The following thesis proposes solutions to problems in two main areas of focus, computer vision and machine learning. Chapter 2 utilizes traditional computer vision methods implemented in a novel manner to successfully identify overlays contained in broadcast footage. The remaining chapters explore machine learning algorithms and apply them in various manners to big data, multi-channel image data, and ECG data. L1 and L2 principal component analysis (PCA) algorithms are implemented and tested against each other in Python, providing a metric for future implementations. Selected algorithms from this set are then applied in conjunction with other methods to solve three distinct problems. The first problem is that of big data error detection, where PCA is effectively paired with statistical signal processing methods to create a weighted controlled algorithm. Problem 2 is an implementation of image fusion built to detect and remove noise from multispectral satellite imagery, that performs at a high level. The final problem examines ECG medical data classification. PCA is integrated into a neural network solution that achieves a small performance degradation while requiring less then 20% of the full data size.

This study uses a mixed methods approach to investigate how individuals perceive nature and engage with Texas state park (TSP) programs and resources while also identifying major barriers that visitors perceive/encounter when visiting TSPs. This study looks through the anthropological lens by using theoretical frameworks such as habitus, presentation of the social self, space and place, as well as communities of practice (CoP), to better understand the factors that influence the establishment and maintenance of an individual's relationship to nature and participation in related practices. This study illustrates how an individual's relationship to nature is influenced by experiences in early life that involve activities, landscape or bioregion, and social factors. Relationships with nature are strengthened through social support especially when CoPs are involved. By understanding park visitor experiences through motivations and limitations to participating in the outdoors, parks can expand engagement tactics, foster existing and create new CoP related to nature that aid in the introduction and adoption of outdoor learning and experiences creating lifelong stewards. The study offers recommendations on how TSPs can address visitor barriers and increase nature affinity with the use of targeted outreach and engagement methods through agency interpretive resources and programs with the goal of …

Presentation that highlights the use of basic design principles when creating presentations and posters. It was organized by the UNT Libraries' Career Development Committee and held virtually on May 12, 2020.

Weekly Jewish newspaper from Dallas, Texas that includes local, state, and national news along with extensive advertising.

Established in Waco in 1968, the Texas Ranger Hall of Fame and Museum honors the iconic Texas Rangers, a service that has existed, in one form or another, since 1823. Thirty-one individuals—whose lives span more than two centuries—have been enshrined in the Texas Ranger Hall of Fame. They have become legendary symbols of Texas and the American West. In The Ranger Ideal Volume 3, Darren L. Ivey presents capsule biographies of the twelve inductees who served Texas in the twentieth century. In the first portion of the book, Ivey describes the careers of the “Big Four” Ranger captains—Will L. Wright, Frank Hamer, Tom R. Hickman, and Manuel “Lone Wolf” Gonzaullas—as well as those of Charles E. Miller and Marvin “Red” Burton. Ivey then moves into the mid-century and discusses Robert A. Crowder, John J. Klevenhagen, Clinton T. Peoples, and James E. Riddles. Ivey concludes with Bobby Paul Doherty and Stanley K. Guffey, both of whom gave their lives in the line of duty. Using primary records and reliable secondary sources, and rejecting apocryphal tales, The Ranger Ideal presents the true stories of these intrepid men who enforced the law with gallantry, grit, and guns. This Volume 3 is the finale …

Weekly Jewish newspaper from Dallas, Texas that includes local, state, and national news along with extensive advertising.

Utilizing many sources new to publication, James L. Haley delivers a most readable and enjoyable narrative history of Texas, told through stories—the words and recollections of Texans who actually lived the state’s spectacular history. From Jim Bowie’s and Davy Crockett’s myth-enshrouded stand at the Alamo, to the Mexican-American War, and to Sam Houston’s heroic failed effort to keep Texas in the Union during the Civil War, the transitions in Texas history have often been as painful and tense as the “normal” periods in between. Here, in all of its epic grandeur, is the story of Texas as its own passionate nation.

The aim of this thesis is to narrate and analyze lynching and atypical violence in Denton County, Texas, between 1920 and 1926. Through this intensive study of a rural county in north Texas, the role of law enforcement in typical and systemic violence is observed and the relationship between Denton County Officials and the Ku Klux Klan is analyzed. Chapter 1 discusses the root of the word lynching and submits a call for academic attention to violence that is unable to be categorized as lynching due to its restrictive definition. Chapter 2 chronicles known instances of lynching in Denton County from its founding through the 1920s including two lynchings perpetrated by Klavern 136, the Denton County Klan. Chapter 3 examines the relationship between Denton County Law Enforcement and the Klan. In Chapter 4, seasons of violence are identified and applied to available historical records. Chapter 5 concludes that non-lynching violence, termed "disappearances," occurred and argues on behalf of its inclusion within the historiography of Jim Crow Era criminal actions against Black Americans. In the Prologue and Epilogue, the development and dissolution of the St. John's Community in Pilot Point, Texas, is narrated.

This qualitative study utilized the protective action decision model to explore the risk perceptions and hazard adjustments to the earthquake risk of residents in El Reno, Oklahoma.

This work describes ethnographic research completed in order to understand how local community members in Denton, Texas define, conceptualize, and speak about sustainability. The goal of this research is to encourage a more representative approach to sustainability initiatives within the City of Denton by uniting community ideas with local governance. Data for this study was collected through semi-structured interviews with residents, participant observation at community meetings, and quantitative survey analysis. Through the use of a Foucauldian framework for analysis, in conjunction with David Harvey's "entrepreneurial city," and work done in the field of environmental justice, this study highlights a potential link between neoliberal approaches to city governance and community perceptions of sustainability. This research concludes by calling for more representation of all community members within local sustainability initiatives, and provides several suggestions for how this can be achieved.

Denton County and the City of Denton are named for pioneer preacher, lawyer, and Indian fighter John B. Denton, but little has been known about him. He was an orphan in frontier Arkansas who became a circuit-riding Methodist preacher and an important member of a movement of early settlers bringing civilization to North Texas. After becoming a ranger on the frontier, he ultimately was killed in the Tarrant Expedition, a Texas Ranger raid on a series of villages inhabited by various Caddoan and other tribes near Village Creek on May 24, 1841. Denton’s true story has been lost or obscured by the persistent mythologizing by publicists for Texas, especially by pulp western writer Alfred W. Arrington. Cochran separates the truth from the myth in this meticulous biography, which also contains a detailed discussion of the controversy surrounding the burial of John B. Denton and offers some alternative scenarios for what happened to his body after his death on the frontier.

During the Great Depression, for the first time in its history, the federal government provided relief to the unemployed and destitute through myriad New Deal agencies. This dissertation examines how "general relief" (direct or "make-work") from federal programs—primarily the Emergency Relief and Construction Act (ERCA) and Federal Emergency Relief Administration (FERA)—was acquired and administered by the government of Texas through state administrative agencies. These agencies included the Chambers of Commerce (1932-1933), Unofficial Texas Relief Commission (1933), Texas Rehabilitation and Relief Commission (1933), Official Texas Relief Commission (1933-1934), Texas Relief Commission Division of the State Board of Control (1934), and the Department of Public Welfare (1939). Overall, the effective administration of general relief in the Lone Star State was undermined by a political ideology that persisted from, and was embodied by, the "Redeemer" Constitution of 1876.

The purpose of this study was to investigate the effects of Pb and hypoxia co-exposure on Pb toxicity and Ca homeostasis in early life stage (ELS) zebrafish (Danio rerio). Previous evidence indicates that exposure of ELS zebrafish to hypoxia (~20% air saturation) reduces Ca uptake, likely through down-regulation of the apical epithelial Ca channel (ECaC). Considering that Pb and Ca are known antagonists and compete for uptake pathways, it was hypothesized that co-exposure of Pb with hypoxia would decrease Pb toxicity by reducing Pb uptake (likely mediated through a reduced number of ECaCs). However, it was shown that at 96 hpf, whole body accumulation of both Pb and Ca was lower at 40% air saturation compared to 100% and 20% air saturation. This result closely aligned with the 96h LC50 results which showed the highest mortality of zebrafish at 40% compared to the other air saturation levels. This suggests that toxicity is likely the result of exacerbated hypocalcemia at 40% air saturation due to both Pb competition for Ca binding to Ca uptake channels/transporters, such as ECaC, and potentially reduced expression of such channels/transporters in response to this level of hypoxia. Overall, it appears that ELS zebrafish respond differentially to …

Weekly Jewish newspaper from Dallas, Texas that includes local, state, and national news along with extensive advertising.

Fort Worth Stories is a collection of thirty-two bite-sized chapters of the city’s history. Did you know that the same day Fort Worth was mourning the death of beloved African American “Gooseneck Bill” McDonald, Dallas was experiencing a series of bombings in black neighborhoods? Or that Fort Worth almost got the largest statue to Robert E. Lee ever put up anywhere, sculpted by the same massive talent that created Mount Rushmore? Or that Fort Worth was once the candy-making capital of the Southwest and gave Hershey, Pennsylvania, a good run for its money as the sweet spot of the nation? A remarkable number of national figures have made a splash in Fort Worth, including Theodore Roosevelt while he was President; Vernon Castle, the Dance King; Dr. H.H. Holmes, America’s first serial killer; Harry Houdini, the escape artist; and Texas Guinan, star of the vaudeville stage and the big screen. Fort Worth Stories is illustrated with 50 photographs and drawings, many of them never before published. This collection of stories will appeal to all who appreciate the Cowtown city.

While ozone design values have decreased since 2000, the values measured in Denton Airport South (DEN), an exurban region in the northwest tip of the Dallas-Fort Worth (DFW) metroplex, remains above those measured in Dallas Hinton (DAL) and Fort Worth Northwest (FWNW), two extremely urbanized regions; in addition, all three sites remained in nonattainment of National Ambient Air Quality Standards (NAAQS) ozone despite reductions in measured NOx and CO concentrations. The region's inability to achieve ozone attainment is tied to its concentration of total non-methane organic compounds (TNMOC). The mean concentration of TNMOC measured at DAL, FWNW, and DEN between 2000 and 2018 were 67.4 ± 1.51 ppb-C, 89.31 ± 2.12 ppb-C, and 220.69 ± 10.36 ppb-C, respectively. Despite being the least urbanized site of the three, the TNMOC concentration measured at DEN was over twice as large as those measured at the other two sites. A factor-based source apportionment analysis using positive matrix factorization technique showed that natural gas was a major contributing source factor to the measured TNMOC concentrations at all three sites and the dominant source factor at DEN. Natural gas accounted for 32%, 40%, and 69% of the measured TNMOC concentration at DAL, FWNW, and DEN, …

Weekly Jewish newspaper from Dallas, Texas that includes local, state, and national news along with extensive advertising.

The potential of physiologically relevant in vitro cell culture models for studying physiological and pathophysiological phenomena has been widely recognized as replacements for animal and conventional in vitro models. To create models that accurately replicate the structure and function of tissues and organs, it is essential to comprehend the biophysical and mechanical features of the extracellular matrix (ECM) and incorporate them into the in vitro cell culture models. Therefore, we first aimed to investigate how nanotopography can modulate cell behaviors by studying cell behaviors on nanostructures of various aspect ratios on a cobalt-chromium-molybdenum (CoCrMo) alloy surface. We also explored the impact of nanofibrous membranes on the formation of alveolar epithelium, which is critical for lung alveolar interstitium chips. In addition, we investigated the effect of mechanical stretch on cell behaviors and focused on how the dimensionality of the stretch affects cell behaviors. To create physiologically relevant in vitro models based on our findings, we engineered a stem cell niche using a combination of nanofibrous membranes, mechanical stretch, and a soft substrate, and evaluated its impact on stem cell behaviors. Finally, we created a biomimetic human lung interstitium chip for application in physiological and pathophysiological in vitro studies.

“There are some poets we admire for a mastery that allows them to tell a story, express an epiphany, form a conclusion, all gracefully and even memorably— yet language in some way remains external to them. But there are other poets in whom language seems to arise spontaneously, fulfilling a design in which the poet’s intention feels secondary. Books by these poets we read with a gathering sense of excitement and recognition at the linguistic web being drawn deliberately tighter around a nucleus of human experience that is both familiar and completely new, until at last it seems no phrase is misplaced and no word lacks its resonance with what has come before. Such a book is Austin Segrest’s Door to Remain.”— Karl Kirchwey, author of Poems of Rome and judge

Supply chain transparency is principally focused on a company's efforts toward disclosing information about their products, and their supply chain operations to the public. Essay 1 is a conceptual paper that examines the risks of disclosing supply chain mapping information to consumers and proposes an approach to developing risk mitigation strategies. This essay also develops a set of supply chain mapping conventions that support the development of an agility-focused supply chain map. Essay 2 employs an experimental design methodology to examine the impact of disclosing the ethnicity of a supplier on consumers' behaviors, while also capturing the extent to which a consumers' ethnic identity and prosocial disposition influence their behaviors. Finally, also using an experimental design, Essay 3 analyzes consumer outcomes based on disclosing no, partial, and full supply chain transparency information, and accounts for heterogenous consumer traits such as the importance of information to a consumer and their perceived quality of information. Collectively, these essays advance the body of knowledge that seeks to understand the risks and benefits of supply chain transparency, by conceptually identifying risks and proposing an approach to minimize the risks associated with supply chain transparency, and by illuminating the conditions that prompt favorable consumer outcomes.

Reptiles can often experience perturbations that greatly influence their metabolic status (e.g., temperature, exercise, digestion, and ontogeny). The most common cause of fluctuations in metabolic status in post-embryonic reptiles is arguably digestion and physical activity (which will be further referred to as exercise). The objective of this thesis is to determine the mechanisms involved in CO2 transport during digestion, determine the mechanisms that allow for the maintenance of acid-base homeostasis during digestion, and observing the effect of an understudied form of exercise in semi-aquatic reptiles on the regulation of metabolic acidosis and base deficit. This dissertation provided evidence for potentially novel and under investigated mechanisms for acid-base homeostasis (e.g., small intestine and tissue buffering capacity; Chapters 3 & 4), while also debunking a proposed hypothesis for the function of an anatomical feature that still remains a mystery to comparative physiologist (Chapter 2). This thesis is far from systematic and exhaustive in its approach, however, the work accomplished in this dissertation has become the foundation for multiple distinct paths for ecologically relevant investigations of the regulation of metabolic acidosis/alkalosis in reptiles.

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.

There has been a rapid surge toward "organic" products devoid of GMOs, MSGs, and other common compounds found in processed foods that continue to indicate an association with an increased risk for disease. These consumers seek nutrients and vitamins that are lacking in their diet and lifestyle in the form of nutraceuticals for disease prevention and treatment as well as overall lifestyle enhancement. However, these products generally lack clinical evidence as well as legal definition. Due to this ambiguity, nutraceuticals are neither considered a food product nor a pharmaceutical product. Furthermore, due to their alleged natural properties allowing for safe, therapeutic effects, nutraceuticals are being eagerly sought after by consumers in the place of pharmaceuticals. Additionally, since nutraceutical substances are "naturally" derived, there is a general lack of regulation regarding the manufacturing and distribution process. This mismanagement leads to lack of quality assurance (QA) and quality control (QC) protocols strictly implemented to define appropriate production and storage parameters. Without these critical measures, consumers are subjected to contamination of their products resulting from improper storage conditions and unmanaged production. These contaminants often include heavy metal impurities, pesticides, bacterial activity, and may also be adulterated with illicit drugs, all leading to detrimental …

Weekly Jewish newspaper from Dallas, Texas that includes local, state, and national news along with extensive advertising.