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open access

Density, Distribution and Habitat Requirements for the Ozark Pocket Gopher (Geomys Bursarius Ozarkensis)

Description: A new subspecies of the plains pocket gopher (Geomys bursarius ozarkensis), located in the Ozark Mountains of north central Arkansas, was recently described by Elrod et al. (2000). Current range for G. b. ozarkensis was established, habitat preference was assessed by analyzing soil samples, vegetation and distance to stream and potential pocket gopher habitat within the current range was identified. A census technique was used to estimate a total density of 3, 564 pocket gophers. Through automo… more
Date: May 2004
Creator: Kershen, Audrey Allbach
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Carbon Nanotube/Microwave Interactions and Applications to Hydrogen Fuel Cells.

Description: One of the leading problems that will be carried into the 21st century is that of alternative fuels to get our planet away from the consumption of fossil fuels. There has been a growing interest in the use of nanotechnology to somehow aid in this progression. There are several unanswered questions in how to do this. It is known that carbon nanotubes will store hydrogen but it is unclear how to increase that storage capacity and how to remove this hydrogen fuel once stored. This document off… more
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Date: May 2004
Creator: Imholt, Timothy James
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Barrier and Long Term Creep Properties of Polymer Nanocomposites.

Description: The barrier properties and long term strength retention of polymers are of significant importance in a number of applications. Enhanced lifetime food packaging, substrates for OLED based flexible displays and long duration scientific balloons are among them. Higher material requirements in these applications drive the need for an accurate measurement system. Therefore, a new system was engineered with enhanced sensitivity and accuracy. Permeability of polymers is affected by permeant solubility… more
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Date: December 2004
Creator: Ranade, Ajit
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

War and peace: Towards an understanding of the theology of jihad.

Description: The growing number of terrorist attacks waged by Islamic fundamentalists has led to an increasing desire to understand the nature of jihad. These attacks have led to a renewed sense of urgency to find answers to such questions as why these attacks occur, and who they are waged against. Towards this end I turn to examine the political philosophy of four Muslim theologians. Specifically I look at the political philosophy of Sayyid Qutb, Shah Walai Allah Dihlawai, Ibn Rushd (Averroes), and Muha… more
Date: December 2004
Creator: Shaikh, Erum M.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Voci Lontani for flute, trumpet, percussion, piano, and string quartet: Critical essay and score.

Description: This project consists of an original composition, Voci Lontani, and a critical essay about the composition. In this piece, the idea of musical simultaneity is explored. Therefore, the piece focuses on the idea of contrast: between measured rhythms and indeterminate rhythms, between tonality and atonality, and between musics in separate tempos. In order to explore the significance of musical simultaneity, four important compositional concepts-the simultaneous juxtaposition of different musics, … more
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Date: August 2004
Creator: Goto, Yo
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Gender differences in college choice, aspirations, and self-concept among community college students in science, mathematics, and engineering.

Description: Educational researchers, practitioners, and policy makers have long expressed their concern that gender disparity of academic performance and participation in science and mathematics education continues to increase with educational progress of students through the pipeline. Educational and occupational aspirations, high school experience, external support from family members and significant others appear to be influential factors that develop strong self-concept among female students who aspire… more
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Date: August 2004
Creator: Starobin, Soko Suzuki
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Application of Cultured Neuronal Networks for Use as Biological Sensors in Water Toxicology and Lipid Signaling.

Description: This dissertation research explored the capabilities of neuronal networks grown on substrate integrated microelectrode arrays in vitro to be applied to toxicological research and lipid signaling. Chapter 1 details the effects of chlorine on neuronal network spontaneous electrical activity and pharmacological sensitivity. This study demonstrates that neuronal networks can maintain baseline spontaneous activity, and respond normally to pharmacological manipulations in the present of three times… more
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Date: August 2004
Creator: Dian, Emese Emöke
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Modeling wild type and mutant glutathione synthetase.

Description: Glutathione syntethase (GS) is an enzyme that belongs to the ATP-grasp superfamily and catalyzes the second step in the biosynthesis of glutathione. GS has been purified and sequenced from a variety of biological sources; still, its exact mechanism is not fully understood. Four highly conserved residues were identified in the binding site of human GS. Additionally, the G-loop residues that close the active site during catalysis were found to be conserved. Since these residues are important for … more
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Date: August 2004
Creator: Dinescu, Adriana
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Narcissistic traits and parenting style: A closer look at maladaptive parenting through parent-child observations, parent self-report, and child self-report.

Description: The thrust of this paper was two-fold, 1) to confirm a 2-factor model of narcissism in women, and 2) to examine the relationship between narcissistic traits in mothers and several variables associated with parenting efficacy. Participants included 193 mother-child dyads. A 2-factor model of narcissism was confirmed in the present sample of mothers, suggesting that narcissistic traits in women may be manifested in distinct Overt and Covert forms. Contrary to expectations, Covert Narcissistic tra… more
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Date: August 2004
Creator: Collins, Michelle
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Dallas as Region: Mark Lemmon's Gothic Revival Highland Park Presbyterian Church

Description: Informed by the methodology utilized in Peter Williams's Houses of God: Region, Religion, and Architecture in the United States (1997), the thesis examines Mark Lemmon's Gothic Revival design for the Highland Park Presbyterian Church (1941) with special attention to the denomination and social class of the congregation and the architectural style of the church. Beginning with the notion that Lemmon's church is more complex than an expression of the Southern cultural region defined by Williams, … more
Date: August 2004
Creator: Bagley, Julie Arens
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Evaluation of virulence in wild type and pyrimidine auxotrophs of Pseudomonas aeruginosa using the eukaryotic model system Caenorhabditis elegans.

Description: The human opportunistic pathogen, Pseudomonas aeruginosa PAO1, has been shown to kill the nematode Caenorhabditis elegans. C. elegans has been a valuable model for the study of bacterial pathogenesis, and has reinforced the notion that common virulence and host defense mechanisms exist. Recently, the pyrimidine pathway was shown to regulate virulence levels. Therefore, mutations in the pyrimidine pathway of PAO1 showed decrease virulence in the nematode. When starving the nematode, bacterial… more
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Date: August 2004
Creator: Anvari, Sara
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Study of Conductance Quantization by Cross-Wire Junction

Description: The thesis studied quantized conductance in nanocontacts formed between two thin gold wires with one of the wires coated by alkainthiol self assembly monolayers (SAM), by using the cross-wire junction. Using the Lorenz force as the driving force, we can bring the two wires in contact in a controlled manner. We observed conductance with steps of 2e2 / h. The conductance plateaus last several seconds. The stability of the junction is attributed to the fact that the coating of SAM improves the st… more
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Date: May 2004
Creator: Zheng, Tao
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Electrodeposition of adherent copper film on unmodified tungsten.

Description: Adherent Cu films were electrodeposited onto polycrystalline W foils from purged solutions of 0.05 M CuSO4 in H2SO4 supporting electrolyte and 0.025 M CuCO3∙Cu(OH)2 in 0.32 M H3BO3 and corresponding HBF4 supporting electrolyte, both at pH = 1. Films were deposited under constant potential conditions at voltages between -0.6 V and -0.2 V vs Ag/AgCl. All films produced by pulses of 10 s duration were visible to the eye, copper colored, and survived a crude test called "the Scotch tape test", … more
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Date: May 2004
Creator: Wang, Chen
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Synthesis of cubic boron nitride thin films on silicon substrate using electron beam evaporation.

Description: Cubic boron nitride (cBN) synthesis has gained lot of interest during the past decade as it offers outstanding physical and chemical properties like high hardness, high wear resistance, and chemical inertness. Despite of their excellent properties, every application of cBN is hindered by high compressive stresses and poor adhesion. The cost of equipment is also high in almost all the techniques used so far. This thesis deals with the synthesis of cubic phase of boron nitride on Si (100) wafers … more
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Date: May 2004
Creator: Vemuri, Prasanna
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Partner: UNT Libraries

Richard Strauss's Duett-Concertino: A Study of the Programmatic Elements for the Performer

Description: Richard Strauss's Duett-Concertino for Clarinet and Bassoon with Strings and Harp, AV 147 was one of the last works written by this celebrated composer. This double concerto has been largely unrecognized by performers and scholars until a recent surge in recorded performances. Some factors that hinder performances of the Duett-Concertino include unusual scoring and difficult rhythmic passages, as well as a lack of acknowledgement or understanding of the programmatic elements represented in th… more
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Date: May 2004
Creator: Turley, Sarah Leigh
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Supplemental Studies for Mastering Extended Techniques in Three Late Twentieth-Century Works for Solo Trombone: Luciano Berio's Sequenza V, Folke Rabe's Basta and Mark Phillips' T. Rex, Together with Three Recitals of Selected Works by Wagenseil, Grøndahl, Gotkovsky, and Others

Description: Many, if not most, student trombonists have perhaps had little or no previous experience with "extended techniques"-novel or unconventional modes of sound production. To address this deficiency of experience, this document sets forth a progressive sequence of descriptive explanations and supplementary studies, which are specifically designed to assist trombonists in mastering the particular extended techniques that will prepare them to perform three of the most popular late Twentieth-Century pi… more
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Date: May 2004
Creator: Scott, Deb
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Pedagogical style and influence of Nadia Boulanger on music for wind symphony, an analysis of three works by her students: Copland, Bassett, and Grantham.

Description: An examination of the influences on twentieth-century wind music would be incomplete without the consideration of composer, organist, pianist, conductor, teacher, and critic Nadia Boulanger (1887-1979). Students from the United States began studying with Boulanger between World War I and World War II, and continued to travel to study with her for over fifty years. The respect awarded this legendary French woman was gained as a result of her effectiveness as a teacher, her influence on the devel… more
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Date: May 2004
Creator: McCallum, Wendy M.
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Partner: UNT Libraries

Passivation effects of surface iodine layer on tantalum for the electroless copper deposition.

Description: The ability to passivate metallic surfaces under non-UHV conditions is not only of fundamental interests, but also of growing practical importance in catalysis and microelectronics. In this work, the passivation effect of a surface iodine layer on air-exposed Ta for the copper electroless deposition was investigated by X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). Although the passivation effect was seriously weakened by the prolonged air exposure, iodine passiv… more
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Date: May 2004
Creator: Liu, Jian
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Cyanide Assimilation in Pseudomonas Fluorescens: Characterization of Cyanide Oxygenase as a Pterin-Dependent Multicomponent Enzyme Complex

Description: Cyanide utilization in Pseudomonas fluorescens NCIMB 11764 occurs via oxidative conversion to carbon dioxide and ammonia, the latter satisfying the nitrogen requirement. Substrate attack is initiated by an enzyme referred to as cyanide oxygenase (CNO), previously shown to require components in both high (H) (>30 kDa) and low (L) (<10 kDa) molecular weight cell fractions. In this study, tetrahydrobiopterin (H4biopterin) was identified as a cofactor in fraction L, thus making CNO appear as a pte… more
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Date: May 2004
Creator: Fernandez, Ruby
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Partner: UNT Libraries
open access

Analysis of Web Services on J2EE Application Servers

Description: The Internet became a standard way of exchanging business data between B2B and B2C applications and with this came the need for providing various services on the web instead of just static text and images. Web services are a new type of services offered via the web that aid in the creation of globally distributed applications. Web services are enhanced e-business applications that are easier to advertise and easier to discover on the Internet because of their flexibility and uniformity. In a re… more
Date: May 2004
Creator: Gosu, Adarsh Kumar
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Bioavailability and toxicity of 2,4,6-trinitrotoluene in sediment.

Description: TNT (2,4,6-trinitrotoluene) is a persistent contaminant at many military installations and poses a threat to aquatic ecosystems. Data from environmental fate and toxicity studies with TNT revealed that sediment toxicity test procedures required modification to accurately assess sediment TNT toxicity. Key modifications included aging TNT-spiked sediments 8-14 d, basing lethal dose on measured sediment concentrations of the molar sum of TNT and its main nitroaromatic (NA) transformation product… more
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Date: May 2004
Creator: Conder, Jason M.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

The Effect of Breastfeeding Education on Breastfeeding Initiation Rates Among Teenage Mothers

Description: The purpose of this study was to examine the effect of a breastfeeding education program on breastfeeding initiation rates, breastfeeding knowledge, and attitude towards breastfeeding among teenage mothers at an urban school for pregnant and parenting teens. Breastfeeding initiation rose from 35.7% in the control group to 85.2% in the treatment group. The mean score on the Breastfeeding Knowledge Subscale was significantly higher for the treatment group but not the control group. There was not … more
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Date: May 2004
Creator: Brown, Amber L.
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Hopfield Networks as an Error Correcting Technique for Speech Recognition

Description: I experimented with Hopfield networks in the context of a voice-based, query-answering system. Hopfield networks are used to store and retrieve patterns. I used this technique to store queries represented as natural language sentences and I evaluated the accuracy of the technique for error correction in a spoken question-answering dialog between a computer and a user. I show that the use of an auto-associative Hopfield network helps make the speech recognition system more fault tolerant. I also… more
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Date: May 2004
Creator: Bireddy, Chakradhar
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The Effect of Information Literacy Instruction on Library Anxiety Among International Students

Description: This study explored what effect information literacy instruction (ILI) may have on both a generalized anxiety state and library anxiety specifically. The population studied was international students using resources in a community college. Library anxiety among international students begins with certain barriers that cause anxiety (i.e., language/communication barriers, adjusting to a new education/library system and general cultural adjustments). Library Anxiety is common among college student… more
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Date: May 2004
Creator: Battle, Joel C.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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