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Development and Evaluation of a Large-scale Pyramidal Staff Training Program for Behavior Management
Training and empirically evaluating caregivers’ implementation of behavior management skills is a particularly challenging task in large residential contexts. A pyramidal training approach provides an efficient and effective way to conduct large-scale competency-based behavior skills training. The purpose of this project was to develop and evaluate a large-scale pyramidal staff training program for behavior management skills. One hundred nine caregivers and 11 behavior service professionals at a large, residential care facility participated in this project. Interobserver agreement was utilized to develop and refine measurements systems to detect caregiver acquisition of skills, behavior service professionals’ ability to score caregiver performance and behavior service professionals’ ability to deliver a specified portion of the curriculum. Pre- and post-test probes were conducted utilizing standard role play scenarios and checklists to evaluate caregiver acquisition of three specific behavior management skills. The results supported the following conclusions: first, interobserver agreement measures were useful to develop a reliable measurement system, to refine some curriculum elements, and to evaluate measurement conducted by behavior service professionals. Second, behavior skills training (BST) resulted in caregiver acquisition of all three behavior management techniques. Third, the pyramidal training approach was effective to teach behavior service professionals to deliver BST and accurately measure the performances of trainees. digital.library.unt.edu/ark:/67531/metadc700014/
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/
Under the Influence of Marc Blitzstein: Examining Leonard J Lehrman’s Uses of Serial Techniques for Dramatic Purposes in Karla
American composer, author and conductor Leonard J. Lehrman (b. 1949) has spent a majority of his lifetime devoted to the scholarship on the music of Marc Blitzstein (1905-1964). Lehrman completed Blitzstein’s Idiots First in 1973, and finished his own one-act opera Karla in 1974. In an effort to honor Blitzstein, Lehrman included Karla along with Idiots First to begin the set of one-act operas to be titled Tales of Malamud. Lehrman coined the term “selective serialism” in reference to Blitzstein’s use of serial techniques representing something associated with death or something diabolical. Lehrman applies a similar technique in that he uses serialism to reference the presence of a handwritten notes that are tied to the dramatic context of the opera. This study examines Lehrman's use of serialism in Karla as it was directly influenced by Blitzstein’s use of serialism in Idiots First. digital.library.unt.edu/ark:/67531/metadc700028/
Developing a Forest Gap Model to Be Applied to a Watershed-scaled Landscape in the Cross Timbers Ecoregion Using a Topographic Wetness Index
A method was developed for extending a fine-scaled forest gap model to a watershed-scaled landscape, using the Eastern Cross Timbers ecoregion as a case study for the method. A topographic wetness index calculated from digital elevation data was used as a measure of hydrologic across the modeled landscape, and the gap model modified to have with a topographically-based hydrologic input parameter. The model was parameterized by terrain type units that were defined using combinations of USDA soil series and classes of the topographic wetness index. A number of issues regarding the sources, grid resolutions, and processing methods of the digital elevation data are addressed in this application of the topographic wetness index. Three different grid sizes, 5, 10, and 29 meter, from both LiDAR-derived and contour-derived elevation grids were used, and the grids were processed using both single-directional flow algorithm and bi-directional flow algorithm. The result of these different grids were compared and analyzed in context of their application in defining terrain types for the forest gap model. Refinements were made in the timescale of gap model’s weather model, converting it into a daily weather generator, in order to incorporate the effects of the new topographic/hydrologic input parameter. The precipitation model was converted to use a Markov model to initiate a sequence of wet and dry days for each month, and then daily precipitation amounts were determined using a gamma distribution. The output of the new precipitation model was analyzed and compared with a 100-year history of daily weather records at daily, monthly, and annual timescales. Model assumptions and requirements for biological parameters were thoroughly investigated and questioned. Often these biological parameters are based on little more than assumptions and intuition. An effort to base as many of the model’s biological parameters on measured data was made, including a new technique for estimating optimal volumetric growth rate by measuring tree rings. The gap model was set up to simulate various terrain types within the landscape. digital.library.unt.edu/ark:/67531/metadc700050/
Computational Studies on Structures and Ionic Diffusion of Bioactive Glasses
Bioactive glasses are a class of synthetic inorganic material that have wide orthopedics, dentistry, tissue engineering and other biomedical applications. The origin of the bioactivity is closely related to the atomic structures of these novel glass materials, which otherwise lack long range order and defies any direct experimental measurements due to their amorphous nature. The structure of bioactive glasses is thus essential for the understanding of bioactive behaviors and eventually rational design of glass compositions. In this dissertation, molecular dynamics (MD) and reverse monte carlo (RMC) based computer simulations have been used to systematically study the atomic structure of three classes of new bioactive glasses: strontium doped 45S5 Bioglass®, ZnO-SrO containing bioactive glasses, and Cao-MgO-P2O5-SiO2 bioactive glasses. Properties such as ionic diffusion that are important to glass dissolution behaviors are also examined as a function of glass compositions. The accuracy of structure model generated by simulation was validated by comparing with various experimental measurements including X-ray/neutron diffraction, NMR and Raman spectroscopy. It is shown in this dissertation that atomistic computer simulations, when integrated with structural and property characterizations, is an effective tool in understanding the structural origin of bioactivity and other properties of amorphous bioactive materials that can lead to design of novel materials for biomedical applications. digital.library.unt.edu/ark:/67531/metadc700054/
Modeling Epidemics on Structured Populations: Effects of Socio-demographic Characteristics and Immune Response Quality
Epidemiologists engage in the study of the distribution and determinants of health-related states or events in human populations. Eventually, they will apply that study to prevent and control problems and contingencies associated with the health of the population. Due to the spread of new pathogens and the emergence of new bio-terrorism threats, it has become imperative to develop new and expand existing techniques to equip public health providers with robust tools to predict and control health-related crises. In this dissertation, I explore the effects caused in the disease dynamics by the differences in individuals’ physiology and social/behavioral characteristics. Multiple computational and mathematical models were developed to quantify the effect of those factors on spatial and temporal variations of the disease epidemics. I developed statistical methods to measure the effects caused in the outbreak dynamics by the incorporation of heterogeneous demographics and social interactions to the individuals of the population. Specifically, I studied the relationship between demographics and the physiological characteristics of an individual when preparing for an infectious disease epidemic. digital.library.unt.edu/ark:/67531/metadc700011/
Analytical Model for Lateral Deflection in Cold-formed Steel Framed Shear Walls with Steel Sheathing
An analytical model for lateral deflection in cold-formed steel shear walls sheathed with steel is developed in this research. The model is based on the four factors: fastener displacement, steel sheet deformation, and hold-down deformation, which are from the effective strip concept and a complexity factor, which accounts for the additional influential factors not considered in the previous three terms. The model uses design equations based on the actual material and mechanical properties of the shear wall. Furthermore, the model accounts for aggressive and conservative designers by predicting deflection at different shear strength degrees. digital.library.unt.edu/ark:/67531/metadc700013/
Toward Sustainable Community: Assessing Progress at Dancing Rabbit Ecovillage
Dancing Rabbit Ecovillage, an intentional community of roughly 70 members in Northeastern Missouri, is working to create societal change through radical sustainable living practices and creation of a culture of eco-friendly and feminist norms. Members agree to abide by a set of ecological covenants and sustainability guidelines, committing to practices such as using only sustainably generated electricity, and no use or storage of personally owned vehicles on community property. Situated within the context of a sustainability study, this thesis explores how Dancing Rabbit is creating a more socially and ecologically just culture and how this lifestyle affects happiness and well-being. digital.library.unt.edu/ark:/67531/metadc700019/
Marianismo and Community College Persistence: a Secondary Data Analysis of the Educational Longitudinal Study 2002
Hispanics represent the greatest U.S. population growth, yet Hispanic women are the least educated of all U.S. ethnic female groups and reflect the lowest college enrollment as a percent of their total population. Since nearly half of Hispanics enrolled in college are served by community colleges, this research sought to understand if marianismo, i.e., the cultural expectations that Hispanic women females must focus on caretaking and mothering while reflecting passivity, duty and honor, and self-sacrifice, might provide some explanation for the low levels of degree attainment among Hispanic female community college students compared to their female peers from all other ethnic groups. Marianismo was once a construct that limited the role of women to the home. However, today’s Hispanic female is expected to juggle home priorities along with other roles in which she may engage. These various role demands may influence Hispanic female college persistence and success. Using secondary data analysis of the national Educational Longitudinal Study 2002 (ELS), this study examined the relationship between marianismo and persistence (semester to semester enrollment) of Hispanic females (n = 368) enrolled in community colleges. To create a marianismo scale, 13 items were selected from the ELS and reviewed by individuals familiar with Hispanic culture and marianismo. Confirmatory factor analysis was then used to generate a reliable marianismo scale (Cronbach’s alpha = .82). Logistic regression revealed that of marianismo, socio-economic status, generational status, and high school GPA, only high school GPA was statistically significant for predicting persistence. digital.library.unt.edu/ark:/67531/metadc700087/
Sitting Next to Bach: the Influence of Js Bach on Sven-david Sandström’s Bach Motet Project with a Focus on the Motets “Der Geist Hilft” and “Singet Dem Herrn”
In many of his choral works, Swedish composer Sven-David Sandström has sought a connection with the musical masters of the past. The number of Sandström works that bear a strong connection to Bach’s music is quite extensive and includes High Mass (1994), Magnificat (2005), the six motets (2003-2008) which constitute the Bach Motet Project under current discussion, and St. Matthew Passion, which recently premiered in Germany and Sweden in 2014. This study explores the extent to which Sven-David Sandström emulated the motets of J.S. Bach in the composition of his own motets. Further, this paper investigates these motets as a collection and examines two individual works within the collection as case studies for in-depth analysis. Ultimately, through analysis and discussion of the text, the division of text, the scoring of the motets, points of imitation, and specific compositional devices, the discussion explains how Sandström pays homage to Bach in the Motet Project primarily through the use of similar structural elements while maintaining his unique compositional voice to forge his own expressive path. digital.library.unt.edu/ark:/67531/metadc700027/
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/
Electrical Conduction Mechanisms in the Disordered Material System P-type Hydrogenated Amorphous Silicon
The electrical and optical properties of boron doped hydrogenated amorphous silicon thin films (a-Si) were investigated to determine the effect of boron and hydrogen incorporation on carrier transport. The a-Si thin films were grown by plasma enhanced chemical vapor deposition (PECVD) at various boron concentrations, hydrogen dilutions, and at differing growth temperatures. The temperature dependent conductivity generally follows the hopping conduction model. Above a critical temperature, the dominant conduction mechanism is Mott variable range hopping conductivity (M-VRH), where p = ¼, and the carrier hopping depends on energy. However, at lower temperatures, the coulomb interaction between charge carriers becomes important and Efros-Shklosvkii variable hopping (ES-VRH) conduction, where p=1/2, must be included to describe the total conductivity. To correlate changes in electrical conductivity to changes in the local crystalline order, the transverse optical (TO) and transverse acoustic (TA) modes of the Raman spectra were studied to relate changes in short- and mid-range order to the effects of growth temperature, boron, and hydrogen incorporation. With an increase of hydrogen and/or growth temperature, both short and mid-range order improve, whereas the addition of boron results in the degradation of short range order. It is seen that there is a direct correlation between the electrical conductivity and changes in the short and mid-range order resulting from the passivation of defects by hydrogen and the creation of trap states by boron. This work was done under the ARO grant W911NF-10-1-0410, William W. Clark Program Manager. The samples were provided by L-3 Communications. digital.library.unt.edu/ark:/67531/metadc700106/
Role Importance, Affectional Solidarity, and Depression Among Familial Caregivers for Older Adults
In the United States, familial caregivers provide approximately 80% of the long term elderly care and are at risk for mental health problems. As family members provide care, relationships shift from mutual support to increasing dependency on the caregivers, who in turn often experience a shift in self-concept from their prior relational role to include identification as caregiver for the care recipient. Affectional solidarity, or emotional relationship quality, can influence how caregivers experience their shifting role in relationship to a loved one. The study examined whether role importance is associated with caregiver depression over time, and tested the moderating role of affectional solidarity in this association. A subset of caregivers (N = 57) from the Longitudinal Study of Generations constituted the sample from which role importance, affectional solidarity, and Center for Epidemiological Studies Depression reports were analyzed using longitudinal hierarchical regression. Findings did not support hypotheses. Results suggested that affectional solidarity may be important to consider among familial caregivers as a potential protective factor for depression. Implications for future research and practitioners are discussed. digital.library.unt.edu/ark:/67531/metadc700104/
Personality and Mental Health Attitudes Among Us Army Rotc Cadets
With the current military mental health crisis, it is important to understand the role of the leader in military mental health. First, the impact of military leader behaviors on the well-being of military personnel is reviewed. Next, the role of leader attitudes as a precursor to leader behaviors is discussed. The relation of leader behaviors to leader personality using the NEO Five Factor Model (FFM) is reviewed, as well as the relation of prejudicial attitudes to the NEO FFM personality factors. A research project is described that attempted to draw these concepts together, assessing the NEO FFM personality dimensions and mental health attitudes of US Army ROTC cadets, the future leaders of the US Army. No significant relations were observed between NEO FFM personality traits and mental health attitudes, even after controlling for Impression Management. Also, the predicted positive correlation between positive mental health attitudes and Impression Management was not found. These results suggest that more research and more refined measures are needed in the area of leader attitudes toward soldier mental health problems, and how those attitudes might impact the soldiers. digital.library.unt.edu/ark:/67531/metadc700103/
Determinants of Outbound Cross-border Mergers and Acquisitions by Emerging Asian Acquirers
This dissertation identifies key determinants of outbound cross-border mergers and acquisitions (M&As) by emerging Asian acquirers during 2001-2012. Using a zero-inflated model that takes into account different mechanisms governing country pairs that never engage in cross-border M&As and country pairs that actively participate in cross-border M&As, I uncover unique patterns for emerging Asian acquirers. Emerging Asian acquirers originate from countries with lower corporate tax rates than those countries where their targets are located. Furthermore, the negative impact of an international double tax burden is significantly larger than that found in previous studies. While country governance differences and geographical and cultural differences are important determinants of international M&As, relative valuation effects are muted. Coefficients of these determinants vary substantially, depending on whether targets are located in developing or advanced nations. Also, determinants differ considerably between active and non-active players in cross-border M&As. Moreover, comparisons of empirical models illustrate that estimating a non-linear model and taking into account both the bounded nature and non-normal distributions of fractional response variables lead to different inferences from those drawn from a linear model estimated by the ordinary least squares method. Overall, emerging Asian acquirers approach the deals differently from patterns documented in developed markets. So, when evaluating foreign business combinations or devising policies, managers or policymakers should consider these differences. digital.library.unt.edu/ark:/67531/metadc700107/
The Relations Between Perceived Parent, Coach, and Peer Created Motivational Climates, Goal Orientations, and Mental Toughness in High School Varsity Athletes
Determining the factors that contribute to mental toughness development in athletes has become a focus for researchers as coaches, athletes, and others extol its influence on performance success. In this study we examined a model of mental toughness development based on achievement goal theory, assessing the relations between motivational climates, goal orientations, and mental toughness. Five hundred ninety-nine varsity athletes, representing 13 different sports from six different high schools in a southwestern United States school district, participated in the study. Athletes completed self-report measures assessing parent, peer, and coach motivational climates, goal orientations, and their mental toughness. Initially, I examined the measurement model and found it fit the data well both in the exploratory (SRMR = .06; CFI = .94) and confirmatory (SRMR = .06; CFI = .95) samples. Second, the structural model was examined and found to fit the data well in both the exploratory (SRMR = .08; CFI = .93) and confirmatory samples (SRMR = .07, CFI = .95). Parent task-involving climate, (β = .55; p < .05) and coach task-involving climate (β = .32; p < .05), but not peer task-involving climate (β = .05), were associated with task goal orientation (R2 = .57). Ego goal orientation (R2 = .32) was explained by peer ego-involving climate (β = .15; p < .05), parent ego-involving climate (β = .39; p < .05), and coach ego-involving climate (β = .16; p < .05). Finally, only task goal orientation (β = .75; p < .05) was related to the athletes’ mental toughness (R2 = .56); the ego goal orientation pathway was not significant (β = .04). These results speak to the potential positive influence of parents and coaches on athletes’ mental toughness through their endorsement of task-involving messages and pursuits leading to the development of a task goal orientation. digital.library.unt.edu/ark:/67531/metadc700098/
Reliability of Electronics
The purpose of this research is not to research new technology but how to improve existing technology and understand how the manufacturing process works. Reliability Engineering fall under the category of Quality Control and uses predictions through statistical measurements and life testing to figure out if a specific manufacturing technique will meet customer satisfaction. The research also answers choice of materials and choice of manufacturing process to provide a device that will not only meet but exceed customer demand. Reliability Engineering is one of the final testing phases of any new product development or redesign. digital.library.unt.edu/ark:/67531/metadc700024/
Teachers’ Perceptions of Their Responsibilities in Teaching Social Emotional Skills: a Case Study
This study investigated the beliefs of teachers at a particular elementary campus in North Texas during its first year of implementation of a social emotional curriculum regarding teaching social emotional skills and the influence of those beliefs on their classroom practices. The study drew from the works of Dewey and Bandura in the development of a framework for teacher decision making. A case study design incorporating multiple cases within the case study utilized a mixed-methods approach for data collection and analysis. Ten teachers volunteered and participated in the quantitative data collection, and four of those ten participated in the qualitative data collection through interviews and classroom observations. Data collection methods also included a demographic survey, a questionnaire on teacher beliefs about social emotional learning, and a self-ranking scale of practices related to teaching social emotional skills. Results indicated that although all participants believed social emotional skills instruction was part of their duties as teachers, their practices in teaching social emotional skills varied. Additionally, there was a mismatch between participants’ self-identified practices and the practices that were observed during the study. Administrative support for program implementation was high, but did not necessarily translate to effective practices during the first year of implementation of a particular program. While not significant in this study, variation in teacher characteristics may be important. digital.library.unt.edu/ark:/67531/metadc700052/
Electrodepostion of Iron Oxide on Steel Fiber for Improved Pullout Strength in Concrete
Fiber-reinforced concrete (FRC) is nowadays extensively used in civil engineering throughout the world due to the composites of FRC can improve the toughness, flexural strength, tensile strength, and impact strength as well as the failure mode of the concrete. It is an easy crazed material compared to others materials in civil engineering. Concrete, like glass, is brittle, and hence has a low tensile strength and shear capacity. At present, there are different materials that have been employed to reinforce concrete. In our experiment, nanostructures iron oxide was prepared by electrodepostion in an electrolyte containing 0.2 mol/L sodium acetate (CH3COONa), 0.01 mol/L sodium sulfate (Na2SO4) and 0.01 mol/L ammonium ferrous sulfate (NH4)2Fe(SO4)2.6H2O under magnetic stirring. The resulted showed that pristine Fe2O3 particles, Fe2O3 nanorods and nanosheets were synthesized under current intensity of 1, 3, 5 mA, respectively. And the pull-out tests were performed by Autograph AGS-X Series. It is discovering that the load force potential of nanostructure fibers is almost 2 times as strong as the control sample. digital.library.unt.edu/ark:/67531/metadc700033/
Determinants and Impacts of Pinterest Consumer Experiences
Pinterest is one of the fastest growing social networking sites and is attracting the interest of retailers as an effective way to interact with consumers. The purpose of this study was to examine: 1) determinants and impacts of Pinterest consumer experiences. Specifically, this study examined the impacts of retailer reputation, trust, perceived ease of use, and perceived usefulness on Pinterest consumer experiences on retailer SNS. 2) To identify the impacts of Pinterest consumer experiences on consumer satisfaction, behavioral intention, and online retailer relationship. The instrument used existing scales drawn from the literature. A consumer panel (n = 300) of Pinterest users that connect to apparel retailers was used to collect data through an online consumer panel. Reputation is positively related to trust and to perceived ease of use. Perceived ease of use and usefulness significantly affected retailer Pinterest consumer experiences. The impact of Pinterest consumer experiences on satisfaction and behavior intention was positive and significant. Satisfaction and behavior intention also are significantly related to online retailer relationship. Results and business implications are discussed, as well are limitations and future research. digital.library.unt.edu/ark:/67531/metadc700041/
Instructors Adoption of a Web-based Learning System at Rajabhat Universities in Thailand: a Study Using the Unified Theory of Acceptance and Use of Technology
Web-based learning has become an important component of education. Higher education institutions in Thailand have become increasingly aware of the widespread use and effectiveness of web-based learning systems. However, the adoption of such learning systems is growing at a slow pace in Thailand. The purpose of this study was to test the Unified Theory of Acceptance and Use of Technology (UTAUT), that performance expectancy, effort expectancy, social influence, and facilitating conditions have a positive effect on usage intention and adoption of web-based learning systems by instructors, in the Departments of Education at the Rajabhat Universities, Thailand; and to test whether experience of use, age, and gender have moderating effects in the adoption of web-based learning systems there. The research design used in this study was a cross-sectional survey design. Data were collected by means of a self-administered paper questionnaire. The study was conducted among the instructors in the departments of education at the Rajabhat Universities in Thailand. A total of 725 surveys were sent out, 454 questionnaires were returned by the respondents, and 14 were eliminated as outliers; thus, the final data set for the study was 440 samples. The two-step approach of SEM was used to test the model and the study's hypotheses; first, the measurement model was measured to examine the validity and reliability of the data; next, the structural model was measured to test the hypotheses of the study and the fitness of the data to the model. The results of this study revealed several factors that can affect instructors’ adoption of a web-based learning system and which can enhance the web-based learning performance of instructors in the Rajabhat Universities and throughout higher education in Thailand. digital.library.unt.edu/ark:/67531/metadc700039/
Growth Mechanisms, and Mechanical and Thermal Properties of Junctions in 3D Carbon Nanotube-graphene Nano-architectures
Junctions are the key component for 3D carbon nanotube (CNT)-graphene seamless hybrid nanostructures. Growth mechanism of junctions of vertical CNTs growing from graphene in the presence of iron catalysts was simulated via quantum mechanical molecular dynamics (QM/MD) methods. CNTs growth from graphene with iron catalysts is based on a ‘‘base-growth’’ mechanism, and the junctions were the mixture of C-C and Fe-C covalent bonds. Pure C-C bonded junctions could be obtained by moving the catalyst during CNT growth or etching and annealing after growth. The growth process of 3D CNT-graphene junctions on copper templates with nanoholes was simulated with molecular dynamic (MD) simulation. There are two mechanisms of junction formation: (i) CNT growth over the holes that are smaller than 3 nm, and (ii) CNT growth inside the holes that are larger than 3 nm. The growth process of multi-layer filleted CNT-graphene junctions on the Al2O3 template was also simulated with MD simulation. A simple analytical model is developed to explain that the fillet takes the particular angle (135°). MD calculations show that 135° filleted junction has the largest fracture strength and thermal conductivity at room temperature compared to junctions with 90°,120°, 150°, and 180° fillets. The tensile strengths of the as-grown C–C junctions, as well as the junctions embedded with metal nanoparticles (catalysts), were determined by a QM/MD method. Metal catalysts remaining in the junctions significantly reduce the fracture strength and fracture energy. Moreover, the thermal conductivities of the junctions were also calculated by MD method. Metal catalysts remaining in the junctions considerably lower the thermal conductivity of the 3D junctions. digital.library.unt.edu/ark:/67531/metadc700065/
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/
An Evaluation of Negative Reinforcement During Error Correction Procedures
This study evaluated the effects of error correction procedures on sight word acquisition. Participants were four typically developing children in kindergarten and first grade. We used an adapted alternating treatment design embedded within a multiple baseline design to evaluate instructional efficacy of two error correction procedures; one with preferred items plus error correction and one with error correction only, and a concurrent chain schedule to evaluate participant preference for instructional procedure. The results show that there was no difference in acquisition rates between the procedures. The evaluation also showed children prefer procedures that include a positive reinforcement component. digital.library.unt.edu/ark:/67531/metadc700064/
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/
Sputtering of Bi and Preferential Sputtering of an Inhomogeneous Alloy
Angular distributions and total yields of atoms sputtered from bismuth targets by normally incident 10 keV -50 keV Ne+ and Ar+ ions have been measured both experimentally and by computer simulation. Polycrystalline Bi targets were used for experimental measurements. The sputtered atoms were collected on high purity aluminum foils under ultra-high vacuum conditions, and were subsequently analyzed using Rutherford backscattering spectroscopy. The Monte-Carlo based SRIM code was employed to simulate angular distributions of sputtered Bi atoms and total sputtering yields of Bi to compare with experiment. The measured sputtering yields were found to increase with increasing projectile energy for normally incident 10 keV - 50 keV Ne+ and Ar+ ions. The shapes of the angular distributions of sputtered Bi atoms demonstrated good agreement between experiment and simulation in the present study. The measured and simulated angular distributions of sputtered Bi exhibited an over-cosine tendency. The measured value of the degree of this over-cosine nature was observed to increase with increasing incident Ne+ ion energy, but was not strongly dependent on incident Ar+ ion energy. The differential angular sputtering yield and partial sputtering yields due to Ar ion bombardment of an inhomogeneous liquid Bi:Ga alloy have been investigated, both experimentally and by computer simulation. Normally incident 25 keV and 50 keV beams of Ar+ were used to sputter a target of 99.8 at% Ga and 0.2 at% Bi held at 40° C in ultra-high vacuum (UHV), under which conditions the alloy is known to exhibit extreme Gibbsian surface segregation that produces essentially a monolayer of Bi atop the bulk liquid. Angular distributions of sputtered neutrals and partial sputtering yields obtained from the conversion of areal densities of Bi and Ga atoms on collector foils were determined. The Monte-Carlo based SRIM code was employed to simulate the experiment and obtain the angular distribution of sputtered components. The angular distribution of sputtered Ga atoms, originating from underneath the surface monolayer, was measured to be sharply peaked in angle about the surface normal direction compared to the Bi atoms originating from surface monolayer. The simulation study produced contradicting results, where the species originating from surface monolayer was strongly peaked around the surface normal compared to the species originating from beneath the surface monolayer. digital.library.unt.edu/ark:/67531/metadc700021/
Development and Validation of a Measure of Religious and Spiritual Flexibility
Religion and spirituality are vital aspects of many people’s lives both in the United States and across the globe. Although many constructs and measures exist to describe and assess the experience of pursuing the sacred, the complexity of religious and spiritual experience leads to mixed results in relation to well-being and psychopathological traits. However, in broad terms, the relationship appears positive. Over the past 30 years the need for more refined and useful approaches to the study of religious and spiritual behavior has been repeatedly acknowledged. Although authors wisely caution development of further measures without due cause, extant constructs and measures do not provide clear and consistent results for understanding the influence of one’s relationships to religion and spirituality upon behaviors of clinical interest. The present project drew from the functional contextual concept of psychological flexibility, which provides clarity to understanding the encouragement and maintenance of psychological well-being. A new construct of religious and psychological flexibility is explicated as a functional approach to understanding religious and spiritual behavior in a manner that is useful in research and clinical settings alike. The development and evaluation of the Measure of Religious and Spiritual Flexibility (MRSF) is described. The MRSF evidenced adequate internal consistency and test-retest reliability. Confirmatory factor analysis results were positive, but indicate further refinement. Analyses suggested good construct validity of the MRSF in relation to psychological well-being and psychopathology; construct validity in relation to extant constructs in the psychology of religion was varied. Implications and future directions are discussed. digital.library.unt.edu/ark:/67531/metadc700031/
Utilizing Standard Violin Orchestral Excerpts As a Pedagogical Tool: an Analytical Study Guide with Functional Exercises
Orchestral excerpts have been used as a teaching material by violin pedagogues to develop violin techniques in addition to scales and etudes in the twentieth century. However, instructions on developing specific techniques and the relationship to its musical content have been left out. This dissertation provides an analytical study guide addressing the common challenges for violinists. Ten orchestral excerpts are selected from surveying frequently requested orchestral excerpts for the first violin. Through analysis of each excerpt, insight from the other violinists and pedagogues are included. Fifty-four functional exercises with comments are created to help violinists practice effectively and serve as a pedagogical tool in violin instruction. digital.library.unt.edu/ark:/67531/metadc700032/
The Combination of Eastern and Western Musical Worlds: Korean Performance Techniques Applied to Western Symphony Orchestra in Relation to Isang Yun’s Tänzerische Fantasie Für Großes Orchester, Muak (1987)
Isang Yun employed several contrasting methods to achieve the combination of two different musical worlds, Eastern and Western, in his Tänzerische Fantasie für Großes Orchester, Muak. In presenting Eastern elements, he adopts Taoism as his musical philosophy, describes the Korean traditional dance motion Chun-Aeng-Mu (Dance of the Oriole), and applies Korean traditional performance practice in the use of Western instruments. Showing the influence of aspects of Western music, he employs a musical form similar to that of the Baroque Concerto Grosso, evokes Igor Stravinsky’s rhythmic mood and tension from Le Sacre du Printemps (The Rite of Spring), and even uses his own compositional technique Hauptklangtechnik within the format of Western orchestration. In its analysis of Muak, this research project addresses how Korean performance practice can be applied to the modern Western symphony orchestra. This research project also provides insights regarding the sounds of instruments in the Korean tradition and explains how it is possible to create those sounds with modern instruments in order to make Yun’s dream sounds possible. This study provides several examples and describes various performance techniques that appear in Korean traditional music. It provides indications to orchestras and conductors, assisting them to arrive at effective basic performance ideas for the performance of Muak. digital.library.unt.edu/ark:/67531/metadc700060/
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/
Exotic Femininity: Prostitution Reviews and the Sexual Stereotyping of Asian Women
Studies on prostitution have typically focused on the experiences, problems, and histories of prostitutes, rather than examining men who seek to purchase sex. Race has also been overlooked as a central factor in shaping the sex industry and the motivations of men who seek to purchase sex. This study utilizes online reviews of prostitutes to examine the way men who purchase sex discuss Asian prostitutes in comparison to White prostitutes. This paper traces the history of colonialism and ideas of the exotic Orient to modern stereotypes of Asian women. These stereotypes are then used to frame a quantitative and qualitative analysis of online reviews of prostitutes and compare the ways in which Asian prostitutes and white prostitutes are discussed. Further, the reviews are used to examine more broadly what services, traits, and behaviors are considered desirable by men who use prostitutes. The study finds that there are significant quantitative and qualitative differences in how men discuss Asian and White prostitutes within their reviews, and that these differences appear to be shaped by racially fetishizing stereotypes of Asian women. Prostitution also appears to reinforce male dominance and patriarchy in the form of masculine control and the feminine servicing of male sexual and emotional needs. digital.library.unt.edu/ark:/67531/metadc700002/
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/
Investigating the Ability of Pseudomonas Aeruginosa Pyre Mutants to Grow and Produce Virulence Factors
Pseudomonas aeruginosa are medically important bacteria that are notorious for causing nosocomial infections. To gain more knowledge into understanding how this organism operates, it was decided to explore the pyrimidine biosynthetic pathway. Pyrimidine synthesis, being one half of the DNA structure, makes it a very important pathway to the organism’s survivability. With previous studies being done on various genes in the pathway, pyrE has not been studied to the fullest extent. To study the function of pyrE, a site directed mutagenesis was done to completely knock out pyrE, which encodes the protein orotate phosphoribosyl transferase that is responsible for converting orotate into orotate monophosphate (OMP). A mutation in this step leads to accumulation and secretion of orotate into the medium. Analyzing virulence factors produced by the mutant and comparing to the wild type, some intriguing features of the mutant were discovered. One of the findings was the over expression of virulence factors pyoverdin and pyocyanin. Pyocyanin over expression, based on the results of this study, is due to the accumulation of orotate while over production of pyoverdin is due to the accumulation of dihydroorotate. The other virulence factors studied were motility assays, exoproducts, and growth analysis. All virulence factor production was reduced significantly in the mutant compared to the wild type. The casein protease assay showed absolutely no production of proteases in the mutant. The conclusion is that orotate accumulation leads to a significant reduction in virulence factor production in Pseudomonas aeruginosa. In addition to that, it was found that excess orotate in the wild type led to a decrease in quorum sensing regulated products. digital.library.unt.edu/ark:/67531/metadc700016/
“Before I Die…”: Original Composition with a Critical Essay Exploring the Techniques of Six Crossover Composers
Candy Chang developed a public art installation where people are given the opportunity to write their answers to "Before I Die I want to ________." in a public space. I created one of these walls in Denton, TX and set it to music in a 12 minutes and 42 second piece titled Before I Die..., which combines elements of South Indian carnatic music, gospel, R&B, jazz fusion, and minimalism. The composition was influenced by the music of several crossover artists Becca Stevens, Michael League (Snarky Puppy), Nico Muhly, Poovalur Sriji, Tigran Hamasyan, and James Blake. Crossover music, fusion, and third-stream are all synonymous terms used to describe music where multiple genres or styles are authentically combined. The purpose of this thesis is to examine the balance of musical elements in crossover works as well as how specific works composed by the artists mentioned have influenced the creation of the Before I Die... piece. digital.library.unt.edu/ark:/67531/metadc700012/
Reading Isang Yun’s Concerto No 3 Beyond Western Notational Norms
Korean-German composer Isang Yun received international recognition as one of the successful and leading twentieth-century composers. Despite Yun’s lasting fame, some of his works remain lesser known such as all three of his violin concerti. Yun’s main compositional techniques in his violin concerti are abundant ornamentations and articulations that imitate the sound of Korean folk instruments but played on the violin. Without acknowledging Korean folk music performance practices and folk instruments, a violinist cannot accurately deliver what Yun’s music expressed. The fact that Yun’s Violin Concerto No. 3 imitates Korean string instruments, haegeum or komungo, it must be explained how Korean ornamentations are played and can be incorporated on the violin. The purpose of this paper is to provide these answers as well as technical suggestions regarding abundant ornamentations, frequent dynamic and articulation changes, as well as fingerings and bowings. It is hoped that this study will help violin performers to understand Yun’s Concerto No. 3 and encourage more frequent performances of it. digital.library.unt.edu/ark:/67531/metadc700034/
A Performance Guide to the Dramatic, Vocal, and Musical Challenges of Judith Weir’s Opera, King Harald’s Saga
Judith Weir (b. 1954) composed King Harald’s Saga: Grand Opera in Three Acts for Unaccompanied Solo Soprano Singing Eight Rôles (1979) for radio broadcast. She wrote the libretto for the opera based on Snorri Sturluson’s book, King Harald’s Saga. This opera illustrates Weir’s remarkable compositional style, including her treatment of the libretto in narrative style and her representation of multiple characters by one singer. Despite Weir’s fame as an opera composer, King Harald’s Saga is rarely performed owing to three major musical and performing challenges. These challenges are performer’s ability to delineate eight separate characters (dramatic challenges), to sing wide leaps and long melismas (vocal challenges), and to perform a cappella with wide leaps and complex rhythms (musical challenges). This dissertation presents a performance guide for the soprano addressing these three challenges and suggesting possible solutions. Such a guide will assist the soprano in preparing and performing this grand opera, which thus far has not received the due attention and appreciation of either performers or audiences. digital.library.unt.edu/ark:/67531/metadc700055/
Lean on Me: Social Support Compensation and Risk of Death in Older Adults with Type 2 Diabetes
Type 2 diabetes (T2DM) has an estimated incidence of nearly 11 million US adults aged 65 years and older. Evidence suggests that the quality of the marital relationship is an important factor for diabetes related health outcomes affecting self-management and adherence (Kiecolt-Glaser & Newton, 2001). However, an individual in need may compensate for primary support that is unavailable or not optimal by looking for other sources of support, which may be important for health outcomes (Rini, et al., 2008). The present study examined compensation for poor spousal support through other social relationships. A total of 12,640 participants reported they had diabetes and were married (Male = 6,317 and Female = 6,323), and of this group 1,084 men and 583 women had died over the course of the study period. Women reported lower spousal support, but significantly more aggregated social support across relationships than men. Few persons reported low spousal support and low support compensation, rendering the cell sizes highly unequal and the associated data uninterpretable. Ancillary analyses were conducted with the idea that some variance in total compensation support may moderate mortality risk finding that higher aggregated social support across non-spousal relationships was associated with lower risk of death accounting for ~3% of the variance in the final model. The current findings demonstrate how an individual can compensate for a poor primary support relationship through a broader support network. These findings should guide future research to focus on how individuals build, maintain, and seek support from social relationships. digital.library.unt.edu/ark:/67531/metadc700048/
Factors That Influence Athletic Trainers’ Ability to Recognize, Diagnose, and Intervene: Depression in Athletes
Athletic trainers (ATs) are professionals who are most directly responsible for athletes’ health care in a sport environment. ATs work with athletes on prevention, diagnosis, and treatment of athletic injury; it is through these interactions that put ATs in an ideal position to recognize the psychological and emotional distress that athletes may suffer. Consequently, the National Athletic Trainer’s Association (NATA) has called for ATs to be competent in implementing psychosocial strategies and techniques (e.g., goal-setting, imagery, positive self-talk), recognizing basic symptoms of mental disorders, and identifying and referring athletes in need of psychological help. I explored ATs’ ability to recognize, diagnose, and provide a referral for collegiate athletes who were presenting with symptoms of depression across three different scenarios. The study examined factors that may impact ATs’ abilities in these areas, including AT gender, athlete gender, and type of presenting problem (e.g., athletic injury, romantic relationship, or sport performance issue). Overall, female ATs were better at recognizing depressive symptoms than male ATs, though both were equally proficient at diagnosing depression. Regardless of gender of the AT, gender of the athlete, and presenting problem, ATs were most likely to refer the athletes to a counselor/psychologist, and to a lesser extent sport psychology consultant (SPC). ATs viewed referrals to an SPC as most appropriate for presenting problems related to sport (i.e., performance problem or injury). The results highlight a possible bias in referrals to an SPC, in that SPCs may not be considered an appropriate referral source for romantic relationship problems. Implications for ATs and recommendations for future research are discussed. digital.library.unt.edu/ark:/67531/metadc700001/
“Madness” in the Media: How Can Print Journalists Better Report on Mental Illnesses?
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Ethnic Differences in Caregiving Style
This study explored the caregiving styles of 306 grandparents raising grandchild across three ethnic groups (164 European Americans, 65 Latinos, and 77 African Americans). Significant differences were found in caregiving styles between European Americans and African Americans. Caregiver appraisal (burden, satisfaction, and Mastery) was found to be predictive of caregiving style across the entire sample, and differentially by ethnic group. Caregiver style was predictive of grandchild functioning across the entire sample, and differentially by ethnic group. Lastly, caregiver style was found to be predictive of grandparent well-being across the entire sample, and differentially by ethnic group. Implications are discussed in terms of the complex, multidimensional and culturally embedded nature of the caregiving experience and the importance of considering culture for optimal outcomes. digital.library.unt.edu/ark:/67531/metadc700008/
Hermitian Jacobi Forms and Congruences
In this thesis, we introduce a new space of Hermitian Jacobi forms, and we determine its structure. As an application, we study heat cycles of Hermitian Jacobi forms, and we establish a criterion for the existence of U(p) congruences of Hermitian Jacobi forms. We demonstrate that criterion with some explicit examples. Finally, in the appendix we give tables of Fourier series coefficients of several Hermitian Jacobi forms. digital.library.unt.edu/ark:/67531/metadc700083/
“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/
General Purpose Computing in Gpu - a Watermarking Case Study
The purpose of this project is to explore the GPU for general purpose computing. The GPU is a massively parallel computing device that has a high-throughput, exhibits high arithmetic intensity, has a large market presence, and with the increasing computation power being added to it each year through innovations, the GPU is a perfect candidate to complement the CPU in performing computations. The GPU follows the single instruction multiple data (SIMD) model for applying operations on its data. This model allows the GPU to be very useful for assisting the CPU in performing computations on data that is highly parallel in nature. The compute unified device architecture (CUDA) is a parallel computing and programming platform for NVIDIA GPUs. The main focus of this project is to show the power, speed, and performance of a CUDA-enabled GPU for digital video watermark insertion in the H.264 video compression domain. Digital video watermarking in general is a highly computationally intensive process that is strongly dependent on the video compression format in place. The H.264/MPEG-4 AVC video compression format has high compression efficiency at the expense of having high computational complexity and leaving little room for an imperceptible watermark to be inserted. Employing a human visual model to limit distortion and degradation of visual quality introduced by the watermark is a good choice for designing a video watermarking algorithm though this does introduce more computational complexity to the algorithm. Research is being conducted into how the CPU-GPU execution of the digital watermark application can boost the speed of the applications several times compared to running the application on a standalone CPU using NVIDIA visual profiler to optimize the application. digital.library.unt.edu/ark:/67531/metadc700078/
Temporal Complexity and Stochastic Central Limit Theorem
Complex processes whose evolution in time rests on the occurrence of a large and random number of intermittent events are the systems under study. The mean time distance between two consecutive events is infinite, thereby violating the ergodic condition and activating at the same time a stochastic central limit theorem that explains why the Mittag-Leffler function is a universal property of nature. The time evolution of these complex systems is properly generated by means of fractional differential equations, thus leading to the interpretation of fractional trajectories as the average over many random trajectories, each of which fits the stochastic central limit theorem and the condition for the Mittag-Leffler universality. Additionally, the effect of noise on the generation of the Mittag-Leffler function is discussed. Fluctuations of relatively weak intensity can conceal the asymptotic inverse power law behavior of the Mittag-Leffler function, providing a reason why stretched exponentials are frequently found in nature. These results afford a more unified picture of complexity resting on the Mittag-Leffler function and encompassing the standard inverse power law definition. digital.library.unt.edu/ark:/67531/metadc700093/
Joaquín De Arredondo in Texas and Northeastern New Spain, 1811-1821
Joaquín de Arredondo was the most powerful and influential person in northeastern New Spain from 1811 to 1821. His rise to prominence began in 1811 when the Spanish military officer and a small royalist army suppressed Miguel Hidalgo’s revolution in the province of Nuevo Santander. This prompted the Spanish government to promote Arredondo to Commandant General of the Eastern Internal Provinces, making him the foremost civil and military authority in northeastern New Spain. Arredondo’s tenure as commandant general proved difficult, as he had to deal with insurgents, invaders from the United States, hostile Indians, pirates, and smugglers. Because warfare in Europe siphoned much needed military and financial support, and disagreements with New Spain’s leadership resulted in reductions of the commandant general’s authority, Arredondo confronted these threats with little assistance from the Spanish government. In spite of these obstacles, he maintained royalist control of New Spain from 1811 to 1821, and, in doing so, changed the course of Texas, Mexican, and United States history. In 1813, he defeated insurgents and American invaders at the Battle of Medina, and from 1817 to 1820, his forces stopped Xavier Mina’s attempt to bring independence to New Spain, prevented French exiles from establishing a colony in Texas, and defeated James Long’s filibustering expedition from the United States. Although unable to sustain Spanish rule in 1821, Arredondo’s approval of Moses Austin’s petition to settle families from the United States in Texas in 1820 and his role in the development of Antonio López de Santa Anna, meant the officer continued to influence Mexico. Perhaps Arredondo’s greatest importance is that the study of his life provides a means to learn about an internationally contested region during one of the most turbulent eras in North American history. digital.library.unt.edu/ark:/67531/metadc699939/
Procedural Generation of Content for Online Role Playing Games
Video game players demand a volume of content far in excess of the ability of game designers to create it. For example, a single quest might take a week to develop and test, which means that companies such as Blizzard are spending millions of dollars each month on new content for their games. As a result, both players and developers are frustrated with the inability to meet the demand for new content. By generating content on-demand, it is possible to create custom content for each player based on player preferences. It is also possible to make use of the current world state during generation, something which cannot be done with current techniques. Using developers to create rules and assets for a content generator instead of creating content directly will lower development costs as well as reduce the development time for new game content to seconds rather than days. This work is part of the field of computational creativity, and involves the use of computers to create aesthetically pleasing game content, such as terrain, characters, and quests. I demonstrate agent-based terrain generation, and economic modeling of game spaces. I also demonstrate the autonomous generation of quests for online role playing games, and the ability to play these quests using an emulated Everquest server. digital.library.unt.edu/ark:/67531/metadc700051/
A Multiple Case Study of Two African American Female Administrators in High Achieving Elementary Schools
African American female principals typically lead low socioeconomic elementary schools. Administrators in predominately urban schools are familiar with the needs of minority students. Although Title I funds are provided from the national government via local educational agencies (LEAs), this money is normally not enough to keep up with technology integration and programs of more affluent schools. Therefore, African American female administrators rely on culture to develop meaningful relationships with students, teachers, and parents and makeup for any financial hardships, which may exist during the transformation of urban elementary schools. Limited research is available on academic success in urban schools. Over the years, much of the focus has been on failure of underperforming schools with minority students and leaders. Additionally, there is a lack of research on the leadership of African American female school leaders. Thus, it is important to study successful African American female role models in urban schools. The purpose of this study was to examine transformational leadership skills evident in African American female principals at high-achieving, urban elementary schools. What are the transformational leadership skills evident in two African American female principals who work in high-achieving urban elementary schools? It was assumed that African American female principals applied some or all of the skills of transformational leadership when leading in two different urban elementary school settings. Successful transformational leadership can be categorized under the following four components 1) charismatic leadership (or idealized influence, CL or II), 2) inspirational motivation (IM), 3) intellectual stimulation (IS), and 4) individualized consideration (IC) (Avolio, Bass, & Jung, 1997). Results showed that African American female elementary school leaders displayed all tenets of the transformational leadership theory while leading high achieving campuses. However, the transformational leadership theoy was missing a cultural component from its doctrine. digital.library.unt.edu/ark:/67531/metadc699960/
Weeding Out the Undesirables: the Red Scare in Texas Higher Education, 1936-1958
When the national Democratic Party began to transform to progressive era politics because of the New Deal, conservative reactionaries turned against the social welfare programs and used red scare tactics to discredit liberal and progressive New Deal Democrat professors in higher education. This process continued during the Second World War, when the conservatives in Texas lumped fascism and communism in order to anchor support and fire and threaten professors and administrators for advocating or teaching “subversive doctrine.” In 1948 Texas joined other southern states and followed the Dixiecrat movement designed to return the Democratic Party to its original pro-business and segregationist philosophy. Conservatives who wanted to bolster their Cold Warrior status in Texas also played upon the fears of spreading communism during the Cold War, and passed several repressive laws intended to silence unruly students and entrap professors by claiming they advocated communist doctrine. The fight culminated during the Civil Rights movement, when conservatives in the state attributed subversive or communist behavior to civil rights organizations, and targeted higher education to protect segregated universities. In order to return the national Democratic Party to the pro-business, segregationist philosophy established at the early twentieth century, conservatives used redbaiting tactics to thwart the progressivism in the state’s higher education facilities. digital.library.unt.edu/ark:/67531/metadc699918/
Somebody Else’s Second Chance
Charles Baxter, in his essay “Dysfunctional Narratives: or: ‘Mistakes Were Made,’” implies that all trauma narrative is synonymous with “dysfunctional narrative,” or narrative that leaves all characters unaccountable. He writes: “In such fiction, people and events are often accused of turning the protagonist into the kind of person the protagonist is, usually an unhappy person. That’s the whole story. When blame has been assigned, the story is over.” For Baxter, trauma narrative lets everyone “off the hook,” so to speak. He would say that we write about our bitter lemonade to make excuses for our poor choices, and “audiences of fellow victims” read our tales, because their lemonade and their choices carry equal bitterness, and they require equal excuses. While trauma narrative can soothe us, as can other narrative genres, we should not dismiss trauma fiction because of a sweeping generalization. Trauma fiction also allows us to explore the missing parts of our autobiographical narratives and to explore the effects of trauma—two endeavors not fully possible without fiction. As explained in more detail later, the human mind requires narrative to formulate an identity. Trauma disrupts this process, because “trauma does not lie in the possession of the individual, to be recounted at will, but rather acts as a haunting or possessive influence which not only insistently and intrusively returns but is, moreover, experienced for the first time only in its belated repetition.” Because literature can speak what “theory cannot say,” we need fiction to speak in otherwise silent spaces. Fiction allows us to express, analyze, and comprehend what we could not otherwise. digital.library.unt.edu/ark:/67531/metadc699902/
The Impact of Information Security Awareness on Compliance with Information Security Policies: a Phishing Perspective
This research seeks to derive and examine a multidimensional definition of information security awareness, investigate its antecedents, and analyze its effects on compliance with organizational information security policies. The above research goals are tested through the theoretical lens of technology threat avoidance theory and protection motivation theory. Information security awareness is defined as a second-order construct composed of the elements of threat and coping appraisals supplemented by the responsibilities construct to account for organizational environment. The study is executed in two stages. First, the participants (employees of a municipality) are exposed to a series of phishing and spear-phishing messages to assess if there are any common characteristics shared by the phishing victims. The differences between the phished and the not phished group are assessed through multiple discriminant analysis. Second, the same individuals are asked to participate in a survey designed to examine their security awareness. The research model is tested using PLS-SEM approach. The results indicate that security awareness is in fact a second-order formative construct composed of six components. There are significant differences in security awareness levels between the victims of the phishing experiment and the employees who maintain compliance with security policies. The study extends the theory by proposing and validating a universal definition of security awareness. It provides practitioners with an instrument to examine awareness in a plethora of settings and design customized security training activities. digital.library.unt.edu/ark:/67531/metadc699974/