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Analysis of Interrelationships between Climate Change and Cotton Yield in Texas High Plains

Description: The Texas High Plains produces the most substantial amount of cotton in Texas. The region is a semi-arid area with limited precipitation, and it is, therefore, susceptible to climate change. Cotton production in the Texas High Plains is mostly dependent on irrigation to increase yield. The overall goal of this research was to study the interrelationships between climate change and cotton yield using correlation analysis and also to study how climate has changed in the region using trend analysis. A three-decade data (1987-2017) was analyzed to establish the relationship between climate change and cotton and also to determine how climate has changed in the area over the last 30 years. The research used precipitation and temperature data to assess climate change.The results of this research showed that annual mean temperature has lesser impacts on cotton yield, and the correlation between annual precipitation and cotton yield is insignificant. It also found out that high rates of temperature at the boll opening stage of cotton growth results in decreased cotton yield and that at the boll development and boll opening stages, precipitation is needed. Again, the research indicated that, on average, there had been a significant increase in temperature, but precipitation trends are insignificant. About 60% of cotton acreage in the area is irrigated. Therefore the research also found out that increasing trends of cotton yield may contribute to the decline of groundwater in the area.
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Date: May 2020
Creator: Sarbeng, Lorenda
Partner: UNT Libraries

Anxiety in the Workplace: A Study of Different Anxiety Relief Methods for Hotel Employees

Description: There is a lack of anxiety relief methods used in the hospitality workplace. This study examines the effectiveness of two forms of anxiety relief through four different methods. The data collection took place in classroom environments at the University of North Texas and the University of New Orleans, both of which are located in southern USA. The independent variables are the recovery method, the mediator variables are restorativeness and emotional improvement, and the dependent variables are negative job affects, positive job affects, turnover intention, and job commitment. Professors were asked for some time during their lecture to conduct the experiment in a classroom environment during the students' class time. Eight classes were visited, with each class being exposed to a designated anxiety relief method. The anxiety relief methods consisted of using a virtual reality headset with sound, virtual reality headset without sound, nature pictures with sound, and nature pictures without sound. Results of 206 usable surveys indicated virtual reality recovery method evoked higher levels of restorativeness than picture recovery method. Restorativeness partially mediated the effects of positive job affects and job commitment. lastly, emotional improvement partially mediated the effects of negative job affects, positive job affects, and turnover intention.
Date: May 2020
Creator: Carrillo, Cindy
Partner: UNT Libraries

Assessing Agricultural and Hydrologic Potential of Ancestral Puebloan Community Centers using Open Source Data

Description: The Pueblo III period marks a critical shift in settlement location of Ancestral Puebloan people within the Mesa Verde region. Community centers during the Pueblo I and Pueblo II periods were built on mesa tops, whereas canyon-rims and alcoves became the preferred settlement location during the Pueblo III period. Beginning in the Pueblo I period, community centers consisted of linear roomblock villages. By the late Pueblo II period great house community centers influenced by the Chaco culture system spanned the Mesa Verde region. The Pueblo III period hallmarks the transition to canyon-rim villages and cliff dwellings. The location of these Pueblo III centers is thought to be related to the need for a defensive position on the landscape, and access to water sources. This shift in settlement locations undoubtedly led to change in the access to resources, such as water, arable farmland, and wild food plants and game. This study aims to evaluate whether the change in community center location impacted the accessibility to arable farmland and water sources immediately available to Ancestral Puebloan people throughout time. Specifically, several variables related to farming potential and hydrologic potential, including soil type, soil moisture, elevation, cropland suitability, distance to water sources, drainage density, and hydrogeologic units were evaluated. Nine community centers within the McElmo drainage area in southwestern Colorado ranging in age from the Pueblo II to Pueblo III periods were included in this study.
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Date: May 2020
Creator: Zarzycka, Sandra Elzbieta
Partner: UNT Libraries

Australian Mateship and Imperialistic Encounters with the United States in the Vietnam War

Description: This thesis attempts to prove the significance of the relationship between the United States and Australia, and how their similar cultures and experiences assisted creating that shared bond throughout the twentieth century. Chapter 2 examines the effects of the Cold War on both the United States and Australia, as well as their growing relationship during that period. There is some backtracking chronologically in order to make connections to important historical legacies such as the ANZAC Legend and settlement on the periphery of their respective societies. Then the first half of chapter 3 delves into the Vietnam War by examining the interactions of the American support unit, the 11th Combat Aviation Battalion, a helicopter unit that includes transports and gunships. Afterwards, the latter half of chapter 3 examines the Australians' after-action reports to better understand their tactical and operational methods. Finally, chapter 4 provides an overview of Australian and American interactions between the advisers and the Vietnamese, as well as their attitudes towards the end of the war and the withdrawal from Vietnam. The conclusion summarizes the significance of the thesis by reemphasizing the significance of US-Australian interactions in the twentieth century and the importance of continued studies on this topic between US and Australian historians.
Date: May 2020
Creator: Wos, Nathaniel
Partner: UNT Libraries

Ayurveda as Medicine

Description: Complimentary and alternate medicine, especially Ayurveda is gaining popularity in United States. However, there are various barriers that people face in adopting Ayurvedic practices into their lives and making cultural, familial and societal changes to better their health. This research explores these relationships and barriers behind why some people adopt and are able/unable to sustain Ayurvedic practices in the presence of traditional bio-medicine.
Date: May 2020
Creator: Das, Minakshi
Partner: UNT Libraries

BC Framework for CAV Edge Computing

Description: Edge computing and CAV (Connected Autonomous Vehicle) fields can work as a team. With the short latency and high responsiveness of edge computing, it is a better fit than cloud computing in the CAV field. Moreover, containerized applications are getting rid of the annoying procedures for setting the required environment. So that deployment of applications on new machines is much more user-friendly than before. Therefore, this paper proposes a framework developed for the CAV edge computing scenario. This framework consists of various programs written in different languages. The framework uses Docker technology to containerize these applications so that the deployment could be simple and easy. This framework consists of two parts. One is for the vehicle on-board unit, which exposes data to the closest edge device and receives the output generated by the edge device. Another is for the edge device, which is responsible for collecting and processing big load of data and broadcasting output to vehicles. So the vehicle does not need to perform the heavyweight tasks that could drain up the limited power.
Date: May 2020
Creator: Chen, Haidi
Partner: UNT Libraries

A 'Bohemian' Premiere? Smetana's "The Bartered Bride" and National Identity in 1909 New York

Description: When Czech composer Bedřich Smetana's opera The Bartered Bride received its American premiere at the Metropolitan Opera in February 1909, New York music critics published positive reviews which displayed a great fascination with the many "Bohemian" aspects of the production. However, certain comments or language used by some critics indicate that American opinions of the Czech people were less than positive. After Czechs began immigrating to America en masse in 1848, already-established American citizens developed skewed cultural perceptions of the Czech people, established negative stereotypes, and propagated their opinions in various forms of press throughout the nation. Despite a general dislike of the Czechs, reviewers revered The Bartered Bride and praised its many authentic "Bohemian" qualities. This research explores the idea of a paradoxical cultural phenomenon in which the prejudice against Czech people did not fully cross over into the musical sphere. Instead, appreciation for Czech music and musicians may have trumped any such negative opinions and authentic Czech productions such as The Bartered Bride may have been considered a novelty in the eyes of early twentieth-century New Yorkers.
Date: May 2020
Creator: Fehr, Laura
Partner: UNT Libraries

Bridging the Fantastical Gap: Dread and the Uncanny in the Score of "It Follows"

Description: "It Follows" (2014), written and directed by David Robert Mitchell, premiered at the Cannes Film Festival in 2014. It chronicles the story of Jay, a college student who contracts a curse through sexual intercourse. The curse manifests itself as a human whom only the infected persons can see, always following at a walking pace, and determined to kill if it catches up. This thesis demonstrates the score's crucial role in establishing affect, setting, and character in a film with sparse dialogue and a silent monster. Moreover, the score creates a sense of the uncanny by complicating the binary between music and sound effect and fulfills the need to create dread without resorting to the loud or sudden sounds traditionally heard in horror films. The score's composer, Richard Vreeland, achieves this effect by drawing on both classical film scoring techniques as well as more modern horror scoring styles. It is this interaction between styles that enhances the viewers' experience of dread and horror in the film. This thesis analyzes how Vreeland's score for "It Follows" exploits the poetics of the fantastical gap, of the uncanny, and of musical semiosis. I primarily focus on the "Heels" theme and use of drones in "It Follows," tracing how these musical features blur the distinction between what is score and what is sound effect. I also examine the use of melodic themes in a primarily non-melodic score. By analyzing these elements, I show how Richard Vreeland uses both classical and modern scoring techniques to answer his own question: "Why is this scary? What could push that emotion even further?"
Date: May 2020
Creator: Johnson, Kinley
Partner: UNT Libraries

The Buffering Effects of Religiosity on Adolescent Alcohol Abuse Coping following Victimization

Description: This research comprised a secondary study using the National Longitudinal Study of Adolescent Health restricted data set to examine the buffering effects of religiosity on adolescent alcohol coping following victimization within the context of Agnew's general stain theory. Its purpose was to determine if religiosity buffered the effects of alcohol abuse coping following victimization for native-born and foreign-born non-Hispanic adolescents, and was designed as a follow-up research study to similarly replicate a prior study limited to native-born and foreign-born Hispanic adolescents. This study's findings were consistent with prior research that higher religiosity was generally predictive of lower levels of alcohol abuse. However, in the presence of violent victimization, religiosity did not buffer later increased alcohol abuse coping for non-Hispanic adolescents. Native-born religiously oriented adolescents were as likely to abuse alcohol following violent victimization as their native-born non-religious peers. Foreign-born religiously oriented versus non-religiously-oriented adolescents did not have statistically significant different outcomes on later alcohol abuse following victimization. Foreign-born non-Hispanic adolescents as a group appeared generally insensitive to victimization strain as measured by alcohol abuse coping. An important outcome of this study was the collateral finding that being Catholic substantially increased the likelihood of later alcohol abuse for both native-born and foreign-born non-Hispanic adolescents; the increase in alcohol abuse for foreign-born adolescents was especially pronounced. The study's findings have particular relevance for adolescent counseling and others working with adolescents, and especially for those working within a religious context. Numerous areas for additional research are identified and discussed.
Date: May 2020
Creator: Bryant, Mark R
Partner: UNT Libraries

"A Century of Ash"

Description: Contained within is a sample, consisting of the first twelve chapters, which portray the final days of the fictional Polian War. The events are a springboard for the rest of the novel, and indeed the series.
Date: May 2020
Creator: Kusch, Zachary
Partner: UNT Libraries

Collected Stories

Description: A collection of short fiction stories that fixate on the role of the strange and the imagined.
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Date: May 2020
Creator: Flannery, Brendan Conor
Partner: UNT Libraries

Design of a Wearable Flexible Resonant Body Temperature Sensor with Inkjet-Printing

Description: A wearable body temperature sensor would allow for early detection of fever or infection, as well as frequent and accurate hassle-free recording. This thesis explores the design of a body-temperature-sensing device inkjet-printed on a flexible substrate. All structures were first modeled by first-principles, theoretical calculations, and then simulated in HFSS. A variety of planar square inductor geometries were studied before selecting an optimal design. The designs were fabricated using multiple techniques and compared to the simulation results. It was determined that inductance must be carefully measured and documented to ensure good functionality. The same is true for parallel-plate and interdigitated capacitors. While inductance remains relatively constant with temperature, the capacitance of the device with a temperature-sensitive dielectric layer will result in a shift in the resonant frequency as environmental or ambient temperature changes. This resonant frequency can be wirelessly detected, with no battery required for the sensing device, from which the temperature can be deduced. From this work, the optimized version of the design comprises of conductive silver in with a temperature-sensitive graphene oxide layer, intended for inkjet-printing on flexible polyimide substrates. Graphene oxide demonstrates a high dielectric permittivity with good sensing capabilities and high accuracy. This work pushes the state-of-the-art in applying these novel materials and techniques to enable flexible body temperature sensors for future biomedical applications.
Date: May 2020
Creator: Horn, Jacqueline Marie
Partner: UNT Libraries

Design of Ultra Wideband Low Noise Amplifier for Satellite Communications

Description: This thesis offers the design and improvement of a 2 GHz to 20 GHz low noise amplifier (LNA) utilizing pHEMT technology. The pHEMT technology allows the LNA to generate a boosted signal at a lower noise figure (NF) while consuming less power and achieving smooth overall gain. The design achieves an overall gain (S21) of ≥ 10 dB with an NF ≤ 2 dB while consuming ≤ 30 mA of power while using commercial off-the-shelf (COTS) components.
Date: May 2020
Creator: Webber, Scott
Partner: UNT Libraries

Determining Event Outcomes from Social Media

Description: An event is something that happens at a time and location. Events include major life events such as graduating college or getting married, and also simple day-to-day activities such as commuting to work or eating lunch. Most work on event extraction detects events and the entities involved in events. For example, cooking events will usually involve a cook, some utensils and appliances, and a final product. In this work, we target the task of determining whether events result in their expected outcomes. Specifically, we target cooking and baking events, and characterize event outcomes into two categories. First, we distinguish whether something edible resulted from the event. Second, if something edible resulted, we distinguish between perfect, partial and alternative outcomes. The main contributions of this thesis are a corpus of 4,000 tweets annotated with event outcome information and experimental results showing that the task can be automated. The corpus includes tweets that have only text as well as tweets that have text and an image.
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Date: May 2020
Creator: Murugan, Srikala
Partner: UNT Libraries

The Effect of Welfare Benefit Levels on Female Headship in the AFDC and TANF Eras

Description: The purpose of this study is to revisit the question of whether welfare benefit levels influence female headship, and whether the effect differs between the two main eras of welfare policy relevant to female headship, Aid to Families with Dependent Children (AFDC) and Temporary Assistance to Needy Families (TANF). This study adds to the existing literature by including more up to date data allowing for a comparison between the AFDC and TANF eras. Results show that the effect of welfare benefits on female headship rates changes from negative to positive after welfare reform occurred among blacks, while no change occured among whites.
Date: May 2020
Creator: Degreve, Thomas Evan
Partner: UNT Libraries

The Effects of Instructions on Schedule Sensitivity

Description: There are many situations in which human performances appear insensitive to changing contingencies of reinforcement when compared to nonhuman operant performances. Explanations of these discrepancies have appealed to rule-governance and have provided some evidence that instructions produce these differences by restricting response alternatives as well as functioning as discriminative stimuli for other contingencies. In order to further evaluate these potential functions, a canonical study on rule-governance was systematically replicated. Five undergraduate participants were tasked with earning blocks by pressing a button during LED-signaled, fixed-ratio 7 and differential-reinforcement-of-low-rate 5-s schedules of reinforcement. Phase 1 of the experiment switched between these two schedules, with the schedule alternating every 1 minute. Phase 2 added instructions to "Go Fast" and "Go Slow" to the LEDs and programmed the lit LED to switch 30 seconds into each 1-minute session. Phase 3 removed the instructions from the LEDs and returned to the procedures of phase 1, with only one LED lit during each 1-minute session. Results showed that instructions influence the response rates as well as stimulus control over those rates. Results also showed that all participants ignored instructions conflicting with the reinforceable rate by the end of Phase 2. These findings indicate that instances of insensitivity may result from instructions restricting response alternatives and their stimulus control, as opposed to instructions signaling a second contingency. These findings are discussed in terms of the nature of instructional stimulus control, its relation to the operant unit of analysis, and alternative interpretations of other instances of insensitivity.
Date: May 2020
Creator: Butcher, Grayson M
Partner: UNT Libraries

The Effects of Probiotics on Growth, and Metabolism in Juvenile Oreochromis mossambicus (Mozambique Tilapia)

Description: Improving growth, lowering mortality rates, and having a faster turnaround to harvest is essential for the future of commercial aquaculture. The primary goal of this study was to determine if introducing a single strain probiotic Lactobacillus rhamnosus IMC 501 into the feed regimen of a commercially important aquaculture freshwater fish, Mozambique tilapia (Oreochromis mossambicus), would decrease mortality; change metabolic rates; and increase tissue wet mass (MW), standard length, growth rate and feed conversion rate (FCRs). IMC501 was added to the fishmeal in four increasing concentrations and compared to a control without probiotics. Results from two-way ANOVAs showed that both treatment levels and elapsed time had a significant effect on both mean standard length and wet mass; in the latter case, time points and treatments interacted with one another, showing that tilapia grew best with a moderate level of probiotics present. The growth benefits of probiotics continued for months after the initial treatments. Oxygen consumption (metabolic rate) was measured using closed respirometry and resulted in recording the first values for juvenile tilapia treated with probiotics. For oxygen consumption, there were significant treatment and time effects with significant interactions, indicating that metabolism increased with probiotics once the dosage exceeded three times the industry level. These results are consistent with the observed increases in mass, length and growth rates. These results demonstrate the importance of conducting dose-response experiments in order to determine the most effective concentration of probiotics in juvenile freshwater fish. Importantly, probiotics at the right concentration increase metabolic rates and can positively influence tilapia growth, which is of interest for the optimization of Mozambique tilapia production in aquaculture.
Date: May 2020
Creator: Anderson, Michael Earl
Partner: UNT Libraries

Encouraging Tolerance of and Cooperation with Dental/Medical Routines

Description: The participant is a 61-year-old woman, diagnosed with a generalized anxiety disorder and profound intellectual disability who was referred to a behavior-disorders clinic, to increase cooperation with routine dental procedures. I used a behavioral treatment package consisting of stimulus fading, differential reinforcement, and extinction to establish tolerance of, and cooperation with, routine dental procedures. Results showed that cooperative responding varied throughout the progression of teaching the prerequisite steps (sitting in a chair, sitting in a variety of chairs, then working on sitting in the dental chair). However, by the end of the study, the participant engaged in the behavior of open mouth for 30 s and tolerated/cooperated with the experimenter using a plastic visual inspection tool for 30 s. Further research should evaluate the effectiveness of a similar treatment package to develop a more streamlined and systematic framework to improve compliance and tolerance.
Date: May 2020
Creator: Rawlings, Jordan
Partner: UNT Libraries

Encrypted Collaborative Editing Software

Description: Cloud-based collaborative editors enable real-time document processing via remote connections. Their common application is to allow Internet users to collaboratively work on their documents stored in the cloud, even if these users are physically a world apart. However, this convenience comes at a cost in terms of user privacy. Hence, the growth of popularity of cloud computing application stipulates the growth in importance of cloud security. A major concern with the cloud is who has access to user data. In order to address this issue, various third-party services offer encryption mechanisms for protection of the user data in the case of insider attacks or data leakage. However, these services often only encrypt data-at-rest, leaving the data which is being processed potentially vulnerable. The purpose of this study is to propose a prototype software system that encrypts collaboratively edited data in real-time, preserving the user experience similar to that of, e.g., Google Docs.
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Date: May 2020
Creator: Tran, Augustin
Partner: UNT Libraries

Equines Do Not Live for Grass Alone: Teaching Equines with Social Interaction

Description: Most horse training methods heavily rely on negative reinforcement and punishment. However, there is a movement in the horse community to utilize positive reinforcement to meet training goals. Although food has been used effective as a reinforcer with horses, social interaction has also been demonstrated to function as a positive reinforcer for animals. Utilizing social interaction as a reinforcer may lead to several benefits for both the trainer and animal. Some of the benefits can be improved relationships between animals and their caretakers and improved animal welfare. The purpose of this study was to apply Owens and Owens et al. previous research protocols to three equines to assess if social interaction, in the form of petting and gentle scratching, would function as a reinforcer. Using a changing criterion design, this study demonstrated that petting and gentle scratching could function as a reinforcer to teach three equines to stay and come in their natural environment.
Date: May 2020
Creator: Nishimuta, Maasa
Partner: UNT Libraries

An Evaluation of a Waiting Period and DRL on Reducing Mands serving as Precursors to Self-Injurious Behavior

Description: Extensive research has been conducted demonstrating the utility of differential reinforcement as an effective intervention for self-injurious behavior. However, the majority of this literature requires teaching an alternative response to access reinforcement. Further evaluation of treating self-injurious behavior in individuals that already possess the repertories to contact reinforcement appropriately. Prior to initiating the study, functional assessments were completed for both participant that demonstrated high-rate bursts of mands served as a reliable precursor to self-injurious behavior. In the present study, we evaluated a waiting period and differential reinforcement of low rate behavior on reducing mands while keeping self-injurious behavior at or near zero levels. Results indicated that shorter waiting periods and DRL values were effective at reducing mands and maintaining near zero levels of self-injurious behavior.
Date: May 2020
Creator: Baak, Sara Ann
Partner: UNT Libraries

An Evaluation of Effectiveness and Efficiency of Matrix Training Permutations

Description: Recombinative generalization is a generative outcome that involves responding to novel stimulus combinations, and it can be facilitated through an instructional approach called matrix training. A learner's history with constituent stimuli and the arrangement of combination stimuli within the instructional matrix may affect the likelihood of recombinative generalization. To investigate this further, the current project assessed recombinative generalization with novel combinations of abstract stimuli by programming specific training histories for undergraduate student participants. The matrix training conditions were: (a) trained constituents with overlap training, (b) untrained constituents with overlap training, (c) trained constituents with nonoverlap training, and (d) untrained constituents with nonoverlap training. We evaluated whether and the extent to which recombinative generalization occurred in each matrix training condition in comparison to a condition that included training the constituents and providing a word-order rule. Finally, we compared the training trials in experimental conditions to directly training all constituents and combinations. The results suggested both overlap conditions and the trained constituents with nonoverlap condition produced recombinative generalization, and the trained constituents with nonoverlap condition was the most efficient. These results could inform the training order and stimulus arrangements practitioners employ to program for recombinative generalization.
Date: May 2020
Creator: Durham, Rebecca
Partner: UNT Libraries

Framing a Sacred Fight: Framing Analysis and Collective Identity of the #noDAPL Movement

Description: The #noDAPL movement was an Indigenous-led environmental social movement occurring between 2015 and 2017, in which the Standing Rock Sioux and other American Indian tribes comprising the Oceti Sakowin garnered support to oppose the 1,172-mile Dakota Access Pipeline. Pipeline opponents agreed that the pipeline's construction posed a threat to the health and safety of tribal members and other residents of the area and that the pipeline's path crossed previously-designated tribal treaty boundaries, compromising tribal sovereignty. In this body of work, I utilize Facebook data from the Sacred Stone Camp Facebook page to locate and identify collective action frames and core framing tasks, adhering to social movement framing theory. Further, I provide insight into the movement's most used collective action frames and how their use enabled to movement to maintain occupation at protest camps along the Missouri River, garner resources from participants and gain international social support. I also draw on concepts of pan-Indianism and supratribalism to discuss indigenous collective identity, as well as concepts like relational values and Indigenous traditional knowledge to better assess the nuances of Indigenous environmental activism and how this movement evoked discussions of modern day settler colonialism.
Date: May 2020
Creator: Gaston, Emilia
Partner: UNT Libraries

A Functional Analysis of Sharing in Preschoolers with Autism Spectrum Disorder

Description: Individuals with autism spectrum disorder (ASD) demonstrate deficits in social behavior which may hinder them from engaging in social interactions. Results of descriptive analyses suggest that children who engage in prosocial behaviors, such as sharing, likely receive social positive reinforcement from peers in the form of attention. However, functional relations between prosocial behaviors, such as sharing, and their maintaining consequences have yet to be identified. Thus, the purpose of this study was to extend previous research by evaluating the naturally maintaining contingencies associated with sharing in three preschool-aged children with ASD. Functional analyses have traditionally been used to identify the function of maladaptive behavior; however, we extended the same methodological approach to identify functional relations of sharing. Results suggest that sharing was maintained by attention for two participants and was multiply-maintained by both attention and access to tangibles for one participant. These findings indicate that the functional analysis methodology is appropriate to understanding prosocial behaviors. In addition, results advance our understanding of prosocial behavior and may better inform methods of how to functionally teach sharing to individuals with ASD.
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Date: May 2020
Creator: Clubb, Courtney
Partner: UNT Libraries