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A Pedagogical Analysis of Articulation, Balancing, Voicing, and Interpretation in Giuseppe Concone's Vingt Études Chantantes, Op. 30, for Upper Intermediate Piano Students (open access)

A Pedagogical Analysis of Articulation, Balancing, Voicing, and Interpretation in Giuseppe Concone's Vingt Études Chantantes, Op. 30, for Upper Intermediate Piano Students

Giuseppe Concone's piano études number over a hundred, and are collected in seven various sets. They consist of pieces for elementary, intermediate, and advanced level pianists. A few of them have been printed in anthologies but most of them remain unknown. The present research consists of two parts: an overview of Concone's complete sets of piano études, and a detailed analysis of Op. 30, with a detailed focus on articulation, balancing, voicing, and interpretation. First is a brief overview of the Études Opp. 37, 46, 24, 25, 31 and 34. Then in the analysis of Op. 30, after explaining the salient features of this set of études, there is an illustration of the method by giving an analysis of each étude. Concone's Vingt Études Chantantes Op. 30 are a fine supplement of teaching repertoire for the intermediate piano students. The Op. 30 incorporates a diversity of technical requirements and musical merits that can help students transition from intermediate level to early-advanced level. They may also contribute to being aware of binary and ternary forms, and prepares students for learning other genres of the 19th century piano literature.
Date: December 2017
Creator: Cao, Chenyi
System: The UNT Digital Library
Nathanael Greene and the Myth of the Valiant Few (open access)

Nathanael Greene and the Myth of the Valiant Few

Nathan Greene is the Revolutionary Warfare general most associated with unconventional warfare. The historiography of the southern campaign of the revolution uniformly agrees he was a guerrilla leader. Best evidence shows, however, that Nathanael Greene was completely conventional -- that his strategy, operations, tactics, and logistics all strongly resembled that of Washington in the northern theater and of the British commanders against whom he fought in the south. By establishing that Greene was within the mainstream of eighteenth-century military science this dissertation also challenges the prevailing historiography of the American Revolution in general, especially its military aspects. The historiography overwhelmingly argues the myth of the valiant few -- the notion that a minority of colonists persuaded an apathetic majority to follow them in overthrowing the royal government, eking out an improbable victory. Broad and thorough research indicates the Patriot faction in the American Revolution was a clear majority not only throughout the colonies but in each individual colony. Far from the miraculous victory current historiography postulates, American independence was based on the most prosaic of principles -- manpower advantage.
Date: December 2017
Creator: Smith, David R.
System: The UNT Digital Library
Using a Text Mining Approach to Examine Online Learning Research Trends of the Past 20 Years (1997-2016) (open access)

Using a Text Mining Approach to Examine Online Learning Research Trends of the Past 20 Years (1997-2016)

The purpose of this research is to identify longitudinal trends relevant to online learning research within 15 highly regarded, peer-reviewed publications in educational technology and online education. Online instruction has become a popular form of education delivery across academic institutions. A review of literature on the topic shows that missing from the corpus is a trend analysis focused in online learning research across multiple journals. Previous efforts of establishing trends in online learning are narrow in focus using only one journal or a shortened time frame. This metatrend analysis employed text mining techniques to examine twenty years (1997-2016) of published research in an effort to establish past, present and emerging trends within published literature. A general bibliometric analysis is offered highlighting prolific and yearly journal publications. Meaningful trending terms used during the twenty-year time period were identified and analyzed. A cluster analysis performed on the extracted data provides a single layer taxonomy regarding online learning research. Time trends within the clusters were identified to offer a more in-depth analysis. Trends revealed during the research indicate a changing relationship of online learning and distance education. A strong emphasis on students and learning was noted as a consistent trend throughout the literature. …
Date: December 2017
Creator: Keahey, Heather Lynn
System: The UNT Digital Library
Service Honest and Faithful: The Thirty-Third Volunteer Infantry Regiment in the Philippine War, 1899-1901 (open access)

Service Honest and Faithful: The Thirty-Third Volunteer Infantry Regiment in the Philippine War, 1899-1901

This manuscript is a study of the Thirty-Third Infantry, United States Volunteers, a regiment that was recruited in Texas, the South, and the Midwest and was trained by officers experienced from the Indian Wars and the Spanish-American War. This regiment served as a front-line infantry unit and then as a constabulary force during the Philippine War from 1899 until 1901. While famous in the United States as a highly effective infantry regiment during the Philippine War, the unit's fame and the lessons that it offered American war planners faded in time and were overlooked in favor of conventional fighting. In addition, the experiences of the men of the regiment belie the argument that the Philippine War was a brutal and racist imperial conflict akin to later interventions such as the Vietnam War. An examination of the Thirty-Third Infantry thus provides valuable context into a war not often studied in the United States and serves as a successful example of a counterinsurgency.
Date: December 2017
Creator: Andersen, Jack David
System: The UNT Digital Library
Exposing the Spectacular Body: The Wheel, Hanging, Impaling, Placarding, and Crucifixion in the Ancient World (open access)

Exposing the Spectacular Body: The Wheel, Hanging, Impaling, Placarding, and Crucifixion in the Ancient World

This dissertation brings the Ancient Near Eastern practice of the wheel, hanging, impaling, placarding, and crucifixion (WHIPC) into the scholarship of crucifixion, which has been too dominated by the Greek and Roman practice. WHIPC can be defined as the exposure of a body via affixing, by any means, to a structure, wooden or otherwise, for public display (Chapter 2). Linguistic analysis of relevant sources in several languages (including Egyptian hieroglyphics, Sumerian, Hebrew, Hittite, Old Persian, all phases of ancient Greek, and Latin) shows that because of imprecise terminology, any realistic definition of WHIPC must be broad (Chapter 3). Using methodologies and interdisciplinary approaches drawn from art history, archaeology, linguistic analysis, and digital humanities, this work analyzes scattered but abundant evidence to piece together theories about who was crucified, when, how, where, and why. The dissertation proves that WHIPC records, written and visual, were kept for three primary functions: to advertise power, to punish and deter, and to perform magical rituals or fulfill religious obligations. Manifestations of these three functions come through WHIPC in mythology (see especially Chapter 4), trophies (Chapter 5), spectacles, propaganda, political commentary, executions, corrective torture, behavior modification or prevention, donative sacrifices, scapegoat offerings, curses, and healing rituals. …
Date: December 2017
Creator: Foust, Kristan Ewin
System: The UNT Digital Library
Educational Technology: A Comparison of Ten Academic Journals and the New Media Consortium Horizon Reports for the Period of 2000-2017 (open access)

Educational Technology: A Comparison of Ten Academic Journals and the New Media Consortium Horizon Reports for the Period of 2000-2017

This exploratory and descriptive study provides an increased understanding of the topics being explored in both published research and industry reporting in the field of educational technology. Although literature in the field is plentiful, the task of synthesizing the information for practical use is a massive undertaking. Latent semantic analysis was used to review journal abstracts from ten highly respected journals and the New Media Consortium Horizon Reports to identify trends within the publications. As part of the analysis, 25 topics and technologies were identified in the combined corpus of academic journals and Horizon Reports. The journals tended to focus on pedagogical issues whereas the Horizon Reports tended to focus on technological aspects in education. In addition to differences between publication types, trends over time are also described. Findings may assist researchers, practitioners, administrators, and policy makers with decision-making in their respective educational areas.
Date: December 2017
Creator: Morel, Gwendolyn
System: The UNT Digital Library
Academic and Social Functioning of College Students with Attention-Deficit/Hyperactivity Disorder (ADHD) (open access)

Academic and Social Functioning of College Students with Attention-Deficit/Hyperactivity Disorder (ADHD)

Attention-deficit/hyperactivity disorder (ADHD) is a complicated psychiatric disorder that is typically first diagnosed in childhood and associated with negative outcomes in adulthood such as poor academic performance and difficulties with social relationships. ADHD can be difficult to accurately diagnose in adulthood, given the absence of clear, agreed upon ADHD symptomology in adults. In the current study, two raters used psychometrically sound instruments and diagnostically valid assessment techniques on an archival dataset to create three distinct groups: ADHD [2/3 with other mental health diagnosis (OMH)], OMH only, and no diagnosis. Findings support the value of comprehensive assessment, combined with a thorough evaluation of the material by a trained clinician, for the accurate diagnosis of ADHD for research purposes. Comparisons were made across groups to infer that college students with ADHD have lower grade point averages and academic self-concept than students without mental health diagnoses. Yet, contrary to much of the current literature, college students with ADHD seem to create as strong, deep, supportive and harmonious relationships with loved ones and close friends as their non-diagnosed peers. Clinicians working with college students with ADHD may use the results of the current study to better inform conceptualization, better recognize the innate resilience college …
Date: December 2017
Creator: Calmenson, Nina
System: The UNT Digital Library
Ethnic and Sexual Minority Differences in the Prediction of Disordered Eating and Exercise Behaviors in College Men (open access)

Ethnic and Sexual Minority Differences in the Prediction of Disordered Eating and Exercise Behaviors in College Men

Despite growing evidence of their prevalence, clinical and subclinical disordered eating behaviors among men continue to be understudied phenomena. When compared to females, predictors of male disordered eating vary across ethnic groups, suggesting cultural influences on disordered eating. Moreover, gay and bisexual men experience pronounced levels of body dissatisfaction, sensitivity to societal body image standards, and subsequent disordered eating when compared to straight men and gay women. This study investigated possible differences in prediction of disordered eating among intersections of male ethnicity and sexuality. We approached this question through a transtheoretical lens that integrated intersectionality and minority stress theories. Archival data from a sample of African American, Latino, and White college men were analyzed using hierarchical multiple regression. Predictors of emotional and binge eating behaviors differed across ethnicity, in that body dissatisfaction and media internalization for African American and Latino males exhibit the strongest unique associations with emotional and binge eating behaviors, while the strongest unique predictors of emotional and binge eating behaviors among White males are depressive symptoms and low self-esteem. Moreover, African American sexual identity and depressive symptoms interact, as gay or bisexual men report stronger unique associations between depression symptoms and emotional and binge eating. All predictors …
Date: December 2017
Creator: Pereira, Andrew
System: The UNT Digital Library
Solo Violin in Gustav Mahler's Symphonic Works as a Musical Sign (open access)

Solo Violin in Gustav Mahler's Symphonic Works as a Musical Sign

Noted for both vocal and symphonic output, Gustav Mahler's musical sophistication constantly puzzled scholars in the past decades. In his symphonic works, the mixed forms and styles in combination with the vocal influence make it abstruse for listeners to detect the meaning of the use of traditional instruments. The solo violin, which has an extensive history of appearing in symphonic compositions since the Baroque era, is an instance of a traditional instrument given an unusual function. For instance, Mahler's violin solos do not tend to showcase the virtuosity of the instrument as they normally do in orchestral music. In order to closely examine the role of the solo violin, I rely on aspects relating to introversive semiosis such as harmonies, rhythms, textures, phrase structures, and forms; then my focus shifts to extroversive semiosis, specifically to topics and contextual factors. By considering the violin as a musical sign, listeners can comprehend the instrument's structure, syntax, and ultimately the complex logic of Mahler's musical discourse.
Date: December 2017
Creator: Yang, Chaul
System: The UNT Digital Library
Design of Bioinspired Conductive Smart Textile (open access)

Design of Bioinspired Conductive Smart Textile

Electrically conductive fabrics are one of the major components of smart textile that attracts a lot of attention by the energy, medical, sports and military industry. The principal contributors to the conductivity of the smart textiles are the intrinsic properties of the fiber, functionalization by the addition of conductive particles and the architecture of fibers. In this study, intrinsic properties of non-woven carbon fabric derived from a novel linear lignin, poly-(caffeyl alcohol) (PCFA) discovered in the seeds of the vanilla orchid (Vanilla planifolia) was investigated. In contrast to all known lignins which comprise of polyaromatic networks, the PCFA lignin is a linear polymer. The non-woven fabric was prepared using electrospinning technique, which follows by stabilization and carbonization steps. Results from Raman spectroscopy indicate higher graphitic structure for PCFA carbon as compared to the Kraft lignin, as seen from G/D ratios of 1.92 vs 1.15 which was supported by a high percentage of graphitic (C-C) bond observed from X-ray photoelectron spectroscopy (XPS). Moreover, from the XRD and TEM a larger crystal size (Lc=12.2 nm) for the PCFA fiber was obtained which correlates to the higher modulus and conductivity of the fiber. These plant-sourced carbon fabrics have a valuable impact on zero …
Date: August 2017
Creator: Rizvi, Syed Hussain Raza
System: The UNT Digital Library
Corporeal Judgment in Shakespeare's Plays (open access)

Corporeal Judgment in Shakespeare's Plays

In this dissertation, I examine the complex role that the body played in early modern constructions of judgment. Moving away from an overreliance on anti-theatrical texts as the authority on the body in Shakespeare's plays, my project intervenes in the field Shakespearean studies by widening the lens through which scholars view the body's role in the early modern theater. Through readings of four plays—Richard II, Hamlet, King Lear, and The Winter's Tale—I demonstrate that Shakespeare uses a wide range of ideas about the human body from religious, philosophical, medical, and cultural spheres of thought to challenge Puritan accusations that the public theater audience is incapable of rational judgment. The first chapter outlines the parameters of the project. In Chapter 2, I argue that Richard II draws parallels between the theatrical community and the community created through the sacramental experiences of baptism and communion to show that bodies play a crucial role in establishing common experience and providing an avenue for judgment. In Chapter 3, I argue that Shakespeare establishes correspondences between bodily and social collaboration to show how both are needed for the memory-making project of the theater. In the next chapter, I show how Shakespeare appropriates what early moderns …
Date: December 2017
Creator: Cephus, Heidi Nicole
System: The UNT Digital Library
Attachment, Coping, and Psychiatric Symptoms among Military Veterans and Active Duty Personnel: A Path Analysis Study (open access)

Attachment, Coping, and Psychiatric Symptoms among Military Veterans and Active Duty Personnel: A Path Analysis Study

The purpose of this study was to examine the role of attachment processes and coping strategies in the development of psychiatric symptoms among military veterans and active duty personnel. Data were obtained from 268 male and female military veterans and active duty personnel. A path analysis was conducted to estimate the relationships between attachment processes, coping strategies, and psychiatric symptoms. Findings demonstrated that greater levels of attachment anxiety were related to increased levels of avoidant coping and psychiatric symptoms, while higher levels of attachment avoidance were related to avoidant coping and PTSD symptoms, as well as decreased levels of problem-focused coping. Alcohol use was associated with psychiatric symptoms. Avoidant coping, but not problem-focused coping, was associated with psychiatric symptoms and partially mediated the relationship between anxious attachment and psychiatric symptoms. Avoidant coping also fully or partially mediated the relationships of avoidant attachment to depression and PTSD symptoms. The findings of this study increase our knowledge of mechanisms that contribute to psychiatric symptoms among military populations, which in turn can guide treatment planning and interventions.
Date: December 2017
Creator: Romero, Daniel Hugo
System: The UNT Digital Library
Effects of Disasters on Local Climate Actions: Climate Change Mitigation and Adaptation Actions (open access)

Effects of Disasters on Local Climate Actions: Climate Change Mitigation and Adaptation Actions

This dissertation investigates the effects of natural disasters and political institutions on municipalities' climate change policies. Although most theoretical frameworks on policy adoption highlight the roles of extreme events as exogenous factors influencing policy change, most studies tend to focus on the effects of extreme events on policy change at the national level. Additionally, the existing theoretical frameworks explaining local policy adoption and public service provision do not pay attention to the roles of extreme events in local governments' policy choices. To fill those gaps, this dissertation explores the roles of natural disasters and political institutions on municipal governments' climate change policies. It does this by applying the theory of focusing events to local climate mitigation and adaptation actions. Based on the policy change framework, the political market model, and the institutional collective action frameworks, this dissertation develops and tests hypotheses to examine the effects of natural disasters and political institutions on municipalities' climate mitigation and adaptation policies. The dissertation uses 2010 National League of Cities (NLC) sustainability surveys and the 2010 International City/County Management Association (ICMA) sustainability survey to test the hypotheses. Analytical results show that floods and droughts influence local climate change policies and suggest that local governments …
Date: December 2017
Creator: Kim, Kyungwoo
System: The UNT Digital Library
"Failure to Yield": Essays (open access)

"Failure to Yield": Essays

Failure to Yield is a collection of creative nonfiction that explores themes of presence and emotional connection and expression. The seven essays, which include three flash essays, explore the themes by reflecting on such topics as marriage, parent-child relationships and addiction. The collection is woven together by the author's relationships with her parents and children and by her experiences growing up in a small town in Iowa.
Date: December 2017
Creator: Siegfried, Cary Ann
System: The UNT Digital Library
Molecular Dynamics Simulations of the Structure and Properties of Boron Containing Oxide Glasses: Empirical Potential Development and Applications (open access)

Molecular Dynamics Simulations of the Structure and Properties of Boron Containing Oxide Glasses: Empirical Potential Development and Applications

Potential parameters that can handle multi-component oxide glass systems especially boron oxide are very limited in literature. One of the main goals of my dissertation is to develop empirical potentials to simulate multi-component oxide glass systems with boron oxide. Two approaches, both by introducing the composition dependent parameter feature, were taken and both led to successful potentials for boron containing glass systems after extensive testing and fitting. Both potential sets can produce reasonable glass structures of the multi-component oxide glass systems, with structure and properties in good agreement with experimental data. Furthermore, we have tested the simulation settings such as system size and cooling rate effects on the results of structures and properties of MD simulated borosilicate glasses. It was found that increase four-coordinated boron with decreasing cooling rate and system size above 1000 atoms is necessary to produce converged structure. Another application of the potentials is to simulate a six-component nuclear waste glass, international simple glass (ISG), which was for first time simulated using the newly developed parameters. Structural features obtained from simulations agree well with the experimental results. In addition, two series of sodium borosilicate and boroaluminosilicate glasses were simulated with the two sets of potentials to compare …
Date: December 2017
Creator: Deng, Lu
System: The UNT Digital Library
Exploring the Relationship between Strategic Thinking and Absorptive Capacity: A Proposed Typology (open access)

Exploring the Relationship between Strategic Thinking and Absorptive Capacity: A Proposed Typology

Absorptive capacity plays an important role in the organizational adaptation process. Prior research on absorptive capacity focuses on its role in organizational outcomes such as financial performance, innovation, new product development, etc. Recently, scholars have called for research on factors that influence absorptive capacity. Because absorptive capacity plays a vital role in achieving organizational outcomes, it behooves us to improve our understanding of absorptive capacity and its antecedents to serve both researchers and practitioners. In this investigation, strategic thinking is posited to be a key antecedent of absorptive capacity. Capability theory suggests that strategic thinking is a metaphysical (higher order) capability that influences an organization's absorptive capacity. Combining this argument with Miles and Snow's typology of organizational adaptation process, it is posited that the relationship between strategic thinking and absorptive capacity can be clustered into different "groups." Prospectors, defenders, and analyzers, characterized in Miles and Snow's typology of firms are viewed as distinctive groups that exhibit different relationships between strategic thinking and absorptive capacity. Results from an empirical examination suggest that strategic thinking is positively related to absorptive capacity. The results also suggest that the relationship between these two constructs is different between these groups and that the strategic thinking …
Date: December 2017
Creator: Srivastava, Saurabh
System: The UNT Digital Library
Idiographic Temporal Dynamics of Posttraumatic Stress Disorder (PTSD) Symptom Dimensions in Daily Life (open access)

Idiographic Temporal Dynamics of Posttraumatic Stress Disorder (PTSD) Symptom Dimensions in Daily Life

Understanding temporal relations among posttraumatic stress disorder (PTSD) symptom dimensions has received increasing attention in research. However, current findings in this area are limited by group-level approaches, which are based on inter-individual variation. PTSD is a heterogeneous syndrome and symptoms are likely to vary across individuals and time. Thus, it is important to examine temporal relations among PTSD symptom dimensions as dynamic processes and at the level of intra-individual variation. The aim of the present study was to capture temporal dynamics among PTSD symptom dimensions at an individual level using unified structural equation modeling (uSEM). World Trade Center (WTC) 9/11 responders (N = 202) oversampled for current PTSD (18.3% met criteria in past month) were recruited from the Long Island site of the WTC health program. Using ecological momentary assessment (EMA), PTSD symptoms were assessed three times a day over seven consecutive days. The person-specific temporal relations among PTSD symptom dimensions were estimated with individual-level uSEM. For the sample as a whole, hyperarousal played a key role in driving the other three symptom dimensions longitudinally, with the strongest effect in intrusive symptoms. However, daily temporal relations among PTSD symptoms were idiosyncratic. Although hyperarousal was a strong predictor of subsequent symptom …
Date: December 2017
Creator: Schuler, Keke
System: The UNT Digital Library
Simulink® Based Design and Implementation of Wireless Sensor Networks (open access)

Simulink® Based Design and Implementation of Wireless Sensor Networks

A wireless sensor network (WSN) is a spatially distributed network used to monitor the physical and environmental conditions such as temperature, pressure, sound, humidity, heat, etc. WSNs can be modeled using different simulation frameworks like OMNeT++, Prowler, Atarraya, PiccSIM, Network Simulator, etc. In this research, Simulink framework was used to model WSN system. The complete WSN consisting of transmitting nodes, communication channel, and receiver nodes are built in the Simulink framework. Orthogonal frequency division multiplexing technique was used to transmit the information. The implemented wireless sensor system behavior is studied using temperature as the measurement parameter at different values of signal to noise ratio. The plots of bit error rate versus signal to noise ratio and frame error rate versus signal to noise ratio are generated in the Simulink framework. It is easy to study the effect of different physical layer parameters on the performance of wireless sensor networks by implementing WSN in the Simulink framework.
Date: December 2017
Creator: Nune, Raju
System: The UNT Digital Library
Three-Dimensional Carbon Nanostructure and Molybdenum Disulfide (MoS2) for High Performance Electrochemical Energy Storage Devices (open access)

Three-Dimensional Carbon Nanostructure and Molybdenum Disulfide (MoS2) for High Performance Electrochemical Energy Storage Devices

My work presents a novel approach to fabricate binder free three-dimensional carbon nanotubes/sulfur (3DCNTs/S) hybrid composite by a facile and scalable method increasing the loading amount from 1.86 to 8.33 mg/cm2 highest reported to date with excellent electrochemical performance exhibiting maximum specific energy of ~1233Wh/kg and specific power of ~476W/kg, with respect to the mass of the cathode. Such an excellent performance is attributed to the fact that 3DCNTs offers higher loading amount of sulfur, and confine polysulfide within the structure. In second part of the thesis, molybdenum disulfide (MoS2) is typically studied for three electrochemical energy storage devices including supercapacitors, Li-ion batteries, and hybrid Li-ion capacitors. The intrinsic sheet like morphology of MoS2 provides high surface area for double layer charge storage and a layered structure for efficient intercalation of H+/ Li+ ions. My work demonstrates the electrochemical analysis of MoS2 grown on different substrates including copper (conducting), and carbon nanotubes. MoS2 film on copper was investigated as a supercapacitor electrode in three electrode system exhibiting excellent volumetric capacitance of ~330F/cm3 along with high volumetric power and energy density in the range of 40-80 W/cm3 and 1.6-2.4 mWh/cm3, respectively. Furthermore, we have developed novel binder-free 3DCNTs/ MoS2 as an …
Date: December 2017
Creator: Patel, Mumukshu D.
System: The UNT Digital Library
A Study of Selected Compositional Techniques Found in Young Ja Lee's Variations Pour Piano "Umma ya, Nuna ya" (1996) (open access)

A Study of Selected Compositional Techniques Found in Young Ja Lee's Variations Pour Piano "Umma ya, Nuna ya" (1996)

Young Ja Lee (b. 1931) is regarded as one of the most important living female composers in Korea. She leads and contributes to the Korean classical music society as a gifted composer and a dedicated educator. This study focuses on how she has combined Western compositional techniques with elements of Eastern traditional music in some of her compositions, in particular, her Variations pour piano "Umma ya, Nuna ya." An interpretation of her Variations pour piano "Umma ya, Nuna ya" reveals that the composition features many of the particular and sublime aspects of Western compositional techniques in conjunction with traditional Korean music style. This study is an investigation of the interaction and assimilation of these disparate elements. The results of this study may inspire further research into traditional Korean music and bring recognition to important Korean composers, as well as encourage music educators to teach Korean composers' compositions.
Date: December 2017
Creator: Shin, Eun Young
System: The UNT Digital Library
Estimating Thermal Conductivity and Volumetric Specific Heat of a Functionally Graded Material using Photothermal Radiometry (open access)

Estimating Thermal Conductivity and Volumetric Specific Heat of a Functionally Graded Material using Photothermal Radiometry

Functionally graded materials (FGMs) are inhomogeneous materials in which the material properties vary with respect to space. Research has been done by scientific community in developing techniques like photothermal radiometry (PTR) to measure the thermal conductivity and volumetric heat capacity of FGMs. One of the problems involved in the technique is to solve the inverse problem, i.e., estimating the thermal properties after the frequency scan has been obtained. The present work involves finding the unknown thermal conductivity and volumetric heat capacity of the FGMs by using finite volume method. By taking the flux entering the sample as periodic and solving the discretized 1-D thermal wave field equation at a frequency domain, one can obtain the complex temperatures at the surface of the sample for each frequency. These complex temperatures when solved for a range of frequencies gives the phase vs frequency scan which can then be compared to original frequency scan obtained from the PTR experiment by using a residual function. Brute force and gradient descent optimization methods have been implemented to estimate the unknown thermal conductivity and volumetric specific heat of the FGMs through minimization of the residual function. In general, the spatial composition profile of the FGMs can …
Date: December 2017
Creator: Koppanooru, Sampat Kumar Reddy
System: The UNT Digital Library
Phenotypic Analysis of Medicago truncatula NPF1.7 Over-Expressing Plants Grown under Different Nitrate Conditions (open access)

Phenotypic Analysis of Medicago truncatula NPF1.7 Over-Expressing Plants Grown under Different Nitrate Conditions

Plants have many nitrate transporters; in the model legume Medicago truncatula, MtNPF1.7 is among them. MtNPF1.7 is important for M. truncatula growth and it has been established that MtNPF1.7 is a high affinity nitrate transporter. M. truncatula plants with mutations in MtNPF1.7 gene show defects during plants growth, with striking abnormalities in nodule development and root architecture. Nitrogen fixation is an energy expensive process; when legumes have sufficient bioavailable nitrogen like nitrate available, it suppresses nodulation and nitrogen fixation. Previous preliminary results in our lab showed that plants constitutively expressing MtNPF1.7 have a growth phenotype in the absence of nitrate, but no data was available on how M. truncatula plants constitutively expressing MtNPF1.7 are affected by the presence of nitrate. For my research, I confirmed the preliminary results on the growth of M. truncatula plants overexpressing NPF1.7 and examined these plants' phenotypes when nitrate was not provided in the growth media and when it was provided at two different concentrations. Compared with wild type A17, plants constitutively expressing MtNPF1.7 gene grow larger, have more lateral roots and more nodules when grown in the absence of nitrate and when 0.2 mM KNO3 was provided. At 1 mM KNO3, there are fewer …
Date: December 2017
Creator: Cai, Jingya
System: The UNT Digital Library
Employee Satisfaction with Supervisor Support: The Case of Direct Care Workers in Nursing Homes (open access)

Employee Satisfaction with Supervisor Support: The Case of Direct Care Workers in Nursing Homes

The nursing home industry has been saturated for decades with culture change initiatives in an effort to improve resident quality of care. The direct care worker (DCW) is considered a critical position to achieving nursing facility quality improvements. Understanding what leads to job satisfaction for DCWs could result in improved resident care. The relationship DCWs have with their direct supervisor or upper-level manager can impact employee satisfaction. The purpose of this research is to identify factors that are associated with DCWs satisfaction with supervisor and management support. Data was obtained from 307 DCWs who were employed at 11 North Texas nursing homes. It was expected that factors affecting satisfaction with direct supervision and upper-level management would differ. In fact, the study found that the antecedents for employee satisfaction with supervisor support were participative decision-making/empowerment, age, information exchange and feedback. Furthermore, participative decision-making/empowerment, perceived competence, staffing, information exchange and feedback were found to affect direct care workers' satisfaction with manager support. In conclusion, this research provides a starting point towards a more holistic view of employee satisfaction with supervisor support by considering the preceding factors and its subsequent effects.
Date: December 2017
Creator: Whitaker, Lisa
System: The UNT Digital Library
The Hybrid Hero in Early Modern English Literature: A Synthesis of Classical and Contemplative Heroism (open access)

The Hybrid Hero in Early Modern English Literature: A Synthesis of Classical and Contemplative Heroism

In his Book of the Courtier, Castiglione appeals to the Renaissance notion of self-fashioning, the idea that individuals could shape their identity rather than relying solely on the influence of external factors such as birth, social class, or fate. While other early modern authors explore the practice of self-fashioning—Niccolò Machiavelli, for example, surveys numerous princes identifying ways they have molded themselves—Castiglione emphasizes the necessity of modeling one's-self after a variety of sources, "[taking] various qualities now from one man and now from another." In this way, Castiglione advocates for a self-fashioning grounded in a discriminating kind of synthesis, the generation of a new ideal form through the selective combination of various source materials. While Castiglione focuses on the moves necessary for an individual to fashion himself through this act of discriminatory mimesis, his views can explain the ways authors of the period use source material in the process of textual production. As poets and playwrights fashioned their texts, they did so by consciously combining various source materials in order to create not individuals, as Castiglione suggests, but characters to represent new cultural ideals and values. Early moderns viewed the process of textual, as well as cultural production, as a kind …
Date: December 2017
Creator: Ponce, Timothy Matthew
System: The UNT Digital Library