UNT Theses and Dissertations - 2,963 Matching Results

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His, Hers, and Theirs: Domestic Relations and Marital Property Law in Texas to 1850

Description: Texas law regarding the legal status of women and their property rights developed from the mingling of Spanish and English laws. Spanish laws regarding the protection of women's rights developed during the centuries-long Reconquest, when the Spanish Christians slowly took back the Iberian Peninsula from the Moorish conquerors. Women were of special importance to the expansion of Spanish civilization. Later, when Spain conquered and colonized the New World, these rights for women came, too. In … more
Date: May 2000
Creator: Stuntz, Jean A.
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Husband's and Daughter's Role Strain During Breast Cancer Hospice Patient Caregiving and Bereavement Adjustment

Description: Current literature regarding caregiver bereavement adjustment has advanced two competing models explaining adjustment in relation to caregiver interrole conflict: the Relief Model and Complicated Grief Model. This research has primarily focused on the experience of those providing care to dementia patients. This study tests these competing models of bereavement adjustment for husband and daughter caregivers of breast cancer hospice patients. For husbands, greater psychological strain and health… more
Date: May 2000
Creator: Bernard, Lori Lynn
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Identifying At-Risk Students: An Assessment Instrument for Distributed Learning Courses in Higher Education

Description: The current period of rapid technological change, particularly in the area of mediated communication, has combined with new philosophies of education and market forces to bring upheaval to the realm of higher education. Technical capabilities exceed our knowledge of whether expenditures on hardware and software lead to corresponding gains in student learning. Educators do not yet possess sophisticated assessments of what we may be gaining or losing as we widen the scope of distributed learning.… more
Date: May 2000
Creator: Osborn, Viola
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Images of Remembered Earth

Description: Images of Remembered Earth is a musical composition scored for full orchestra. The composition was inspired by Georgia O'Keeffe's painting, Light Coming on the Plains I (1917), which depicts a sunrise over a flat and empty landscape. In the painting, the expanse of the sun's rays is expressed through an even-blended transformation of color from goldish-blue at the light's source to progressively darker shades of blue near the edges of the canvas. The progression of color is interrupted by thi… more
Date: May 2000
Creator: Floyd, James Michael
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Improved Fabrication and Quality Control of Substrate Integrated Microelectrode Arrays

Description: Spontaneously active monolayer neuronal networks cultured on photoetched multimicroelectrode plates (MMEPs) offer great potential for use in studying neuronal networks. However, there are many problems associated with frequent, long-term use of MMEPs. The major problems include (1) polysiloxane insulation deterioration and breakdown, (2) and loss of gold at the gold electroplated indium-tin oxide (ITO) electrodes. The objective of this investigation was to correct these major problems. Qual… more
Date: May 2000
Creator: Zim, Bret E.
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Infinite Planar Graphs

Description: How many equivalence classes of geodesic rays does a graph contain? How many bounded automorphisms does a planar graph have? Neimayer and Watkins studied these two questions and answered them for a certain class of graphs. Using the concept of excess of a vertex, the class of graphs that Neimayer and Watkins studied are extended to include graphs with positive excess at each vertex. The results of this paper show that there are an uncountable number of geodesic fibers for graphs in this exte… more
Date: May 2000
Creator: Aurand, Eric William
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The Influence of National Standards for Early Childhood Programs on Selected Rural Settings of the Education Service Centers in East Texas

Description: This study addressed the current status of early childhood curriculum design and implementation in the Texas Education Service Centers Seven and Eight. No Previous research about the characteristics of the preschool programs had been completed in those areas. This research established if preschool programs were receiving priority status in East Texas. The results yielded evidence regarding the characteristics of administrators, teachers, curriculum implementation, plus parent and community invo… more
Date: May 2000
Creator: Sanders, Mary Elizabeth
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Integration of field-based analysis of plant community dynamics with quantitative analysis of landscape change in the Ray Roberts Lake area, 1987—1997

Description: This study focused on the effectiveness of integrating traditional plant community analyses with landscape ecological analyses based on remotely sensed data. A temporal analysis of plant community diversity was conducted for major plant communities of the Ray Roberts Lake area using transect monitoring data collected between 1987 and 1997. Landscape analyses were performed with FRAGSTATS*ARC using classified SPOT satellite imagery for 1987 and 1997. Although the methodology developed in this wo… more
Date: May 2000
Creator: McDonough, Theresa J.
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Internet and U.S. citizen militias

Description: Smelser's theory of collective behavior holds that people join radical social movements because they experience strain. Among the most serious strains are anxieties that relate to one's social status and the roles that correspond to it. A social movement arises as a means of coping with these anxieties. Militia presence and activity on the Internet (especially Usenet) is a phenomenon that can be studied within the framework of Smelser's theory. Militia watchers contend that those who join the … more
Date: May 2000
Creator: Weeber, Stan C.
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An investigation of technical support issues influencing user satisfaction

Description: The widespread distribution of personal computers (PCs) throughout organizations has made a substantial impact on information systems. Additionally, the tremendous growth of the Internet has changed the way business is carried out. As the user population evolves into a much more technical and demanding group, their needs are also changing. With this change, Management Information Systems (MIS) departments must develop new ways of providing service and support to the user community. This study … more
Date: May 2000
Creator: Gutierrez, Charletta Frances
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Korean Electoral Behavior: The 1992 and 1997 Presidential Elections

Description: This is a study of Korean presidential elections. Its purpose is to determine how Koreans voted in the 1992 and 1997 presidential elections and to examine the factors that contributed to winners. In addition, the study compares the two elections by developing three models: candidate choice, voter turnout and political interest models. Using post election data from the Korean Social Science Data Center a multinomial logit regression was used in the candidate choice model. It shows that Korean v… more
Date: May 2000
Creator: Kang, Kyung-Tae
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Learner-Centered Teacher Beliefs and Student-Perceived Teaching Effectiveness

Description: Following Barr and Tagg's formalization of the concept of learner-centered educational practice at the postsecondary level as described in their seminal article in Change in 1995, survey instruments have been developed to assess teachers' beliefs about their own learner-centeredness.. The research reported in this dissertation examined the connection between college students' perceptions of teacher effectiveness on each of four dimensions appearing as questions on the IDEA Survey of student rea… more
Date: May 2000
Creator: King, Jeffrey M.
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Linearity and monotonicity of a 10-bit, 125 MHz, segmented current steering digital to analog converter

Description: The purpose of this research is to determine the linearity and monotonicity of the THS5651IDW digital to analog converter (DAC), a prototype of the future Texas Instruments TLV5651, 10-bit, 125 MHz communication DAC. Testing was conducted at the Texas Instruments facility on Forest Lane, Dallas, Texas. Texas Instruments provided test equipment, software and laboratory space to obtain test data. Analysis of the data found the DAC to be monotonic since the magnitude of the differential nonlineari… more
Date: May 2000
Creator: Bittle, Charles C.
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Macroinvertebrate Community Structure as an Indicator of Watershed Health in the Upper Trinity River Basin, North Central Texas

Description: This study describes macroinvertebrate community structure and assesses its potential in detecting point and non-point sources of disturbance associated with rural and urban areas in the Upper Trinity River Basin. Geospatial techniques were used to quantify landuse within the watershed in a GIS. At rural sites near the headwaters of the Trinity River, collector-gathering burrowers that are adapted to minimal flow comprised the majority of taxa. Destinies of taxa compositions at downstream sites… more
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Date: May 2000
Creator: Stephenson, Jaynie M.
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Market valuation of the translation process under SFAS No. 52: Further evidence

Description: This research investigates the information content of the translation information resulting from exchange rate fluctuations. Two hypotheses are examined. The dollar movement hypotheses investigate whether there is a positive relationship between security valuation and the translation information and whether the market assigns different weights to translation gains and losses in both the depreciating and appreciating exchange rate environments. The geographic concentration hypothesis tests wheth… more
Date: May 2000
Creator: Lin, Henghsiu
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Maximum-Sized Matroids with no Minors Isomorphic to U2,5, F7, F7¯, OR P7

Description: Let M be the class of simple matroids which do not contain the 5-point line U2,5 , the Fano plane F7 , the non-Fano plane F7- , or the matroid P7 , as minors. Let h(n) be the maximum number of points in a rank-n matroid in M. We show that h(2)=4, h(3)=7, and h(n)=n(n+1)/2 for n>3, and we also find all the maximum-sized matroids for each rank.
Date: May 2000
Creator: Mecay, Stefan Terence
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Measuring attention: An evaluation of the Search and Cancellation of Ascending Numbers (SCAN) and the short form of the Test of Attentional and Interpersonal Style (TAIS)

Description: This study found a relationship between the Search and Cancellation of Ascending Numbers (SCAN), Digit Span, and Visual Search and Attention Test (VSAT). Data suggest the measures represent a common construct interpreted to be attention. An auditory distracter condition of the SCAN did not distract participants, while the measure exhibited ample alternate forms reliability. The study also found that the Test of Attentional and Interpersonal Style (TAIS) short form poorly predicted performance o… more
Date: May 2000
Creator: Greher, Michael R.
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MEDLINE Metric: A method to assess medical students' MEDLINE search effectiveness

Description: Medical educators advocate the need for medical students to acquire information management skills, including the ability to search the MEDLINE database. There has been no published validated method available to use for assessing medical students' MEDLINE information retrieval skills. This research proposes and evaluates a method, designed as the MEDLINE Metric, for assessing medical students' search skills. MEDLINE Metric consists of: (a) the development, by experts, of realistic clinical scen… more
Date: May 2000
Creator: Hannigan, Gale G.
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Microstructure and Electronic Structures of Er-Doped Si Nano-particles Synthesized by Vapor Phase Pyrolysis

Description: Si nanoparticles are new prospective optoelectronic materials. Unlike bulk Si cry-stals, Si nanoparticles display intriguing room-temperature photoluminescence. A major challenge in the fabrication of Si nanoparticles is the control of their size distribution. The rare-earth element Er has unique photo emission properties, including low pumping power, and a temperature independent, sharp spectrum. The emission wavelength matches the transmission window of optical fibers used in the telecommunic… more
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Date: May 2000
Creator: Chen, Yandong
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Modeling Utilization of Planned Information Technology

Description: Implementations of information technology solutions to address specific information problems are only successful when the technology is utilized. The antecedents of technology use involve user, system, task and organization characteristics as well as externalities which can affect all of these entities. However, measurement of the interaction effects between these entities can act as a proxy for individual attribute values. A model is proposed which based upon evaluation of these interaction ef… more
Date: May 2000
Creator: Stettheimer, Timothy Dwight
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Mutation Rate Analysis of the Human Mitochondrial D-loop and its Implications for Forensic Identity Testing

Description: To further facilitate mitochondrial DNA (mtDNA) sequence analysis for human identity testing, a better understanding of its mutation rate is needed. Prior to the middle 1990's the mutation rate applied to a forensic or evolutionary analysis was determined by phylogenetic means, This method involved calculating genetic distances as determined by amino acid or DNA sequence variability within or between species. The mutation rate as determined by this method ranged from 0.025-0.26 nucleotide subst… more
Date: May 2000
Creator: Warren, Joseph E.
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No Slip-Shod Muse: A Performance Analysis of Some of Susanna Centlivre's Plays

Description: In 1982, Richard C. Frushell urged the necessity for a critical study of Susanna Centlivre's plays. Since then, only a handful of books and articles briefly discuss herand many attempt wrongly to force her into various critical models. Drawing on performativity models, my reading of several Centlivre plays (Love's Contrivance, The Gamester, The Basset-Table and A Bold Stroke for a Wife) asks the question, "What was it like to see these plays in performance?" Occupying somewhat uneasy ground be… more
Date: May 2000
Creator: Herrell, LuAnn R. Venden
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An Online Academic Support Model for Students Enrolled in Internet-Based Classes

Description: This doctoral dissertation describes a research study that examined the effectiveness of an experimental Supplemental Instruction (SI) program that utilized computer-mediated communication (CMC) rather than traditional SI review sessions. During the Spring 1999 semester, six sections of an introductory computer course were offered via the Internet by a suburban community college district in Texas. Using Campbell and Stanley's Nonequivalent Control Group model, the online SI program was randomly… more
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Date: May 2000
Creator: Rockefeller, Debra J.
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Oxygen Uptake Kinetics in Severe Intensity Exercise

Description: The purpose of this study was to describe mathematically the oxygen uptake kinetics during cycle ergometry, and to examine the effect of intensity on the kinetic responses within the severe domain. Sixteen volunteers performed a series of exercise tests at a range of intensities selected to elicit fatigue in ~3 to 10 min. A simple mono-exponential model effectively described the response across all intensities. There was a positive correlation between the response time and the time to fatigue, … more
Date: May 2000
Creator: Blumoff, Sonja
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