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"The '91 Roos"
The ‘91 Roos is a sports documentary focused in Killeen, Texas. exploring the 1991 Killeen Kangaroos high school football team and their journey to their city's one and only state championship in football. Killeen is a small central Texas town that is directly adjacent and provides support to Ft Hood, one of the world's largest military bases. With the Persian Gulf War raging in 1991, soldiers that lived in Killeen were being sent off to fight, leaving the city almost like a ghost town. In October 1991, the Luby's Massacre occurred in Killeen, bringing the already depleted city further down by tragedy. At the time, this was the worst mass shooting in US history. This high school football team went on a fairy tale type of run during their 1991 season, resulting in winning a state title and bringing big hope back to a small town in need. Using direct interviews, narration and archival footage, this film provides an emotional yet inspirational look at a small town football team and their improbable season.
Date:
August 2022
Creator:
Graham, Derwin Anthony
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
"Access Points"
Access Points explores the different relationships that humans have to land, focusing on the various ways that the area known as the Wichita Mountains Wildlife Refuge is used, appreciated, and preserved by disparate groups. The natural beauty of this Wildlife Refuge and its striking appearance amidst encircling plains makes it a popular destination for many groups of people, including the local rock-climbing community and generations of indigenous peoples whose connection with this land is as deep as it is longstanding. While climbing organizations have long had to negotiate access and rules regarding climbing within the park, members of the Kiowa community negotiate a much different relationship to a natural area that is now managed by the United States government. These disparate voices, identities, and ways of thinking about land all impact the modern-day Wildlife Refuge in terms of its appearance, individuals' access to the land, and the conservation efforts happening there.
Date:
August 2022
Creator:
Dye, Aaron Charles
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Adjustments in Business Operations during the COVID-19 Pandemic: An Analysis of Natural and Cultural Resource Sites in Texas
This research expands the theoretical concept of human adjustment to floods established by Gilbert F. White and incorporates his adjustment concept to examine the range of adjustments in business operations adopted by Texas' natural and/or cultural resources sites during the first year of the COVID-19 pandemic. This mixed-methods study consisted of an online survey with a follow-up semi-structured phone interview. The survey data was analyzed using descriptive statistics and the interview data was inductively coded for thematic analysis as well as quantitative and qualitative content analyses. Specifically, this study identifies the adjustment measures undertaken by these entities to maintain business operations while reducing the virus spread; analyses the direct and indirect factors influencing adjustment measures; examines new business opportunities that emerged from these adjustments; and evaluates whether the impact of COVID-19 on these entities varied in terms of entity characteristics. Findings indicate that cultural and/or natural resource sites implemented adjustments to maintain their fiscal stability and/or to protect human health; these serve as direct underlying motivating factors for these entities. To support these direct measures, indirect factors influenced the operations thus required adjustments such as staffing, volunteers, technology, funding, and donations. Additionally, new opportunities in business practices emerged while implementing …
Date:
August 2022
Creator:
Tamima, Salvesila
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Advances to Convolutional Neural Network Architectures for Prediction and Classification with Applications in the First Dimensional Space
In the vast field of signal processing, machine learning is rapidly expanding its domain into all realms. As a constituent of this expansion, this thesis presents contributive work on advancements in machine learning algorithms by building on the shoulder of giants. The first chapter of this thesis contains enhancements to a CNN (convolutional neural network) for better classification of heartbeat arrhythmia. The network goes through a two stage development, the first being augmentations to the network and the second being the implementation of dropout. Chapter 2 involves the combination of CNN and LSTM (long short term memory) networks for the task of short-term energy use data regression. Exploiting the benefits of two of the most powerful neural networks, a unique, novel neural network is created to effectually predict future energy use. The final section concludes this work with directions for future works.
Date:
August 2022
Creator:
Kim, Hae Jin
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Aristotle on Being Triggered: A Question on Moral Virtue
I argue that Aristotle aids in understanding the tension between the political art and moral virtue through his examination of courage in The Nicomachean Ethics. The end of the political art is to habituate the city and citizens towards "the good." Aristotle examines five held opinions of non-courage, requiring that we reflect on our own vices. I describe how Aristotle prepares his readers for the task of examining the political art. I then view courage found in the citizen and spiritedness as an example of two common opinions where individuals are inclined towards pleasure, as opposed to being inclined to the noble. To conclude, I show that Aristotle provides opinions of non-courage to emphasize how institutions are, and must remain, a foundational part of society.
Date:
August 2022
Creator:
Barnes, Kenlea Rayne
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Artificial Neural Network Based Thermal Conductivity Prediction of Propylene Glycol Solutions with Real Time Heat Propagation Approach
Machine learning is fast growing field as it can be applied to solve a large amount of problems. One large subsection of machine learning are artificial neural networks (ANN), these work on pattern recognition and can be trained with data sets of known solutions. The objective of this thesis is to discuss the creation of an ANN capable of classifying differences in propylene glycol concentrations, up to 10%. Utilizing a micro pipette thermal sensor (MTS) it is possible to measure the heat propagation of a liquid from a laser pulse. The ANN can then be trained beforehand with simulated data and be tested in real time with temperature data from the MTS. This method could be applied to find the thermal conductivity of unknown fluids and biological samples, such as cells and tissues.
Date:
August 2022
Creator:
Jarrett, Andrew Caleb
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Beyond the Hold: The Evolution of the Ship in African American Literature
In the wake of a disturbing decades-long trend in both print and visual media—the appropriation of Black history and culture—another trend is observed in works of African American fiction: the reclamation of the appropriated imagery, in both neo-slave narratives and works of Afrofuturism. The image focused on specifically in this paper is that of the ship, which I argue serves at least two identifiable functions in Black fiction: first, to address the historical treatment of Africans and their American descendants, and secondly, to demonstrate Black progress and potential. Through an exploration of three works of African American fiction, works that take their Black protagonists beyond the ship's dreadful hold, the reader can see the important themes being channeled: Charles Johnson's Middle Passage sets a course on how to arrive at true freedom, enacting a process of Black liberation that begins with learning how to survive "in the wake," a concept derived Christina Sharpe's work In the Wake: On Blackness and Being. Rivers Solomon's An Unkindness of Ghosts demonstrates not only the effects of "the hold," but how the hold itself has evolved from its origins on the slave ship; as new holds are constructed and demanded by society, rebellion is …
Date:
August 2022
Creator:
Najera, Joel Luis
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
"Come along, Floyd!" An Ethnographic Study of the Crystal Cave District at Mammoth Cave National Park
Cultural landscape reports (CLR) are commonly utilized by the National Park Service to define the significance of cultural landscapes. This thesis explores the importance of documenting not only physical characteristics of cultural landscapes, but the cultural elements such as associated values, beliefs, ideas, and traditions. My applied research was conducted for Mammoth Cave National located in Mammoth Cave, Kentucky and focuses on the Crystal Cave District. Research explores data collected through archival research, a PPGIS exercise, and ethnographic interviews to examine the experiences and relationships between research participants and the Crystal Cave District. Research findings highlight the ways in which concepts such as place, history, identity, and tradition can act as significant factors in shaping environmental relationships today.
Date:
August 2022
Creator:
McClain, Elisabeth Ray
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Community Perceptions of Wildfire Risk and Mitigation in Colorado Springs
This research assessed wildfire mitigation and risk perceptions in two neighborhood in Colorado Springs, CO. Semi-structured interviews were used during transect walks with participants. The research compared residents' perspectives to fire personnel's knowledge.
Date:
August 2022
Creator:
Caruolo, Cara Danielle
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Consider the View (La Due)
Visual impairment/blindness is not often discussed in a media space, and the community is often left out and forgotten otherwise in the course of history. Through documentary filmmaking, Consider the View (La Vue) provides an artistic exploration of blindness by using the camera as optical power and other forms of art. Viewers experience a new perspective of what it means to be visually impaired.
Date:
August 2022
Creator:
Jordan, Tamia Chantel
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Decision-Making Process of Transitioning to a Regenerative Agricultural System: How Disaster Resilience Fits In
Regenerative agriculture, a soil health focused alternative to conventional agriculture, has been increasingly popular among producers and consumers for its ability to produce nourishing food while also prioritizing the health of the environment. The practices used within this style of farming and ranching also have benefits that make operations more resilient to various agricultural hazards. Few studies have addressed the role of resiliency in the transition process to regenerative agriculture. The purpose of this study was to explore the role of disaster resilience in the decision-making process farmers and ranchers use as they transition to regenerative agricultural practices. Drawing from qualitative, semi-structured interviews with Texas ranchers that use regenerative methods, four major themes were found. First, climate related hazards are a recurring issue because agricultural operations are continually threatened by the same hazards. Next, the food system is in dire need of change, as producers recognize a major problem in the food system, and it is leading to a food insecure future. Also prevalent, disaster resilience is a built-in benefit because regenerative practices result in the creation of systems that build resilience. Finally, learning opportunities are expanding as an increased interest in regenerative agriculture is providing more opportunities for both …
Date:
August 2022
Creator:
Boyle, Cassidy
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Development of an Enclosed Evaporation Chamber Utilizing a Fresnel Lens Solar Concentrator
This thesis project investigates the configuration of an enclosed evaporation chamber with the intention of converting seawater into potable freshwater. The evaporation chamber's sole heat source is provided by a Fresnel lens, located above the chamber, which concentrates sunlight onto a 3-inch diameter focal plate built into the core of the chamber. The design of the evaporation chamber is modeled after a solar still and is coupled with a heat exchanger to boost efficiency of the system. The chamber was designed with the objectives of being portable, lightweight, low cost, corrosion resistant, interchangeable, and size convenient with the goal of producing 1 Liter of freshwater per hour of operation. The evaporation chamber consists of two primary components, a core and an attached arrangement of fins, all of which are heated via the Fresnel lens. A consistent intake of 2 grams/second of saltwater enters from the top of the chamber and is then gravity fed across the fins. Fin orientation has been designed to inhibit the flow rate of water within the chamber, maximizing the surface area of contact with the heated fins. The evaporation chamber was modeled through SOLIDWORKS and underwent a physical optimization study to reduce material usage while …
Date:
August 2022
Creator:
Planz, Bridger T
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Dido the Chaste: A Characterization of Dido in Spanish Baroque Pasticcio Opera
The Dido myth has evolved and been adapted by many cultures over the centuries. Each Dido was altered to fit the needs of its creator, their society and customs. Despite these variations, every Dido retelling is derived from the Virgilian Dido, historical Dido, or chaste Dido narrative, or a combination of these stories. The pasticcio opera, Ópera armónica al estilo italiano que se intitula Dido y Eneas draws on the general Virgilian plot but emphasizes the chaste Dido narrative. The changes in the plot of Dido y Eneas reflect societal gender norms, theatrical conventions, and historical figures, specifically Queen María Luisa Gabriela, from eighteenth-century Spain. The Dido of Dido y Eneas can be divided into two main personas: Dido the queen and Dido the lover. Her arias, which come from preexisting Italian operas, convey the dramatic text very well. However, no matter what persona Dido portrays, she never fully loses control nor lets her passions rule her actions. Even in the moments before her suicide, her aria, "Punta intrepida," lacks the overt emotionality found in the popular Dido lament made famous by Purcell. This thesis aims to situate Dido y Eneas within the history of the Dido narrative and gender …
Date:
August 2022
Creator:
Zimmerman, Camila
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Digital Covens: An Ethnographic Examination of the Intersection of Paganism and Social Media
This paper examines how does within the Pagan community uses social media, specifically Facebook groups, as a way of community building, knowledge gathering, and platform for digital ritual. The research was based on a combination of interviews and observational data gathered from various groups. To help analyze the data gathered, theoretical approaches of both mediatization and materiality are employed to understand how digital spaces are being used as a tool for those within the Pagan community within their religious tool-kit, as well as understanding how digital landscapes are being used in order to conduct ritual.
Date:
August 2022
Creator:
Ferguson, Carlise Pamela
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Efficient Convolutional Neural Networks for Image Processing Applications
Modern machine learning techniques focus on extremely deep and multi-pathed networks, resulting in large memory and computational requirements. This thesis explores techniques for designing efficient convolutional networks including pixel shuffling, depthwise convolutions, and various activation fucntions. These techniques are then applied to two image processing domains: single-image super-resolution and image compression. The super-resolution model, TinyPSSR, is one-third the size of the next smallest model in literature while performing similar to or better than other larger models on representative test sets. The efficient deep image compression model is significantly smaller than any other model in literature and performs similarly in both computational cost and reconstruction quality to the JPEG standard.
Date:
August 2022
Creator:
Chiapputo, Nicholas J.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Engineering Cardiac Organoid Vascularization via Fluid Shear Stress and Vascular-Promoting Growth Factors
Cardiovascular disease (CVD) is the leading cause of death internationally. Efforts to decrease CVD death has been explored through stem cell technology, specifically organoid formation. Current cardiac organoid models lack the vascular networks for nutrient supply and maturation. In this study, pillar perfusion technology is used to fabricate cardiac organoids and induce vascularization via dynamic culturing and the addition of vascular promoting growth factors (GFs). In addition to this study, a millifluidic chip is engineered for shear stress application via flow simulations and experimental flow analysis. We successfully optimized the millifluidic chip to achieve fluid shear stress of 20mPa and validated through particle tracking velocimetry using 0.1um diameter beads under flow. The results of cardiac organoids displayed contraction and growth of endothelial cells (ECs) under dynamic flow with GFs. In addition, smooth muscle cells (SMCs) displayed growth via GFs in both dynamic and static culturing. Although vascular networks were not present in all conditions of this experiment, this thesis can serve a basis for searching other methods of inducing vascularization.
Date:
August 2022
Creator:
Huerta Gomez, Angello
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
English Loanwords in French: A Corpus-Driven Analysis of Corporate Websites
This thesis explores the use of English loanwords in French discourse found on seven France-based corporate websites and the website of one government ministry in France. The following overarching question guided this research project: To what extent are English loanwords used in French for marketing purposes or other reasons? As expected, the results varied greatly from website to website, but it is clear from my analysis of this relatively small corpus that the use of English is widespread in French discourse. In this thesis, I allowed myself to engage in some speculation based on my own background and experiences. I acknowledge that further research is needed in order to provide a more comprehensive analysis of English loanwords in French since this is a very complicated topic that can be approached from many different angles.
Date:
August 2022
Creator:
Padilla, Werner G
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
An Evaluation of Differential Attention on Preferred Topics of Conversation for Adults with Autism Spectrum Disorder
Extensive speech on preferred conversation topics may limit conversations with others. For individuals with ASD, extensive speech on a topic may be a form of restricted or repetitive behavior that may be addressed through skill building. However, previous research suggests that skill building may not be necessary if the behavior is sensitive to differential reinforcement contingencies. To evaluate the effects of differential reinforcement in the form of attention on conversation topics, we replicated the results of Stocco et al. by assessing sensitivity to conversational attention with participant-only topic initiations. Additionally, we extended the procedures by evaluating the effects of topic initiations from the participant and the experimenter (shared initiations). Similar to previous research, our results yielded that speech was sensitive to conversational attention across all participants. That is, differential reinforcement contingencies altered levels of speech on topics of conversation, indicating that differential reinforcement procedures may be sufficient in addressing performance deficits. Lastly, we assessed participant preference for participant-only initiation or shared initiation conversations.
Date:
August 2022
Creator:
Castillo, Michelle Victoria
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
An Explanation of Racial Attitudes Utilizing Intergroup Threat Theory and Group Empathy Theory
This project examined the effects of threat perceptions and group empathy on racial outgroup attitudes. The relationship between threat perception and increased racial prejudice has been well established within the literature, but the effect of group empathy within this dynamic has been largely undocumented. The following study utilizes data from the American National Election Study 2020 Time Series to analyze racial outgroup attitudes among subsamples of Blacks (n = 726), Hispanics (n = 762), and Whites (n = 5,962). Along with threat perception, group empathy was found to be a salient predictor of outgroup attitudes. These results suggest that an effective technique to reduce negative outgroup attitudes would aim to reduce perceptions of outgroups as threatening and increase group empathy.
Date:
August 2022
Creator:
Larrison, KayLynn Marie
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Exploring Functional Interdependence of Mands, Tacts, and Intraverbals after Brain Injury
One goal of this study was to evaluate the emergence of mands and intraverbals following tact acquisition for individuals with aphasia due to acquired brain injury. A second goal was to evaluate the transfer of shortened latencies as a function of tact training across untrained operants. In Study 1, the dependent measure was accuracy of responding and in Study 2, the dependent measures were rate and latency of responding. Participants for Study 1 were two uninjured adults (pilot) and two adults with brain injury (ABI). Both sets of participants were directly taught to tact up to 6 stimuli. Once tacts were acquired, the response forms were assessed under mand and intraverbal conditions. All pilot participants and one ABI participant showed mand transfer for all stimuli. Tact to intraverbal transfer varied across participants. One adult with brain injury served as a participant for Study 2. Fluency training was used to teach tacts for 15 stimuli. Response latencies were gathered for all operants before and after training. The participant met the designated aim (rate of responding) and showed a decrease in latencies for tacts and untrained intraverbals. Changes in mand latencies varied. Fluency gains showed partial retention. Results from Study 1 provide …
Date:
August 2022
Creator:
Baltazar-Mars, Marla
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Exploring the Circularity of Fast Fashion Using Goal Framing Theory
The COVID-19 pandemic has challenged fast fashion to circular products to prevent excessive overstock in responding to consumers' shift toward less consumption. These shifts are worth studying as consumers are willing to partake in pro-environmental behaviors, leading to a circular business model for fast fashion. This study explores how sustainable knowledge and consumer goals toward circularity can influence behavior toward circular consumption based on the goal framing theory. An online survey employing the Prolific survey platform was conducted with 300 fast-fashion consumer panels. The quantitative approach (ANOVA, cluster, factor, multiple regressions analyses) supported that consumers' framed-goals toward circularity significantly influence their intention to purchase fast fashion products. Fast-fashion consumers have prioritized reliable communication and pro-environmental goals to respectfully purchase circular products and 5Rs behaviors. They perceived circular economy and environmental knowledge as deciding factors in their pursuits of circularity. It corresponds to the benefits of lucrative circular business applications for fast fashion.
Date:
August 2022
Creator:
Wilbourne, Kathy
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Heat Transfer Analysis of Bio-Printed Tissue Mimicking Material Mixed with Silver Nanoparticles
Novel tissue mimicking materials have been developed for cancer treatment research. In the present research work, the tissue mimicking material is printed using 3D bioprinting technology. The nanoparticles are homogeneously mixed with tissue mimicking materials to enhance the heating capacity. The thermal conductivity of tissue mimicking materials is measured using a micropipette thermal sensor (MTS). Further, the optimal value is identified based on optimization technique and incorporated into a theoretical model to predict the surface temperature of microsphere. The heat conduction governing equation with Lambert law is numerically solved using COMSOL Multiphysics software. To validate the present simulation results, the experiments are conducted using a continuous laser system.
Date:
August 2022
Creator:
Chandrasegaran, Jedeshkeran
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Influence of Social Responsibility on Consumer Behavior in Small Business Restaurants
This research quantifies the mediating effects of consumer satisfaction on the social responsibility dimensions of philanthropy, economics, environmental, ethical, and legal regarding the behavioral outcomes of consumer loyalty while developing a new model (small business social responsibility, SBSR) to measure these effects. The purpose of current study is to provide a contemporary perspective of the influence of organizational social responsibility strategy on consumer behavior regarding three specific characteristics: enterprise size (small business), population demographic (Generation Z), and type of industry (restaurant industry). The questionnaire was developed, modified, and designed to measure the mediating effects of consumer satisfaction on SBSR initiatives and the behavioral outcomes of consumer loyalty. Data were collected from January 15 to March 15, 2022. The sample for this study consisted of 233 students from a large public university in the southwestern United States. The study found social responsibility initiatives do impact consumer behaviors, although not all the initiatives studied had a significant effect on consumer satisfaction and ultimately on consume loyalty. Environmental initiatives had the strongest significance levels on both consumer satisfaction and consumer loyalty. Conversely, the initiatives of economics and legal had no significant influence of both consumer satisfaction and consumer loyalty. The study gave evidence …
Date:
August 2022
Creator:
Holladay, Travis John
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Investigating the Effects of Teaching on Response Allocation by Implementing a Changing Criterion Procedure
The study of choice and allocation has often focused on certain parameters of reinforcement, but rarely on historical variables. The goal of this study was to investigate the potential effects of gradual vs. abrupt teaching methods on future response allocation. A secondary goal was to see if the results of teaching-method manipulations might be correlated with the parameters that the teaching method produced, specifically unit costs, rate of reinforcement, or error rates. Results indicate that these teaching procedures can produce transient shifts in allocation, but not in a consistent direction. Neither unit cost nor rate or reinforcement alone can account for observed response allocation shifts after training. Researchers saw that subjects reliably shifted towards a manipulanda that produced higher rates of errors, therefore investigating the influence that error rate (or types of errors) may have on response allocation may aid in general teaching method preferences. Future research could focus on the combination of historical procedural variables and current variables that could determine response allocation.
Date:
August 2022
Creator:
Krilcich, Rachel AnnaSoo
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library