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1,345 - 1,364 of
1,364
Designing a Library Data Service
Presentation for the Cross Timbers Library Collaborative (CTLC) Scholarly Communications and Digital Curation (SCDC) Affinity Group 2014 Winter Meeting. This presentation discusses designing a library data service.
Date:
December 12, 2014
Creator:
Gulliford, Brad
Object Type:
Presentation
System:
The UNT Digital Library
Finding Out on Facebook: a Qualitative Analysis of Adolescents’ Experiences Following a Suicide Cluster
Suicide clusters have been identified in many populations; however, research exploring the role of online communication in the aftermath of a suicide cluster is extremely limited. This study used the Consensual Qualitative Research method to analyze interviews of ten high school students following a suicide cluster in a small suburban school district. Interviewee’s responses were organized into 4 domains: the suicide, impact, perceptions of school environment, and recovery. The role of social networking emerged as a common theme across domains, suggesting broad relevance to adolescents’ experience following the suicide of a peer. Implications for clinical intervention and research are discussed.
Date:
August 2014
Creator:
Heffel, Carly J.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Apology and Forgiveness in Couples
Following a transgression, interpersonal forgiveness is one strategy used to restore harmony between the victim and offender. Research also suggests that forgiveness can promote psychological and physical health. Research has shown that an apology from the offender may facilitate the forgiveness process. The majority of studies suggest that when a victim receives an apology, they experience higher levels of forgiveness toward their offender. The purpose of this thesis was to explore the association between apology and forgiveness in a sample of adults and undergraduate students (N = 803). The results are organized in three sections. First, I found a positive relationship between apology and forgiveness, replicating prior research. Second, I created a new measure of transgression severity, and provided evidence of internal consistency, construct validity, and criterion-related validity for this measure. Third, I tested two variables hypothesized to moderate the association between apology and forgiveness. First, there was some evidence that perceived offender humility moderated the association between simple apology and forgiveness. Offenders who were perceived as being more humble when providing a simple apology were granted more forgiveness than their less humble counterparts. Second, there was some evidence that transgression severity moderated the association between a complete apology and …
Date:
August 2014
Creator:
Reyna, Samuel H.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Supervisors, Trainees, and Client Outcomes in the Training Clinic: Toward an Understanding of Relational Factors
Estimates of healthy years of life lost due to mental illness are increasing, calling greater attention to the provision of effective psychotherapy services. Hypothesized to be the key mechanism through which competencies are developed in trainee clinicians and subsequent client outcomes, clinical supervision is deserving of greater attention. Drawing on a sample of supervisors, trainees, and clients from a training clinic, the present study sought to clarify the relational factors that could facilitate the asserted supervisor-client outcome link and to better understand if, and how, clinical supervisors influence client outcomes. With the exception of supervisor openness to experience, supervisor factors did not predict meaningful variance in client outcomes. Trainee extraversion and openness to experience predicted significant variance in leader-member exchange and supervisory working alliance. Dispositional trainee factors (e.g., personality) appear to impact trainee perceptions of the supervisory relationship. Implications for training and development are discussed, in addition to directions for future research.
Date:
August 2014
Creator:
Rieck, Troy P.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Biopsychosocial Model of Dietary Restraint in Early Adolescent Boys
The current study replicated and extended previous research by examining empirically the direct and indirect influence of social pressure (to lose weight and diet), social body comparisons, internalization of the thin ideal, body dissatisfaction, self-esteem, and cardiorespiratory fitness on self-reported dietary restraint in a diverse sample of middle school boys (n = 663); Mage was 12.49 years (SD = .99). With IRB approval, parental consent, and child assent, during annual FITNESSGRAM testing, participants completed questionnaires that measured the study’s constructs. Cardiorespiratory fitness (CRF) was determined by the boys’ performance on the PACER running test. The proposed model was examined using structural equation modeling (SEM). Because measures demonstrated univariate and multivariate normality, the maximum likelihood procedure within EQS to examine the measurement and structural models was used. Fit was determined using a two-index procedure. Participants were randomly split into exploratory (Sample A - 331) and confirmatory (Sample B - 332) samples. For Sample A, the measurement and structural models fit the data well. The structural model was confirmed in Sample B, with the same paths being significant and nonsignficant. For both Sample A and Sample B, 35% of the Dietary Restraint variance was explained. These findings support a multifactorial approach to …
Date:
August 2014
Creator:
Mitchell, Sara H.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Belfast: Perspectives of a City
This thesis film is an examination of my evolving perspectives and understanding of my Irish heritage as I travel to the city of Belfast, Northern Ireland. Through the course of a year and a half, I traveled to Belfast to explore the modern state of the sectarian conflicts between the Catholic and Protestant communities. Through the use of personal reflection, historical research, interviews with local residents, and on-location experiential learning, I began to learn not only about the modern state of Belfast and its economic and social climate, but also about the complexities of personal cultural identification and the concept of “truth” and “mutual guilt” when associated with acts of violence. With the use of the short documentary as the medium of choice, I am able to relay to audiences not only my own personal reflection of identity and history, but then allow them to reflect on their own perspectives as well, helping to create sincere moments of personal thought and reflections.
Date:
May 2014
Creator:
Nelson, Andrew J.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Athletic Trainers and Sport Psychology: Knowledge, Experience and Attitudes
Certified athletic trainers (ATCs) play a unique role in sport environments as the primary medical staff available to athletes. Thus, ATCs are well positioned to oversee athletes’ physical and psychological well-being. Although sport psychologists (SPs) have been identified as a potential resource for ATCs, previous studies have reported a lack of collaboration between SPs and ATCs. This study aimed to (a) examine ATCs’ views regarding professional roles for both ATCs and SPs, (b) explore ATCs’ referral behaviors, (c) evaluate ATCs belief in the credibility of sport psychology across demographic (i.e., gender, age) and experiential variables (i.e., access to SPs), and (d) examine ATCs’ involvement in sport psychology. Four hundred ninety-six ATCs (265 men, 231 women) completed and returned the questionnaire. ATCs viewed assisting in the psychological recovery of athletes as the most acceptable professional role for fellow ATCs; aiding in the psychological recovery of injured athletes and teach mental skills were identified by ATCs as the most appropriate roles for SPs. In considering an athlete experiencing interpersonal difficulties (e.g., relationship problems), a mixed design ANOVA revealed a ATC sex by referral option interaction; female and male ATCs indicated they would likely refer the athlete to a counselor/therapist, followed by a …
Date:
May 2014
Creator:
Ramaeker, Joseph P.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Computational Methodology for Addressing Differentiated Access of Vulnerable Populations During Biological Emergencies
Mitigation response plans must be created to protect affected populations during biological emergencies resulting from the release of harmful biochemical substances. Medical countermeasures have been stockpiled by the federal government for such emergencies. However, it is the responsibility of local governments to maintain solid, functional plans to apply these countermeasures to the entire target population within short, mandated time frames. Further, vulnerabilities in the population may serve as barriers preventing certain individuals from participating in mitigation activities. Therefore, functional response plans must be capable of reaching vulnerable populations.Transportation vulnerability results from lack of access to transportation. Transportation vulnerable populations located too far from mitigation resources are at-risk of not being able to participate in mitigation activities. Quantification of these populations requires the development of computational methods to integrate spatial demographic data and transportation resource data from disparate sources into the context of planned mitigation efforts. Research described in this dissertation focuses on quantifying transportation vulnerable populations and maximizing participation in response efforts. Algorithms developed as part of this research are integrated into a computational framework to promote a transition from research and development to deployment and use by biological emergency planners.
Date:
August 2014
Creator:
O'Neill, Martin Joseph, II
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Synthesis Strategies and a Study of Properties of Narrow and Wide Band Gap Nanowires
Various techniques to synthesize nanowires and nanotubes as a function of growth temperature and time were investigated. These include growth of nanowires by a chemical vapor deposition (CVD) system using vapor-liquid-solid (VLS) growth mechanism and electro-chemical synthesis of nanowires and nanotubes. Narrow band gap InSb Eg = 0.17 eV at room temp) nanowires were successively synthesized. Using a phase diagram, the transition of the nanowire from metallic- semiconducting- semi-metallic phase was investigated. A thermodynamic model is developed to show that the occurrence of native defects in InSb nanowires influenced by the nanowire growth kinetics and thermodynamics of defect formation. Wide band gap ZnO (Eg = 3.34 eV) and In2O3 (3.7 eV) were also synthesized. ZnO nanowires and nanotubes were successfully doped with a transition metal Fe, making it a Dilute Magnetic Semiconductor of great technological relevance. Structural and electronic characterizations of nanowires were studied for different semiconducting, metallic and semi-metallic nanowires. Electron transport measurements were used to estimate intrinsic material parameters like carrier concentration and mobility. An efficient gas sensing device using a single In2O3 nanowire was studied and which showed sensitivity to reducing gas like NH3 and oxidizing gas like O2 gas at room temperature. The efficiency of the …
Date:
May 2014
Creator:
Sapkota, Gopal
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Sustainable Energy Solutions for Water Purification Applications: Municipal and Industrial Case Studies
In several areas around the world, clean water is a precious asset that at anytime, and mainly due to circumstances of weather and climate, can become scarce. Mainly in the dry and remote places, people suffer with lack of water. A solution for this suffering can be a water desalination system, which makes water potable and usable for industry. That solution inherently, brings the problem of power requirement, which is sometimes arduous to accomplish in such remote areas of difficult access and long distances to overcome to build the infrastructure required to operate an electric power plant. Texas and the USA also face this scenario for many regions, for which the government has been creating some programs and driving forward incentives, looking for solutions to support water desalination. Water desalination has future applications for municipalities water-consuming or for arid and remote regions, as well as for industries that rely on heavy water usage, such as natural gas drilling operations, for which millions of gallons are trucked overland to the site and also hauled away afterwards, when the waste water produced must be treated. This thesis created the concept of autonomy for water desalination plants replacing the actual power supply from …
Date:
May 2014
Creator:
Mira, Sebastião Bittencourt de
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Socioeconomic Status and Prosperity Belief in Guatemala
A popular belief in the exploding Pentecostal movement in the global South is the idea that if an individual has enough faith, God will bless them with financial prosperity. Although historically Pentecostalism has been identified as a religion of the poor, this study examines recent arguments that the current Pentecostal movement in Guatemala is a religion of the socially mobile middle and elite classes. Data from the Pew Forum on Religious and Public Life’s 2006 survey Spirit and Power: Survey of Pentecostals in Guatemala is used to conduct a logistic regression, in order to measure the effects of socioeconomic status on adherence to prosperity belief. Results suggest that, contrary to the current literature on Guatemalan Pentecostalism, prosperity belief is not necessarily concentrated among the upwardly mobile middle and upper classes, but rather is widely diffused across social strata, and in particular, among those that have lower levels of education. These findings have implications for the study of Pentecostalism in Guatemala and in the global South in general.
Date:
May 2014
Creator:
Johnson, Lindsey A.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Interfacial Characterization of Chemical Vapor Deposition (Cvd) Grown Graphene and Electrodeposited Bismuth on Ruthenium Surface
Graphene receives enormous attention owing to its distinctive physical and chemical prosperities. Growing and transferring graphene to different substrates have been investigated. The graphene growing on the copper substrate has an advantage of low solubility of carbon on the copper which allow us to grow mostly monolayer graphene. Graphene sheet of few centimeters can be transferred to 300nm silicon oxide and quartz crystal pre-deposited with metal like Cu and Ru. Characterization of the graphene has been done with Raman and contact angle measurement and recently quartz crystal microbalance (QCM) has been employed. The underpotential deposition (UPD) process of Bi on Ru metal surface is studied using electrochemical quartz crystal microbalance (EQCM) and XPS techniques. Both Bi UPD and Bi bulk deposition are clearly observed on Ru in 1mM Bi (NO3)3/0.5M H2SO4. Bi monolayer coverage calculated from mass (MLMass) and from charge (MLCharge) were compared with respect to the potential scanning rates, anions and ambient controls. EQCM results indicate that Bi UPD on Ru is mostly scan rate independent but exhibits interesting difference at the slower scan. Bi UPD monolayer coverage calculated from cathodic frequency change (ΔfCathodic) is significantly smaller than the monolayer coverage derived from integrated charge under the cathodic …
Date:
May 2014
Creator:
Abdelghani, Jafar
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Krzysztof Penderecki’s Divertimento/suite for Cello Solo (1994-2013): a Stylistic Analysis and Performance Guide
Penderecki made a tremendous variety of contributions to the cello repertoire. His profound respect for tradition and for his past is deeply appreciated by both performers and audiences. In each individual composition, he explored the cello’s sonorous possibilities and created a new technical and musical palette for the instrument. He worked with legendary, world-renowned cellists who not only gave the premieres of his works but also established deep friendships with him. The Divertimento/Suite for Cello Solo (1994-2013), a compilation of miniature movements, each with its sophisticated structure, demonstrates Penderecki’s three compositional style periods. Baroque and Romantic elements in each movement are achieved within their style characteristics. Penderecki’s Divertimento/Suite for Violoncello Solo is composed of eight contrasting movements that were written during a nineteen-year period. The work is characterized by a Neo-Romantic aesthetic and utilizes the cello’s dark lyrical tones with a variety of timbre and tonal contrasts. The purpose of the present study is to create a practical performance guide to this important musical work with a detailed stylistic, textural, and motivic analysis of all eight movements. Although there are many published documents and analyses of Penderecki’s orchestral, choral, chamber and other solo pieces, the Divertimento/Suite for Cello Solo has …
Date:
May 2014
Creator:
Sturman, Esra
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Importance and Spatial Distribution of Phytophthora Ramorum Host Species in a Coast Redwood Forest
Phytophthora ramorum, an exotic forest pathogen known as ‘sudden oak death’ (SOD), has received considerable attention in recent years because of its effects on vegetation structure, composition, and fire disturbance regimes in western U.S. coastal forests. This research examines differences in the importance (e.g., density, dominance, and frequency) and distribution of five host species of P. ramorum–– Umbellularia californica (California bay laurel), Quercus agrifolia (coast live oak), Pseudotsuga menziesii (Douglas fir), Sequoia sempervirens (Coast redwood), and Arbutus menziesii (Madrone)––in Soquel, California. A stratified random sampling design was used to select 66 plots surrounding a managed forest edge in Soquel Demonstration State Forest. Vegetation measurements were conducted in summer 2013. In each plot, all trees ≥3 cm diameter at breast height (DBH) were identified to species, counted, and DBH, height, and canopy position measured. Leaf area index (LAI) of bay laurel was measured to quantify the amount of leaves available for pathogen dispersal with a LiCOR 2200 Plant Canopy Analyzer. In addition, morning (9:00 am) and afternoon (1:00 pm) photosynthetically active radiation (PAR) were quantified using a quantum light sensor. This paper examines the influence of environmental variables, including distance to edge, aspect, slope, and light availability on host species spatial …
Date:
May 2014
Creator:
Gray, Alicia E.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
How Cooperative Systems Respond to External Forces
Cooperative interactions permeate through nature, bringing about emergent behavior and complexity. Using a simple cooperative model, I illustrate the mean field dynamics that occur at the critical point of a second order phase transition in the framework of Langevin equations. Through this formalism I discuss the response, both linear and nonlinear, to external forces. Emphasis is placed on how information is transferred from one individual to another in order to facilitate the collective response of the cooperative network to a localized perturbation. The results are relevant to a wide variety of systems, ranging from nematic liquid crystals, to flocks and swarms, social groups, and neural networks.
Date:
May 2014
Creator:
Svenkeson, Adam
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
From Development of Semi-empirical Atomistic Potentials to Applications of Correlation Consistent Basis Sets
The development of the semi-empirical atomistic potential called the embedded atom method (EAM) has allowed for the efficient modeling of solid-state environments, at a lower computational cost than afforded by density functional theory (DFT). This offers the capability of EAM to model the energetics of solid-state phases of varying coordination, including defects, such as vacancies and self-interstitials. This dissertation highlights the development and application of two EAMs: a Ti potential constructed with the multi-state modified embedded atom method (MS-MEAM), and a Ni potential constructed with the fragment Hamiltonian (FH) method. Both potentials exhibit flexibility in the description of different solid-states phases and applications. This dissertation also outlines two applications of DFT. First, a study of structure and stability for solid-state forms of NixCy (in which x and y are integers) is investigated using plane-wave DFT. A ground state phase for Ni2C is elucidated and compared to known and hypothesized forms of NixCy. Also, a set of correlation consistent basis sets, previously constructed using the B3LYP and BLYP density functionals, are studied. They are compared to the well-known to the correlation consistent basis sets that were constructed with higher-level ab initio methodologies through computations of enthalpies of formation and combustion enthalpies. …
Date:
May 2014
Creator:
Gibson, Joshua S.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Gualterio Armando's 34 Canciones Hispanoamericanas Para Canto Y Piano: a Comprehensive Edition and an Analytical Study of the Work’s Thematic Unity, Chromaticism, and Use of Musical Quotations
During the 1930s, German-born music critic and composer Gualterio Armando (1887-1973), formerly known as Walter Dahms, set to music thirty-four poems by some of the most important Hispano-American poets from the latter part of the nineteenth and first half of the twentieth century. In these songs, Armando tries to capture the spirit and idiosyncrasy of Hispano-American cultures while incorporating his own musical aesthetics. Armando’s 34 Canciones Hispanoamericanas para Canto y Piano (34 Hispano-American songs for voice and piano) display an original sound and style full of rhythms, shapes, colors, and textures found in the music of various Hispanic cultures. Nevertheless, the essence of these songs is deeply rooted in nineteenth-century German musical traditions. This eclecticism results in unique works that developed and evolved as reflections of their creator’s musical psyche. This dissertation presents an analytical study of selected songs from the 34 Canciones. The study focuses on three compositional aspects: unity within song cycles, chromaticism, and the use of pre-existing musical material. Since only one of the 34 Canciones has ever been published, this document also includes a complete edition of the thirty-four songs. Additionally, a significant part of the research incorporates a biographical sketch of the composer.
Date:
May 2014
Creator:
Pérez Torres, René
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Employee Engagement: The Impact of Spiritual, Mental, Emotional and Physical Elements on the Relationship Between Employee Engagement and Behavioral Outcomes
Data were collected by an external company for a healthcare service firm interested in learning the job-related attitudes of their employees. Thus, archival data from 1,287 employees were collected for a different purpose. The survey consisted of 117 questions covering a broad range of constructs. Consequently, the items were used to derive effective measures of employee engagement and behavioral outcomes, as well as the emotional, mental, spiritual and physical dimensions. Exploratory and confirmatory factor analysis procedures were used to create scales reflecting these four factors. Interestingly, six scales emerged, logically linking to and further specifying the initial dimensions. These were Organizational Linkage, Manager Relationship, Job Fit, Job Clarity, Work Pressure, and Meaningful Work. To test the hypotheses, six separate regression equations were calculated, which statistically supported modification by each of the dimensions. However, statistical significance of the interactions resulted from having a large sample, given the actual association was too small to be meaningful (e.g., a contribution of 0.6% of the variance). As each of the dimensions had a main effect on the behavioral measure during hypothesis testing, exploratory regression equations were calculated to further understand the interrelationships. Of most interest was finding that in the presence of Engagement, the …
Date:
August 2014
Creator:
Zobal, Cheryl
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Research and Successful Promotion at UNT Libraries
Presentation describes how there are multiple paths to promotion as a librarian at UNT. It details the ways in which employees with UNT libraries are able to be successful in academia and higher education.
Date:
November 20, 2014
Creator:
Alemneh, Daniel Gelaw
Object Type:
Presentation
System:
The UNT Digital Library
The Hexagon, Volume 105, Number 4, Winter 2014
Quarterly publication of the Alpha Chi Sigma chemistry fraternity containing articles related to chemistry research and the activities of the organization, including local chapters and groups.
Date:
Winter 2014
Creator:
Alpha Chi Sigma
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library