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Evaluating Process Variables in Acceptance and Commitment Therapy (open access)

Evaluating Process Variables in Acceptance and Commitment Therapy

Acceptance and commitment therapy (ACT) was developed to specifically target experiential avoidance (EA) rather than any specific diagnostic category. A functional ACT manual was presented and used to treat diagnostically diverse clients in a large sliding fee-for-service training clinic. A multiple baseline across participants and behaviors research design was used to evaluate session-by-session changes in EA, values identification, valued action, and clinical distress. The Acceptance and Action Questionnaire-2 (AAQ2), Valued Living Questionnaire (VLQ), and Outcome Questionnaire (OQ-45) were given to measure processes and outcomes given the functional ACT model presented in the introduction to the paper. Baseline included the Structured Clinical Interview for DSM-IV Axis I and II Disorders given across 2-5 50- minute sessions. The treatment phase consisted of 7-10 50-minute sessions. Participants were 10 clients. Four participants completed sufficient treatment sessions (4-9) to test the study hypotheses. Participants generally improved across time, but most improvements could not be attributed to the functional application of ACT due to changes during baseline for AAQ, VLQ-Consistency, and OQ-45. VLQ-Importance significantly improved for all participants given ACT.
Date: August 2011
Creator: Vander Lugt, Amanda Adcock
System: The UNT Digital Library
Galileo's Eyeglass: An Orchestral Work Celebrating the Discovery of the Moons of Jupiter and the Rings of Saturn (open access)

Galileo's Eyeglass: An Orchestral Work Celebrating the Discovery of the Moons of Jupiter and the Rings of Saturn

Galileo's Eyeglass is a celebratory work for full orchestra with standard instrumentation commemorating Galileo Galilei's discoveries of the four largest moons of Jupiter and the rings of Saturn in 1610. The composition is approximately 14 minutes in duration, and although divided thematically into four parts, the music is continuous. The work exhibits primarily a blend of contemporary styles and compositional elements, yet it is rooted in traditional tonality; furthermore, the piece is interspersed with references to Galileo's life and times, including quotations of a toccata composed by the scientist's brother, Michelangelo Galilei, transcribed from lute tablature. Chapter 1 of Part 1 investigates relevant historical threads extracted from the backdrop of Galileo's life, from reflections on the events that shape the musical program, to the selection and preparation of the period music composed by Galileo's brother. Chapter 2 discusses specific musical components of Galileo's Eyeglass, including form, musical quotations, motivic and thematic material, harmonic language, orchestration, and notation. Chapter 3 examines the principal philosophical themes behind the composition, including expressions of victory of a life well lived in spite of many obstacles. Part 2 contains the orchestral score.
Date: August 2011
Creator: Walls, Jay Alan
System: The UNT Digital Library
Accuracy and Efficiency in Computational Chemistry: The Correlation Consistent Composite Approach (open access)

Accuracy and Efficiency in Computational Chemistry: The Correlation Consistent Composite Approach

One of the central concerns of computational chemistry is that of efficiency (i.e. the development of methodologies which will yield increased accuracy of prediction without requiring additional computational resources – RAM, disk space, computing time). Though the equations of quantum mechanics are known, the solutions to these equations often require a great deal of computing power. This dissertation primarily concerns the theme of improved computational efficiency (i.e. the achievement of greater accuracy with reduced computational cost). Improvements in the efficiency of computational chemistry are explored first in terms of the correlation consistent composite approach (ccCA). The ccCA methodology was modified and this enhanced ccCA methodology was tested against the diverse G3/05 set of 454 energetic properties. As computational efficiency improves, molecules of increasing size may be studied and this dissertation explored the issues (differential correlation and size extensivity effects) associated with obtaining chemically accurate (within 1 kcal mol-1) enthalpies of formation for hydrocarbon molecules of escalating size. Two applied projects are also described; these projects concerned the theoretical prediction of a novel rare gas compound, FKrOH, and the mechanism of human glutathione synthetase’s (hGS) negative cooperativity. The final work examined the prospect for the parameterization of the modified embedded atom …
Date: August 2011
Creator: Wilson, Brent R.
System: The UNT Digital Library
An Examination of the Relationship Between Values, Family Environment, and Risk Behaviors Among College Students (open access)

An Examination of the Relationship Between Values, Family Environment, and Risk Behaviors Among College Students

The purpose of this study was to examine the roles that values and the family environment play in young adult engagement in risky behavior. One hundred seventy-two male and female college students between the ages of 18-25 completed a demographics questionnaire, the Aspirations Index which measures seven life-goal contents that represent different values, the Cognitive Appraisal of Risky Events that assesses young adults’ perceptions of the risks and benefits associated with involvement in risky activities as well as past involvement in risky behaviors and the Family Environment Scale to assess participants' perceptions of their current family environment. A series of regression analyses were then used to assess the relationship between three dimensions of the family environment and risky behavior involvement and the relationship between participants' intrinsic and extrinsic values and perceived positive consequences and negative consequences of risky behavior. Results from this study supported the idea that certain dimensions of the family environment are related to risk-taking behavior in emerging adults; however, contrary to previous research, the relationship dimension of the family environment was not predictive of young adult risk-taking. Moreover, family activities that communicate family values did not contribute any additional information to the prediction of risk-taking behavior. Findings …
Date: August 2011
Creator: Wilson, Jamie D.
System: The UNT Digital Library
Family Variables in the Cultural and Psychological Adjustment of Third Culture Kids (open access)

Family Variables in the Cultural and Psychological Adjustment of Third Culture Kids

Third culture kids are children raised in globally mobile families who have left their culture of origin to reside in a host culture. As this relocation occurs during childhood, the child combines the values, traditions, and norms of both cultures thereby creating a third culture, a unique culture created by the parent’s integration of the home culture, the host culture, and the domains of the organizational culture. Emotional Stability was found to mediate the relationship between family of origin Expression and Composite distress. Though this was the only hypothesized model that was supported, other interesting findings include that when participants were categorized by industry, statistically significant differences were found between Military, Missions, and the Other group on all of the scales. These differences are likely due to a cohort effect, given that the military family mean age was as much as twenty years higher than the other groups.
Date: August 2011
Creator: Wilson, Jennifer L.
System: The UNT Digital Library
Orchestral Etudes: Repertoire-Specific Exercises for Double Bass (open access)

Orchestral Etudes: Repertoire-Specific Exercises for Double Bass

In this project, frequently required double bass orchestral audition excerpts as well as their individual technical difficulties are identified. A survey of professional double bass players and teachers currently and formerly employed by major orchestras, universities, and conservatories have participated to validate the importance of four of the most frequently required orchestral excerpts: Ludwig van Beethoven’s Symphony No. 9, Mvt. 4, and Symphony No. 5, Mvt. 3; Richard Strauss’ Ein Heldenleben; and Wolfgang Amadeus Mozart’s Symphony No. 40, Mvt. 1. The survey respondents identified the primary and secondary technical concerns of each of the four excerpts. I have created technical studies, or etudes, that specifically address these difficulties and help fill a literary gap within the existing pedagogical resources for the double bass.
Date: August 2011
Creator: Unzicker, Jack Andrew
System: The UNT Digital Library
Interfacial Electrochemistry of Copper and Spectro-Electrochemical Characterization of Oxygen Reduction Reaction (open access)

Interfacial Electrochemistry of Copper and Spectro-Electrochemical Characterization of Oxygen Reduction Reaction

The first part of this dissertation highlights the contents of the electrochemical characterization of Cu and its electroplating on Ru-based substrates. The growth of Ru native oxide does diminish the efficiency of Cu plating on Ru surface. However, the electrochemical formed irreversible Ru hydrate dioxide (RuOxHy) shows better coverage of Cu UPD. The conductive Ru oxides are directly plateable liner materials as potential diffusion barriers for the IC fabrication. The part II of this dissertation demonstrates the development of a new rapid corrosion screening methodology for effective characterization Cu bimetallic corrosion in CMP and post-CMP environments. The corrosion inhibitors and antioxidants were studied in this dissertation. In part III, a new SEC methodology was developed to study the ORR catalysts. This novel SEC cell can offer cheap, rapid optical screening results, which helps the efficient development of a better ORR catalyst. Also, the SEC method is capable for identifying the poisoning of electrocatalysts. Our data show that the RuOxHy processes several outstanding properties of ORR such as high tolerance of sulfation, high kinetic current limitation and low percentage of hydrogen peroxide.
Date: August 2011
Creator: Yu, Kyle Kai-Hung
System: The UNT Digital Library
The Martial Arts of Medieval Europe (open access)

The Martial Arts of Medieval Europe

During the late Middle Ages and into the Renaissance, fighting books—Fechtbücher—were produced in northern Italy, among the German states, in Burgundy, and on the Iberian peninsula. Long dismissed by fencing historians as “rough and untutored,” and largely unknown to military historians, these enigmatic treatises offer important insights into the cultural realities for all three orders in medieval society: those who fought, those who prayed, and those who labored. The intent of this dissertation is to demonstrate, contrary to the view of fencing historians, that the medieval works were systematic and logical approaches to personal defense rooted in optimizing available technology and regulating the appropriate use of the skills and technology through the lens of chivalric conduct. I argue further that these approaches were principle-based, that they built on Aristotelian conceptions of arte, and that by both contemporary and modern usage, they were martial arts. Finally, I argue that the existence of these martial arts lends important insights into the world-view across the spectrum of Medieval and early Renaissance society, but particularly with the tactical understanding held by professional combatants, the knights and men-at-arms. Three treatises are analyzed in detail. These include the anonymous RA I.33 Latin manuscript in the Royal …
Date: August 2011
Creator: Price, Brian R.
System: The UNT Digital Library
Stable Book-Tax Differences, Prior Earnings and Earnings Persistence (open access)

Stable Book-Tax Differences, Prior Earnings and Earnings Persistence

This study resolves divergent prior findings relating book-tax differences to future earnings, determines whether prior literature has missed relationships between different types of book-tax differences and pre-tax and/or after-tax income, and investigates prior earnings as a factor contributing to the observed relationships. As past research has found that some firms have large book-tax differences over several years, this study separates these firms with large stable book-tax differences from others with large book-tax differences (non-stable) when investigating the link between large book-tax differences and future earnings. Finally, this study investigates whether the relationship between book-tax differences and future earnings reflects information about prior earnings and finds that prior earnings growth explains much of the lower persistence found for firms with large book-tax differences.
Date: August 2011
Creator: Racca, Joshua C.
System: The UNT Digital Library
Mythic Archaeologies: The Impact of Visual Culture on the Art and Identity of Four Hopi Artists (open access)

Mythic Archaeologies: The Impact of Visual Culture on the Art and Identity of Four Hopi Artists

This qualitative critical ethnography examines how visual culture impacted the identity and art of four Hopi artists. Sources of data included a personal journal, artists’ interviews, group discussion, art work interpretations, and historical research of Hopi art, visual culture, and issues of native identity. In particular, my analysis focused on issues of power / knowledge relationships, identity construction, and the artist as co-constructor of culture through personal narratives. Implications for art education centered on the concept of storytelling through mythic archaeology situated in identities of past, present, and future.
Date: August 2011
Creator: Santos, Lori J.
System: The UNT Digital Library
Early Predictors of Early Freshman Year Attrition in Female Hispanic Students (open access)

Early Predictors of Early Freshman Year Attrition in Female Hispanic Students

The Texas Hispanic population is projected to grow to 18.8 million, almost tripling its number within the state, in only 30 years. This rapid growth is a concern for Texas higher education because this group has traditionally been under-represented in colleges and universities. Also, according to national, state, and local data, Hispanic students are retained at a lower rate than are other ethnic groups. Because of lower retention rates for Hispanic students and because the majority of Hispanic college students are female, an increasing number of Hispanic women are heads of households. Studying the attrition rates of Hispanic females could provide a better understanding of how the state can improve both the participation and retention rates of this population. This study utilized descriptive statistics and regression analysis to identify the correlations between and among the dependent variable of attrition and independent variables derived from (1) pre-college survey responses measuring college expectations and (2) early-first semester survey responses measuring actual college experience. Institutional data were used to confirm enrollment status at the beginning of the second semester. The sample of the study was all female, full-time, first-time-in college student survey respondents attending a public 4-year institution in Texas. This number included …
Date: August 2011
Creator: Speed, Heather Faye
System: The UNT Digital Library
High Efficiency High Power Blue Laser by Resonant Doubling in PPKTP (open access)

High Efficiency High Power Blue Laser by Resonant Doubling in PPKTP

I developed a high power blue laser for use in scientific and technical applications (eg. precision spectroscopy, semiconductor inspection, flow cytometry, etc). It is linearly polarized, single longitudinal and single transverse mode, and a convenient fiber coupled continuous wave (cw) laser source. My technique employs external cavity frequency doubling and provides better power and beam quality than commercially available blue diode lasers. I use a fiber Bragg grating (FBG) stabilized infrared (IR) semiconductor laser source with a polarization maintaining (PM) fiber coupled output. Using a custom made optical and mechanical design this output is coupled with a mode matching efficiency of 96% into the doubling cavity. With this carefully designed and optimized cavity, measurements were carried out at various fundamental input powers. A net efficie ncy of 81 % with an output power of 680 mW at 486 nm was obtained using 840 mW of IR input. Also I report an 87.5 % net efficiency in coupling of blue light from servo locked cavity into a single mode PM fiber. Thus I have demonstrated a total fiber to fiber efficiency of 71% can be achieved in our approach using periodically poled potassium titanyl phosphate (PPKTP). To obtain these results, all …
Date: August 2011
Creator: Danekar, Koustubh
System: The UNT Digital Library
The Use of Evidence-based Practices in the Provision of Social Skills Training for Students with Autism Spectrum Disorders: a National Survey of School Psychologists' Training, Attitudes, and Practices (open access)

The Use of Evidence-based Practices in the Provision of Social Skills Training for Students with Autism Spectrum Disorders: a National Survey of School Psychologists' Training, Attitudes, and Practices

The purpose of this exploratory study was to examine school psychologists' use of evidence- based practices (EBP), in general, and more specifically in the area of social skills training (SST) for students with autism spectrum disorders (ASD). Study participants, consisting of 498 school psychologists from across the nation, participated in an online survey that gathered information about their training, attitudes, and practices. The frequency with which specific EBP practices for social skills training for students with ASD was examined, as was prediction of use of these practices. Multiple-regression analyses revealed multiple independent variables that were predictors for overall use of EBP. Results indicated that over half of the participants provide SST for students with ASD. Although the majority of participants indicated that their graduate program included at least one course with information about ASD and EBP practices, in general, nearly half indicated that their coursework did not include any courses that directly addressed social skills training for students with ASD. Confirmatory factor analysis (CFA) was used to determine the extent to which the data fit the factor model. Participants' perception of the importance placed on EBP by their school district, scores on the openness subscale of the Evidence Based Practices …
Date: August 2011
Creator: Austin, Jennifer E.
System: The UNT Digital Library