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Lone Star Insanity: Efforts to Treat the Mentally Ill in Texas, 1861-1929 (open access)

Lone Star Insanity: Efforts to Treat the Mentally Ill in Texas, 1861-1929

During the mid-nineteenth century, the citizens of Texas were forced to keep their mentally disturbed family members at home which caused stress on the caregivers and the further debilitation of the afflicted. To remedy this situation, mental health experts and Texas politicians began to create a system of healing known as state asylums. The purpose of this study is to determine how Texas mental health care came into being, the research and theories behind the prevention and treatment programs that asylum physicians employed to overcome mental illness, in addition to the victories and shortcomings of the system. Through this work, it will be shown that during the 1850s until the 1920s institutions faced difficulty in achieving success from many adverse conditions including, but not limited to, overcrowding, large geographical conditions, poor health practices, faulty construction, insufficient funding, ineffective prevention and treatment methods, disorganization, cases of patient abuse, incompetent employees, prejudice, and legal improprieties. As a result, by 1930, these asylums were merely places to detain the mentally ill in order to rid them from society. This thesis will also confirm that while both Texas politicians and mental health experts desired to address and overcome mental illness in Texas, they were …
Date: December 2015
Creator: Boyd, Dalton T.
System: The UNT Digital Library
“Removing the Danger in a Business Way”: the History and Memory of Quakertown, Denton, Texas (open access)

“Removing the Danger in a Business Way”: the History and Memory of Quakertown, Denton, Texas

Overall this thesis analyzes a strain of the white supremacist vision in Denton, Texas via a case study of a former middle-class black neighborhood. This former community, Quakertown, was removed by white city officials and leaders in the early 1920s and was replaced with a public city park. Nearly a century later, the story of Quakertown is celebrated in Denton and is remembered through many sites of memory such as a museum, various texts, and several city, county, and state historical markers. Both the history and memory of Quakertown reveal levels of dominating white supremacy in Denton, ranging from harmless to violent. Chapters 2, 3, and 4 focus on the history of Quakertown. I begin chapter 2 by examining as many details as possible that reveal the middle-class nature of the black community and its residents. Several of these details show that Quakertown residents not only possessed plentiful material items, but they also had high levels of societal involvement both within their community as well as around Denton. Despite being a self-sufficient and successful community, Quakertown residents were not immune to the culture of racial fear that existed in Denton, which was common to countless towns and communities across the …
Date: August 2015
Creator: Stallings, Chelsea
System: The UNT Digital Library
Let the Punishment Fit the Crime: an Overview of the Historical Approach to Probation in the State of Texas (open access)

Let the Punishment Fit the Crime: an Overview of the Historical Approach to Probation in the State of Texas

Adult probation evolved in the United States as a result of the suspended sentence concept. As a result of a lack of follow through when an individual obtained a suspended sentence, there was no “checks and balances” to monitor whether an individual completed the guidelines set forth. As time progressed, it became apparent a more cohesive and monitored system was needed. Thus, an energetic and motivated individual, John Augustus, started the concept of probation by taking it upon himself to assist in the rehabilitative process of individuals charged with criminal behavior. Subsequent to his death, the concept of probation was embraced by his advocates who lobbied legislatively in order to enact probation laws that would oversee the success of probationers. It wasn’t until the 1950’s that the counties in the state of Texas took it upon themselves to enact their own system of monitoring of probationers. Over time the states have guided their probation concepts from evidence based research. Juvenile probation in the United States didn’t gain a solid foundation until the end of the 19th century with the development of the first juvenile court in Illinois. It took this country time to understand that juveniles were different than adults …
Date: May 2015
Creator: Reichstein, Sheldon Philip
System: The UNT Digital Library
Creating Community in Isolation: the History of Corpus Christi’s Molina Addition, 1954-1970 (open access)

Creating Community in Isolation: the History of Corpus Christi’s Molina Addition, 1954-1970

“Creating Community in Isolation: The History of Corpus Christi’s Molina Addition, 1954-1970” examines the history of the Molina Addition in Corpus Christi, Nueces County, Texas, and its serving district, the West Oso Independent School District, from 1954 to 1970. Specifically, this essay begins with an analysis of the elite-driven campaign to annex the blighted Molina Addition in September and October 1954. The city intended to raze the neighborhood and develop middle-class homes in place of the newly annexed neighborhood. Following the annexation of the Molina Addition, African American and ethnic Mexican residents initiated protracted struggles to desegregate and integrate schools that served their area, the West Oso Independent School District, as detailed in the chapter, “The West Oso School Board Revolution.” The chapter examines the electoral “revolution” in which Anglo rural elites were unseated from their positions on the school board and replaced by African American and ethnic Mexican Molina Addition residents. The third chapter, “Building Mo-Town, Texas,” focuses on residents’ struggle to install indoor plumbing, eliminate pit privies, construct paved roads, and introduce War on Poverty grants to rehabilitate the neighborhood. This chapter also offers a glimpse into the social life of Molina youth during the 1960s.
Date: December 2015
Creator: Gurrola, Moisés A.
System: The UNT Digital Library
Office of the Lieutenant Governor of Texas: a History, Pre-statehood to 1949 (open access)

Office of the Lieutenant Governor of Texas: a History, Pre-statehood to 1949

The office of a state lieutenant governor often fails to evoke images of power, influence, or prestige. However, in Texas the office is regarded by many as the most powerful political office in the state. The Texas lieutenant governor derives his power from several sources, including the Texas Constitution, Senate rules, statutes, and the personality of the officeholder. This work explores the role of the Texas lieutenant governor in the pre-modern period with an examination of the office’s legalistic and pre-statehood roots. Aspects explored include the backgrounds of the men who became lieutenant governor, the power the officeholders exerted during their time in office, and whether or not the office became a platform for future political success. The men who served as lieutenant governor during the first century of statehood for Texas did not have the power enjoyed by their more recent contemporaries. However, some of them laid a foundation for the future by exploiting political opportunities and amending legislative practices. As Texas grew into a modern and urban state, the power and influence of the office of lieutenant governor also grew.
Date: August 2015
Creator: Taylor, Nicholas Gerard
System: The UNT Digital Library
Assessment of Hot and Cool Executive Functioning Following Trauma Using the Traditional Stroop Task, Emotional Stroop Task, and a Novel Implicit Association Test (open access)

Assessment of Hot and Cool Executive Functioning Following Trauma Using the Traditional Stroop Task, Emotional Stroop Task, and a Novel Implicit Association Test

Individuals who have experienced a traumatic event and develop Post-Traumatic Stress Disorder (PTSD) frequently show deficits in both primarily “cool” and “hot” cognitive executive functions (e.g., traditional & emotional Stroop tasks, respectively) that can be impacted by high affective salience. Given the dimensional nature of psychopathology, questions remain about individuals within the general population who have experienced trauma but do not meet full criteria for PTSD and yet may manifest problems in these areas, especially areas of hot and cool executive functioning (EF). Thus, the current project was designed to assess hot and cool EF in a relatively large sample of individuals from the general population who have experienced trauma and currently demonstrate sub-clinical levels of post-traumatic symptoms. The Stroop task, Emotional Stroop task, and a novel modified Implicit Association Test were utilized to assess EF across a spectrum of individuals with varying traumatic histories and level of post-traumatic symptoms. Results suggest that a greater frequency of trauma experiences was moderately associated with worse performance on both hot and cool executive functioning measures. Specifically, females within the sample evidenced a close relationship between traumatic experiences, post-trauma symptoms, and executive functioning. Clinical and theoretical implications are discussed.
Date: December 2015
Creator: Sullivan, Erin
System: The UNT Digital Library
The Virtual Classroom As a Tool for the Assessment of Automatic and Controlled Processing in Autism Spectrum Disorders (open access)

The Virtual Classroom As a Tool for the Assessment of Automatic and Controlled Processing in Autism Spectrum Disorders

Assessment of executive functioning in neurodevelopmental disorders (e.g., autism) is a crucial aspect of neuropsychological evaluations. The executive functions are accomplished by the supervisory attentional system (SAS) and include such processes as inhibition, switching, and planning. Autism spectrum disorder (ASD) tends to present similarly to other neurodevelopmental disorders (e.g., ADHD). For example, ASD and ADHD may share similar etiological underpinnings in the frontostriatal system of the frontal lobe. Research on executive functioning in ASD has been mixed, thus the precise nature of executive functioning deficits in ASD remains equivocal. In recent years, simulation technologies have emerged as an avenue to assess neurocognitive functioning in individuals with neurodevelopmental disorders impacting frontostriatal function. Simulation technology enables neuropsychologists to assess neurocognitive functioning within a testing environment that replicates environments in which the subject is likely to be in everyday life, as well as present controlled, real-world distractions, which may be better able to tap “hot” executive functions. A Virtual Classroom Continuous Performance Test (CPT) has been used successfully to assess attention in individuals with neurodevelopmental disorders impacting frontostriatal function. The current study aimed to investigate executive functioning in individuals with high functioning ASD using a new construct driven Stroop assessment embedded into the …
Date: August 2015
Creator: Carlew, Anne R.
System: The UNT Digital Library
Neurotoxicity of the Industrial Solvent 4-Methylcyclohexanemethanol: Involvement of the GABA Receptor (open access)

Neurotoxicity of the Industrial Solvent 4-Methylcyclohexanemethanol: Involvement of the GABA Receptor

A recent chemical spill of 4-Methylcyclohexanemethanol (4-MCHM) in West Virginia left 300,000 people without water. Officials claimed that this compound is not lethally toxic, but potentially harmful if swallowed or inhaled, and can cause eye and skin irritation. Sittig's Handbook of Toxic and Hazardous Chemical Carcinogens reports high exposures from skin contact or inhalation may cause damage to the heart, liver, kidneys, and lungs, and may result in death. However, no quantitative data seem to exist and no references can be found on neurotoxicity. We have investigated the neurotoxicity of 4-MCHM using mammalian nerve cell networks grown on microelectrode arrays. Network spontaneous activity from multiple units (range 48 – 120 per network) were used as the primary readout. Individual units were followed based on spike waveforms digitized at 40 kHz (Plexon MNAP system). Dose response curves show the effective inhibitory concentration at 50 percent decrease (EC50) to average 27.4 microM SD±6.17. However, in the presence of 40 microM bicuculline, a competitive GABAA antagonist, the EC50 shifts to 70.63uM SD ±4.3; implying that early, low concentration exposures to 4-MCHM involve GABA activation. Initial activity loss occurs without active unit loss (defined as 10 or more template threshold crossing per min), indicating …
Date: May 2015
Creator: Gibson, Jason (Jason Robert)
System: The UNT Digital Library
Taking It to the Streets: the History of Gay Pride Parades in Dallas, Texas: 1972-1986 (open access)

Taking It to the Streets: the History of Gay Pride Parades in Dallas, Texas: 1972-1986

This thesis describes the organization of two waves of pride parades in the city of Dallas, Texas. Using more than 40 sources, this work details how LGBT organizers have used pride parades to create a more established place for the LGBT community in greater Dallas culture. This works adds to the study of LGBT history by focusing on an understudied region, the South; as well as focusing on an important symbolic event in LGBT communities, pride parades.
Date: August 2015
Creator: Edelbrock, Kyle
System: The UNT Digital Library
Why the Fuse Blew: the Reasons for Colonial America’s Transformation From Proto-nationalists to Revolutionary Patriots: 1772-1775 (open access)

Why the Fuse Blew: the Reasons for Colonial America’s Transformation From Proto-nationalists to Revolutionary Patriots: 1772-1775

The most well-known events and occurrences that caused the American Revolution are well-documented. No scholar debates the importance of matters such as the colonists’ frustration with taxation without representation, the Boston Massacre, the Boston Tea Party, and the Coercive Acts. However, very few scholars have paid attention to how the 1772 English court case that freed James Somerset from slavery impacted American Independence. This case occurred during a two-year stall in the conflict between the English government and her colonies that began in 1763. Between 1763 and 1770, there was ongoing conflict between the two parties, but the conflict temporarily subsided in 1770. Two years later, in 1772, the Somerset decision reignited tension and frustration between the mother country and her colonies. This paper does not claim that the Somerset decision was the cause of colonial separation from England. Instead it argues that the Somerset decision played a significant yet rarely discussed role in the colonists’ willingness to begin meeting with one another to discuss their common problem of shared grievance with British governance. It prompted the colonists to begin relating to one another and to the British in a way that they never had previously. This case’s impact on …
Date: August 2015
Creator: Davis, Camille Marie
System: The UNT Digital Library
Establishing the American Way of Death: World War I and the Foundation of the United States’ Policy Toward the Repatriation and Burial of Its Battlefield Dead (open access)

Establishing the American Way of Death: World War I and the Foundation of the United States’ Policy Toward the Repatriation and Burial of Its Battlefield Dead

This thesis examines the policies and procedures created during and after the First World War that provided the foundation for how the United States commemorated its war dead for the next century. Many of the techniques used in modern times date back to the Great War. However, one hundred years earlier, America possessed very few methods or even ideas about how to locate, identify, repatriate, and honor its military personnel that died during foreign conflicts. These ideas were not conceived in the halls of government buildings. On the contrary, concerned citizens originated many of the concepts later codified by the American government. This paper draws extensively upon archival documents, newspapers, and published primary sources to trace the history of America’s burial and repatriation policies, the Army Graves Registration Services, and how American dead came to permanently rest in military cemeteries on the continent of Europe. The unprecedented dilemma of over 80,000 American soldiers buried in France and surrounding countries at the conclusion of the First World War in 1918 propelled the United States to solve many social, political, and military problems that arose over the final disposition of those remains. The solutions to those problems became the foundation for how …
Date: August 2015
Creator: Hatzinger, Kyle J.
System: The UNT Digital Library
Reconstruction in Collin County, Texas, 1865-1876 (open access)

Reconstruction in Collin County, Texas, 1865-1876

This is a work of local history examining the course of Reconstruction in Collin County, Texas. National and state level surveys of Reconstruction often overlook the experiences of communities in favor of simpler, broader narratives. The work proceeds chronologically, beginning with the close of the Civil War, and tells the story of Collin County as national Reconstruction progressed and relies on works of professional and non-academic historians, oral histories, census data, and newspapers to present a coherent picture of local life, work, and politics. The results exemplify the value of local history, as local conditions influenced the course of events in Collin County as much as those in Austin and Washington D.C. The story of Reconstruction in Collin County is one of anomalous political views resulting from geographical exclusion from the cotton culture of Texas followed by a steady convergence. As Reconstruction progressed, Collin County began to show solidarity with more solidly conservative Texas Counties. The arrival of railroads allowed farmers to move from subsistence agriculture to cash crop production. This further altered local attitudes toward government, labor, voting rights, and education for Freedmen. By the end of Reconstruction, Collin County had all but abandoned their contrarian social and political …
Date: August 2015
Creator: Thompson, Jesse R.
System: The UNT Digital Library
The Captain of the People in Renaissance Florence (open access)

The Captain of the People in Renaissance Florence

The Renaissance Florentine Captain of the People began as a court, which defended the common people or popolo from the magnates and tried crimes such as assault, murder and fraud. This study reveals how factionalism, economic stress and the rise of citizen magistrate courts eroded the jurisdiction and ended the Court of the Captain. The creation of the Captain in 1250 occurred during the external fight for dominance between the Holy Roman Emperor and the Pope and the struggle between the Guelfs and Ghibellines within the city of Florence. The rise of the Ciompi in 1379, worried the Florentine aristocracy who believed the Ciompi was a threat to their power and they created the Otto di Guardia, a citizen magistrate court. This court began as a way to manage gaps in jurisdiction not covered by the Captain and his fellow rectors. However, by 1433 the Otto eroded the power of the Captain and his fellow rectors. Historians have argued that the Roman law jurists in this period became the tool for the aristocracy but in fact, the citizen magistrate courts acted as a source of power for the aristocracy. In the 1430s, the Albizzi and Medici fought for power. The …
Date: August 2015
Creator: Hamilton, Desirae
System: The UNT Digital Library
Shame Due to Heterosexism, Self-esteem and Perceived Stress: Correlates of Psychological Quality of Life in a Lesbian, Gay and Bisexual Sample (open access)

Shame Due to Heterosexism, Self-esteem and Perceived Stress: Correlates of Psychological Quality of Life in a Lesbian, Gay and Bisexual Sample

Sexual minorities experience higher levels of stress than heterosexuals, which in turn affects coping and psychological quality of life (PQOL). Although many sexual minorities remain mentally healthy, a higher prevalence of mental disorders among members of the lesbian, gay and bisexual (LGB) communities exists; thus, LGB PQOL becomes an important area to examine. Several key factors are related to PQOL: shame due to heterosexism, self-esteem and perceived stress. Using minority stress model, I hypothesized that shame due to heterosexism and perceived stress are negatively correlated with PQOL, while self-esteem is positively correlated with PQOL. I hypothesized that collectively shame due to heterosexism, self-esteem and perceived stress account for a significant proportion of the variance in PQOL, that self-esteem moderates the relationship between perceived stress and PQOL and that age moderates the relationship between shame due to heterosexism and PQOL. I calculated Pearson product-moment correlation coefficient and found shame due to heterosexism was negatively correlated with PQOL (r(146) = -.21, p = .009), perceived stress was negatively correlated with PQOL (r (146) = -.69, p < .001) and self-esteem was positively correlated with PQOL (r(146) = .72, p < .001). I conducted a regression analysis and found our model accounted for …
Date: December 2015
Creator: Bonds, Stacy E.
System: The UNT Digital Library
Prison Notes: an Introductory Study of Inmate Marginalia (open access)

Prison Notes: an Introductory Study of Inmate Marginalia

This thesis introduces the study of inmate marginalia as a method for understanding inmates’ uses of texts in prison libraries and for understanding the motivations for these uses. Marginalia are the notes, drawings, underlining, and other markings left by readers in the texts with which they interact. I use the examples of the Talmudic projects to set a precedent for the integration of marginal discourses into the central discourse of society. Next, I discuss the arguments surrounding the use of texts in prison libraries, including an outline for an ideal study of inmate marginalia. Finally, I discuss the findings of my on-site research at four prison libraries in Washington State. After scanning evidence of marginalia from forty-eight texts, a relatively small sample, I divided the marginalia by gender of facility, genre of text, address of the marginalia, and type of marginalia and found statistically significant correlations (p < 0.05) between gender and genre, gender and address, gender and type, and genre and type. However, while these correlations are statistically weak and require further investigation, the statistically significant correlations indicate the potential for integrating inmate marginalia studies into the scholarly discussions regarding inmates’ interactions with texts in prison.
Date: December 2015
Creator: Hunter, Cody
System: The UNT Digital Library
Marital Status and Racial/Ethnic Differences in Health Outcomes (open access)

Marital Status and Racial/Ethnic Differences in Health Outcomes

Substantial evidence demonstrates that marriage is associated with better health outcomes and lower mortality risk. Some evidence suggests that there are gender and race/ethnicity differences between the marriage-health benefits association. However, previous studies on marriage and health have mainly focused on non-Hispanic White-Black differences. Limited information is available regarding the roles of Hispanics. The present study examined marital status, gender, and the differences between non-Hispanic Whites, non-Hispanic Blacks, and Hispanics, in health outcomes. A retrospective cohort analysis of 24,119 Hispanic, NH White, and NH Black adults admitted to a large hospital was conducted. A total of 16,661 patients identified as either married or single was included in the final analyses. Consistent with the broader literature, marriage was associated with beneficial hospital utilization outcomes. With respect to differences in these benefits, results suggest that married patients, Hispanic patients, and women, were less likely to experience in-hospital mortality. Similar effects were observed in aggregated length of stay with married Hispanic women hospitalized nearly 2 days less than their single counterparts (6.83 days and 8.66 days, respectively). These findings support existing literature that marriage is associated with health benefits, add to the emerging research of a Hispanic survival advantage, and broaden the understanding …
Date: May 2015
Creator: Villarreal, Cesar
System: The UNT Digital Library
Photoinduced Toxicity in Early Lifestage Fiddler Crab (Uca longisignalis) Following Exposure to Deepwater Horizon Spill Oil (open access)

Photoinduced Toxicity in Early Lifestage Fiddler Crab (Uca longisignalis) Following Exposure to Deepwater Horizon Spill Oil

The 2010 Deepwater Horizon (DWH) oil spill resulted in a large release of polycyclic aromatic hydrocarbons (PAH) into the Gulf of Mexico. PAH can interact with ultraviolet radiation (UV) resulting in increased toxicity, particularly to early lifestage organisms. The goal of this research was to determine the sensitivity of fiddler crab larvae (Uca longisignalis) to photo-induced toxicity following exposure to Deepwater Horizon spill oil in support of the DWH Natural Resource Damage Assessment. Five replicate dishes each containing 20 larvae, were exposed to one of three UV treatments (10%, 50%, and 100% ambient natural sunlight) and one of five dilutions of water accommodated fractions of two naturally weathered source oils. A dose dependent effect of PAH and UV on larval mortality was observed. Mortality was markedly higher in PAH treatments that included co-exposure to more intense UV light. PAH treatments under low intensity sunlight had relatively high survival. These data demonstrate the importance of considering combined effects of non-chemical (i.e. UV exposure) and chemical stressors and the potential for photo-induced effects after exposure to PAH following the Deepwater Horizon spill.
Date: December 2015
Creator: Taylor, Leigh M.
System: The UNT Digital Library
Racial/Ethnic Differences in Social Support (open access)

Racial/Ethnic Differences in Social Support

Despite a substantially greater risk factor profile, Hispanics in the United States (US) consistently demonstrate better health outcomes compared to their non-Hispanic White counterparts, an epidemiologic phenomenon termed the Hispanic Mortality Paradox. Emerging hypotheses suggest cultural values regarding relational interconnectedness and social support may help to explain these surprising health outcomes. The present study sought to inform these hypotheses via two aims: the first was to examine racial/ethnic differences in perceived social support, and the second was to examine the relationship between acculturation and perceived social support among Hispanic college students. Non-Hispanic White, non-Hispanic Black, and Hispanic college students (N = 330) completed an online survey for course credit. Contrary to expectations, no racial/ethnic differences in perceived social support were observed, nor was an association between acculturation and perceived social support evident among the sampled Hispanic students. The limited sample size, homogeneity in social support levels across groups, and the restricted range of age and acculturation may have obscured relationships that may exist outside the college environment. Future work should consider a more heterogeneous sampling strategy to better assess these associations.
Date: May 2015
Creator: Goans, Christian R. R.
System: The UNT Digital Library
Cytotoxicity and Functional Toxicity of Mefloquine and the Search for Protective Compounds (open access)

Cytotoxicity and Functional Toxicity of Mefloquine and the Search for Protective Compounds

Mefloquine hydrochloride is an antimalarial agent that has been used for the past 40 years. Numerous reports of neurological side effects have recently led the FDA to issue a strong warning regarding long-term neurological effects. This warning lead to the U.S. Army’s Special Forces and other components to discontinue its use in July of 2013. Despite reported adverse side effects, mefloquine remains in circulation and is recommended to travelers going to specific Asian countries. Mefloquine has been used as a treatment for those already infected with the malaria parasite (blood concentrations ranging from 2.1 to 23 µM), and as prophylaxis (blood concentrations averaging 3.8 µM) (Dow 2003). The purpose of this study was to quantify Mefloquine’s toxicity using spontaneously active nerve cell networks growing on microelectrode arrays in vitro and to identify compounds that alleviate or reduce toxic effects. The current literature on mefloquine toxicity is lacking electrophysiological data. These data will contribute to research on the mechanism of adverse side effects associated with mefloquine use. Sequential titration experiments were performed by adding increasing concentrations of mefloquine solution to cultured neurons. Network responses were quantified and reversibility was examined. In each network, activity decreases were normalized as a percent of …
Date: May 2015
Creator: Holmes, Katelyn
System: The UNT Digital Library
Archaeological Site Vulnerability Modeling for Cultural Resources Management Based on Historic Aerial Photogrammetry and LiDAR (open access)

Archaeological Site Vulnerability Modeling for Cultural Resources Management Based on Historic Aerial Photogrammetry and LiDAR

GIS has been utilized in cultural resources management for decades, yet its application has been largely isolated to predicting the occurrence of archaeological sites. Federal and State agencies are required to protect archaeological sites that are discovered on their lands, but their resources and personnel are very limited. A new methodology is evaluated that uses modern light detection and ranging (LiDAR) and historic aerial photogrammetry to create digital terrain models (DTMs) capable of identifying sites that are most at risk of damage from changes in terrain. Results revealed that photogrammetric modeling of historic aerial imagery, with limitations, can be a useful decision making tool for cultural resources managers to prioritize conservation and monitoring efforts. An attempt to identify key environmental factors that would be indicative of future topographic changes did not reveal conclusive results. However, the methodology proposed has the potential to add an affordable temporal dimension to future digital terrain modeling and land management. Furthermore, the methods have global applicability because they can be utilized in any region with an arid environment.
Date: August 2015
Creator: Helton, Erin King
System: The UNT Digital Library
An Arduino Based Control System for a Brackish Water Desalination Plant (open access)

An Arduino Based Control System for a Brackish Water Desalination Plant

Water scarcity for agriculture is one of the most important challenges to improve food security worldwide. In this thesis we study the potential to develop a low-cost controller for a small scale brackish desalination plant that consists of proven water treatment technologies, reverse osmosis, cation exchange, and nanofiltration to treat groundwater into two final products: drinking water and irrigation water. The plant is powered by a combination of wind and solar power systems. The low-cost controller uses Arduino Mega, and Arduino DUE, which consist of ATmega2560 and Atmel SAM3X8E ARM Cortex-M3 CPU microcontrollers. These are widely used systems characterized for good performance and low cost. However, Arduino also requires drivers and interfaces to allow the control and monitoring of sensors and actuators. The thesis explains the process, as well as the hardware and software implemented.
Date: August 2015
Creator: Caraballo, Ginna
System: The UNT Digital Library
No Quarter: the Story of the New Orleans Greys (open access)

No Quarter: the Story of the New Orleans Greys

The purpose of this thesis document is to explain the process of making the documentary film, No Quarter: The Story of the New Orleans Greys. The document is organized by having the prospectus and the film proposal at the beginning, with the body describing how the film was made based on the prospectus. The purpose of the film is to tell the history of a unit of volunteers in the Texas Revolution, the New Orleans Greys. The document describes the methods used to make the film and how it will be distributed to the intended audience. As the thesis explains, the film changed slightly from the prospectus, however the resulting film was successful in telling the history of the little-known New Orleans Greys.
Date: December 2015
Creator: Barnes, Travis S.
System: The UNT Digital Library
To Weigh or Not to Weigh? Relation to Disordered Eating Attitudes and Behaviors Amongst Female Collegiate Athletes (open access)

To Weigh or Not to Weigh? Relation to Disordered Eating Attitudes and Behaviors Amongst Female Collegiate Athletes

Collegiate and elite female athletes have been identified as a subpopulation at heightened risk for disordered eating and pathogenic weight management practices. It was hypothesized that this increases risk may be related to sport specific pressures (such as team conducted weigh-ins), or the use and frequency of self-weighing. It appears that mandatory, team conducted weigh-ins are not salient to female athletes in regards to experiencing internalization, body image concerns, dietary restraint, negative affect, and bulimic symptomatology. Results, however, indicate that frequency of engagement in self-weighing may be influential in the engagement of disordered eating symptoms. Specifically, athletes who weighed themselves three or more times per week reported significantly more internalization of general societal ideals and athletic body ideals. For body image concerns, athletes who weighed three or more times per week reported being more concerned with their body size/shape than all others. With respect to dietary behaviors, athletes who weighed themselves three or more times per week reported engaging in significantly more caloric restriction than did those who weighed less frequently. For negative affect, the athletes who weighed themselves three or more times per week reported significantly higher levels of both anger and guilt. Finally for bulimic symptomatology, athletes who …
Date: May 2015
Creator: Carrigan, Kayla
System: The UNT Digital Library
Sleep Duration, Sleep Insufficiency, and Carotid Intima-Media Thickness (open access)

Sleep Duration, Sleep Insufficiency, and Carotid Intima-Media Thickness

Cardiovascular disease is the leading cause of death in the United States. Chronic short sleep duration is also a significant public health problem and has been linked to several markers and outcomes of cardiovascular disease. To date, inconsistency of assessments of sleep duration and insufficiency, use of covariates, and cardiovascular disease measurement across studies limits strong conclusions about the relationship between sleep duration, sleep insufficiency, and cardiovascular disease. The current study examined the association between sleep duration, sleep insufficiency, and a marker of preclinical coronary heart disease (i.e., carotid intima-media thickness) in a community sample using a cross-sectional design. Some evidence for a relationship between sleep duration and cIMT was found, with longer sleep duration predicting higher cIMT in some segments. Additionally, the interaction between sleep duration and sleep insufficiency was significant. However, neither of these effects were significant after adjusting for age and in some cases race/ethnicity, suggesting demographics may explain this association. Actigraphy and sleep diary duration assessments demonstrated significantly different correlations with cIMT in some segments, suggesting the nature of the assessment method may impact the strength or direction of the relationship between sleep duration and cIMT. Limitations and future directions are discussed.
Date: May 2015
Creator: Dietch, Jessica R.
System: The UNT Digital Library