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Discriminative Control of Behavioral Variability in Video Game Play
Creativity can be a useful skill in today's classrooms and workplaces. When individuals talk about creativity, it's unclear what the controlling variables are when we tact behavior as "creative." Research in understanding the processes behind behaviors that are considered "creative" would assist in identifying functional relations and provide insight on how to teach creativity. Since creativity is often described as doing something different from the norm, behavioral variability may be a potential aspect of creativity. This study aimed to replicate previous findings by investigating the effects of discrimination training in a multiple schedule of varied and repetitive responding in the context of a video game. Participants played through a 2D online video game made in Bloxels. Different alternating-colored platforms served as the discriminative stimuli for the vary and repeat components. Three parameters of variability were measured (e.g., left jumps, right jumps, and double jumps). The results of the study indicate that participants were able to learn the discrimination of when to repeat and vary their responses depending on which colored platform they encountered.
Date:
May 2023
Creator:
Arias, Gabriela Isabel
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Revving Up Revenue: Unlocking the Power of Cancellation Policies on Booking Intentions
Over the years, last-minute cancellations and no-shows have presented difficulties for the hospitality sector, negatively affecting hotel operations and revenue. The cancellation policies of hotels have changed significantly as a result. These rules have been modified to act as "price fences" as a result of revenue management strategies used in the hotel industry. This study aims to find out how various cancellation policies impact consumers' perceptions of risk and intent to reserve hotel rooms at various times. The study provides insight into the factors that affect consumer behavior and choices for hospitality goods and services by examining these elements. The results of the study offer some understanding into how hotels and other hospitality businesses can use cancellation policies to customize their marketing strategies to meet consumer needs and preferences while successfully managing revenue and profitability.
Date:
May 2023
Creator:
Vo, Le Bich Ngoc
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Quantification of the Seasonality and Vertical Dispersion Environment of PM2.5 Variation: A Comparative Analysis of Micro-Scale Wind-Based Buffer Methods
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 concentrations is often ignored and on-road circle buffers are used. To understand variables most critical to PM2.5 concentration variation, an air pollution sensor and GPS unit were affixed to a bicycle to sample for variables over three seasons (spring, summer, fall). Samples were taken on a route during the weekdays at four targeted hours (7AM, 11AM, 3PM, and 7PM) and joined with meteorological data. 3D morphology was assessed using LiDAR data and novel wind-based buffers. Wind speed only, wind direction only, and wind speed and direction buffers were computed and compared for their performance at capturing micro-scale urban morphological variables. Zonal statistics were used to compute morphological indicators under different wind assumptions in seasonal ordinary least squares regression models. A comprehensive wind and buffer performance analysis compares statistical significance for spatial and temporal variation …
Date:
May 2023
Creator:
Ray, Noah R.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Influence of Particle Morphology and Heat Treatment on the Microstructural Evolution of Silver Inks for Additively Manufactured RF Applications: A Comparison between Nanoflake and Reactive Inks
In recent years, advancements in additive manufacturing (AM) technologies have paved the way for 3D-printed flexible hybrid electronics (FHE) and created opportunities for extending these gains to RF applications. However, printed metal interconnects and devices are typically characterized by high porosity and chemical impurities that significantly limit their electrical conductivity and RF performance compared to bulk equivalents. Using direct ink writing (DIW), two silver inks, a nanoflake suspension and a nanoparticle-reactive ink, were investigated to understand the relationship between free interfacial energy, sintering behavior, DC conductivity, and RF loss. The printed silver samples were characterized using scanning electron microscopy, x-ray diffraction, and x-ray photoelectron spectroscopy to monitor microstructural evolution, grain size and orientation, and chemical purity as a function of heat treatment temperature. Three heat treatments were applied to each ink: the manufacturer's recommendation, 225°C for 30 minutes, and 350°C for 30 minutes. Four-wire structures and coplanar waveguides were printed to compare the DC and RF performance up to 18 GHz, respectively. The results show that ink formulations that facilitate larger grains, high density, and good chemical purity have superior RF performance. A low resistivity of 1.4 times bulk Ag, average of 0.8% greater RF loss factor than evaporated Ag, …
Date:
May 2023
Creator:
Summers, Jason Masao
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
"Mexican Goodbye"
Mexican Goodbye is a collection of poetry that interrogates the dichotomy of a family fractured in conjunction with a speaker's coming of age. The collection reckons with divorce and the subsequent dissolution of the speaker's Mexican American family. Individual poems deal with sisterhood, daughterhood, Chicanismo, grief, the intergenerational impact of the immigrant experience, and inherited trauma. The titular poem illustrates the typical Mexican goodbye, a Latine despedida which can last hours, extended by continued chisme and prolonged conversation. It is this cultural phenomenon that the collection endeavors to encapsulate by lingering in narrative, listing childhood experiences, and allowing the speaker to yearn to return and remain in the past. Ultimately, the speaker desires to linger in the farewell.
Date:
May 2023
Creator:
Hernandez, Xaviera
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Healing Miracles in Ancient Jewish and Early Christian Literature
Jesus was a healer, but what may not be as obvious is that he started a legacy of healing. He passed on his skills and abilities to his followers at least three times. Though not as frequently, they continued to heal through the Book of Acts. The legacy continued in the Apocryphal Acts and other apocryphal materials spanning the early centuries of the common era. Secondary literature looks at modern scholarship and leans heavily into Rabbinic literature. Up to this point, other English-language works in healing have sorely lacked luster in providing. The exploration of the healing legacy of Jesus shifted to meet the skills and needs of the healers, patients, and communities involved. Further, the healings had a substantive resultant impact on various levels of socioeconomics for the parties, which is explored by reexamining each group type of healings, from lameness and paralytics to possession and resurrection, and more. The hope is that taking a holistic approach to these healings as possible will allow readers a new way of experiencing the early common era and these events that permeated everyone's lives at one time or another.
Date:
May 2023
Creator:
Tompkins, Lora E.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Lived Experiences in the Pecan Capital of the World: Oral Histories with People of the San Saba Pecan Industry
The growth of the pecan industry in San Saba offers a microcosm into the evolution of the industry as a whole. Individual ingenuity in agriculture, business, and technology carved a path for success for the native nut in San Saba. Thanks in part to the efforts by founding families of the area and their descendants, the pecan has become a widely-used ingredient in holiday sweets of the American South and a symbol of Texas identity. Yet, the industry's development and the lives of the people who have cultivated it are stories that have remained largely untold. Through oral histories with family pecan growers, descendants of migrant farm laborers, and others working in the industry as well as primary sources such as those from early pecan sales catalogs, United States Department of Agriculture and other government documents, this project will trace the history of the pecan in San Saba – including how it has shaped the natural landscape and the individual and collective identities of San Saba and its residents.
Date:
May 2023
Creator:
Noel, Heather N.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Evaluating an Exchange Program for the Treatment of Problem Behavior Maintained by Access to Tangibles
Previous studies, typically with children, have used delay-tolerance training to treat problem behavior maintained by access to tangibles. This often involves physical prompting and waiting rather than exchanging, two practices that may not be possible or relevant to adults with intellectual disabilities (ID). For many adults with ID in residential settings, exchanging items, rather than waiting per se, may be evocative for problem behavior. In the current study, I evaluated an exchange program to treat problem behavior maintained by access to tangibles for adults diagnosed with ID at a residential facility. I measured the latency to exchange low- and high-preference items following a request for the item and the individual's problem behaviors. Results demonstrated that the exchange program increased relinquishing of an item while decreasing the rate of problem behavior. This analysis provides another method to treat problem behavior maintained by access to tangibles for adults without using physical prompting.
Date:
May 2023
Creator:
Bauer, Melanie Sue
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Intermodal Stimulus Compounding with Ambient Odors Produces Averaging in Rats
In an organism's natural environment, there are always an uncountable number of stimuli, and stimulus features, available to gain control over behavior. When these component stimuli are presented simultaneously, this new stimulus compound can occasion a previously unseen effect on behavior. Stimulus compounding is a method used to better understand how variables in stimulus features may impact the final effect on an organism's responding when presented with a stimulus compound. While stimulus compounding experiments are often conducted using intermodal tone and light stimuli, it is conducted far less often using intramodal stimuli, potentially due to the competing stimulus features of same-modality stimuli. Even less conducted research has been done using two odor component stimuli, despite the large impact odor has on many species' behavior. The purpose of this study was to conduct a stimulus compounding experiment using intramodal ambient odor stimuli in rats, to see what kind of effect a mixed odor compound would have on the subject's behavior. This was done using a wind tunnel designed operant chamber, where both subjects were trained to respond to independently presented odor stimuli. Following training a compound mixture of both component odors was presented to the subjects. The results of this study …
Date:
May 2023
Creator:
Kirkland, Sophia B.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Experience Effects on Risk Perception and Protective Action Decision Making when Facing a Rare Tornado Threat
Damaging tornadoes are possible in all U.S. regions beyond the traditionally recognized "tornado alleys" in the southern plains and mid-south. Hence, this research examines how study participants respond to rare tornado events. Specifically, how disaster experiences affect risk perceptions and protective actions when facing a rare tornado event. This study used the protective action decision model (PADM) as the theoretical lens to investigate this issue. The PADM shows that personal characteristics, including personal disaster experience, could affect risk perceptions and how protective action decisions are made. This study applies the theory by recruiting 136 human subjects from the state of Washington to participate in a social experiment. The participants take part in a study that includes hypothetical tornado scenarios, ranging from thunderstorm warning to a tornado emergency then answering questions regarding the presented scenarios. Findings suggest that disaster experience and demographics influence how people perceive and respond to tornado disasters. Overall, people with direct and indirect tornado experiences showed significantly lower risk perceptions in the early stages of the threat when compared with those without any tornado experiences. Their tornado risk perceptions later increased when the threats were higher, and they tended to be more complacent regarding protective actions. This …
Date:
May 2023
Creator:
Stander, Barend
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Colonial Subject in the Early British Novel: Revisiting Colonial Captivity in "Robinson Crusoe"
Scholars today deem Robinson Crusoe the first British novel. Defoe's construction of Crusoe as the atypical British traveler asserts his collective subjectivity within the framework of intimate personal experiences, accentuating his individualism. Yet, as scholars of Orientalism and Transatlantic theory can attest, calling Robinson Crusoe the first novel provides problematic methodologies that arise from affiliating the novel form to a structure associated the British colonialism and fashioning a "superior" British subject. In this essay, I work to emphasize the hybridity present within the novel, utilize historical context to provide a voice to marginalized Indigenous Americans to show how the format relies upon a relationship between collectivism and individualism, assert Indigenous voices matter in the novel, and analyze the relationship of a new collectivism that arises from narratives that cross into American spaces.
Date:
May 2023
Creator:
Kunasek, Caleb John
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Modeling of Hypertrophic Cardiomyopathy Using hiPSC-Derived Cardiomyocytes with Static Mechanical Stretching
The heart is a dynamic environment that is constantly experiencing some degree of remodeling from the point of development, all the way through adulthood. While many genetic components may contribute to the overall presentation of hypertrophic cardiomyopathy (HCM), mutations occurring in sarcomere components such as myosin binding protein C3 (MYBPC3) are of the greatest popularity for study. Aiming to understand the mechanisms underlying heart diseases and to develop effective treatments that circumvent the need for direct patient study, we investigated the use of a platform to mimic the unique physiological conditions of HCM within an in-vitro setting. Following the induction of mechanical stretch on three human induced pluripotent stem cell derived cardiomyocyte (hiPSC-CM) cell lines containing mutations for MYBPC3 (WT, HET, HOM), all displayed HCM like reactions in calcium waveform. In conclusion, this system demonstrated the potential to apply a constant, static strain to healthy and mutated hiPSC-CMs for the MYBPC3 protein to model HCM in-vitro.
Date:
May 2023
Creator:
Rogozinski, Nicholas
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Faulty Stimulus Control and Reduced Treatment Integrity: An Analysis of Position Biases
When learning conditional discriminations, it is possible that faulty sources of control develop and interfere with acquisition. In 2021, Bergmann et al. reported the effects of different integrity levels (i.e., to what degree an intervention is implemented correctly) on undergraduate students' mastery of an arbitrary matching to sample task. They found that participants in the reduced integrity conditions at or below 80% were more likely to show stimulus biases (i.e., selecting a particular incorrect stimulus in the presence of a sample stimulus) than participants in integrity conditions at or above 85%. Bergmann et al. did not investigate whether participants were likely to show responding that was biased by position. A position bias is a type of faulty stimulus control that involves allocating more responses to one or a few positions (e.g., first, second, middle, left). We conducted a secondary analysis of data from Bergmann et al., and we used a chi-square goodness of fit test to identify which participants showed a position bias. We found 25 participants out of 168 with potential position biases. We used a chi-square test of independence to analyze the distribution of participants with biased responding by condition and did not find a statistically significant difference. …
Date:
May 2023
Creator:
Nielsen, Leif Erik
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Exploring Asian American and Pacific Islander Youth Identity Development in a Community Based Youth Program
Community based youth programs play a significant role in promoting positive youth identity development outside of the classroom. This can be particularly important for racialized groups such as Asian Americans and Pacific Islanders (AAPI). Based on ethnographic research conducted at Asian American LEAD, this thesis explores the effect of a five week summer program on AAPI youth identity development. Data collection methods include participant observation, a pre- and post- survey, and semi-structured interviews with staff, participants, and program alumni. The research findings highlight how ethnic and racial identity development is fostered through the creation of safe spaces, shared struggles with peers and staff, and recognition of one's AAPI identity.
Date:
May 2023
Creator:
Pham, Lena Trang
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Applying User-Centered Design to Build Trust and Enable Cross-Agency Data Sharing to Better Understand the Prevalence and Context of Human Trafficking in Alberta, Canada
This thesis describes a research study to understand the current state of human trafficking data collection practices and reporting in the province of Alberta, Canada, and gather end-user design considerations for cyberinfrastructure that will enable data sharing between multiple and diverse stakeholders. The research also examines the barriers to change and the needs of stakeholders to improve the collective understanding of human trafficking in the province. Virtual semi-structured interviews were conducted with nineteen organizations including law enforcement and community serving non-profit agencies. While the research resulted in design considerations for a cyberinfrastructure prototype, findings revealed the complexity of the human trafficking ecosystem in Alberta and suggestions for how the community of stakeholders can shift towards a sustained collaborative data sharing culture. This study responds to the need to collect actionable data from multiple sources to reflect the prevalence and context of human trafficking more accurately.
Date:
May 2023
Creator:
Muyres, Natalie Suzanne
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Rapid, Approximate Multi-Axis Vibration Testing
Sequential single-axis vibration testing strategies often produce over-testing when qualifying system hardware. Multi-axis excitation techniques can simulate realistic service environments, but the hardware and testing strategies needed to do so tend to be costly and complex. Test engineers instead must execute sequential tests on single-axis shaker tables to excite each degree of freedom, which the previous two decades of vibration testing literature have shown to cause extensive over-testing when considering cross-axis responses in assessing the severity of the applied test environments. Traditional assessments assume that the test article responds only in the axis of excitation, but often significant response occurs in the off-axes as well. This paper proposes a method to address the over-testing problem by approximating a simultaneous multi-axis test using readily-available, single-axis shaker tables. By optimizing the angle of excitation and the boundary condition through dynamic test fixture design, the test article can be tested using a Single-Input, Multiple-Output (SIMO) test in a way that approximates a Multiple-Input, Multiple-Output (MIMO) test. This paper shows the proposed method in simulation with a 2D finite element box assembly with removable component (BARC) model attached to springs with variable stiffness. The results include quantified test quality assessment metrics with comparison to …
Date:
May 2023
Creator:
Cramer, Ethan Savoy
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Racial and Ethnic Differences in Trait vs Occasion Unipolar Depression
Unipolar depression is a leading cause of disability and overall burden of disease for millions of individuals across the world. Depressive symptoms (e.g., depressed mood, anhedonia, fatigue, feelings of worthlessness, difficulties concentrating, etc.) can drastically affect an individual's life leading to occupational, social, and personal impairment. Past research shows significant ethnic and racial differences in depression rates and treatment. Moreover, previous literature has also begun to explore the multidimensional nature of depression, investigating its occasion-like (or episodic) and trait-like (or stable) factors. However, prior studies have not explored differences in occasion and trait depression by race or ethnicity, nor have they explored these questions in nurses, a group that faces substantial workplace stressors. To redress these gaps, the current study investigated trait and occasion depression in a large sample of nurses (N = 390) tracked across 12 months and aimed to understand whether trait versus occasion rates of depression differed by racial and ethnic minority status. Findings indicated substantially more trait depression (65.93%) than occasion depression (34.11%) across the year in nurses. However, there were no significant differences based on racial and ethnic minority status. Results highlight the importance of understanding depression as a much more stable aspect of an …
Date:
May 2023
Creator:
Gonzalez Zapata, Deisy
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Examining the Links between Narcissism Domains and Self-Concept Clarity, Self-Esteem, Attachment, Emotion Regulation, and Aggression
Narcissism is currently being redefined as a multidimensional construct. While some researchers hold that narcissism remains a unidimensional phenomenon, others have suggested that bi- and tridimensional conceptualizations may better represent the construct as well as align more succinctly with the experiences of individuals with varying levels of narcissistic traits. Also, since the latter conceptualizations offer a broader assessment of narcissistic tendencies, they may provide greater accuracy in identifying differing narcissistic phenotypes (e.g., malignant vs vulnerable). Given the variety in conceptualizations of narcissism, it remains an open area as to how their respective domains are associated with various risk factors and behavioral outcomes, particularly within antagonistic forms of narcissism. This thesis explored the multidimensional approaches to defining narcissism and examined the associations between narcissistic traits and attachment style, self-concept, self-esteem, emotion regulation, and aggression. Also, the current study explored how differences in college degree (business vs. psychology) and gender may influence the expression of narcissism and associations with attachment style. Overall, the study provides results relevant for a tridimensional view of narcissism and adds to the literature on narcissism's link with factors involved in personality pathology, gender, and choice of college degree.
Date:
May 2023
Creator:
Guillot, Skyler Trace
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Effects of Hypoxia Responses during Moderate- and Severe-Intensity Exercise Performed to Exhaustion
The purpose of the study was to investigate the effects of hypoxia responses during moderate- and severe-intensity exercise performed to exhaustion. Nine healthy university students, five men, and four women (mean ± SD, age, 23 ± 1 y; height 167 ± 8 cm; weight 73 ± 7 kg) performed a cycle ergometer test in normoxia and hypoxia conditions. Cardiorespiratory, metabolic, and perceptual responses were measured during moderate-intensity and during severe-intensity exercise. During moderate-intensity exercise, hypoxia exaggerates the cardiorespiratory and ventilatory responses and delays the attainment of the steady state VO2 kinetics. However, during severe-intensity exercise, compensatory responses were not adequate, oxygen demand was slightly increased and VO2 max was reduced in hypoxia affecting the overall performance. Therefore, the greater reliance on the anaerobic pathways could have a serious implication on the performance of the exercise over a wide range of intensities.
Date:
May 2023
Creator:
Kumawat, Mandeepa Mohanlal
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Evaluating Stack Overflow Usability Posts in Conjunction with Usability Heuristics
This thesis explores the critical role of usability in software development and uses usability heuristics as a cost-effective and efficient method for evaluating various software functions and interfaces. With the proliferation of software development in the modern digital age, developing user-friendly interfaces that meet the needs and preferences of users has become a complex process. Usability heuristics, a set of guidelines based on principles of human-computer interaction, provide a starting point for designers to create intuitive, efficient, and easy-to-use interfaces that provide a seamless user experience. The study uses Jakob Nieson's ten usability heuristics to evaluate the usability of Stack Overflow posts, a popular Q\&A website for developers. Through the analysis of 894 posts related to usability, the study identifies common usability problems faced by users and developers, providing valuable insights into the effectiveness of usability guidelines in software development practice. The research findings emphasize the need for ongoing evaluation and improvement of software interfaces to ensure a seamless user experience. The thesis concludes by highlighting the potential of usability heuristics in guiding the design of user-friendly software interfaces and improving the overall user experience in software development.
Date:
May 2023
Creator:
Jalali, Hamed
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Using Ethics to Teach Social Emotional Learning to At-Risk Youth: Recontextualizing Content and Determining Efficacy
At the Northwest Regional Learning Center (NRLC), an alternative high school in Arlington, Washington serving only at-risk youth, a new ethics course was conducted to assist students with their social-emotional learning development (SEL) and provide NRLC staff with greater insight into the lived experiences of students. Through semi-structured interviews, longitudinal ethical position surveys, and in-class observational ethnographic notes, this study presents shifts in student ethical positions over time as students engaged in this new course. By drawing from the knowledge at-risk students bring to school and focusing on behaviorism, progressive teaching theory, and constructivism, this course promoted open, student-led discussion that helped establish and build critical thinking skills, learn about perspectives in relation to others, and analyze various ethical positions. Through learning more about the lived experiences of their students, teachers at NRLC were able to contextualize and accommodate individual student behaviors, needs, and beliefs over their high-school experience. Drawing from student beliefs and experiences, the new course content was largely created by the students, providing at-risk youth an environment to openly share their beliefs while directly relating course content to their lives outside of school. As a representation of the power that social connection, redistribution of power dynamics in …
Date:
May 2023
Creator:
Stodola, Tyler James
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Self-Governance in a CPR Game: An Empirical Assessment of Elinor Ostrom's Eight Design Principles
Nobel laureate and economist Elinor Ostrom earned a Nobel prize in economic sciences in 2009 for her research on a community's ability to self-govern a common pool resource with the use of eight design principles. While Ostrom's accumulated efforts to analyze these principles and apply them to community resources have earned widespread recognition, these principles have yet to take off on a grand scale as a blueprint for self-governance systems globally. There is also a lack of empirical evidence that supports these principles as empirical investigations have yet to manipulate the principles individually or as an intervention package as independent variables. The purpose of the present study is to empirically test Ostrom's eight design principles in a tabletop game model of a community utilizing a common pool resource (CPR) by implementing as well as removing the principles within an adapted version of the board game Catan. In three groups, the CPR almost always fully crashed in baseline but not when Ostrom's principles were in place as game rules. Results indicated that Ostrom's design principles may organize participant responses and maintain resource levels over time more effectively than without Ostrom's rules applied.
Date:
May 2023
Creator:
Smith, Alexandra Zachary
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Laser Powder Bed Fusion of H13 Tool Steel: Experiments, Process Optimization and Microstructural Characterization
This work focused on laser powder bed fusion (LPBF) of H13 tool steel to examine microstructure and melt pool morphology. Experiments were conducted with varying laser power (P) in the range of 90-180 W and scan speed (v) in the range of 500-1000 mm/s. layer thickness (l) and hatch spacing (h) were kept constant. Volumetric energy density (γ) was calculated using the above process parameters. In order to find a relation between the recorded density and top surface roughness with changing process parameters, set of equations were derived using the non-dimensional analysis. For any chosen values of laser power, scan speed, hatch spacing and layer thickness, these equations help to predict top surface roughness and density of LPBF processed H13 tool steel. To confirm the universal relation for these equations, data of In718 and SS316L processed in LPBF was input which gave a R-square of >94% for top surface roughness and >99% for density. A closed box approach, response surface model, was also used to predict the density and surface roughness which allows only in the parametric range. Material microstructures were examined to identify the melting modes such as keyhole, transition and conduction modes. X-ray diffraction data revealed that there …
Date:
May 2023
Creator:
Channa Reddy, Sumanth Kumar Reddy
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
"Idle Flux": A Composer/Choreographer Collaboration
The following thesis documents the collaboration process behind Idle Flux, a collaboration between Samuel A. Montgomery, a graduate composer at University of North Texas, and Emily Jensen, a graduate choreographer at Texas Woman's University. Comprising an 18-minute stereo fixed media composition and choreography for seven dancers, Idle Flux seeks to challenge the traditional spatial relationship between audience members and performers through restructuring seating and stage arrangements while featuring immersive sound design in multiple venues. This thesis considers multiple sources of inspiration, including Immersive Van Gogh® Exhibit Dallas, John Jasperse's Canyon, Zoe | Juniper's BeginAgain, Francisco López's installations, Alexander Ekman's A Swan Lake, Imagine Dragons' "Enemy," Son Lux's "Dream State (Dark Day)," and Ryan Lott's dance compositions. This thesis also examines the interdependent collaborative relationship between composer and choreographer by considering the issues of autonomy and creative control, examining previous collaborative models proposed or implemented by Van Stiefel, José Limón and Norman Lloyd, John Cage and Merce Cunningham, Doris Humphrey and Norman Lloyd. In addition, this thesis discusses the creative process and foundational concepts behind the fixed media composition, including the use of sound samples, exploration of timbre through synthesizers, development of motives and musical language, and the spatialization of sound …
Date:
May 2023
Creator:
Montgomery, Samuel A.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library