UNT Theses and Dissertations - 51 Matching Results

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Cognitive and Perceptual-Motor Indicators of Lateralized vs. Diffuse Brain Damage in Adults.

Description: Among the goals of the neuropsychological assessment are to detect the presence of brain damage, localize which areas of the brain may be dysfunctional and describe subsequent functional impairments. The sensitivity of neuropsychological instruments in carrying out these functions is a question of some debate. The purpose of this study is to determine the utility of lateralizing indicators from the WAIS-III, McCarron Assessment of Neuromuscular Development (MAND) and Haptic Visual Discriminatio… more
Date: December 2002
Creator: Gregory, Erin Kathleen Taylor
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Development, Validation, and Evaluation of a Continuous, Real-time, Bivalve Biomonitoring System

Description: A biological monitoring tool to assess water quality using bivalve gape behavior was developed and demonstrated. The purpose of this work was to develop methodologies for screening water quality appropriate to the goals of the watershed paradigm. A model of bivalve gape behavior based on prediction of behavior using autoregressive techniques was the foundation of the bivalve biomonitoring system. Current technology was used in developing the system to provide bivalve gape state data in a contin… more
Date: December 2002
Creator: Allen, H. Joel
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

The Effects of Reinforcing Operant Variability on Task Acquisition

Description: Neuringer, Deiss, and Olson (2000) was replicated and extended to determine the effect of variability contingencies on task acquisition for twelve 7-9 year old children. Subjects first learned to press a computer's shift keys with increasing response variation. Each subject was then exposed to one of three experimental conditions during which they received a point for target responses. Variability condition subjects received additional points on a variable interval schedule for nontarget respon… more
Date: December 2002
Creator: Seymour, Kail H.
Item Type: Refine your search to only Thesis or Dissertation
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The Impact of Drug Testing on Secondary School Students

Description: The purpose of this study determined whether use of student random drug testing provided an effective means to reduce drug usage by secondary school students. The participants included 50,214 7th through 12th grade students in 12 selected public schools. All school districts participated in the Texas School Survey of Substance Use in 1994, 1996, 1998, and 2000. The six districts in the experimental group used drug testing as a method of reducing drug usage among students. The six districts in t… more
Date: December 2002
Creator: Lee, Elton David
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Integrating life cycle analysis and the ecological footprint calculator to foster sustainable behaviors

Description: Many tools have been developed to assess global, national or regional sustainable development policies. However, as governments develop sustainable policies, individuals must also feel empowered to affect their personal impact on the planet. This thesis integrates three sustainability concepts that lend themselves to individual sustainability: The natural step, life cycle assessment, and the ecological footprint. TNS serves to provide the meaning and substance toward sustainable development. … more
Date: December 2002
Creator: Anderle, Kathryn
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Investigations of Thermochemistry and the Kinetics of H Atom Radical Reactions

Description: The thermochemistry of several species, and the kinetics of various H atom radical reactions relevant to atmospheric and combustion chemistry were investigated using ab initio theoretical techniques and the flash photolysis / resonance fluorescence technique. Using ab initio quantum mechanical calculations up to the G3 level of theory, the C-H bond strengths of several alkanes were calculated. The bond strengths were calculated using two working reactions. From the results, it is apparent that … more
Date: December 2002
Creator: Peebles, Lynda Renee
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Layered Double Hydroxides: Morphology, Interlayer Anion, and the Origins of Life

Description: The preparation of layered double hydroxides via co-precipitation of a divalent/trivalent metal solution against a base results in 1 mm LDH particles with a disorganized metal lattice. Research was performed to address these morphological issues using techniques such as Ostwald ripening and precipitation via aluminate. Another interesting issue in layered double hydroxide materials is the uptake and orientation of anions into the interlayer. Questions about iron cyanide interlayer anions have b… more
Date: December 2002
Creator: Halcom-Yarberry, Faith Marie
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

A Physiological Age-Grading System for Female Hydrellia pakistanae Deonier (Diptera: Ephydridae)

Description: Conflicting opinions about the effectiveness of H. pakistanae as a biological control agent for hydrilla prompt researchers to find a method for assessing the fly's success. Developing a physiological age-grading system for the fly using ovarian morphology to detect changes in reproductive activity is useful for evaluating reproductive status of the fly in field populations. Changes in the appearance of follicular relics in ovaries with oviposition provide a reliable method to estimate fec… more
Date: December 2002
Creator: Lenz, Jennifer Marie
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Ranges of consideration: crossing the fields of ecology, philosophy and science studies.

Description: Environmental issues are often complex with many different constituents operating according to a broad range of communication techniques. In order to foster negotiations, different perspectives need to be articulated in lucid ways sensitive to various viewpoints and circumstances. In my thesis I investigate how certain approaches to environmental discourse effect dialogue and negotiation. My first two chapters focus on environmental problems surrounding rangeland ecology along the U.S./Mexico b… more
Date: December 2002
Creator: Dinneen, Nathan
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

The relationship between training in learning style adaptation and successful completion of entry-level community college classes.

Description: The purpose of this study was to determine if there was a relationship between training in learning style adaptation and successful completion of community college courses. The rationale for conducting this study was based on the need for students to learn how to adapt their learning style in order to more effectively learn in any situation. It is also important that community colleges implement strategies that assist in student retention. The learning styles of entry-level community college st… more
Date: December 2002
Creator: Ferrell, Dawn M.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Removal of selected water disinfection byproducts, and MTBE in batch and continuous flow systems using alternative sorbents.

Description: A study was conducted to evaluate the sorption characteristics of six disinfection byproducts (DBPs) on four sorbents. To investigate sorption of volatile organic compounds (VOCs), specially designed experimental batch and continuous flow modules were developed. The investigated compounds included: chloroform, 1,2-dichloroethane (DCE), trichloroethylene (TCE), bromodichloromethane (BDCM), methyl tertiary butyl ether (MTBE), bromate and bromide ions. Sorbents used included light weight aggregate… more
Date: December 2002
Creator: Kadry, Ahmed Y.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

The Tone Clock: Peter Schat's System and an Application to His Etudes for Piano and Orchestra, Opus 39

Description: The scope of this study includes relevant background information on Peter Schat and his compositions and process, an explanation of the Tone Clock system and a detailed analysis of one of his compositions, the Etudes for Piano and Orchestra, Opus 39. The intent is to demonstrate how the Tone Clock naturally evolved from the practices of the Second Viennese School and how it relates to both new and existing modern music. The study is divided into five chapters. Chapter 1 presents a brief introdu… more
Date: December 2002
Creator: Petrella, Diane Helfers
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Wisdom and Law: Political Thought in Shakespeare's Comedies

Description: In this study of A Midsummer Night's Dream, The Merchant of Venice, and Measure for Measure I argue that the surface plots of these comedies point us to a philosophic understanding seldom discussed in either contemporary public discourse or in Shakespearean scholarship. The comedies usually involve questions arising from the conflict between the enforcement of law (whether just or not) and the private longings (whether noble or base) of citizens whose yearnings for happiness tend to be sub- or … more
Date: December 2002
Creator: Major, Rafael M.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Application of Thermomechanical Characterization Techniques to Bismuth Telluride Based Thermoelectric Materials

Description: The thermoelectric properties of bismuth telluride based thermoelectric (TE) materials are well-characterized, but comparatively little has been published on the thermomechanical properties. In this paper, dynamic mechanical analysis (DMA) and differential scanning calorimetry data for bismuth telluride based TE materials is presented. The TE materials' tan delta values, indicative of viscoelastic energy dissipation modes, approached that of glassy or crystalline polymers, were greater than ten… more
Date: August 2002
Creator: White, John B.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Breaking Through: A Composition for Symphony Orchestra

Description: Breaking Through is a single-movement composition for symphony orchestra based on a fourteen-note melody. Every harmonic and melodic figure except the bass line is derived from this source melody. The structure of the work is based on a number of musical dichotomies that work on both local and large-scale levels. The local dichotomies contrast consonance with dissonance and ambiguity with clarity (in respect to texture and rhythm). The dichotomy of two-part form versus three-part form and t… more
Date: August 2002
Creator: Dribus, John Alexander
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Changing Privacy Concerns in the Internet Era.

Description: Privacy has always been a respected value regardless of national borders, cultural differences, and time in every society throughout history. This study focuses on the unprecedented changes in the traditional forms of privacy and consequent concerns with regard to invasion of privacy along with the recent emergence and wide use of the Internet. Government intrusion into private domains through the Internet is examined as a major concern. Privacy invasions by Web marketers, hacker threats agains… more
Date: August 2002
Creator: Demir, Irfan
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Computer Crime as a Barrier to Electronic Commerce: New Solutions for Public Law Enforcement.

Description: Electronic commerce was expected to grow exponentially, but the actual rate of growth in recent years has been disappointing. Recent surveys of perceptions of the development of electronic commerce clearly focus our attention on the perception and fear of computer crime as the major cause of this disappointing growth pattern. The thesis critiques existing private law solutions to this problem and argues from a normative theory on “the commons” for the application of new public law enforcement s… more
Date: August 2002
Creator: Temur, Nuri
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

The Cross-Validation of AD/HD Instruments and the Relationship to Neurocognitive and Behavioral Measures

Description: The purpose of this study was twofold: to determine the construct validities of comparable AD/HD instruments that were developed according to our current, DSM-IV classification system for AD/HD; and to identify potential +neurocognitive and socioemotional markers for AD/HD. The sample consisted of 145 children ages 8 to 11 years of age who were diagnosed with Attention Deficit Hyperactivity Disorder (AD/HD), or Central Auditory Processing Disorder (CAPD). Children were administered a battery of… more
Date: August 2002
Creator: Hudson, Christine V.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Developmental Stressors and Associated Coping Skills in the Development of Disordered Eating in College Females

Description: There is a lack of clarity in the current literature in how potential etiological factors interact and result in disordered eating. The purpose of this study was to examine an expanded model of Personality, Social Support, Appraisal/Coping Processes, Abuse History, Internalization of Sociocultural Standards, Psychological Disturbances, and Body Disparagement in the development of disordered eating. The current model was evaluated using 276 women in their transition to college, a time period hig… more
Date: August 2002
Creator: Tripp, Margaret Murphy
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

The Effect of Web-Based Support as an Adjunct to a Self-Help Smoking Cessation Program

Description: For the past quarter century, the public has been educated and warned about the dangers of smoking, and both smokers and health researchers have been in search of cost-effective, smoking cessation programs that will lead to long-term cessation. This study used a randomized experimental design to investigate the effectiveness of adding Web-based support materials to a nationally sponsored self-help smoking intervention. There was no significant increase in abstinence rates nor progression throug… more
Date: August 2002
Creator: Johs-Artisensi, Jennifer Lynn
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Effects of Hedonic and Utilitarian Shopping Satisfaction on Mall Consumption

Description: The modern consumer expects a consumption experience with both hedonic and utilitarian rewards during a single visit to the mall. The orchestrating of both hedonic and utilitarian benefits in one visit challenges mall management and retailers to deliver the maximum shopping experience. This study seeks to reveal relationships among six variables: demographic characteristics, mall shopping orientation, mall perception, hedonic satisfaction, utilitarian satisfaction, and mall consumption. The int… more
Date: August 2002
Creator: Buhrman, Tiffany
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Investigation of Computer Crimes

Description: In this study, the development of the computer related crime will be examined in the first chapter. After a detailed introduction to computer crimes, the most common types of the computer crimes will be examined and the characteristics of the offenders and their motivates will be identified. The general investigation process of the computer crime investigation will be outlined in the second chapter. After attempting to define computer crime, computer criminals and investigation process, a case … more
Date: August 2002
Creator: Erdonmez, Erhan
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

London, Ankara, and Geneva: Anglo-Turkish Relations, The Establishment of the Turkish Borders, and the League of Nations, 1919-1939

Description: This dissertation asserts the British primacy in the deliberations of the League of Nations Council between the two world wars of the twentieth century. It maintains that it was British imperial policy rather than any other consideration that ultimately carried the day in these deliberations. Given, as examples of this paramountcy, are the discussions around the finalization of the borders of the new republic of Turkey, which was created following the collapse of the Ottoman Empire at the end o… more
Date: August 2002
Creator: Stillwell, Stephen J.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Mechanical Properties of Polymer Modified Mortar

Description: The mechanical properties of the polymer-modified mortar are markedly improved over conventional cement mortar. We utilized recycled ABS in powder form and a polymer latex emulsion, polymer percentage ranges from 0 to 25 percent by polymer/cement ratio were investigated. The mechanical properties investigated were compression strength and adhesion strength. Compression strength effects did not have an impact on adhesion strength. Adhesion strength was calculated with pullout testing apparatus … more
Date: August 2002
Creator: Palos, Artemio
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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