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Experimental and Numerical Investigation of the Role of Initial Condition of the Dynamics of Rayleigh-Taylor Mixing

Description: Experiments and direct numerical simulations have been performed to examine the effects of initial conditions on the dynamics of a Rayleigh-Taylor mixing layer. Experiments were performed on a water channel facility to quantify the interfacial and velocity perturbations initially present at the two-fluid interface in a small Atwood number mixing layer. The measurements have been parameterized for implementation in numerical simulations of the experiment, and two- and three-dimensional direct nu… more
Date: August 16, 2004
Creator: Mueschke, N
Partner: UNT Libraries Government Documents Department
open access

Rates and progenitors of type Ia supernovae

Description: The remarkable uniformity of Type Ia supernovae has allowed astronomers to use them as distance indicators to measure the properties and expansion history of the Universe. However, Type Ia supernovae exhibit intrinsic variation in both their spectra and observed brightness. The brightness variations have been approximately corrected by various methods, but there remain intrinsic variations that limit the statistical power of current and future observations of distant supernovae for cosmological… more
Date: August 16, 2004
Creator: Wood-Vasey, William Michael
Partner: UNT Libraries Government Documents Department
open access

Evidence for neutrino oscillations in the Sudbury Neutrino Observatory

Description: The Sudbury Neutrino Observatory (SNO) is a large-volume heavy water Cerenkov detector designed to resolve the solar neutrino problem. SNO observes charged-current interactions with electron neutrinos, neutral-current interactions with all active neutrinos, and elastic-scattering interactions primarily with electron neutrinos with some sensitivity to other flavors. This dissertation presents an analysis of the solar neutrino flux observed in SNO in the second phase of operation, while {approx}2… more
Date: August 10, 2004
Creator: Marino, Alysia Diane
Partner: UNT Libraries Government Documents Department
open access

Ambient and elevated temperature fracture and cyclic-fatigue properties in a series of Al-containing silicon carbides

Description: A series of in situ toughened, Al, B and C containing, silicon carbide ceramics (ABC-SiC) has been examined with Al contents varying from 3 to 7 wt%. With increasing Al additions, the grain morphology in the as-processed microstructures varied from elongated to bimodal to equiaxed, with a change in the nature of the grain-boundary film from amorphous to partially crystalline to fully crystalline. Fracture toughness and cyclic fatigue tests on these microstructures revealed that although the 7 w… more
Date: August 30, 2004
Creator: Yuan, Rong
Partner: UNT Libraries Government Documents Department
open access

Moving in a New Direction: An Exploration in Kinetics

Description: Movement, whether conveyed through an actual motion or a gestured implication, remains an underlying theme in my creative process that started with my earliest works. I explored different aspects of kinetic sculpture, because I am seeking new ways to create motion such as experimenting with circulating air, wind, and the use of water features. I created a series consisting of three to five kinetic sculptures which do not rely on sound or direct viewer manipulation.
Date: August 2004
Creator: Illy, Etienne
Partner: UNT Libraries
open access

Within-session session changes in responding as a function of habituation vs. satiation.

Description: Behavior analysts refer to a decrease in response rate following repeated, contingent presentations of a reinforcing stimulus as a product of satiation. Other evidence suggests that these decreases may often be due to habituation to the sensory properties of the reinforcing stimulus. The investigation reported here sought to determine whether decreases in operant responding by 3 adults with developmental disabilities were due to satiation or habituation. During baseline, participants placed pok… more
Date: August 2004
Creator: Buckner, Lloyd Robert
Partner: UNT Libraries
open access

Layered Double Hydroxides: Synthesis, Characterization, and Interaction of Mg-Al Systems with Intercalated Tetracyanonickelate(II)

Description: The square-planar tetracyanonickelate(II) anion was intercalated into 2:1 and 3:1 Mg-Al layered double hydroxide systems (LDHs). In the 2:1 material, the anion holds itself at an angle of about 30° to the layers, whereas in the 3:1 material it lies more or less parallel to the layers. This is confirmed by orientation effects in the infrared spectra of the intercalated materials and by X-ray diffraction (XRD) data. The measured basal spacings for the intercalated LDH hosts are approximately 1… more
Date: August 2004
Creator: Brister, Fang Wei
Partner: UNT Libraries
open access

Needs of familial caregivers of cancer patients across the advanced cancer disease trajectory.

Description: Familial caregivers are providing increasing amounts of care to advanced cancer patients. Increased understanding of caregivers' needs is vital in providing necessary support to lessen caregiver burden and comorbidity. This study examines particular information needs across a variety of specific events in the advanced cancer disease trajectory. A cross-sectional sample of 107 familial caregivers (24 current and 83 bereaved) of people with advanced cancer completed a needs assessment survey alon… more
Date: August 2004
Creator: Bernard, Lori Lynn
Partner: UNT Libraries
open access

Samuel Richardson's Revisions to Pamela (1740, 1801)

Description: The edition of Pamela a person reads will affect his or her perception of Pamela's ascent into aristocratic society. Richardson's revisions to the fourteenth edition of Pamela, published posthumously in 1801, change Pamela's character from the 1740 first edition in such a way as to make her social climb more believable to readers outside the novel and to "readers" inside the novel. Pamela alters her language, her actions, and her role in the household by the end of the first edition; in the fo… more
Date: August 2004
Creator: Bender, Ashley Brookner
Partner: UNT Libraries
open access

Towards European Integration: Do the European Union and Its Members Abide by the Same Principles?

Description: In the last few decades the European Union (EU) and its members have emphasized the importance of human rights and the need to improve human rights conditions in Third World countries. In this research project, I attempted to find out whether the European Union and its members practice what they preach by giving precedence to countries that respect human rights through their Official Development Assistance (ODA) program. Furthermore, I tried to analyze whether European integration occurs at the… more
Date: August 2004
Creator: Etienne, Anne
Partner: UNT Libraries
open access

Maladaptive appraisals and intrusive thoughts associated with obsessive compulsive disorder: A semiidiographic approach.

Description: This project investigated the metacognitive strategies used to appraise obsessive thoughts employed by individuals with different anxiety symptoms. Two hundred eighty-seven undergraduate students completed two repertory grids and three anxiety scales. The repertory grids respectively examined the appraisal process of intrusive thoughts both from the perspective of the rater and the rater's imagined average person. Variables quantified from the rep grid related to the construal process of raters… more
Date: August 2004
Creator: Hutchinson, Geoffrey
Partner: UNT Libraries
open access

Impact of Texas Counselors' Network on students: A preliminary study.

Description: This study assessed the impact of the Texas Counselors' Network (TCN) on students of counselors who attended TCN workshops. TCN is a professional organization created in 1996 for the professional development of counselors. TCN impacts primary and secondary school students by providing counselors with selected skills to assist them in helping students. In theory, TCN thus impacts these students by improving overall skills of participating counselors. This study assessed the progress of students … more
Date: August 2004
Creator: Holmes, Janet
Partner: UNT Libraries
open access

Microfarms

Description: This study describes the role of rural women and their importance in the success of microfarm projects. Microfarm cultivators can increase their income levels through trade of agricultural products. By adopting self-sustaining methods, the cultivator saves money and does not need to rely as much on goods and services from outside resources to increase food production efficiencies in microfarms. This goal can be reached in part through careful planning and construction of the microfarm facility.… more
Date: August 2004
Creator: Hernandez, Rafael I.
Partner: UNT Libraries
open access

Internet Use Among African American College Students: Psychosocial Correlates of the Digital Divide

Description: An exploratory study was conducted examining Internet usage among African-American college students. The study examined both psychosocial correlates, including technological anxiety and racial identity as well as socioeconomic measures, as they impacted Internet usage. Additionally, three distinct measures of Internet usage, thin access, thick access and the Internet Connectedness Index (ICI), were used as criterion variables in three separate multiple regression analysis (MRA) models. The resu… more
Date: August 2004
Creator: Harvey, Pejcharat Jane
Partner: UNT Libraries
open access

Development and Psychometric Validation of the State-Trait Spirituality Inventory

Description: The present study contributes to the widening body of spirituality research by conceptualizing it as a state-trait construct. A new measure of spirituality, the State-Trait Spirituality Inventory (STSI), was created and validated according to psychometric methods of test construction. In its current form, the STSI contains seven state spirituality items and six trait spirituality items. A thorough review of the literature identified common themes in spirituality definitions and assisted in deve… more
Date: August 2004
Creator: Harvey, Michelle B.
Partner: UNT Libraries
open access

The Naturalist

Description: The Naturalist is a collection of poems with a critical preface. In this preface, titled "'Death is the mother of beauty': The Contemporary Elegy and the Search for the Dead," I examine contemporary alterations and manifestations of the traditional genre of elegy. I explore the idea that the contemporary mourner is aware of the need to search for meaning despite living in a world without a centrally believed mythology. This search exposes the mourner's need to remain connected to the dead and, … more
Date: August 2004
Creator: Harvell, Elizabeth A.
Partner: UNT Libraries
open access

Crazy People

Description: Crazy People, a collection of short stories, presents characters and their various psychological crutches. The preface explores the concept of negative space as it applies to short fiction, manifesting itself in the form of open-ended endings, miscommunication between characters, rhetorical questions, and allusions to unspecified characters. The preface seeks to differentiate "good" space from "bad" space by citing examples from the author's own work, as well as the works of Raymond Carver, Dan… more
Date: August 2004
Creator: Flory, Kristen A.
Partner: UNT Libraries
open access

Multiple-Respondent Anecdotal Assessments for Behavior Disorders: An Analysis of Interrater Agreement and Correspondence With Functional Analysis Outcomes

Description: An analysis of interrater agreement across multiple respondents on anecdotal assessments and correspondence between functional analysis outcomes was completed. Experiment I evaluated overall agreement among multiple respondents (direct-care staff) on the hypothesized function of each residents (28 adults with mental retardation) problematic behavior using the Motivational Assessment Scale (MAS) and the Functional Analysis Screening Tool (FAST). Results of the questionnaires indicated that respo… more
Date: August 2004
Creator: Fahrenholz, Anney Renee
Partner: UNT Libraries
open access

Social Support, Depression, and Cardiovascular Disease in Married, Middle-Aged/Older Adults

Description: This study examined the relationship between physical health, social support, and depression in a married, middle-aged/older adult sample in which at least one partner has heart disease. The data was obtained from a national longitudinal study the Health and Retirement Survey (HRS) and is composed of selected respondents and their spouses. The HRS Wave 1 data that was used for these analyses was collected in 1992 and 1993. This study tested a stress buffer model predicting the relationship betw… more
Date: August 2004
Creator: Hargett Thompson, Candace L.
Partner: UNT Libraries
open access

Symphonic Fantasia Han-Kook Oui Ja-Yeon (Nature in Korea): Score and Critical Commentary

Description: The Symphonic Fantasia Han-Kook oui Ja-Yeon (Nature in Korea ) is a single-movement orchestral piece, which is divided into 5 characteristic sections - each section has programmatic subtitles (Rocks, River, Sea, Wind, and Mountain) and its own idée fixe motive. The degree of texture (homophonic/polyphonic), dynamics (strong/weak), density (thick/thin), velocity (fast/slow), and orchestration (emphasizing various sections of the orchestra) is determined by depiction of the subtitles. The c… more
Date: August 2004
Creator: Han, Sang-Eun
Partner: UNT Libraries
open access

Economic Impact of Hospitals: the Case of Baylor Regional Medical Center at Grapevine.

Description: This report analyzes the economic impacts of the Baylor Regional Medical Center at Grapevine, Texas. The economic impacts are analyzed using the IMPLAN impact modeling system developed by the Minnesota IMPLAN Group. The analysis evaluates construction activities by Baylor-Grapevine as well as procurement spending and employment. Additionally, the impact of ancillary facilities surrounding Baylor-Grapevine and the impact of patient visitor spending is also reviewed. Total recurring impacts of pr… more
Date: August 2004
Creator: Graves, Jennifer M.
Partner: UNT Libraries
open access

The Anatomy of Academic Dishonesty: Cognitive Development, Self-Concept, Neutralization Techniques, and Attitudes Toward Cheating

Description: This study explored the relationship between cheating among university students and their cognitive developmental levels, use of neutralization techniques, self-concept as a multifaceted cognitive construct, and attitude toward cheating. The purposes of this study were to investigate: (1) The relationships between academic dishonesty and each of the following overall independent variables: cognitive development, use of neutralization techniques, self-concept as a multifaceted cognitive construc… more
Date: August 2004
Creator: Arvidson, Cody Jean
Partner: UNT Libraries
open access

An Analysis of Adler's Theory and the Female Criminal

Description: This research paper addressed the following question: Do select case studies conform to Dr. Freda Adler's theory regarding socio-economic influences on female criminal behavior or dispute her theory? My research involved three female criminals: Karla Faye Tucker, Andrea Yates, and Susan Smith. I addressed Adler's theory in detail, other theories, the makeup of the female criminal and various female crimes. This study provided evidence that all three case studies conform to Adler's theory. nIn a… more
Date: August 2004
Creator: Armentrout, Elizabeth G.
Partner: UNT Libraries
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