UNT Theses and Dissertations - 3,436 Matching Results

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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 students with ADHD likely have, and inform treatment interventions.
The Aesthetics of Sin: Beauty and Depravity in Early Modern English Literature
This dissertation argues that early modern writers such as William Shakespeare, Thomas Middleton, George Herbert, John Milton, and Andrew Marvell played a critical role in the transition from the Neoplatonic philosophy of beauty to Enlightenment aesthetics. I demonstrate how the Protestant Reformation, with its special emphasis on the depravity of human nature, prompted writers to critique models of aesthetic judgment and experience that depended on high faith in human goodness and rationality. These writers in turn used their literary works to popularize skepticism about the human mind's ability to perceive and appreciate beauty accurately. In doing so, early modern writers helped create an intellectual culture in which aesthetics would emerge as a distinct branch of philosophy.
African American Student Placement in Disciplinary Alternative Education Programs
The purpose of this study was to determine the relationship (predicative capability) between selected variables, specifically, African American student enrollment, teacher ethnicity, and urban or rural district classification and the number of African American student placements in a disciplinary alternative education program (DAEP). The study used a non-experimental ex post facto design. Archival data from the Texas Education Agency were used to identify Texas schools that sent African American students to a DAEP during the 2013-2014 school year. Archival data from the Texas Education Agency were also used to identify African American student enrollment and teacher ethnicity for the selected school districts. Finally, archival data from the Texas Department of Agriculture were used to identify district classifications of urban or rural. Participants in this study consisted of 187 school districts that placed African American students in a DAEP during the 2013-2014 school year. Based on the findings, teacher ethnicity and African American student enrollment are statistically significant contributions to African American student placement in a DAEP. Urban or rural district classification is not a statistically significant predictor in the same placements. Results of this study add to existing literature by confirming that there is an overrepresentation of African American student placements in DAEPs and suggesting possible ways to combat this epidemic.
Analysis and Performance of a Cyber-Human System and Protocols for Geographically Separated Collaborators
This dissertation provides an innovative mechanism to collaborate two geographically separated people on a physical task and a novel method to measure Complexity Index (CI) and calculate Minimal Complexity Index (MCI) of a collaboration protocol. The protocol is represented as a structure, and the information content of it is measured in bits to understand the complex nature of the protocol. Using the complexity metrics, one can analyze the performance of a collaborative system and a collaboration protocol. Security and privacy of the consumers are vital while seeking remote help; this dissertation also provides a novel authorization framework for dynamic access control of resources on an input-constrained appliance used for completing the physical task. Using the innovative Collaborative Appliance for REmote-help (CARE) and with the support of a remotely located expert, fifty-nine subjects with minimal or no prior mechanical knowledge are able to elevate a car for replacing a tire in an average time of six minutes and 53 seconds and with an average protocol complexity of 171.6 bits. Moreover, thirty subjects with minimal or no prior plumbing knowledge are able to change the cartridge of a faucet in an average time of ten minutes and with an average protocol complexity of 250.6 bits. Our experiments and results show that one can use the developed mechanism and methods for expanding the protocols for a variety of home, vehicle, and appliance repairs and installations.
Analysis of Heat Transfer Enhancement in Channel Flow through Flow-Induced Vibration
In this research, an elastic cylinder that utilized vortex-induced vibration (VIV) was applied to improve convective heat transfer rates by disrupting the thermal boundary layer. Rigid and elastic cylinders were placed across a fluid channel. Vortex shedding around the cylinder led to the periodic vibration of the cylinder. As a result, the flow-structure interaction (FSI) increased the disruption of the thermal boundary layer, and therefore, improved the mixing process at the boundary. This study aims to improve convective heat transfer rate by increasing the perturbation in the fluid flow. A three-dimensional numerical model was constructed to simulate the effects of different flow channel geometries, including a channel with a stationary rigid cylinder, a channel with a elastic cylinder, a channel with two elastic cylinders of the same diameter, and a channel with two elastic cylinders of different diameters. Through the numerical simulations, the channel maximum wall temperature was found to be reduced by approximately 10% with a stationary cylinder and by around 17% when introducing an elastic cylinder in the channel compared with the channel without the cylinder. Channels with two-cylinder conditions were also studied in the current research. The additional cylinder with the same diameter in the fluid channel only reduced the surface wall temperature by 3% compared to the channel without any cylinders because the volume of the second cylinder could occupy some space, and therefore, reduce the effect of the convective heat transfer. By reducing the diameter of the second cylinder by 25% increased the effect of the convection heat transfer and reduced the maximum wall temperature by around 15%. Compared to the channel with no cylinder, the introduction of cylinders into the channel flow was found to increase the average Nusselt number by 55% with the insertion of a stationary rigid cylinder, by 85% with the ...
An Analytical Perspective of the Developing Aesthetic Concepts in Sergey Prokofiev's "Choses en soi," Op. 45
The purpose of this study is to analyze the compositional techniques in Choses en soi op.45, by Sergey Prokofiev, and to explore the new aesthetic concepts he claimed to include in this composition. Through the examination of the compositional elements and discussion of its salient characteristics.
Arduino Based Hybrid MPPT Controller for Wind and Solar
Renewable power systems are becoming more affordable and provide better options than fossil-fuel generation, for not only the environment, but a benefit of a reduced cost of operation. Methods to optimize charging batteries from renewable technologies is an important subject for off-grid and micro-grids, and is becoming more relevant for larger installations. Overcharging or undercharging the battery can result in failure and reduction of battery life. The Arduino hybrid MPPT controller takes the advantage of solar and wind energy sources by controlling two systems simultaneously. The ability to manage two systems with one controller is better for an overall production of energy, cost, and manageability, at a minor expense of efficiency. The hybrid MPPT uses two synchronous buck DC-DC converters to control both wind and solar. The hybrid MPPT performed at a maximum of 93.6% efficiency, while the individual controller operated at a maximum 97.1% efficiency when working on the bench test. When designing the controller to manage power production from a larger generator, the inductor size was too large due to the frequency provided by the Arduino. A larger inductor means less allowable current to flow before the inductor becomes over saturated, reducing the efficiency of the controller. Utilizing a different microcontroller like the PIC16C63A produces a much faster frequency, which will reduce the inductor size needed and allow more current before over saturation.
Artscapes: Community Perceptions of City Beautification through Murals in Denton, Texas
Keep Denton Beautiful (KDB) is inspired by Keep America Beautiful's model of community engagement to create a clean, beautiful, and vibrant city. The community mural initiative, Artscapes, aims to enliven public spaces, abate graffiti, and inspire community members to keep Denton, Texas, clean and beautiful. The goals of this research project are to understand the impact of Artscapes initiative, community perceptions of public art, and find ways KDB can better align future mural projects with the needs and desires of community members. By talking to artists that have worked with KDB, members of the mural art committee, and community members from the neighborhoods that have existing murals, this research provides input from these three populations to continue creating public art for the Denton community. I discuss the context of my work through Lefebvre's concept of "Right to the City," Rafael Schacter's opposition between sanctioned and non-sanctioned murals, Bourdieu's concept of symbolic and social capital, and David Harvey's work on neoliberalism and the entrepreneurial city.
An Assessment of Extant Euphonium Methodologies for Developing and Performing in the Upper Register
This dissertation presents a categorization of existing methodologies of upper register development for euphoniumists with evaluation of effectiveness and current use of these methodologies. The purpose of this study is to provide euphonium musicians as well as educators with essential references and guides to applicable methods for developing the upper register more effectively with greater efficacy. The assessments of current methodologies include three steps: categorization, summarization, and evaluation. To support the significance why it could be more beneficial than the methodology alone, the dissertation will include the examination of the aspect of biomechanics and ergonomics, suggestions, and discussion of particular issues of the upper register.
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.
Catalysts of Women's Success in Academic STEM: A Feminist Poststructural Analysis
This study analyzes senior women faculty's discourses about personal and professional experiences they believe contributed to their advancement in academic careers in science, technology, engineering, and mathematics (STEM). The purpose of the study is to understand factors that activate women's success in STEM disciplines where women's representation has not yet attained critical mass. A poststructuralist emphasis on complexity and changing nature of power relations offers a framework that illuminates the ways in which elite women navigate social inequalities, hierarchies of power, and non-democratic practices. Feminist poststructural discourse analysis (FPDA) methods allow analysis of women's talk about their experiences in order to understand the women's complex, shifting positions. Eight female tenured full professors of STEM at research-focused universities in the United States participated in the study. Data sources were in-depth semi-structured interviews, a demographic survey, and curricula vitae. Findings will help shape programs and policies aimed at increasing female representation and promoting achievement at senior levels in academic STEM fields.
Cattle Capitalists: The XIT Empire in Texas and Montana
The Texas Constitution of 1876 set aside three million acres of Texas public land in exchange for construction of the monumental red granite Capitol that continues to house Texas state government today. The Capitol project and the land went to an Illinois syndicate led by men influential in business and politics. Austin's statehouse is a recognizable symbol of Texas around the world. So too, the massive Panhandle tract given in exchange -- what became the "fabulous" XIT Ranch -- has come to, for many, symbolize Texas and its role in the nineteenth century cattle boom. After finding sales prospects for the land, known as the Capitol Reservation, weak at the time, backed by British capital, the Illinois group, often called the Capitol Syndicate, turned their efforts to cattle ranching to satisfy investors until demand for the land increased. The operation included a satellite ranch in Montana to which two-year-old steers from Texas were sent for fattening, often "over the trail" on a route increasingly blocked by people and settlement. Rather than a study focused on ranching operations on the ground -- the roundups, the cattle drives, the cowboys -- this instead uncovers the business and political side of the Syndicate's ranching operation, headquartered in Chicago. The operation of the XIT Ranch looked more like other Gilded Age businesses employing armies of clerks, bookkeepers, and secretaries instead of how great western ranches have been portrayed for years in popular literature and media. The XIT Ranch existed from 1885 to 1912, yet from Texas to Montana the operation left a deep imprint on community culture and historical memory.
Child Centered Play Therapy (CCPT) with Latina/o Children Exhibiting School Behavior Problems: Comparative Effects of Delivery by Spanish-Speaking and English-Speaking Counselors
The shortage of bilingual counselors is one barrier to young Latina/o children receiving mental health services. Child-centered play therapy (CCPT) is a developmentally responsive intervention based on the premise that play is children's natural means of communication across cultures. This randomized controlled study examined the effects of CCPT with young Spanish-speaking Latina/o children exhibiting clinical levels of school behavior problems. Participants were 57 pre-K to kindergarten Latina/o children (72% male; mean age = 4.0) randomly assigned to three treatment groups: CCPT with Spanish-speaking, bilingual counselors; CCPT with English-speaking, monolingual counselors; or active control (bilingual mentoring). Monolingual counselors participated in cultural competency training and supervision with bilingual counselors and supervisors. According to independent observers and teachers blinded to children's group assignment, both the bilingual CCPT group and the monolingual CCPT group demonstrated moderate treatment effects over bilingual mentoring, yet between-group differences were not statistically significant. Analysis of within-group change over time indicated that children in both CCPT interventions demonstrated statistically significant improvement, while the mentoring group did not. The percentage of children in each treatment group who improved from clinical to normal behavioral functioning suggests the clinical significance of the findings: 80% bilingual CCPT, 70% monolingual CCPT, 15% bilingual mentoring. Overall, findings indicate that CCPT, whether delivered by bilingual counselors or culturally-competent, monolingual counselors, is a promising intervention for young Latina/o children exhibiting behavior problems.
Child-Centered Play Therapy with Children Affected by Adverse Childhood Experiences: A Single Case Design
Child centered play therapy (CCPT) is a therapeutic intervention that provides the environment for children to work through and heal from difficult experiences through expression of play and therapeutic relationship. It has been demonstrated effective with multiple types of disruptive behaviors. I conducted single-case research to explore CCPT's influence on children who had four or more adverse childhood experiences (ACEs) and provided analysis of data collected from one assessment administered weekly and one assessment at pre-, mid-, and post-intervention: the Strength and Difficulties Questionnaire and the Trauma Symptoms Checklist for Young Children. The two participants (one 8-year-old White American male and one 9-year-old White American female) demonstrated significant improvement in total difficulties and prosocial behaviors. The study revealed potential therapeutic benefits for utilizing CCPT with children who had four or more ACEs. Encompassed in discussion of study results are implications for practice, suggestions for future research, and limitations.
Children with Emotional and Behavioral Disorders in Saudi Arabia: A Preliminary Prevalence Screening
Education in Saudi Arabia, including the education of children with special needs, is developing rapidly. However, children with emotional and behavioral disorders are neither consistently identified nor adequately served in Saudi Arabia although they are recognized as a distinct category of children who require special education services. The goal of this study was to examine the prevalence of emotional and behavioral disorders among children in Saudi Arabia to assess the need for intervention services to help those children reach their potential. The current research identified the types of behaviors that are most evident in the study sample. Also, the relationship between demographics and emotional and behavioral disorders is studied to identify possible predictors of disruptive forms of behavior. Parents of children aged 4-17 years in Saudi Arabia were surveyed using the Strengths and Difficulties Questionnaire. The findings of the study suggest that children with emotional and behavioral disorders in Saudi Arabia may account for 20% of the population of children between the ages of 4 and 17. The findings also revealed that over 20% of children in Saudi Arabia have difficulties in peer relationship and lack the necessary prosocial behaviors. The parent reporting, child gender, child education type, the geographical region, the father's education level, and the family's socioeconomic status were found to be statistically significant predictors of children's difficulties. However, these predictors were only able to explain a small portion of the difficulty scores.
Civil Liberties and National Unity: Reaction to the Sedition Act in the Southern States, 1798
The traditional narrative of political party development in the United States of America during the latter half of the 1790s ascribes the decline in popularity of the Federalist Party in the Election of 1800 to that party's passage of controversial legislation, specifically the Sedition Act of 1798, prior to the election. Between the passage of the Sedition Act and the Election of 1800, however, the midterm elections of 1798-1799 transpired and resulted in a significant increase in Federalist popularity in four states – North Carolina, South Carolina, Georgia, and Virginia. This study seeks to ascertain why these four states increased their support for the Federalist Party in 1798-1799, despite the passage of the Sedition Act by the Federalist Party. By examining newspapers and election results, this study analyzes the reaction of these four states to the passage of the Sedition Act and finds that generally, these states did not react strongly against the Sedition Act in the immediate aftermath of its passage. Instead, all four states urged national unity and emphasized the need to support the national government because the United States faced the threat of war with France. This study employs a state-by-state formula to determine each state's individual reaction to the Sedition Act and the Quasi-War, finding that ultimately, the Sedition Act did not have as significant of an impact in these states as the popular narrative holds.
Co-Occurrence of Rape Myth Acceptance and Intolerant Attitudes in a Military Sample
Sexual trauma within the military is a widespread issue, and rape myth acceptance has been shown to contribute to its prevalence. Given that the military culture has been shown to lend itself to hypermasculinity and traditional gender role adherence, both of which facilitate aggression toward women, this effect warrants investigation within a military sample. The present study replicated and expanded upon Aosved and Long's (2006) study examining 85 veteran and active duty military members' responses on the Illinois Rape Myth Acceptance Scale, Attitudes Toward Women Scale (short form), Neosexism Scale, Male Role Norms Inventory (short form), Modern and Old Fashioned Racism Scale, Modern Homophobia Scale, a modified version of the Economic Belief Scale, Fraboni Scale of Ageism, Religious Intolerance Scale, and the Marlowe–Crowne Social Desirability Scale (short form). Findings provide support for the co-occurrence of rape myth acceptance with intolerant attitudes, including sexism, hypermasculine gender role ideology, racism, sexual prejudice, classism, ageism, and religious intolerance, both individually and collectively. These results provide insight into the functioning of intolerant attitudes within a military sample, and provide important insight for future research addressing the association between rape myth acceptance and rape proclivity and the perpetration of military sexual assault.
College Readiness and Dual Credit Participation of Alternative High School Students
The purpose of this study was to explore the extent to which alternative schools add value to the college readiness of their students, as well as to measure the capacity of alternative school students to successfully complete dual credit courses while enrolled at the alternative school. This mixed methods study utilized an exploratory approach with a descriptive research design to explore the extent to which alternative schools produce college-ready students. The Texas Success Initiative Assessment was used to measure participants' academic readiness levels in mathematics, reading, and writing. Additionally, participants had the opportunity to provide their own perspectives on their college readiness levels through a student survey and semi-structured face-to-face interview. The results of this study reveal that the college readiness levels of alternative high school students varied across academic areas. Of the tested participants, 41.1% were college ready in reading, 52.1% in writing, and 16.7% in mathematics. Additionally, the findings reveal that dual credit course participation was not a viable option because of course prerequisites and the amount of time needed to complete dual credit courses. Results of this study expand on the literature to provide a better understanding of the effectiveness of alternative school programs, the college readiness levels of alternative high school students, and the capacity of alternative high school students to successfully complete college coursework while in high school.
Considerations for Global Development and Impact using Haiti as a Case Study
As the world becomes more connected, issues surrounding sustainable development are coming to the fore of global discussions. This is exemplified in strategies such as the United Nation's Sustainable Development Goals (SDGs), released in 2015, which created a framework for global development that defines specific goals for issues like poverty, climate change, and social justice. To complement the analysis that went into defining the SDGs, capital allocations around the world are becoming more impact focused so that the paradigm of development is shifting from donations to impact investments. The push for impact, however, has led to a homogenization of global challenges like reproductive health and poverty. This, in turn, has led to a standardization of information resulting in agencies designing interventions based on data and information that is misguided because of incorrect assumptions about a specific context. This paper explores how the decision-making mechanisms of global development agencies and investors could apply more anthropological processes to mitigate negative impact. As the development sector becomes more and more standardized, anthropologists can act as translators between affected communities and the institutions deciding how best to help them.
Corbicula fluminea Invasion as a Secondary Effect of Hydrilla verticillata Management via Triploid Grass Carp (Ctenopharyngodon idella)
A study of Asian clam (Corbicula fluminea Müller) colonization in relation to changes in aquatic vegetation community as a result of management of Hydrilla verticillata (L. f.) Royle with grass carp was conducted at the Lewisville Aquatic Ecosystem Research Facility (LAERF), Lewisville, TX, from April 2015 through October 2016. Percent vegetation cover, C. fluminea abundance and water quality metrics (pH, turbidity, conductivity, DO, calcium, chlorophyll a) from 16 experimental subjects were analyzed. Treatments included four replicated grass carp stocking densities; 1-control with no fish stocked (n = 4), 2-low density of 40-43 fish per vegetated ha (n = 4), 3-medium density of 72-81 fish per vegetated ha (n = 4) and 4-high density of 110-129 fish per vegetated ha (n = 4). Data analysis showed statistical significance in the relation of C. fluminea abundance to percent vegetation cover (multiple linear regression, r2 = 0.820), grass carp stocking densities (two-way analysis of variance, p = <0.001) and chlorophyll a (multiple linear regression, r2 = 0.339). Findings of this research indicate the possibility that management of hydrilla had enabled establishment of secondary invasive species.
Core-Shell Based Metamaterials: Fabrication Protocol and Optical Properties
The objective of this study is to examine core-shell type plasmonic metamaterials aimed at the development of materials with unique electromagnetic properties. The building blocks of metamaterials under study consist of gold as a metal component, and silica and precipitated calcium carbonate (PCC) as the dielectric media. The results of this study demonstrate important applications of the core-shells including scattering suppression, airborne obscurants made of fractal gold shells, photomodification of the fractal structure providing windows of transparency, and plasmonics core-shell with a gain shell as an active device. Plasmonic resonances of the metallic shells depend on their nanostructure and geometry of the core, which can be optimized for the broadband extinction. Significant extinction from the visible to mid-infrared makes fractal shells very attractive as bandpass filters and aerosolized obscurants. In contrast to the planar fractal films, where the absorption and reflection equally contribute to the extinction, the shells' extinction is caused mainly by the absorption. This work shows that the Mie scattering resonance of a silica core with 780 nm diameter at 560 nm is suppressed by 75% and only partially substituted by the absorption in the shell so that the total transmission is noticeably increased. Effective medium theory supports our experiments and indicates that light goes mostly through the epsilon-near-zero shell with approximately wavelength independent absorption rate. Broadband extinction in fractal shells allows as well for a laser photoburning of holes in the extinction spectra and consequently windows of transparency in a controlled manner. Au fractal nanostructures grown on PCC flakes provide the highest mass normalized extinction, up to 3 m^2/g, which has been demonstrated in the broad spectral range. In the nanoplasmonic field active devices consist of a Au nanoparticle that acts as a cavity and the dye molecules attached to it via thin silica shell as the ...
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 perceived of as the natural vulnerability in English bodies to suggest the passionate responses associated with impressionability can actually be sources of productive judgment and self-edification. I argue the storm models this passionate judgment, providing a guide for audience behavior. In Chapter 5, I argue that the memories created by and within the women in The Winter's Tale evoke the tradition of housewifery and emphasize the female role in preservation. Female characters stand in for hidden female contributors to the theater and expose societal blindness to women's work. Through each of these chapters, I argue that Shakespeare's plays emphasize the ...
Counselors Explore their Attachment Strategies: An Interpretative Phenomenological Analysis
This study explored participants' experiences of being interviewed with the Adult Attachment Interview as a means of supporting counselor self-awareness and fostering effective counselor-client working alliances. A sample of first-year counselor education doctoral students (n = 7) completed an AAI interview and feedback session. Participants completed five reflective journals over three weeks and explored their experiences in individual, semi-structured interviews. Data were analyzed according to interpretative phenomenological analysis protocol. Four superordinate themes emerged from the analysis: (a) reactions to the AAI interview process, (b) process with AAI feedback, (c) AAI and intrapersonal process, and (d) AAI and interpersonal process. Additionally, there were eight subordinate themes: (a) surprised by AAI interview process, (b) interview process sparked reflection, (c) initial reaction to AAI feedback, (d) evolving process of integrating AAI feedback, (e) AAI process increased awareness, (f) increased self-awareness increased self-efficacy, (g) awareness from AAI process prompted relational shifts, (h) impact of AAI on clinical work, (i) importance of relationships, (j) importance of self-awareness, and (k) mutual influence of personal and professional. Findings in this study suggest that the AAI is an effective tool in supporting counselor self-awareness regarding attachment strategies. Additionally, findings suggest multiple personal and professional benefits, such as increased awareness of conflict and stress management strategies. Limitations to the study and further discussion of the results are presented. Implications for clinical practice, counselor education, and future research are also included.
Design, Construction, and Application of an Electrostatic Quadrupole Doublet for Heavy Ion Nuclear Microprobe Research
A nuclear microprobe, typically consisting of 2 - 4 quadrupole magnetic lenses and apertures serving as objective and a collimating divergence slits, focuses MeV ions to approximately 1 x 1 μm for modification and analysis of materials. Although far less utilized, electrostatic quadrupole fields similarly afford strong focusing of ions and have the added benefit of doing so independent of ion mass. Instead, electrostatic quadrupole focusing exhibits energy dependence on focusing ions. A heavy ion microprobe could extend the spatial resolution of conventional microprobe techniques to masses untenable by quadrupole magnetic fields. An electrostatic quadrupole doublet focusing system has been designed and constructed using several non-conventional methods and materials for a wide range of microprobe applications. The system was modeled using the software package "Propagate Rays and Aberrations by Matrices" which quantifies system specific parameters such as demagnification and intrinsic aberrations. Direct experimental verification was obtained for several of the parameters associated with the system. Details of the project and with specific applications of the system are presented.
Economic Resilience, Disasters, and Green Jobs: An Institutional Collective Action Framework
This dissertation is about economic resilience of local governments to natural disasters. Specifically, the dissertation investigates resilience on regional level. Moreover, the dissertation also investigates growth in the green job sector in local governments. The findings indicate that local governments working with each other helps green job creation. In addition, the dissertation finds that green jobs, following disasters, experience three percent growth. This dissertation is important because it investigates the relationship between climate- related disasters and green jobs, which is an area that is under-investigated.
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.
Effect of Child Parent Relationship Therapy (CPRT) with Adoptive Parents of Preadolescents: A Pilot Study
Older adopted children and their families often express high need for support for attachment and trauma related concerns. Post-adoption mental health intervention focused on enhancing the parent-child relationship among adoptive parents and adoptees is essential for fostering placement permanency among these families. This single group pilot study explored the effect of Child-Parent Relationship Therapy (CPRT) for adoptive parents of preadolescents who reported attachment related concerns, stress in the parent-child relationship, and child behavior problems. Participants were 11 adoptive parents ages 25 to 64 (55% male; 91% couples; 100% married; 56% European American, 27% Asian, 9% Hispanic, and 9% Black American) with adoptees between the ages of 8 to 14 (56% male; 56% Hispanic, 33% European American, and 11% Black American). All child participants were adopted out of foster care. Data was collected at baseline, pretest, midtest, and posttest. Results from non-parametric Friedman test of differences across 4 points of measure indicated that CPRT demonstrated statistically significant improvement for the 3 outcome variables: parental empathy, child behavior, and parent child relationship stress. Specifically, results indicated that prior to receiving CPRT (baseline to pretest), parents demonstrated no change or worsening in functioning across all variables, whereas during the intervention phase findings showed a large treatment effect for parental empathy, a medium effect for parenting stress, and a small effect for child behavior problems. Findings from this pilot study support CPRT as a promising mental health intervention for adoptive parents and preadolescent children. Clinical implications and recommendations for working with adoptive parents of preadolescents are explored within the context of these findings.
The Effectiveness of Peer Mentoring with High School Student Mentors and Child Mentees
This randomized, controlled study examined the effectiveness of two mentoring programs, child mentor relationship training (CMRT) and peer assistance and leadership (PAL®), on high school mentor empathic behaviors and child mentee behavior problems. Participants were 60 young, at-risk students (61.7% male; 38.3% Hispanic/Latino/a, 31.7% Caucasian, 21.7% African American, 8.3% biracial) and 30 high school students (53.3% male; 66.7% Caucasian, 26.7% Hispanic/Latino/a, 0.03% African American, 0.03% Asian). Mentors and mentees were randomly assigned to CMRT or PAL®, which was treatment as usual in the participating school district. Results from 2 (group) by 2 (time) repeated measures ANOVAs indicated compared to the PAL® treatment group over time, mentors in the CMRT group demonstrated statistically significant improvement in empathic behaviors with a large treatment effect, as rated by independent observers. Analysis revealed a moderate treatment effect with CMRT group mentee behavior problems, but the difference was not statistically significant between treatment groups over time. Further analysis revealed the CMRT group demonstrated statistically significant reductions in behavior problems from pre- to post-test with a very large treatment effect. Overall, findings support CMRT as a promising school-based intervention for at-risk young children that potentially increases school counselor efficiency.
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 can take advantage of extreme events when initiating a policy change. The results also suggest that political institutions can shape the effects of natural disasters on municipalities' climate mitigation and adaptation actions.
Effects of HALSs and Nano-ZnO Worked as UV Stabilizers of Polypropylene
This work reports the outdoor weathering performance of ultraviolet (UV)-stabilized polypropylene (PP) products (using PP resins from Encore Wire). Different hindered amine light stabilizers (HALSs) and nano-ZnO were used to stabilize PP-film-based formulations that were exposed under UV light for 6 weeks simulating for in harsh outdoor weather of Dallas, Texas, USA in 2016. Characterization of the exposed PP film products was done in terms of mechanical and friction spectroscopic properties. The PP film formulations were divided into 15 categories based on the type of HALS and nano-ZnO incorporated. This was done to derive meaningful comparison of the various film formulations. Following exposure under UV light, the lifetimes of certain formulations were determined. On the basis of the mechanical and friction properties, it was determined that generally, the HALS or nano-ZnO stabilized PP film give better properties and if those two kinds of UV stabilizers can work together.
The Effects of Multicultural Discussions and Supervisory Working Alliance on Multicultural Counseling Competence
This study examined the influence of multicultural training, multicultural discussions in supervision, and the supervisory working alliance on multicultural counseling competence. The sample consisted of 57 doctoral counseling interns, doctoral graduate students and post-doctoral students in counseling and clinical psychology. Participants completed several instruments including a demographic questionnaire, the Supervisory Working Alliance Inventory - Trainee, and the Multicultural Counseling Inventory. They filled out two questionnaires created for this study, one assessing multicultural discussions in supervision and another quantifying their multicultural training experience. Data analyses included multiple hierarchical regression, utilizing the Hayes PROCESS macro. Multicultural discussions in supervision moderated the relationship between the supervisory working alliance and multicultural counseling competence, but did not significantly moderate the relationship between multicultural training and multicultural counseling competence. Findings suggest that when multicultural discussions in supervision are positive, they significantly increases the strength of the relationship between good supervisory working alliance and multicultural counseling competence in psychology trainees. The findings may inform supervision practices and improve multicultural counseling competence in psychology graduate student trainees.
Emergent Functionality and Controllability in Beamforming System
This dissertation presents beamforming designs. Using novel techniques and methods, the performance of the beamforming is improved on dual-band, tri-band, flexible function, tunable function in THz, and dynamic controllability on incident wave.
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.
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 be approximated by using a smooth curve. Three functional forms namely Arctangent curve, Hermite curve, and Bezier curve are used in approximating the thermal conductivity and volumetric heat capacity distributions in the FGMs. The use of Hermite and Bezier curves gives the flexibility to control the slope of the curve i.e. the thermal property distribution along the thickness of the sample. Two-layered samples with constant thermal properties and three layered samples in which one of the layer has varying thermal properties with respect to thickness are considered. The program is written in Fortran and several test runs are performed. Results ...
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 (i.e., body dissatisfaction, depression symptoms, low self-esteem, media internalization, and sexual minority identity) were unable to explain sufficient variance in over exercise behaviors in African American men. Results suggest ethnicity and sexual orientation are meaningful to the experience of disordered eating in men, and that underlying mechanisms may exhibit differing associative patterns across ethnic identity. Clinicians working with ethnically and sexually diverse male disordered eating populations may use the results to better inform treatment interventions and conceptualization. These findings also support the value of intersectional quantitative methodology and the limits of relying on single-axis identity as a predictive element.
Evaluation of a Behavior Skills Package to Teach Caregivers to Manage Disruptive Behavior during Medical and Dental Appointments
Adults with developmental disabilities that live in large residential settings experience complications due to problem behavior when attending routine medical/dental appointments. This may result in sedation for clients for even the most routine medical/dental appointments. The purpose of this project was to develop a comprehensive staff training program that incorporated best practices to teach direct-support professionals behavior management techniques and best practices for transporting clients to and from routine medical/dental appointments. 4 direct-support professionals at a large residential care facility participated in this project. Multiple probes were conducted utilizing standard role-play exercises to evaluate caregiver acquisition of 16 specific skills related to client information, best practices for client transport, and behavior management. The results indicated that behavior skills training (BST) resulted in caregiver acquisition of all 16 skills during role-play exercises.
Evaluation of Call Mobility on Network Productivity in Long Term Evolution Advanced (LTE-A) Femtocells
The demand for higher data rates for indoor and cell-edge users led to evolution of small cells. LTE femtocells, one of the small cell categories, are low-power low-cost mobile base stations, which are deployed within the coverage area of the traditional macro base station. The cross-tier and co-tier interferences occur only when the macrocell and femtocell share the same frequency channels. Open access (OSG), closed access (CSG), and hybrid access are the three existing access-control methods that decide users' connectivity to the femtocell access point (FAP). We define a network performance function, network productivity, to measure the traffic that is carried successfully. In this dissertation, we evaluate call mobility in LTE integrated network and determine optimized network productivity with variable call arrival rate in given LTE deployment with femtocell access modes (OSG, CSG, HYBRID) for a given call blocking vector. The solution to the optimization is maximum network productivity and call arrival rates for all cells. In the second scenario, we evaluate call mobility in LTE integrated network with increasing femtocells and maximize network productivity with variable femtocells distribution per macrocell with constant call arrival rate in uniform LTE deployment with femtocell access modes (OSG, CSG, HYBRID) for a given call blocking vector. The solution to the optimization is maximum network productivity and call arrival rates for all cells for network deployment where peak productivity is identified. We analyze the effects of call mobility on network productivity by simulating low, high, and no mobility scenarios and study the impact based on offered load, handover traffic and blocking probabilities. Finally, we evaluate and optimize performance of fractional frequency reuse (FFR) mechanism and study the impact of proposed metric weighted user satisfaction with sectorized FFR configuration.
Ex-Offender Reentry: An Analysis of Current Policies and Programs
Recidivism rates among ex-offender populations have consistently remained high. With over 600,000 ex-offenders being released from prison each year, reducing the rate of recidivism among the ex-offender class has become a highly debated issue. Ensuring ex-offenders successfully reintegrate into the community post-incarceration may help to reduce recidivism rates. Through a qualitative thematic analysis, this study examined various policies and program that may impact recidivism rates among ex-offenders. The policies and programs reviewed in this study were categorized among six main themes which were identified in prior literature as the most crucial elements needed for successful reintegration. The findings indicate that while many policy changes have been made to positively impact ex-offender reintegration by allowing initial access to services post-release from prison, more should be done to ensure ex-offenders actually receive needed services.
Examination of a Bi-Directional Relationship between Urgency and Alcohol Use
The proposed study examined whether negative urgency and positive urgency are dynamic traits that hold bi-directional relationships with binge and prolonged alcohol use across time. Individuals between the ages of 18-30 were recruited from Amazon Mechanical Turk (MTurk; n = 179) and university student (n = 66) pools. Participants completed three batteries of self-report assessments approximately 30 days apart, each containing measures assessing negative and positive urgency, as well as drinking frequency and binge behavior during the prior month. Latent variable cross-lagged panel models examined the effects of alcohol use from the previous month on negative and positive urgency while controlling for concurrent and autoregressive effects. Results of the current study indicated that for the full sample, there was not an effect for the influence of binge/prolonged drinking on either negative or positive urgency during the subsequent month. However, when examined separately by sample (Turkers vs. university) and gender (male vs. female), significant effects were found more for individuals who were Turkers, male, and/or heavy drinkers, suggesting that increases in positive and negative urgency at Time 2 could be partially explained by variance in drinking patterns at Time 1 for these individuals. However, these relationships were not replicated again between Time 2 and Time 3 due to a decrease in all drinking behaviors during these times. Lastly, the study found that while urgency scores were related to psychosocial problems and dependence symptoms associated with drinking, there was no evidence to support that urgency scores had substantial relationships to specific frequency and/or bingeing behavior across the overall sample, although positive urgency had support for a relationship with bingeing, particularly among heavily drinking men. Thus, while the primary findings did not indicate any effects for a general sample of young adults, the effects observed among heavy male drinkers in the present study ...
Examining the Influence of Visual Culture on a Saudi Arabian Child's Drawings
This study examines the ways visual culture influences a child's drawings. The child is my 9-year-old daughter Nada, who was born in Saudi Arabia and is a fourth-grade student temporarily living in the United States. The study uses qualitative methods of data collection and exploratory case study research design as a methodology. The data were analyzed in light of Althusser's theory of ideology, specifically the notion of interpellation, along with visual culture theories. In addition, gender performativity theory, specifically the work of Judith Butler, was used to consider gender issues when these concerns emerged from the study. Nada has been exposed to two diverse cultures, those of Saudi Arabia and the United States. Both cultures may impact Nada's interpretations of her visual surroundings in various ways. Therefore, recognizing and examining how she interacts with US visual culture might help to uncover how such interactions constitute the basis of her perceptions, identities, and critical thinking. Drawing is not only a means of self-expression but also an important function of communication, identity formation, and represents possible ways of being in the world that are related to culture, community, and society as a whole. The study begins with the premise that there is a gap in understanding between the importance of visual culture and its insufficient application in Saudi Arabian art education. The implications of this study may be informative for Saudi Arabian educators, individuals, or groups interested in visual culture education and children's drawings; potentially, the Saudi Arabian educational system may also use this study to enhance its appreciation of the impact of visual culture on the creation of art and knowledge.
The Experience of Language Use for Second Generation, Bilingual, Mexican American, 5th Grade Students
There is a paucity of research regarding language use among bilingual clients, particularly with Latino children. In order to provide culturally sensitive counseling for bilingual, Spanish-speaking, Latino children it is important to understand their experience of language use. The purpose of this study was to investigate how second generation, bilingual, Mexican American, 5th grade students experience language use in the two languages with which they communicate. I employed a phenomenological method to data collection and analysis and conducted semi-structured individual and group interviews with three boys and five girls (N = 8). Analysis of the individual and group interviews yielded four main structures: (a) dominant language determined perception of developing dual selves, (b) speaking two languages useful in language brokering and upward mobility, (c) dominant language determined experience of language use, and (d) language use and aspects of the complementarity principle. Findings from this study suggest that bilingual Latino children experience language brokering for their parents as difficult, speaking two languages as useful regarding upward mobility, and that their dominant language influences various aspects of their daily experiences such as with whom and where they use each language. Limitations to this research include insufficient time building rapport with participants and challenges related to unexplored dimensions of bilingualism in the counseling research literature. An overarching implication for future research, clinical practice, and counselor education is that bilingualism, language use, and the depth of experience of Latino children are largely understudied topics.
Exploring the Process of Developing a Glocally Focused Art Curriculum for Two Communities
The world is becoming progressively interconnected through technology, politics, culture, economics, and education. As educators we strive to provide instruction that prepares students to become active members of both their local and global communities. This dissertation presents one possible avenue for engaging students with art and multifaceted ideas about culture, community, and politics as it explores the possibilities for creating a community-based, art education curriculum that seeks a merger of global and local, or "glocal" thinking. Through curriculum action research, I explored the process of writing site-specific curriculum that focuses on publicly available, local works of art and encourages a connection between global experiences and local application. I have completed this research for two communities, one in Ohio and one in Texas, and investigated the similarities and differences that exist in the process and resulting curriculum for each location. Through textual analysis, interviews, curriculum writing, and personal reflections, I identified five essential components of a community-based, glocal art education curriculum: flexibility, authenticity, connectedness, glocal understandings, and publicly available art. Additionally, I developed a template for writing glocally focused, community-based art education curriculum and produced completed curricular units for each of the communities. Finally, I have made suggestions for the future study and development of glocally focused, art education curriculum.
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 of prospectors has a weaker relationship with absorptive capacity than other type of firms.
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. WHIPC also served as a mode of human and animal sacrifice (Chapter 6). Regarding the treatment of the body, several examples reveal cultural contexts for nudity and bone-breaking, which often accompanied WHIPC (Chapter 7). In the frequent instances where burial was forbidden a second penalty, played out in the afterlife, was intended. Contrary to some modern assertions, implementation of crucifixion was not limited by gender or status (Chapter 8). WHIPC often occurred along roads or on hills and mountains, or in in liminal spaces such as doorways, cliffs, city gates, and city walls (Chapter 9). From the Sumerians to the ...
Facets of Positive Affect and Risk for Bipolar Disorder: Role of the Behavioral Activation System
Bipolar disorder is characterized by disruptions in mood and affect that occur not only during mood episodes, but during euthymic periods as well. At the same time, sensitivity of the behavioral activation system (BAS) has been implicated in the disorder and is a risk marker for it. Less clear is the relationship between BAS sensitivity and positive affect, particularly lower level facets of positive affect. The aim of the present study was to examine the relationship between positive affect and vulnerability for mania as assessed using BAS sensitivity. Specifically, the link between daily levels and fluctuations of positive affect and baseline BAS sensitivity was examined. Following the hierarchical model of affect, this study also assessed the relationship between BAS sensitivity and the distinct facets of positive affect. Finally, this study examined whether BAS sensitivity moderates associations between daily rewards and positive affect. Undergraduates (N = 265) from a large university in the South were recruited to complete measures of BAS sensitivity, affect, and mood symptoms at baseline. Using ecological momentary assessment (EMA), participants completed daily surveys assessing affect and engagement with rewarding situations. An exploratory factory analysis revealed a four factor structure of positive affect, consisting of Serenity, Joviality, Attentiveness, and Self-Assurance. Greater daily levels of overall positive affect, as well as the lower order facets of Joviality, Self-Assurance, and Attentiveness, were predicted by heightened BAS sensitivity. In contrast, the facet of Serenity demonstrated minimal associations with BAS sensitivity. The study findings support a multi-faceted structure of positive affect and suggest that certain facets may be more closely related to risk for bipolar disorder. Specifically, Joviality and Self-Assurance may represent maladaptive forms of positive affect, whereas Serenity may function as a protective element against bipolar disorder.
"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.
Furyous Female Just-Warriors of Post-Apocalypse and Dystopia
The intention of this thesis is to identify and analyze the precise shift from an exploitative archetype to an empowered representation of women warriors, to identify the arena in which male and female characters are given equal agency in the context of war, and finally explore the key characteristics that make up an empowered female hero. This thesis also addresses the sociocultural nature of the warrior woman archetype as it pertains to the current role of women in the military. The films analyzed in this thesis are all post 9/11 films; a fact that links them culturally to the wars in Iraq and Afghanistan. In recent years, numerous milestones have been reached for women in the armed services, especially for those women in combat positions. For the first time in American history women are being recognized for their active role as soldiers in combat. Therefore, it is valid to consider the correlation between seeing women as military professionals, fighting alongside male soldiers in these films, and the cultural impact of female combat soldiers. This aspect of the thesis also imbues the female just-warrior archetype with a legitimate history, mythology, and current cultural reference; which is essential to the visibility of female combat soldiers of the 21st century.
The Generation of Recombinant Zea mays Spastin and Katanin Proteins for In Vitro Analysis
Plant microtubules play essential roles in cell processes such as cell division, cell elongation, and organelle organization. Microtubules are arranged in highly dynamic and ordered arrays, but unlike animal cells, plant cells lack centrosomes. Therefore, microtubule nucleation and organization are governed by microtubule-associated proteins, including a microtubule-severing protein, katanin. Mutant analysis and in vitro characterization has shown that the highly conserved katanin is needed for the organization of the microtubule arrays in Arabidopsis and rice as well as in a variety of animal models. Katanin is a protein complex that is part of the AAA+ family of ATPases. Katanin is composed of two subunits, katanin-p60, a catalytic subunit and katanin-p80, a regulatory subunit. Spastin is another MT-severing protein that was identified on the basis of its homology to katanin. In animal cells, spastin is also needed for microtubule organization, but its functionality has not yet been investigated in plants. To initiate an exploration of the function of katanin-p60 and spastin in Zea mays, my research goal was to generate tools for the expression and purification of maize katanin-p60 and spastin proteins in vitro. Plasmids that express katanin-p60 and spastin with N-terminal GST tags were designed and constructed via In-Fusion® cloning after traditional cloning methods were not successful. The constructs were expressed in E. coli, then the recombinant proteins were purified. To determine if the GST-tagged proteins are functional, ATPase activity and tubulin polymerization assays were performed. While both GST-katanin-p60 and GST-spastin hydrolyzed ATP indicating that the ATPase domains are functional, the results of the tubulin polymerization assays were less clear and further experimentation is necessary.
Historical Memory and Ethics in Spanish Narrative
This study traces the current status of Spanish ethics as seen through the optics of historical memory. Starting from the Spanish Civil War in 1936, the thesis relates contemporary themes to their proposed origin throughout three additional distinctive eras of the 20th and 21st century in Spain: 1982-1996 (Socialist Spain), 1997-2010 (Post-modern Spain), and 2011-present (current Spain). Spanish narratives ranging from Los Abel by Matute, La magnitud de la tragedia by Monzó, "Fidelidad" of Ha dejado de llover by Barba and Las fosas de Franco by Silva are contextualized through their ethical architecture, in accordance with their socio-political context, and relationship to past historical traumas. This work proposes that the themes of anticlericalism, the pursuit of social equality, anti bureaucracy, and political distrust are trends culminating from Kohlberg's third level of morality. The thesis aims to be an exposition and legitimization of different ethical schemas that might otherwise be polarized as wrong and inferior by others.
Homologs of Mammalian Lysosomal Lipase in Arabidopsis and Their Roles in Lipid Droplet Dynamics
Lipid droplets (LDs) are organelles with many functions in cells and numerous protein interactors facilitate their biogenesis, maintenance, and turnover. The mammalian lipase responsible for LD turnover during lipophagy, LipA, has two candidate homologs in Arabidopsis: MPL1 and LIP1. One or both of these plant homologs may function in a similar manner to mammalian LipA, providing an LD breakdown pathway. To test this hypothesis, wild type (WT) Arabidopsis plants, MPL1 over-expressing (OE) mutants, and T-DNA insertion mutants of MPL1 (mpl1) and LIP1 (lip1) were examined for LD phenotypes in normal conditions and in environments where LD numbers are known to fluctuate. Plants to be imaged by confocal microscopy were exposed to heat stress and wounding to increase LD accumulation, senescence was induced in leaves to deplete lipids, and LDs were imaged throughout the day/night period to observe their diurnal regulation. The mutation of both MPL1 and LIP1 lead to an increase in LDs within the leaf mesophyll cells, although the spatial distribution of the LDs differed between the two mutants. mpl1 mutants had disrupted diurnal regulation of their LDs, but lip1 mutants did not. Alternately, lip1 mutants retained LDs during dark-induced senescence, and mpl1 mutants did not. Together these results suggest that MPL1 and LIP1 are likely both important for LD dynamics; however they appear have roles in different aspects of LD accumulation and turnover.