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A New Wireless Sensor Node Design for Program Isolation and Power Flexibility

Description: Over-the-air programming systems for wireless sensor networks have drawbacks that stem from fundamental limitations in the hardware used in current sensor nodes. Also, advances in technology make it feasible to use capacitors as the sole energy storage mechanism for sensor nodes using energy harvesting, but most current designs require additional electronics. These two considerations led to the design of a new sensor node. A microcontroller was chosen that meets the Popek and Goldberg virtualiz… more
Date: December 2009
Creator: Skelton, Adam W.
Item Type: Refine your search to only Thesis or Dissertation
open access

Racial Stereotypes and Racial Assimilation in a Multiracial Society

Description: Interest in a multiracial society has increased in recent years and including on racism and prejudice and in the propensity to stereotype out-groups. Theories on racism help explain the dominant group's prejudice toward subordinate groups. Yet they only explain why dominant group members stereotype subordinates or if the dominant group's propensity to stereotype is different from that of subordinate groups. Recent assimilation theories suggest that some minorities are assimilating with Whites b… more
Date: December 2009
Creator: Youngblood, Thomas
Item Type: Refine your search to only Thesis or Dissertation
open access

Survey of Approximation Algorithms for Set Cover Problem

Description: In this thesis, I survey 11 approximation algorithms for unweighted set cover problem. I have also implemented the three algorithms and created a software library that stores the code I have written. The algorithms I survey are: 1. Johnson's standard greedy; 2. f-frequency greedy; 3. Goldsmidt, Hochbaum and Yu's modified greedy; 4. Halldorsson's local optimization; 5. Dur and Furer semi local optimization; 6. Asaf Levin's improvement to Dur and Furer; 7. Simple rounding; 8. Randomized rounding;… more
Date: December 2009
Creator: Dutta, Himanshu Shekhar
Item Type: Refine your search to only Thesis or Dissertation
open access

God's Perfect Timing

Description: When I was thirty-three years old, I discovered I was an adoptee. In this memoir of secrecy and love, betrayal and redemption, I reflect on my early experiences as a doted-on only child firmly rooted in the abundant love of my adoptive family, my later struggles with depression and obsessive-compulsive disorder, my marriage to a fellow-adoptee, my discovery of my own adoption and the subsequent reunion with my birth family, my navigation through the thrills and tensions of newly complicated fam… more
Date: August 2009
Creator: Rizzo, Steven
Item Type: Refine your search to only Thesis or Dissertation
open access

The Other Side of Yesterday

Description: The four stories in this collection follow different, yet strikingly similar, protagonists who are facing crossroads in life. These stories include memories and specific scenes from the past that combine with scenes from the present to trace the development of the characters.
Date: May 2009
Creator: Rose, John
Item Type: Refine your search to only Thesis or Dissertation
open access

An Evaluation Model for Identifying Lewisville and San Angelo, Texas, as Senior Ready Communities

Description: This research portrays a paradigm for the assessment of aging services to support populations aging in place. The dissertation was designed to establish a model to identify and evaluate senior ready communities. Area specific social programs and services are identified. In order to meet the growing needs of aging populations, the dynamic representation of existing services and the need for services that could be developed in certain communities require reevaluation in current planning, restruct… more
Date: December 2009
Creator: Sanders, David N.
Item Type: Refine your search to only Thesis or Dissertation
open access

An Investigation Into the Factors Leading to the Closure of 40 Private Four-Year Colleges between 1965 and 2005

Description: This study searches for a set of common indicators that contributed to the ultimate closure of 40 colleges and universities between 1965 and 2005. From research on related literature, a set of 31 contributing factors was identified by published experts and observers in higher education. That set of indicators was then used as a list of 31 questions answered by data found in newspaper articles, professional journals, published research work, published institutional records, data taken from the D… more
Date: December 2009
Creator: Province, Terry Paul
Item Type: Refine your search to only Thesis or Dissertation
open access

Health Status and Access Disparities Among the Uninsured Working-Age Population in a Safety-Net Healthcare Network in Tarrant County, Texas

Description: The objective of this research was to determine if healthcare access disparities exist across race and gender in a publically funded safety-net healthcare system in Texas. Data were examined from a representative random sample of 1468 adults aged 18-64 who were patients in this safety-net system in July and August of 2000 and were analyzed using binary logistic regression and chi-square measures of significance. Major Findings: On measures of health status - overall health rating (p =.051), lim… more
Date: December 2009
Creator: Queen, Courtney M.
Item Type: Refine your search to only Thesis or Dissertation
open access

High Resolution Satellite Images and LiDAR Data for Small-Area Building Extraction and Population Estimation

Description: Population estimation in inter-censual years has many important applications. In this research, high-resolution pan-sharpened IKONOS image, LiDAR data, and parcel data are used to estimate small-area population in the eastern part of the city of Denton, Texas. Residential buildings are extracted through object-based classification techniques supported by shape indices and spectral signatures. Three population indicators -building count, building volume and building area at block level are deriv… more
Date: December 2009
Creator: Ramesh, Sathya
Item Type: Refine your search to only Thesis or Dissertation
open access

The Effects of Attendance at a Senior Center on the Quality of Life and Well Being of Grandparents Rearing Grandchildren.

Description: The purpose of this study was to determine the effects of attendance at a senior center on the well being and quality of life of grandparents that were rearing grandchildren. Using convenience sampling, grandparents (N=130) who were rearing grandchildren were given a self administered demographic data survey along with an attendance at a senior center questionnaire, the Quality of Life Scale, the Well Being Scale by Liang, the UCLA Loneliness Scale, the Caregiver Burden Scale, and the Role Sa… more
Date: December 2009
Creator: Rhynes, LaTrica Q.
Item Type: Refine your search to only Thesis or Dissertation
open access

The Effects of Pre-Kindergarten on Spanish-Speaking Bilingual Students Taking the Third Grade TAKS Reading Test

Description: The purpose of this dissertation is to provide research and data examining the impact of pre-kindergarten on Spanish-speaking ESL students on the third grade TAKS Reading test scores. The two questions that guided this study are: (1) As measured by the third grade TAKS reading test, what is the relationship between those limited english proficient (LEP) Spanish-speaking children who attended a pre-kindergarten program and those who did not attend a pre-kindergarten program? and (2) As measured … more
Date: December 2008
Creator: Ringhauser, John T.
Item Type: Refine your search to only Thesis or Dissertation
open access

Victimization and expressions of relational and overt aggression among boys and girls with ADHD.

Description: This study investigated if girls and boys high in ADHD symptomology exhibited and experienced relational and overt aggression differently than boys and girls without ADHD symptoms using peer, parent and teacher ratings. A measurement of social behavior for parent ratings was also validated. Using archival data, 371 3rd- 6th graders from a north Texas school district participated in the study, along with a parent or guardian and teachers. Results supported that ADHD subtype predicted more overt… more
Date: December 2009
Creator: Rivero, Arlene Jean Abello
Item Type: Refine your search to only Thesis or Dissertation
open access

Inferring Social and Internal Context Using a Mobile Phone

Description: This dissertation is composed of research studies that contribute to three research areas including social context-aware computing, internal context-aware computing, and human behavioral data mining. In social context-aware computing, four studies are conducted. First, mobile phone user calling behavioral patterns are characterized in forms of randomness level where relationships among them are then identified. Next, a study is conducted to investigate the relationship between the calling behav… more
Date: December 2009
Creator: Phithakkitnukoon, Santi
Item Type: Refine your search to only Thesis or Dissertation
open access

Design and Validation of an Automated Multiunit Composting System.

Description: This thesis covers the design of an automated multiunit composting system (AMUCS) that was constructed to meet the experimental apparatus requirements of the ASTM D5338 standard. The design of the AMUCS is discussed in full detail and validated with two experiments. The first experiment was used to validate the operation of the AMUCS with a 15 day experiment. During this experiment visual observations were made to visually observe degradation. Thermal properties and stability tests were perform… more
Date: December 2009
Creator: Pickens, Mark Everett
Item Type: Refine your search to only Thesis or Dissertation
open access

Does the Knowledge of Unaudited Account Balances Adversely Affect the Performance of Substantive Analytical Procedures?

Description: Auditors use substantive analytical procedures to make assertions about the adequacy and appropriateness of client balances. The analytical procedure process consists of auditors creating independent account expectations and corroborating unusual fluctuations through obtaining and evaluating additional audit evidence. Prior analytical procedure research has found that knowledge of clients' unaudited account balances biases auditors' expectations towards the current year figures. However, thi… more
Date: December 2009
Creator: Pike, Byron J.
Item Type: Refine your search to only Thesis or Dissertation
open access

The perception of English language arts teachers about instructional changes following the implementation of the Texas Assessment of Knowledge and Skills test.

Description: Accountability in education has been expanding for the past twenty years. As standards for curricular areas continued to develop, educational shareholders desired a way to measure student achievement contextualized by the established standards. Since 1964, policies expanded federal involvement with education, and with the No Child Left Behind Act in 2001, high-stakes testing became a significant part of public education. In Texas, testing transitioned in 2003 to the Texas Assessment of Knowledg… more
Date: December 2009
Creator: Horn, Brian K.
Item Type: Refine your search to only Thesis or Dissertation
open access

Synthesis and Characterization of Platinum(II)(2-(9-anthracenylylidene)-4,5-bis(diphenylphosphino)-4-cyclopenten-1,3-dione)(dichloride), Platinum(II)(2-(9-anthracenylylidene)-4,5-bis(diphenylphosphino)-4-cyclopenten-1,3-dione(maleonitriledithiolate), and Platinum(II)(4,5-bis(diphenylphosphino)-4-cyclopenten-1,3-dione)(4-Methyl-1,2-benzene dithiol)

Description: Substitution of the 1,5-cyclooctadiene (cod) ligand in PtCl2(cod) (1) by the diphosphine ligand 4,5-bis(diphenylphosphino)-4-cyclopenten-1,3-dione (bpcd) yields PtCl2(bpcd) (2). Knoevenagel condensation of 2 with 9-anthracenecarboxaldehyde leads to the functionalization of the bpcd ligand and formation of the corresponding 2-(9-anthracenylidene)-4,5-bis(diphenylphosphino)-4-cyclopenten-1,3-dione (abpcd) substituted compound PtCl2(abpcd) (3), which is also obtained from the direct reaction of 1… more
Date: December 2009
Creator: Hunt, Sean W.
Item Type: Refine your search to only Thesis or Dissertation
open access

An Informational Theory of Midterm Elections: The Impact of Iraq War Deaths on the 2006 Election.

Description: There has been much scholarly attention directed at the Iraq war's role in determining voter choice. I attempt to extend that research into voter turnout to determine what role the Iraq war played in 2006 voter turnout. This paper argues that turnout at the state level could be explained by the number of US deaths each state had sustained from the Iraq occupation at the time of the election. A theory of voter activation based on information availability is put forth to explain the relationsh… more
Date: August 2009
Creator: Kahanek, Jared E.
Item Type: Refine your search to only Thesis or Dissertation
open access

Evaluation of skill maintenance, performance factors, and external validity in a behavioral parent training program.

Description: Child maltreatment affects 900 thousand children in the U.S. every year and impacts all areas of daily functioning. Behavioral parent training (BPT) programs have effectively taught parenting and demonstrated externally valid outcomes (i.e., lower recidivism rates). Skill maintenance assessments for BPTs have mixed results. The Behavior Management and Parenting Services (BMAPS) program has shown effective skill training for court-mandated families. This study assessed skill maintenance and perf… more
Date: August 2009
Creator: Scherbarth, Andrew J.
Item Type: Refine your search to only Thesis or Dissertation
open access

The relationship of student characteristics, help seeking behavior, academic and environmental variables with student course completion in community college online courses: An application of a conceptual model.

Description: The purpose of this study was to examine differences and relationships in student definition and background characteristics, help seeking behaviors, academic and environmental variables between and among community college students at a single institution who successfully completed and those who did not complete online courses during a single term. An adapted version of Bean and Metzner's conceptual model of nontraditional student attrition provided the theoretical framework for the study. The r… more
Date: December 2009
Creator: Schumann, Sherry Haskin
Item Type: Refine your search to only Thesis or Dissertation
open access

An Introduction to the AIDS Quilt Songbook and Its Uncollected Works

Description: The AIDS Quilt Songbook was a musical response to the shame surrounding the outbreak of the HIV virus and was one of the first art song publications to deal with the topic of HIV and AIDS. This DMA thesis documents the significance and history of the AIDS Quilt Songbook, traces the progression of the project up until December 1, 2008, and documents the work, experiences, and words of the composers who have been inspired to contribute to the AIDS Quilt Songbook Project. In 1981, the medical and … more
Date: August 2009
Creator: Seesholtz, John Clayton
Item Type: Refine your search to only Thesis or Dissertation
open access

Phosphorescent Emissions of Coinage Metal-Phosphine Complexes: Theory and Photophysics

Description: The major topics discussed are all relevant to the bright phosphorescent emissions of coinage metal complexes (Cu(I), Ag(I) and Au(I)) with an explanation of the theoretical background, computational results and ongoing work on the application in materials and optoelectronic devices. Density functional computations have been performed on the majority of the discussed complexes and determined that the most significant distortion that occurs in Au(I)-phosphine complexes is a near and beyond a T-s… more
Date: December 2009
Creator: Sinha, Pankaj
Item Type: Refine your search to only Thesis or Dissertation
open access

E‐Shape Analysis

Description: The motivation of this work is to understand E-shape analysis and how it can be applied to various classification tasks. It has a powerful feature to not only look at what information is contained, but rather how that information looks. This new technique gives E-shape analysis the ability to be language independent and to some extent size independent. In this thesis, I present a new mechanism to characterize an email without using content or context called E-shape analysis for email. I expl… more
Date: December 2009
Creator: Sroufe, Paul
Item Type: Refine your search to only Thesis or Dissertation
open access

Bidirectional Effects Between Engaged Lifestyle and Cognition in Later Life: Exploring the Moderation Hypothesis for Personality Variables.

Description: Longitudinal data (N = 263) was used to investigate the bidirectional relationship between engagement (engaged lifestyle activities) and cognition (crystallized & fluid intelligence). Extroversion and openness to experience were also tested as moderators of the relationship between engagement and cognition. Results showed that the relationship between engagement at Wave 1 and cognition at Wave 2 did not differ from the relationship between cognition at Wave 1 and engagement at Wave 2. Testing f… more
Date: December 2009
Creator: Starkweather, Jonathan
Item Type: Refine your search to only Thesis or Dissertation
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