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Electrodeposition of Nickel and Nickel Alloy Coatings with Layered Silicates for Enhanced Corrosion Resistance and Mechanical Properties
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The new nickel/layered silicate nanocomposites were electrodeposited from different pHs to study the influence on the metal ions/layered silicate plating solution and on the properties of the deposited films. Nickel/layered silicate nanocomposites were fabricated from citrate bath atacidic pHs (1.6−3.0), from Watts’ type solution (pH ~4-5), and from citrate bath at basic pH (~9). Additionally, the new nickel/molybdenum/layered silicate nanocomposites were electrodeposited from citrate bath at pH 9.5. The silicate, montmorillonite (MMT), was exfoliated by stirring in aqueous solution over 24 hours. The plating solutions were analyzed for zeta potential, particle size, viscosity, and conductivity to investigate the effects of the composition at various pHs. The preferred crystalline orientation and the crystalline size of nickel, nickel/layered silicate, nickel/molybdenum, and nickel/molybdenum/layered silicate films were examined by X-ray diffraction. The microstructure of the coatings and the surface roughness was investigated by scanning electron microscopy and atomic force microscopy. Nickel/molybdenum/layered silicate nanocomposites containing low content of layered silicate (1.0 g/L) had increase 32 % hardness and 22 % Young’s modulus values over the pure nickel/molybdenum alloy films. The potentiodynamic polarization and electrochemical impedance measurements showed that the nickel/molybdenum/layered silicate nanocomposite layers have higher corrosion resistance in 3.5% NaCl compared to the pure alloy films. The corrosion current density of the nickel/molybdenum/layered silicate nanocomposite composed of 0.5 g/L MMT is 0.63 µA·cm-2 as compare to a nickel/molybdenum alloy which is 2.00 µA·cm-2. digital.library.unt.edu/ark:/67531/metadc699999/
Evidence for Multiple Functions of a Medicago Truncatula Transporter
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Legumes play an important role in agriculture as major food sources for humans and as feed for animals. Bioavailable nitrogen is a limiting nutrient for crop growth. Legumes are important because they can form a symbiotic relationship with soil bacteria called rhizobia that results in nitrogen-fixing root nodules. In this symbiosis, rhizobia provide nitrogen to the legumes and the legumes provide carbon sources to the rhizobia. The Medicago truncatula NPF1.7/NIP/LATD gene is essential for root nodule development and also for proper development of root architecture. Work in our lab on the MtNPF1.7/MtNIP/LATD gene has established that it encodes a nitrate transporter and strongly suggests it has another function. Mtnip-1/latd mutants have pleiotropic defects, which are only partially explained by defects in nitrate transport. MtNPF1.7/NIP/LATD is a member of the large and diverse NPF/NRT1(PTR) transporter family. NPF/NRT1(PTR) members have been shown to transport other compounds in addition to nitrate: nitrite, amino acids, di- and tri-peptides, dicarboxylates, auxin, abscisic acid and glucosinolates. In Arabidopsis thaliana, the AtNPF6.3/NRT1.1( CHL1) transporter was shown to transport auxin as well as nitrate. Atchl1 mutants have defects in root architecture, which may be explained by defects in auxin transport and/or nitrate sensing. Considering the pleiotropic phenotypes observed in Mtnip-1/latd mutant plants, it is possible that MtNPF1.7/NIP/LATD could have similar activity as AtNPF6.3/NRT1.1(CHL1). Experimental evidence shows that the MtNPF1.7/NIP/LATD gene is able to restore nitrate-absent responsiveness defects of the Atchl1-5 mutant. The constitutive expression of MtNPF1.7/NIP/LATD gene was able to partially, but not fully restore the wild-type phenotype in the Atchl1-5 mutant line in response to auxin and cytokinin. The constitutive expression of MtNPF1.7/NIP/LATD gene affects the lateral root density of wild-type Col-0 plants differently in response to IAA in the presence of high (1mM) or low (0.1 mM) nitrate. MtNPF1.7/NIP/LATD gene expression is not regulated by nitrate at the concentrations tested and MtNPF1.7/NIP/LATD does not regulate the nitrate-responsive MtNRT2.1 gene. Mtnip-1 plants have an abnormal gravitropic root response implicating an auxin defect. Together with these results, MtNPF1.7/NIP/LATD is associated with nitrate and auxin; however, it does not act in a homologous fashion as AtNPF6.3/NRT1.1(CHL1) does in A. thaliana. digital.library.unt.edu/ark:/67531/metadc699903/
Bank Capital, Efficient Market Hypothesis, and Bank Borrowing During the Financial Crisis of 2007 and 2008
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During the Great Recession of 2007 and 2008, liquidity and credit dried up, threatening the stability of financial institutions, particularly the banking firms. Traditional source of funds from the last resort, the Discount Window of the Federal Reserve System, failed to remedy the liquidity problem. To assuage the liquidity and credit problem, the Federal Reserve System established several emergency lending facilities and provided unprecedented amount of loans to the banking industry. Using a dataset published by Bloomberg LLP in the aftermaths of the financial crisis, which contains daily loan balances from the Fed, I conduct an event study to test whether financial markets are efficient in reflecting all public, anticipated and classified information in security prices. The most important contribution of this dissertation to the finance discipline and literature is the investigation and analysis of the Fed’s unprecedented loans to the banking industry during the Great Recession and the market reaction to it. The second major contribution of this study is the empirical test of strong form efficient market hypothesis, which has not been feasible due to legal data challenges. This dissertation has other contributions to the finance discipline and banking research. First, I develop an algorithm for measuring the amount of borrowing by banks. Second, I introduce a new “loan balance” ratio to traditional list of bank financial ratios. Third, I use event study methodologies to allow for cross-correlation, heteroscedasticity and event induced-variance change in studying US banks’ performance during the Great Recession. digital.library.unt.edu/ark:/67531/metadc699938/
Exploration of Visual, Acoustic, and Physiological Modalities to Complement Linguistic Representations for Sentiment Analysis
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This research is concerned with the identification of sentiment in multimodal content. This is of particular interest given the increasing presence of subjective multimodal content on the web and other sources, which contains a rich and vast source of people's opinions, feelings, and experiences. Despite the need for tools that can identify opinions in the presence of diverse modalities, most of current methods for sentiment analysis are designed for textual data only, and few attempts have been made to address this problem. The dissertation investigates techniques for augmenting linguistic representations with acoustic, visual, and physiological features. The potential benefits of using these modalities include linguistic disambiguation, visual grounding, and the integration of information about people's internal states. The main goal of this work is to build computational resources and tools that allow sentiment analysis to be applied to multimodal data. This thesis makes three important contributions. First, it shows that modalities such as audio, video, and physiological data can be successfully used to improve existing linguistic representations for sentiment analysis. We present a method that integrates linguistic features with features extracted from these modalities. Features are derived from verbal statements, audiovisual recordings, thermal recordings, and physiological sensors signals. The resulting multimodal sentiment analysis system is shown to significantly outperform the use of language alone. Using this system, we were able to predict the sentiment expressed in video reviews and also the sentiment experienced by viewers while exposed to emotionally loaded content. Second, the thesis provides evidence of the portability of the developed strategies to other affect recognition problems. We provided support for this by studying the deception detection problem. Third, this thesis contributes several multimodal datasets that will enable further research in sentiment and deception detection. digital.library.unt.edu/ark:/67531/metadc699996/
Jacques-antoine-hippolyte, Comte De Guibert: Father of the Grande Armée
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Jacques-Antoine-Hippolyte, comte de Guibert (1743-1790) dedicated his life and career to creating a new doctrine for the French army. Little about this doctrine was revolutionary. Indeed, Guibert openly decried the anarchy of popular participation in government and looked askance at the early days of the Revolution. Rather, Guibert’s doctrine marked the culmination of an evolutionary process that commenced decades before his time and reached fruition in the Réglement of 1791, which remained in force until the 1830s. Not content with military reform, Guibert demanded a political and social constitution to match. His reforms required these changes, demanding a disciplined, service-oriented society and a functional, rational government to assist his reformed military. He delved deeply, like no other contemporary writer, into the linkages between society, politics, and the military throughout his career and his writings. Guibert exerted an overwhelming influence on military thought across Europe for the next fifty years. His military theories provided the foundation for military reform during the twilight of the Old Regime. The Revolution, which adopted most of Guibert’s doctrine in 1791, continued his work. A new army and way of war based on Guibert’s reforms emerged to defeat France’s major enemies. In Napoleon’s hands, Guibert’s army all but conquered Europe by 1807. As other nations adopted French methods, Guibert’s influence spread across the Continent, reigning supreme until the 1830s. This dissertation adopts a biographical approach to examine Guibert’s life and influence on the creation of the French military system that led to Napoleon’s conquest of Europe. As no such biography exists in Anglophone literature, such a work will fill a crucial gap in understanding French military success to 1807. It examines the period of French military reform from 1760 to the creation and use of Napoleon’s Grande Armée from 1803 to 1807, illustrating the importance of Guibert’s systemic doctrine in the period. Moreover, the work argues that Guibert belongs in the ranks of authors whose works exerted a primary influence on the French Enlightenment and Revolution by establishing Guibert as a “Great Man” of the Republic of Letters between 1770 and his death in 1790. digital.library.unt.edu/ark:/67531/metadc700071/
High-Density Polyethylene/Peanut Shell Biocomposites
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A recent trend in the development of renewable and biodegradable materials has led to the development of composites from renewal sources such as natural fibers. This agricultural activity generates a large amount of waste in the form of peanut shells. The motivation for this research is based on the utilization of peanut shells as a viable source for the manufacture of biocomposites. High-density polyethylene (HDPE) is a plastic largely used in the industry due to its durability, high strength to density ratio, and thermal stability. This research focuses in the mechanical and thermal properties of HDPE/peanut shell composites of different qualities and compositions. The samples obtained were subjected to dynamic mechanical analysis (DMA), differential scanning calorimetry (DSC), and mechanical tensile strength tests. TO prepare the samples for analysis, the peanut shells were separated into different mesh sizes and then mixed with HDPE at different concentrations. The results showed that samples with fiber size number 10 exhibited superior strength modulus of 1.65 GPa versus results for HDPE alone at 1.32 GPa. The analysis from the previous experiments helped to determine that the fiber size number 10 at 5%wt. ratio in HDPE provides the most optimal mechanical and thermal results. From tensile tests the highest modulus of elasticity of 1.33 GPa was achieved from the samples of peanut shells size number 10 in HDPE at 20%wt. ratio, while the results for HDPE alone were only of 0.8 GPa. The results proved the hypothesis that the addition of peanut shells to HDPE enhances both the thermal and mechanical properties of the composite. digital.library.unt.edu/ark:/67531/metadc700037/
"Stealing Dreams" and Other Stories
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The critical preface, "Learning to Break the Rules" discusses workshop rules as guidelines, as well as how and why I learned to break them. The creative portion of this thesis is made up of eight short stories: "The Many Incarnations of Blazer Chief," "Anna's Monsters," "The Pecan Tree's Daughter," "When the Seas Emptied," "The Umbrella Thief," "How to Forget," "Fracture," and "Stealing Dreams." digital.library.unt.edu/ark:/67531/metadc700046/
Elizabeth Bishop in Brasil: an Ongoing Acculturation
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Elizabeth Bishop (1911–1979), one of the foremost modern American poets, lived in Brasil during seventeen-odd years beginning in 1951. During this time she composed the poetry collection Questions of Travel, stand-alone poems, and fragments as well as prose pieces and translations. This study builds on the work of critics such as Brett Millier and Lorrie Goldensohn who have covered Bishop’s poetry during her Brasil years. However, most American critics have lacked expertise in both Brasilian culture and the Portuguese language that influenced Bishop’s poetry. Since 2000, in contrast, Brasilian critic Paulo Henriques Britto has explored issues of translating Bishop’s poetry into Portuguese, while Maria Lúcia Martins and Regina Przybycien have examined Bishop’s Brasil poems from a Brasilian perspective. However, American and Brasilian scholars have yet to recognize Bishop’s journey of acculturation as displayed through her poetry chronologically or the importance of her belated reception by Brasilian literary and popular culture. This study argues that Bishop’s Brasil poetry reveals her gradual transformation from a tourist outsider to a cultural insider through her encounters with Brasilian history, culture, language, and politics. It encompasses Bishop’s published and unpublished Brasil poetry, including drafts from the Elizabeth Bishop Papers at Vassar College. On a secondary level, this study examines a reverse acculturation in how Brasilian popular and literary communities have increasingly focused on Bishop since her death, culminating in the 2013 film, Flores Raras (Reaching for the Moon in English). Understanding this extremely rare and sustained intercultural junction of Bishop in Brasil, a junction that no American poet has made since, adds a crucial angle to twentieth-first century transnational literary perspectives. digital.library.unt.edu/ark:/67531/metadc700061/
Control and Automation of a Heat Shrink Tubing Process
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Heat shrink tubing is used to insulate wire conductors, protect wires, and to create cable entry seals in wire harnessing industries. Performing this sensitive process manually is time consuming, the results are strongly dependent on the operator’s expertise, and the process presents safety concerns. Alternatively, automating the process minimizes the operators’ direct interaction, decreases the production cost over the long term, and improves quantitative and qualitative production indicators dramatically. This thesis introduces the automation of a heat shrink tubing prototype machine that benefits the wire harnessing industry. The prototype consists of an instrumented heat chamber on a linear positioning system, and is fitted with two heat guns. The chamber design allows for the directing of hot air from the heat guns onto the wire harness uniformly through radially-distributed channels. The linear positioning system is designed to move the heat chamber along the wire harness as the proper shrinkage temperature level is reached. Heat exposure time as a major factor in the heat shrink tubing process can be governed by controlling the linear speed of the heat chamber. A control unit manages the actuator position continuously by measuring the chamber’s speed and temperature. A model-based design approach is followed to design and test the controller, and MATLAB/Simulink is used as the simulation environment. A programmable logic controller is selected as the controller implementation platform. The control unit performance is examined and its responses follow the simulation results with adequate accuracy. digital.library.unt.edu/ark:/67531/metadc699928/
Evaluating the Feasibility of Accelerometers in Hand Gestures Recognition
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Gesture recognition plays an important role in human computer Interaction for intelligent computing. Major applications like Gaming, Robotics and Automated Homes uses gesture recognition techniques which diminishes the usage of mechanical devices. The main goal of my thesis is to interpret SWAT team gestures using different types of sensors. Accelerometer and flex sensors were explored extensively to build a prototype for soldiers to communicate in the absence of line of sight. Arm movements were recognized by flex sensors and motion gestures by Accelerometers. Accelerometers are used to measure acceleration in respect to movement of the sensor in 3D. Flex sensors changes its resistance based on the amount of bend in the sensor. SVM is the classification algorithm used for classification of the samples. LIBSVM (Library for Support Vector Machines) is integrated software for support vector classification, regression and distribution estimation which supports multi class classification. Sensors data is connected to the WI micro dig to digitize the signal and to transmit it wirelessly to the computing device. Feature extraction and Signal windowing were the two major factors which contribute for the accuracy of the system. Mean Average value and Standard Deviation are the two features considered for accelerometer sensor data classification and Standard deviation is used for the flex sensor analysis for optimum results. Filtering of the signal is done by identifying the different states of signals which are continuously sampled. digital.library.unt.edu/ark:/67531/metadc699862/
Environmental Imagination: the Constitution and Projection of a Sustainable Ethos
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This dissertation provides a theoretical analysis and examination of the role of imagination in the formation of an environmental ethos. The majority of ethical theories in environmental thought largely neglect the role that imagination plays in both the relationships that humans form with their environment, and the subsequent role that imagination plays in constituting the way that those relationships are understood ethically. To explore the role of imagination in constituting and subsequently projecting such an ethical way of being, this dissertation selectively analyzes the history of imagination in philosophy, cognitive science, and environmental thought. In addition, this dissertation also explores the role that images play in forming collective responses to environmental disasters, and the further role that imagination plays in overcoming the moral motivation gap. digital.library.unt.edu/ark:/67531/metadc700043/
The Pedagogy of Robert Dick
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Robert Dick is best known as a leading proponent of contemporary music and extended techniques for the flute; however, his teaching is informative on a broader level that encompasses technical and musical aspects of traditional playing as well as contemporary practices. This dissertation is intended to serve as a resource for flutists, providing a detailed documentation of his approach to playing and teaching the flute. Dick’s highly integrated pedagogy—informed by his traditional training, revolutionary work in documenting and codifying extended techniques on the flute, and his equal personal involvement in performance, composition, and improvisation—provides a strong basis and clear trajectory, musically as well as technically, to his students. The primary research material for this document is the author’s personal collection of detailed notes from her studies with Dick. Additionally, as no pedagogy exists in a vacuum, a number of sources including historical treatises and more recent published documentations of flutists’ pedagogies provide context and support. Such publications are of current and continuing educational value; considering Dick’s contributions to the development of flute playing and his integrated approach to teaching the flute, a document that accurately and thoroughly addresses his pedagogy is a logical addition to this literature. digital.library.unt.edu/ark:/67531/metadc700017/
Acute Effects of the Antibiotic Streptomycin on Neural Network Activity and Pharmacological Responses
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The purpose of this study is to find out that if antibiotic streptomycin decreases neuronal network activity or affects the pharmacological responses. The experiments in this study were conducted via MEA (multi-electrode array) technology which records neuronal activity from devices that have multiple small electrodes, serve as neural interfaces connecting neurons to electronic circuitry. The result of this study shows that streptomycin lowered the spike production of neuronal network, and also, sensitization was seen when neuronal network pre-exposed to streptomycin. digital.library.unt.edu/ark:/67531/metadc700026/
What Is Needed to Enable a Cultural Shift in the Market Research Department at the Gangler Company?
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This thesis investigates how to create an environment for organizational change within the Market Research Department at the Gangler Company (a US-based consumer products company). I explore what is influencing the current cultural environment and which of those influencers can be shifted to encourage organizational change toward the “ideal” culture that the organization has identified. Using new institutionalism as the theoretical approach, I discuss the significance of institutional forces (such as the economy and the rise in technology) on the cultural elements (i.e. behaviors, ideas, material artifacts and social structures) in the Market Research Department. Lastly, I show that by understanding those institutional influences, I can better assess what cultural elements can be shifted and which cannot. Of the cultural elements that are able to be shifted, I recommend three interventions that the organization should employ: 1) from a contrive culture to a culture of candor, 2) from a culture of division to a culture of cohesion, and 3) from a culture of knowing to a culture of learning. digital.library.unt.edu/ark:/67531/metadc700092/
Synthesis of Tethering Group on Borylazadipyrromethene Dyes to Apply to Photogalvanic Dye-sensitized Solar Cells
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This is my thesis research on the preparation of borylazadipyrromethene (azaBODIPY) dyes bearing an anchoring group, such as a carboxylic acid group, at the β-pyrrolic position of the azadipyrromethene scaffold. Carboxylate groups form covalent bonds to oxide semiconductors such as TiO2 (n-type) or Cu2O (p-type) in dye-sensitized solar cells (DSCs) or photogalvanic dye-sensitized solar cells (P-DSCs). Oxide-binding azaBODIPY dyes can be used to investigate the rate and mechanism of electron injection from the dyes to the semiconductors. Two different types of azaBODIPY (difluoroboryl and dialkynylboryl) were prepared by following previously developed methods. To convert difluoroborylazaBODIPY to the final dyes having a carboxylic acid in the β-pyrrolic position, several distinct synthetic routes were designed, adopting various reactions, such as halogenation, Sonogashira coupling, Knoevenagel condensation, Grignard reagents, Vilsmeir-Haack, and Steglich esterification. Some of these reactions were successful, but the overall synthesis to the targeted final molecule couldn’t be accomplished. Even though further studies on the synthesis of oxide-binding azaBODIPYs are needed, at least my thesis research suggests what reactions can be implemented to complete this synthesis in the future. Proton NMR (nuclear magnetic resonance) and carbon NMR were commonly used to confirm the synthesized compounds, and sometimes crystallographic information was obtained by XRD (X-ray diffraction) whenever crystals of sufficient size and quality were grown. NMR spectra, interpreted by SpinWorks 3 software, and crystal structures will be introduced in each chapter. digital.library.unt.edu/ark:/67531/metadc700072/
Patrol: Excerpts From a Novel
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The dissertation consists of a critical preface and excerpts from the novel Patrol. The preface explores how the novel Patrol utilizes characters that engage with tropes of the Romantic Genius in order to establish their subjectivity while navigating the standardizing mechanisms of twenty-first century information technologies. The preface analyzes how the rise of the organic food movement, the usage of biotech genetic engineering, and the tactics of Big Data-era marketing all inform the critical underpinnings of Patrol, situating the novel in conversation with works of fiction and nonfiction that also explore the interplay of these topics with contemporary American culture. Set primarily in Cincinnati, Ohio, the bifurcated narrative of the novel Patrol enlists the perspectives of both a science-tech father from the Boomer generation, Tim Smith, and his millennial public relations-major daughter, Sarah Smith. Both work in industries that seek to utilize the concept of the individual genius in service of quantification. Tim and Sarah’s interactions with Alexandra Smith, a family member who transitions from female to male over the course of the novel, cause both protagonists to recognize that their own identities are malleable, and this discovery goads each into reexamining their career choices and personal relationships. The plot depicts the outcome of these explorations, culminating in a series of choices for Tim and Sarah that showcase the fundamental change in each character. Unable to simply quantify themselves and those around them, Tim and Sarah instead adopt a more nuanced view of the world that seeks to find a balance between the individualistic conceit of the Romantic genius and the quantifying mandates of technology. digital.library.unt.edu/ark:/67531/metadc700057/
Business/it Alignment: the Impact of Incentive Plans on the Development of Shared Vision
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This study, utilizing Preston and Karahanna’s framework for shared vision development and Agency Theory, explores the impact of vision development factors and factors associated with incentive plans on shared vision and alignment. Results of the study confirm the strong relationship between shared vision and alignment, and indicate that having an effective management team is important with respect to developing and maintaining shared vision and alignment within the organization. Several vision development factors such as using the language of the business, participation on the top management team (TMT), and having knowledge of the business impact shared vision through their influence on teamwork. Also, results of this study suggest that participation on the TMT by the CIO/IT leader is more important than the individual’s position in the organizational hierarchy. In addition, attributes associated with incentive plans such as achievable and clear measures, measures linked to organizational goals, measures that align the interests of the individual with those of the organization, regular plan reviews, and using a balanced scorecard approach with respect to incentive plan design positively impact teamwork and shared vision. For practitioners, this highlights the importance of incentive plans as powerful tools that can be used to reinforce shared vision, effective teamwork, and alignment within the organization. Also, the CIO/IT leader needs to be knowledgeable of the business and must fill the role of both a technologist as well as an enterprise leader. This person must be an evangelist communicating the value and benefits of IT to the rest of the organization. digital.library.unt.edu/ark:/67531/metadc700035/
The Influence of Surface Roughness and Its Geometry on Dynamic Behavior of Water Droplets
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In this study the author reports the effects of surface roughness on dynamic behavior of water droplets on different types of rough structures. First, the influence of roughness geometry on the Wenzel/ Cassie-Baxter transition of water droplets on one-tier (solid substrates with Si micropillars) surfaces is studied (Chapter 3). In order to address distinct wetting behaviors of the advancing and receding motions, the author investigates the Wenzel/ Cassie-Baxter transition of water droplets on one-tier surfaces over a wide range of contact line velocities and droplet volumes in both advancing and receding movements. The discussions are strengthened by experimental results. According to the author’s analysis, the advancing contact zone tends to follow the Cassie-Baxter behavior for a wider range of geometric ratios than the receding contact zone. Physical phenomena such as advancing contact line rolling mechanism and the pinning of the receding contact line are introduced to justify distinct transition points of the advancing and receding movements respectively. Based on the analysis provided in Chapter 3, the author experimentally investigates the contact line fluctuations and contact line friction coefficients of water droplets on smooth, one-tier, and two-tier (with carbon nanotubes (CNTs) grown on Si micropillars) surfaces in Chapters 4 and 5. Both the advancing and receding contact line fluctuations/friction coefficients have been measured, analyzed and compared on smooth, one-tier, and two-tier surfaces over a wide range of contact line velocities and droplet volumes. A comprehensive analysis is provided to explain the experimental observations. digital.library.unt.edu/ark:/67531/metadc700094/
Recklessness and Light
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This dissertation contains two parts: Part I, which discusses the methods and means by which poets achieve originality within ekphrastic works; and Part II, Recklessness and Light, a collection of poems. Poets who seek to write ekphrastically are faced with a particular challenge: they must credibly and substantially build on the pieces of art they are writing about. Poems that fail to achieve invention become mere translations. A successful ekphrastic poem must in some way achieve originality by using the techniques of the artist to credibly and substantially build on the art. The preface discusses three ekphrastic poems: W.H. Auden’s “Musée des Beaux Arts,” John Ashbery’s “Self-Portrait in Convex Mirror,” and Larry Levis’ “Caravaggio: Swirl and Vortex.” In order to invent, each of these poets connects time within the paintings to time within the poem. The poets turn to techniques such as imprinting of historical context, conflation, and stranging of perspective to connect their work with the paintings. I examine these methods of generating ekphrastic poems in order to evaluate how these poets have responded to one another and to consider emerging patterns of ekphrastic poetry in the twentieth century. digital.library.unt.edu/ark:/67531/metadc700018/
Reckoning in the Redlands: the Texas Rangers’ Clean-up of San Augustine in 1935
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The subject of this manuscript is the Texas Rangers “clean-up” of San Augustine, which was undertaken between late January 1935 until approximately July 1936 at the direction of then newly-elected Governor James V. Allred, in response to the local “troubles” that arose from an near decade long “crime wave.” Allred had been elected on a platform advocating dramatic reform of state law enforcement, and the success of the “clean-up” was heralded as validation of those reforms, which included the creation of – and the Rangers’ integration into – the Texas Department of Public Safety that same year. Despite such historic significance for the community of San Augustine, the state, and the Texas Rangers, no detailed account has ever been published. The few existing published accounts are terse, vague, and inadequate to address the relevant issues. They are often also overly reliant on limited oral accounts and substantially factually flawed, thereby rendering their interpretive analysis moot in regard to certain issues. Additionally, it is a period of San Augustine’s history that haunts that community to this day, particularly as a result of the wide-ranging myths that have taken hold in the absence of a thoroughly researched and documented published account. Concerns over offending the descendants of the key antagonists, many of whom still live in the area, has long made local historians wary of taking on the topic. Nevertheless, many of them have privately expressed the need for just such a treatment, as they have crossed paths with enough evidence in pursuit of other topics that they recognize and appreciate the historical significance, and lack of an accurate modern understanding, of those events. Furthermore, descendants of some of the victims have expressed frustration over the lack of such an account, because it makes them feel victimized once more to see the mistreatment and suffering of their relatives, which shaped many lives within their families for generations, continue to be ignored in the local historical record. Those events did not occur in a vacuum, and their effects linger still. digital.library.unt.edu/ark:/67531/metadc700074/
“The Angular Degrees of Freedom” and Other Stories
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The preface, " Performing Brain Surgery: The Problematic Nature of Endings in Short Fiction," deals with the many and varied difficulties short story writers encounter when attempting to craft endings. Beginning with Raymond Carver and Flannery O’Connor and moving to my own work, I discuss some of the obscure criteria used to designate a successful ending, as well as the more concrete idea of the ending as a unifying element. Five short stories make up the remainder of this thesis: "In-between Girls," "Crocodile Man," "Surprising Things, Sometimes Amusing," "Good Jewelry," and "The Angular Degrees of Freedom." digital.library.unt.edu/ark:/67531/metadc700030/
The Academic Steroid: Nonmedical Use of Prescription Stimulants at a North Texas University
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The goal of this study was to determine the extent, motivations, and justifications of nonmedical prescription stimulant use among the population at a large public university in the North Texas region. Participants consisted of 526 undergraduate students enrolled at the studied university during the spring and summer 2014 semesters. The findings of the study suggest that the nonmedical use by students was higher than the findings in much of the current literature, but was within the parameters established in the literature. The primary motivation for nonmedical use was academic in nature and was justified by moderation of nonmedical use to strategic academic times. digital.library.unt.edu/ark:/67531/metadc699893/
Thucydides’ Sparta: Law, Piety, and the Regime
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My dissertation investigates Thucydides’ presentation of Sparta. By viewing the war through Sparta, one is confronted with debates on the moral dimensions of war. Sparta decries the imperialism of Athens as unjust and while the Athenians imply that such claims are merely Spartan ‘hypocrisy’ and therefore that Sparta does not truly take justice seriously, my study contends that the Spartan concern with justice and piety is genuine. While the Athenians present a sophisticated and enlightened view of what they believe guides all political actions (a view most scholars treat as Thucydides’ own) my study argues that Sparta raises problems for key arguments of the ‘Athenian thesis.’ Through a closer study of Thucydides’ Sparta, including his neglected Book 5, I locate details of both Sparta’s prosecution of the war and their regime that must be considered before agreeing with the apparent sobriety and clear-sightedness of the Athenians, thus leading the reader into the heart of Thucydides’ view of morality in both foreign affairs and domestic politics. A portion of this research is currently being prepared as an article-length study on the broad and important issue of hypocrisy in foreign affairs among states. digital.library.unt.edu/ark:/67531/metadc699880/
Structural, Thermal and Acoustic Performance of Polyurethane Foams for Green Buildings
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Decreasing the carbon footprint through use of renewable materials has environmental and societal impact. Foams are a valuable constituent in buildings by themselves or as a core in sandwich composites. Kenaf is a Southeast USA plant that provides renewable filler. The core of the kenaf is porous with a cell size in a 5-10 micrometer range. The use of kenaf core in foams represents a novel multiscalar cellular structural composite. Rigid polyurethane foams were made using free foaming expansion with kenaf core as filler with loadings of 5, 10 and 15 %. Free foaming was found to negatively affect the mechanical properties. An innovative process was developed to introduce a constraint to expansion during foaming. Two expansion ratios were examined: 40 and 60 % (decreasing expansion ratio). MicroCT and SEM analysis showed a varying structure of open and closed cell pores. The mechanical, thermal insulation, acoustic properties were measured. Pure PU foam showed improved cell size uniformity. Introducing kenaf core resulted in decreasing the PU performance in the free expansion case. This was reversed by introducing constraints. To understand the combined impact of having a mixed close cell and open cell architecture, finite element modeling was done using ANSYS. Models were created with varying percentages of open, closed, and bulk cells to encompass entire range of foam porosities. Net zero energy building information modelling was conducted using EnergyPlus was conducted using natural fiber composite skins. Environmental impacts for instance global warming potential, acidification, eutrophication, fossil fuel consumption, ozone depletion, and smog potential of the materials used in construction was studied using life cycle assessment. The results showed improvement on energy consumption and carbon footprint. digital.library.unt.edu/ark:/67531/metadc699971/
Smartphone-based Household Travel Survey-a Literature Review, an App, and a Pilot Survey
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High precision data from household travel survey (HTS) is extremely important for the transportation research, traffic models and policy formulation. Traditional methods of data collection were imprecise because they relied on people’s memories of trip information, such as date and location, and the remainder data had to be obtained by certain supplemental tools. The traditional methods suffered from intensive labor, large time consumption, and unsatisfactory data precision. Recent research trends to employ smartphone apps to collect HTS data. In this study, there are two goals to be addressed. First, a smartphone app is developed to realize a smartphone-based method only for data collection. Second, the researcher evaluates whether this method can supply or replace the traditional tools of HTS. Based on this premise, the smartphone app, TravelSurvey, is specially developed and used for this study. TravelSurvey is currently compatible with iPhone 4 or higher and iPhone Operating System (iOS) 6 or higher, except iPhone 6 or iPhone 6 plus and iOS 8. To evaluate the feasibility, eight individuals are recruited to participate in a pilot HTS. Afterwards, seven of them are involved in a semi-structured interview. The interview is designed to collect interviewees’ feedback directly, so the interview mainly concerns the users’ experience of TravelSurvey. Generally, the feedback is positive. In this study, the pilot HTS data is successfully uploaded to the server by the participants, and the interviewees prefer this smartphone-based method. Therefore, as a new tool, the smartphone-based method feasibly supports a typical HTS for data collection. digital.library.unt.edu/ark:/67531/metadc700116/
Journal of Applied Rehabilitation Counseling, Volume 46, Number 1, Spring 2015
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Journal of Applied Rehabilitation Counseling is the official publication of the National Rehabilitation Counseling Association (NRCA). The JARC is published quarterly, Spring, Summer, Fall and Winter. JARC is a journal of opinion and research in professional rehabilitation counseling and addresses the needs of individuals employed in a wide variety of work settings and with wide-ranging professional interests. In the current issue (Vol. 46, No.1) of JARC, the following five articles were included: - Disability Adjustment and Vocational Guidance Counseling for Individuals with Traumatic Brain Injury (Christina Dillahunt-Aspillaga, Tammy Jorgensen-Smith, Sarah Ehlke, Ardis Hanson, Melanie Sosinski, and Cristina M. Gonzalez) - Treatment Planning for Individuals with Lupus: Case Conceptualization Using the DOACLIENTMAP Framework (Neelam Agarwal, Erin F. Barnes, and Vinod Kumar) - Trauma and Returning to Work: Women's Lived Experiences and its Implications for Vocational Rehabilitation Counseling (Mary Ballou, Oyenike Balogun, Galina Gittens, Atsushi Matsumoto, and William Sanchez) - A Guide to Developing Evidence-based Programs in Rehabilitation Counseling Research (Gina R. Oswald, Mary J. Huber, and Judson Workman) - Rural Ethics and Mental Health: An Overview for Rehabilitation Counselors (Wendy A. Coduti, and Melissa Manninen Luse) digital.library.unt.edu/ark:/67531/metadc673714/
Journal of Applied Rehabilitation Counseling, Volume 46, Number 2, Summer 2015
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Journal of Applied Rehabilitation Counseling is the official publication of the National Rehabilitation Counseling Association (NRCA). The JARC is published quarterly, Spring, Summer, Fall and Winter. JARC is a journal of opinion and research in professional rehabilitation counseling and addresses the needs of individuals employed in a wide variety of work settings and with wide-ranging professional interests. In this edition of JARC (Vol. 46, No.2), the following articles were included: -The Potential Impact of the Legalization and Decriminalization of Marijuana on the Vocational Rehabilitation Process. Why the Buzz? (Stephanie L. Lusk, Teresia M. Paul, & Raylon Wilson) -Does the Purpose for Using a Service Dog Make a Difference in the Perceptions of What it Takes to Create Successful Outcomes in the Workplace? (Margaret Glenn & Kendra Thorne) -New Immigrating Racial and Ethnic Populations and "Trends Impacts" on State Vocational Rehabilitation Agencies. (Kenyotta Eugene Cross, Corey L. Moore, Edward O. Manyibe, Fariborz Aref, Andre L. Washington, Ahondju Umadjela, Perry R. Sanders, Hossein Sarjeh Payma, Jyoti Pandey, & Dionna Cyprian) -Depressive Disorder Symptoms and Unemployment Among Individuals with Disabilities: Analysis of the 2012 Behavioral Risk Factor Surveillance System (BRFSS). (George C.T. Mugoya) -Preferred Qualities of Community Rehabilitation Providers in State Vocational Rehabilitation. (Ashley A. Kaseroff, Allison R. Fleming, Garrett E. Huck, & Brian N. Phillips) digital.library.unt.edu/ark:/67531/metadc673713/
Joseph Paul Vejvanovsky Sonata Tribus
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Pavel Joseph Vejvanovsky,(composer ca. 1640-1693) - Play ... Sonata Tribus for Trumpet, Trombone, Violin, and Bass Continuo ... digital.library.unt.edu/ark:/67531/metadc501429/
Joseph Paul Vejvanovsky Sonata XXIX
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Joseph Paul Vejvanovsky,(composer ca. 1640-1693) - Play ... Sonata XXIX for Trumpets, Trombone, 2 Violins, Viola, and Bass Continuo ... digital.library.unt.edu/ark:/67531/metadc501434/
Concerto a VII Clarini con Tymp.
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Johann Ernst Altenburg has been called «the last representative of the heroic guild of trumpeters and timpanists.» Born in Weissenfels on June 15, 1734, he was apprenticed to his father Johann Caspar Altenburg (1689-1761) at the tender age of two and released from his articles as a trumpeter sixteen years later. ... digital.library.unt.edu/ark:/67531/metadc501431/
Johann Heinrich Schmelzer Sonata à 3
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Philipp Jakob Rittler (composer ca. 1637-1690) - Play streams in full ... Sonata a 17, for 6 trumpets, 3 trombones, 2 violins, 3 violas, timpani and continuo ... digital.library.unt.edu/ark:/67531/metadc501432/
Joseph Paul Vejvanovsky Sonata à 4 in g Minor
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Pavel Joseph Vejvanovsky,(composer ca. 1640-1693) - Play ... Sonata à 4 in g Minor for Trumpet, Strings, and Bass Continuo ... digital.library.unt.edu/ark:/67531/metadc501430/
Philipp Jakob Rittler Sonata à 18
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Philipp Jakob Rittler (composer ca. 1637-1690) - Play streams in full ... Sonata a 18, for 6 trumpets, 3 trombones, 2 violins, 3 violas, timpani and continuo ... digital.library.unt.edu/ark:/67531/metadc501433/
Philipp Jakob Rittler Sonata à 17
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Philipp Jakob Rittler (composer ca. 1637-1690) - Play streams in full ... Sonata a 17, for 6 trumpets, 3 trombones, 2 violins, 3 violas, timpani and continuo ... digital.library.unt.edu/ark:/67531/metadc501435/
A Multimedia Atlas of Dissection for Comparative Anatomy of the Vertebrates
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This interactive multimedia content is part of the thesis that was prepared for the degree of Master of Science in Biology: http://digital.library.unt.edu/ark:/67531/metadc2224. Traditional methods of teaching the laboratory course for Comparative Anatomy of the Vertebrates could be improved by applying current computer technology to construct an interactive, multimedial atlas of dissection. Five specimens used in comparative anatomy courses at most institutions were chosen as representative members of the Phylum Chordata: amphioxus, lamprey, dogfish shark, mud puppy, and cat. Specimens were dissected according to the modified method of Wischnitzer, 1993, and each stage was photographed with a Kodak DC120 digital zoom camera. These images were processed on a Power Macintosh 7600 computer with Adobe Photoshop v. 5.0. The atlas was constructed from these images using Macromedia Authorware v. 4.0.3. Each image contains a series of interactive objects that display a highlight and descriptive text as the cursor passes over each object. digital.library.unt.edu/ark:/67531/metadc500425/
The Contribution of Mira Behn and Sarala Behn to Social and Environmental Transformation in the Indian State of Uttarakhand
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The influence of Mohandas K. Gandhi on social and environmental movements in post-colonial India has been widely acknowledged. Yet, the contributions of two European associates of Gandhi, Madeleine Slade and Catherine Mary Heilemann, better known in India as Mira Behn and Sarala Behn, have not received the due attention of the academic community. This dissertation is an examination of the philosophy and social activism of Mira Behn and Sarala Behn and their roles in the evolution of Gandhian philosophy of socioeconomic reconstruction and environmental conservation in the present Indian state of Uttarakhand. Instead of just being acolytes of Gandhi, I argue that these women developed ideas and practices that drew upon from an extensive intellectual terrain that cannot be limited to Gandhi’s work. I delineate the directions in which Gandhian thought and experiments in rural development work evolved through the lives, activism, and written contributions of these two women. Particularly, I examine their influence on social and environmental movements, such as the Chipko and the Anti-Tehri Dam movements, and their roles in promoting grassroots social development and environmental sustainability in the mountain communities of Uttarakhand. Mira Behn and Sarala Behn’s integrative philosophical worldviews present epistemological, sociopolitical, ethical, and metaphysical principles and practices that have local and global significance for understanding interfaith dialog, social justice, and environmental sustainability and thus constitute a useful contribution to the theory and practice of human emancipation in our times. digital.library.unt.edu/ark:/67531/metadc499983/
The Effect of Natural Gas Well Setback Distance on Drillable Land in the City of Denton, Texas
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Municipalities protect human health and environmental resources from impacts of urban natural gas drilling through setback distances; the regulation of distances between well sites and residences, freshwater wells, and other protected uses. Setback distances have increased over time, having the potential to alter the amount and geographical distribution of drillable land within a municipality, thereby having implications for future land use planning and increasing the potential for future incompatible land uses. This study geographically applies a range of setback distances to protected uses and freshwater wells in the city limits of Denton, Texas to investigate the effect on the amount of land remaining for future gas well development and production. Denton lies on the edge of a productive region of the Barnett Shale geological formation, coinciding with a large concentration of drillable land in the southwestern region of the study area. This region will have the greatest potential for impacts to future municipal development and land use planning as a result of future gas well development and higher setback standards. Given the relatively high acreage of drillable land in industrially zoned subcategory IC-G and the concern regarding gas well drilling in more populated areas, future drilling in IC-G, specifically in IC-G land cover classes mowed/grazed/agriculture and herbaceous, would have the least impact on residential uses and tree cover, as well as decreasing the potential for future incompatible land uses. digital.library.unt.edu/ark:/67531/metadc499998/
Ab Initio and Density Functional Investigation of the Conformer Manifold of Melatonin and a Proposal for a Simple Dft-based Diagnostic for Nondynamical Correlation
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In this work we address two problems in computational chemistry relevant to biomolecular modeling. In the first project, we consider the conformer space of melatonin as a a representative example of “real-life” flexible biomolecules. Geometries for all 52 unique conformers are optimized using spin-component scaled MP2, and then relative energies are obtained at the CCSD (T) level near the complete basis set limit. These are then used to validate a variety of DFT methods with and without empirical dispersion corrections, as well as some lower-level ab initio methods. Basis set convergence is found to be relatively slow due to internal C-H…O and C-H…N contacts. Absent dispersion corrections, many DFT functionals will transpose the two lowest conformers. Dispersion corrections resolve the problem for most functionals. Double hybrids yield particularly good performance, as does MP2.5. In the second project, we propose a simple DFT-based diagnostic for nondynamical correlation effects. Aλ= (1-TAE [ΧλC]/TAE[XC])/λ where TAE is the total atomization energy, XC the “pure” DFT exchange-correlation functional, and ΧλC the corresponding hybrid with 100λ% HF-type exchange. The diagnostic is a good predictor for sensitivity of energetics to the level of theory, unlike most of the wavefunction-based diagnostics. For GGA functionals, Aλ values approaching unity indicate severe non-dynamical correlation. The diagnostic is only weakly sensitive to the basis set (beyond polarized double zeta) and can be applied to problems beyond practical reach of wavefunction ab-initio methods required for other diagnostics. digital.library.unt.edu/ark:/67531/metadc500195/
Thermoplastic and Thermoset Natural Fiber Composite and Sandwich Performance
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The objective of this thesis is to investigate the effects of adding natural fiber (kenaf fiber, retted kenaf fiber, and sugarcane fiber) into polymer materials. The effects are obtained by considering three main parts. 1. Performance in thermoplastic composites. The effect of fiber retting on polymer composite crystallization and mechanical performance was investigated. PHBV/PBAT in 80/20 blend ratio was modified using 5% by weight kenaf fiber. Dynamic mechanical analysis of the composites was done to investigate the glass transition and the modulus at sub-ambient and ambient temperatures. ESEM was conducted to analyze fiber topography which revealed smoother surfaces on the pectinase retted fibers. 2. Performance in thermoset composites. The effect of the incorporation of natural fibers of kenaf and of sugarcane combined with the polyester resin matrix is investigated. A comparison of mechanical properties of kenaf polyester composite, sugarcane polyester composite and pure polyester in tensile, bending, dynamic mechanical thermal analysis (DMA) and moisture test on performance is measured.. 3. Performance in sandwich composites. The comparison of the performance characteristics and mechanical properties of natural fiber composites panels with soft and rigid foam cores are evaluated. A thorough test of the mechanical behavior of composites sandwich materials in tensile, bending and DCB is presented here. digital.library.unt.edu/ark:/67531/metadc500002/
Optimization of Superhydrophobic Surfaces to Maintain Continuous Dropwise Condensation
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In the past decade, the condensation on superhydrophobic surfaces has been investigated abundantly to achieve dropwise condensation. There is not a specific approach in choosing the size of the roughness of the superhydrophobic surfaces and it was mostly selected arbitrarily to investigate the behavior of condensates on these surfaces. In this research, we are optimizing the size of the roughness of the superhydrophobic surface in order to achieve dropwise condensation. By minimizing the resistances toward the transition of the tails of droplets from the cavities of the roughness to the top of the roughness, the size of the roughness is optimized. It is shown that by decreasing the size of the roughness of the superhydrophobic surface, the resistances toward the transition of the tails of droplets from Wenzel state to Cassie state decrease and consequently dropwise condensation becomes more likely. digital.library.unt.edu/ark:/67531/metadc500016/
Forgotten Glory - Us Corps Cavalry in the Eto
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The American military experience in the European Theater of Operations during the Second World War is one of the most heavily documented topics in modern historiography. However, within this plethora of scholarship, very little has been written on the contributions of the American corps cavalry to the operational success of the Allied forces. The 13 mechanized cavalry groups deployed by the U.S. Army served in a variety of roles, conducting screens, counter-reconnaissance, as well as a number of other associated security missions for their parent corps and armies. Although unheralded, these groups made substantial and war-altering impacts for the U.S. Army. digital.library.unt.edu/ark:/67531/metadc500140/
Daily-collected Sleep Diaries Compared to Weekly-collected Sleep Diaries Via Actigraph Concordance
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Both sleep diaries and actigraphy have been recommended to assess sleep in research and clinical settings. Investigators have traditionally used sleep diaries that were completed daily by participants and collected weekly but have recently begun using sleep diaries that are both completed and collected daily. No research had previously assessed the agreement between daily-collected sleep diaries and actigraph data over one week. Undergraduate students were randomly assigned to use daily- or weekly-collected sleep diaries. Sleep parameters obtained from these measures were compared to each other via concordance with concurrent actigraph data. It was hypothesized that daily-collected sleep diaries would have greater concordance with actigraphy than weekly-collected sleep diaries. Results indicated that daily-collected sleep diaries provided more reliable data than weekly-collected sleep diaries, but the differences were not statistically significant. Additional aims examined self-reported sleep diary adherence, the participation day number, and day of the week. There were trends for the Daily group to have better adherence. Overall concordance did not change based on the day number or day of the week. Both sleep diaries yield comparable sleep parameter data, suggesting that clinicians and researchers can use either method to estimate sleep parameters. digital.library.unt.edu/ark:/67531/metadc500117/
El Cine De Terror Español Como Espejo De La Cultura Española
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This study traces the history and culture of Spain as seen through the lens of the nation´s production of horror cinema. Starting from the boom of Spanish horror film in the early 1960s, the thesis compares and contrasts the political and social aspects of Spanish society throughout three distinct eras of the 20th century: 1962 – 1975 (the boom of Spanish horror film through the Franco dictatorship), 1975 – 1999 (the transition to democracy through the end of the 20th century) and 2000 – present (the 21st century). Movies as diverse as Gritos en la noche (1962, Jesús Franco), ¿Quién puede matar a un niño? (1976, Narciso Ibáñez Serrador) and Angustia (1987, Bigas Luna) are framed by culturally-related anectodes as well as correlations to their respective social environments. Special attention has been paid to the production and release of each film, especially in regards to censorship during the Franco dictatorship. The results show that Spanish horror cinema has acted as a true mirror to culture, society and politics in its native country throughout the 20th century and that this trend will likely extend in to the future. digital.library.unt.edu/ark:/67531/metadc500060/
Effects of Quantum Coherence and Interference
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Quantum coherence and interference (QCI) is a phenomenon that takes place in all multi-level atomic systems interacting with multiple lasers. In this work QCI is used to create several interesting effects like lasing without inversion (LWI), controlling group velocity of light to extreme values, controlling the direction of propagation through non-linear phase matching condition and for controlling the correlations in field fluctuations. Controlling group velocity of light is very interesting because of many novel applications it can offer. One of the unsolved problems in this area is to achieve a slow and fast light which can be tuned continuously as a function of frequency. We describe a method for creation of tunable slow and fast light by controlling intensity of incident laser fields using QCI effects. Lasers are not new to the modern world but an extreme ultra-violet laser or a x-ray laser is definitely one of the most desirable technologies today. Using QCI, we describe a method to realize lasing at high frequencies by creating lasing without inversion. Role of QCI in creating correlations and anti-correlations, which are generated by vacuum fluctuations, in a three level lambda system coupled to two strong fields is discussed. digital.library.unt.edu/ark:/67531/metadc500094/
Ethnogenesis and Captivity: Structuring Transatlantic Difference in the Early Republic, 1776-1823
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This study seeks to understand the development of early American ideas of race, religion, and gender as reflected in Indian and Barbary captivity narratives (tales of individuals taken captive by privateers in North Africa) and in plays that take American captives as their subject. Writers of both Indian and Barbary captivity narratives used racial and religious language – references to Indians and North Africans as demonic, physically monstrous, and animal – simultaneously to delineate Native American and North African otherness. The narrative writers reserved particular scorn for the figure of the Renegade – the willful cultural convert who chose to live among the Native Americans or adopt Islam and live among his North African captors. The narratives, too, reflect Early American gendered norms by defining the role of men as heads of household and women’s protectors, and by defining women by their status as dutiful wives and mothers. Furthermore, the narratives carefully treat the figure of the female captive with particular care – resisting implications of captive rape, even while describing graphic scenes of physical torture, and denying the possibility of willful transcultural sexual relationships. digital.library.unt.edu/ark:/67531/metadc500029/
Targeted and Metal-loaded Polymeric Nanoparticles As Potential Cancer Therapeutics
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Polymeric nanoparticles were designed, synthesized, and loaded with metal ions to explore the therapeutic potential for transition metals other than platinum found in cisplatin. Nanoparticles were synthesized to show the potential for polymer based vectors. Metal loading and release were characterized via Inductively Coupled Plasma Mass Spectrometry (ICP MS), Energy Dispersive X-Ray Spectroscopy (EDX), X-Ray Photoelectron Spectroscopy (XPS), and Elemental Analysis. Targeting was attempted with the expectation of observed increased particle uptake by cancer cells with flow cytometry and fluorescence microscopy. Results demonstrated that a variety of metals could be loaded to the nano-sized carriers in an aqueous environment, and that the release was pH-dependent. Expected increased targeting was inconsistent. The toxicity of these particles was measured in cancer cells where significant toxicity was observed in vitro via dosing of high copper-loaded nanoparticles and slight toxicity was observed in ruthenium-loaded nanoparticles. No significant toxicity was observed in cells dosed with metal-free nanoparticles. Future research will focus on ruthenium loaded polymeric nanoparticles with different targeting ligands dosed to different cell lines for the aim of increased uptake and decreased cancer cell viability. digital.library.unt.edu/ark:/67531/metadc500025/
“The Inevitable: Withdrawn”
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The Inevitable: Withdrawn is a critical preface and collection of non-fiction writing: personal essay, lyric essay, fragments, and experimental forms. The work’s cohesive subject matter is the author’s European vacation directly following her divorce. Within the pieces, the author attempts to reconcile who she is when starting over and she begins to ask questions regarding the human condition: How do I learn to exhibit intimacy again, not just with romantic partners, but with also in a familial way with my father, and how does absence in these relationships affect my journey and how I write about it? How do I view, and remake myself, when finding my identity that was tied to another individual compromised? How does a body, both physical and belonging to me, and physical as text, take certain shapes to reflect my understanding? How do I define truth, and how do I interpret truth and authenticity in both experience and writing? How do I define and know the difference between belief and truth? And finally, how does narrative and language protect, or expose me? The Inevitable: Withdrawn considers debates regarding the definition of narrative in order to address a spectrum of non-fiction writing. The collection takes into consideration non-fiction conventions, form as functionality, philosophy, linguistics, cognitive psychology, prose and poetic theory, and the works of other notable writers. digital.library.unt.edu/ark:/67531/metadc500048/
Assessing Social Determinants of Severe Mental Illness in High-risk Groups
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The primary objective of this research was to explore the impact of possible social factors on non-institutionalized adults 18 years of age or older residing in the United States who exhibited severe mental illness (SMI). A holistic sociological model was developed to explain SMI by incorporating elements of social learning theory, social disorganization theory, and gender socialization theory with social demographic factors. Based on the holistic sociological model, the following factors were investigated: demographic aspects of age, education, income and gender; gender socialization; influence of neighborhood area; social network influence based on communication and interaction among peers and family members; and socially deviant behaviors such as frequently smoking cigarettes, drinking alcohol and using drugs specifically marijuana. The impact of these factors on SMI was examined. A sample of 206 respondents drawn from National Survey on Drug Use and Health, 2003 was assessed. These respondents had answered all the questions related to SMI; social deviant behaviors; neighborhood environment; and communications among peers, family members and friends; and the other studied factors. Ordinary linear regression with interaction terms was employed as a statistical tool to assess the impact of social determinants on SMI. Being female, living a disorganized neighborhood, and frequent and high levels of smoking cigarettes and drinking alcohol had a significant influence on SMI. This reevaluation and reexamination of the role of gender socialization path, socially deviant behaviors like smoking and drinking, and community construction on SMI provided additional insights. This research is one of the first to develop a more holistic sociological model on SMI and explored the previously untested interactive relationships. The limitations of this study suggest the need to test a potential recursive research model and explore additional bi-directional associations. digital.library.unt.edu/ark:/67531/metadc500085/
Journal of Applied Rehabilitation Counseling, Volume 45, Number 4, Winter 2014
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Journal of Applied Rehabilitation Counseling is the official publication of the National Rehabilitation Counseling Association (NRCA). The JARC is published quarterly, Spring, Summer, Fall and Winter. JARC is a journal of opinion and research in professional rehabilitation counseling and addresses the needs of individuals employed in a wide variety of work settings and with wide-ranging professional interests. In the current special issue (Vol. 45, No.4) of JARC, which focused on the issues related to Ex-Offender Population and Employment, the following six articles were included: - Vulnerability and Marginalization of Adult Ex-Offenders with Disabilities in Community and Employment Reintegration (Debra A. Harley, Becky Cabe, Ralph Woolums, and Tyra Turner-Whittaker) - Engaging Employers and Business in the Hiring of Individuals with Criminal Records (J. Gordon Swensen, John Rakis, Melanie G. Snyder, and Randall E. Loss) - Disability, Race and Ex-Offender Status: The Tri-vector Challenge to Employment (Sonja Feist-Price, Lisa Lavergne, and Michelle Davis) - How Gender of Ex-Offenders Influences Access to Employment Opportunities (Rebecca L. Richardson and Shawn M. Flower) - Aging, Incarceration, and Employment Prospects: Recommendations for Practice and Policy Reform (Tina Maschi, Keith Morgen, Kimberly Westcott, Deborah Viola, and Lindsay Koskinen) - Ex-Offenders in Rural Settings Seeking Employment (Glacia Ethridge, Paige N. Dunlap, Quintin Boston, and Bridget H. Staten). digital.library.unt.edu/ark:/67531/metadc488198/
Journal of Applied Rehabilitation Counseling, Volume 45, Number 3, Fall 2014
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Journal of Applied Rehabilitation Counseling is the official publication of the National Rehabilitation Counseling Association (NRCA). The JARC is published quarterly, Spring, Summer, Fall and Winter. JARC is a journal of opinion and research in professional rehabilitation counseling and addresses the needs of individuals employed in a wide variety of work settings and with wide-ranging professional interests. In the current issue (Vol. 45, No.3) of JARC, the following four articles were included: - Animal-Assisted Therapy for Fetal Alcohol Spectrum Disorder (Brooke Vincent, Caley Kropp, and Andrew M. Byrne) - Adult Ex-Offender Population and Employment: A Synthesis of the Literature on Recommendations and Best Practices (Debra A. Harley) - Colorectal Cancer and Rehabilitation Counseling (Robert Hewes and Bernard J. Graney) - The Human Animal Bond: Applications for Rehabilitation Professionals (Denise Silcox, Yuleinys A. Castillo, and Bruce J. Reed). digital.library.unt.edu/ark:/67531/metadc463546/
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