individual properties nested within 14 neighborhoods constructed between 1906 and 2020. Suburban succession progressed from simple turf lawns with limited habitat complexity to landscapes dominated by deciduous trees and high habitat complexity, but homeowner decisions related to landscape management affect the rate of that transition and the number of plants and taxa present. Next, I used the novel spatial construct of "neighborhoodsheds" to test for effects of suburban succession on carbon export, and found that the proportion of carbon derived from C3 vs. C4 plants was affected by neighborhood plant community structure (i.e. greater proportion of trees and shrubs primarily in later stages of suburban succession). Finally, I conducted a mesocosm experiment to test effects of changes in allochthonous inputs during suburban succession …
Date:
December 2023
Creator:
McGillewie, Sara B.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Surface Engineering of Materials for Beyond-Microelectronics
All oxide heterostructure Cr2O3/TiO2-x was deposited on Al2O3(0001) single crystal via MBE. The analysis of interfacial interactions involving two metal oxides resulting in magnetic properties gave insights for using such heterostructures as potential spintronic device materials. The corundum phase epitaxial growth of TiO2-x on Al2O3 was characterized using XPS, AES, EELS, and LEED. The data obtained gives evidence of presence of two-dimensional electron gas at titania surface due to oxygen vacancies formation after deposition. On titania, the deposition of chrome in UHV results in the formation of oxidized chromia overlayer by abstraction of oxygen from the TiO2-x underlayer further increasing the number of vacancies present. In industrial R&D project, dry etching of multiple optical device components was performed using a novel angled etch prototype tool. The first set of experiments involved plasma etching of SiC thin films optimized for target application. The best-known method (BKM) worked from 300mm full wafer to 200mm product. In second experimentation, a variety of gray-tone photoresist received from customers were etched using BKM. Customer received etch rate on each gray-tone material. The third experiments compared recipe R1 to test recipe R2 on the test vehicle VDC. R2 showed faster etch rate but lower process repeatability …
Date:
December 2023
Creator:
Anwar, Fatima
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Synthesis, Characterization, Standardization, and Validation of Luminescence Optical Chemosensors for the Detection of Carbon Dioxide, Aluminum Ions, and Silver Ions for Real-Life Applications
The presented dissertation encompasses three distinct investigations into novel complexes with diverse applications. Firstly, a Europium-based complex, K[Eu(hfa)4], exhibits remarkable potential for detecting dissolved CO2 in an ethylene glycol medium, offering a low limit of detection, rapid response times, and high signal-to-noise ratios. This complex demonstrates promise for quantifying CO2 concentrations and finds utility in sugar fermentation monitoring. Secondly, an innovative ratiometric optical sensor, Eu(tta)3([4,4'-(t-bu)2-2,2'-bpy)], showcases exceptional sensitivity and selectivity in detecting aluminum ions, making it suitable for environmental and biological applications. It exhibits reliable quantification in both methanol and aqueous samples, with remarkable accuracy validated by ICP-OES. Lastly, modifications to the Au3Pz3 complex synthesis enable the development of a silver ion sensor, paving the way for detecting silver ion leaching in real-life scenarios, such as silver nanoparticle-embedded bandages. The research extends to the synthesis of silver nanoparticles using various methods and foresees expanded in vitro and in vivo studies. These investigations collectively offer insights into the development of advanced sensing technologies with significant implications for a wide range of practical applications.
Date:
December 2023
Creator:
Perera, Nawagamu Appuhamilage Kasun
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Teacher Perceptions of Innovative Learning Environments: Implications for Leaders
Innovative Learning Environments are increasingly built and implemented in schools, but are not necessarily being used according to designers' intentions. The goal of this study was to examine teacher perceptions of the innovative learning spaces they were charged with using and to determine if they were being used effectively and as designed. The research was guided by three basic questions: what were the teachers' perceptions of these spaces, was the teacher pedagogy need to change to accommodate the space, and did the teacher feel support by campus leadership. The fourth research question centered around the goals and vision of the design team that created the innovative learning space. The crux of the issue was that the districts vision for the space came to fruition once the teachers were in the actual space with the students. This qualitative study interviewed seven teachers in the educational setting and separately interviewed the design team. The results indicated that some of the teachers were unaware of the definition of an innovative space and believed that they were utilizing the space in ways that met the designs of the campus leadership. Furthermore, teachers felt the new designs caused a classroom management issue as well as …
Date:
December 2023
Creator:
Elliott, Robyn Kaye
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Teacher Preparation Programs: A Critical View
Individuals who desire to pursue the teaching profession have two primary paths for preparation: either completing a traditional college-based program or an alternative program. A generic qualitative inquiry methodology was used to explore the perspective of novice teacher participants on how prepared they felt based on the preparation program they participated in. Data gathering was accomplished through a novice teacher survey and seven one-on-one semi-structured interviews. The data from the novice teacher survey revealed that college-based preparation participants felt sufficiently prepared 33% of the time, while the alternative preparation participants felt adequately prepared 59% of the time. College-based preparation participants in the semi-structured interviews reported that observing veteran teachers was invaluable in preparing for the first year of teaching. The alternative certification program participants revealed that teaching was significantly more demanding and that teachers face challenges beyond delivering effective lessons. The alternative preparation program offered an extensive library of lessons and learning modules; however, there was little to no guidance on selecting which lessons and learning modules to review. Participants indicated that improvement in the support provided to the novice teacher during the first year is vital when transitioning from theory to practice. Continued examination of teacher preparation programs is …
Date:
December 2023
Creator:
Bragg, Ronald Dewayne
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Testing the Perceived Efficacy and Value of a Solar-Powered MoodleBox to Provide Sustainable Educational Support to Underdeveloped Areas
The dissertation aims to expand access through a low-cost technological innovation system S-MLS to learners in underdeveloped areas with difficulties in accessing education. Technology is advancing rapidly. However, many parts of the world need access to educational advances, which are hindered due to war, political situations, and low literacy and income. A qualitative phenomenological approach explores the lived experience using the solar-powered computing and learning management system (LMS) to support the development of educational access in underrepresented societies, developing countries, and rural areas where access to proper classroom education is non-existent. Proof of concept is used with a group of students in a rural area, a developing country, and within an underrepresented population to check the feasibility of using the equipment in a real-world setting. A technology acceptance model would be used to identify the user's perceived interest and user acceptance. The community of inquiry theory would find the first-hand experience and point of view of the learner. The student group interviews would be through semi-structured interviews. Observations, surveys, video/audio recordings, and artifacts would be gathered for further analysis. The data collected would be analyzed using interpretative phenomenology analysis (IPA), close examination, and management of development themes through thoughts, observations, …
Date:
December 2023
Creator:
Samaranayake, Pradeepika Nelumdini
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library