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Design and Synthesis of Novel Cage-Functionalized Crown Ethers: A New Class of Ag Complexants. (open access)

Design and Synthesis of Novel Cage-Functionalized Crown Ethers: A New Class of Ag Complexants.

Three different types of cage crown ethers have been prepared and their complexation properties with Ag(I) have been studied. Atomic absorption, fluorescence quenching, and UV absorption have been used to study the interaction between the hosts (cage crown ethers) and guests (Ag+). For the cage-annulated crown ethers that contain aromatic rings, cation-π and π-π interactions may contribute significantly to the overall complexation ability of the host system. Piperazine groups may cooperate, and the piperazine nitrogen atoms provide unshared electrons, which may form a complex with Ag+. In addition, relatively soft donor atoms (e.g., Br) are well-suited for complexation with Ag+, which is a softer Lewis acid than alkali metal cations.
Date: August 2003
Creator: Lai, Huiguo
System: The UNT Digital Library
Assessing Measurement Equivalence of the English and Spanish Versions on an Employee Attitude Survey Using Multigroup Analysis in Structural Equation Modeling. (open access)

Assessing Measurement Equivalence of the English and Spanish Versions on an Employee Attitude Survey Using Multigroup Analysis in Structural Equation Modeling.

The study utilized the covariance structure comparison methodology - Multigroup Analysis in Structural Equation Modeling - evaluating measurement equivalence of English and Spanish versions of an employee opinion survey. The concept of measurement equivalence was defined as consisting of four components: sample equivalence, semantic equivalence, conceptual equivalence and scalar equivalence. The results revealed that the two language versions of the survey exhibited acceptable measurement equivalence across five survey dimensions Communications, Supervision, Leadership, Job Content & Satisfaction and Company Image & Commitment. Contrary to the study second hypothesis, there was no meaningful difference in opinion scores between English-speaking and Spanish-speaking respondents on the latent construct of Job Content & Satisfaction.
Date: August 2003
Creator: Koulikov, Mikhail
System: The UNT Digital Library
No Way Out: A Historical Documentary (open access)

No Way Out: A Historical Documentary

No Way Out: A Historical Documentary is the written companion to a forty-minute documentary film entitled "No Way Out". The film deals with a 1974 inmate standoff at a prison in Huntsville, Texas known as the Carrasco Incident. The film examines the prison takeover through the eyes of those who lived through it. Composed of five interviews, "No Way Out" is a compilation of various points of view ranging from former hostages, members of the press, and law enforcement. The written companion for this piece discusses the three phases of the production for this film. These chapters are designed to share with the reader the various intricacies of documentary filmmaking. The thesis also explores theoretical issues concerning collective memory, coping behavior, and the ethics of historical documentary filmmaking.
Date: August 2003
Creator: Holder, Elizabeth Suzanne
System: The UNT Digital Library
Building an Intelligent Filtering System Using Idea Indexing (open access)

Building an Intelligent Filtering System Using Idea Indexing

The widely used vector model maintains its popularity because of its simplicity, fast speed, and the appeal of using spatial proximity for semantic proximity. However, this model faces a disadvantage that is associated with the vagueness from keywords overlapping. Efforts have been made to improve the vector model. The research on improving document representation has been focused on four areas, namely, statistical co-occurrence of related items, forming term phrases, grouping of related words, and representing the content of documents. In this thesis, we propose the idea-indexing model to improve document representation for the filtering task in IR. The idea-indexing model matches document terms with the ideas they express and indexes the document with these ideas. This indexing scheme represents the document with its semantics instead of sets of independent terms. We show in this thesis that indexing with ideas leads to better performance.
Date: August 2003
Creator: Yang, Li
System: The UNT Digital Library
Origami in Fashion (open access)

Origami in Fashion

The focus of my work is the incorporation of three-dimensional sculptural forms into the design of my garments while still maintaining the functional purpose of the garment. Origami paper folding is the inspiration for the sculptural forms. The major endeavor was to explore and solve the relationship between the organic human forms and the geometric forms created by the origami paper folds. This presented a challenge of exact precision. During this process, I experimented with different fabrics, which can accommodate the sharp creases and retain the shape. A variety of folding patterns were also explored. Although the design should be innovative and creative, the final garment must be wearable and comfortable.
Date: August 2003
Creator: Wu, Chia-Lin
System: The UNT Digital Library

Our enemy, ourselves: Political conspiracy in American cinema, 1970-present.

Access: Use of this item is restricted to the UNT Community
This thesis is an examination of "paranoid conspiracy" films, a film noir subgenre that emerged in mainstream American cinema in the early 1970s and turns on vast, shadowy conspiracies located within U.S. "power structures" (government agencies, the military, the media) and directed against the American public. Specifically, it focuses on the emergence of these films in the 1970s, their almost complete disappearance during the Reagan presidency, and subsequent reemergence in the early 1990s. Placing representative texts in the context of U.S. political and social reality of the last three decades, it analyzes the relationship between the conspiracy theory genre, the "crisis of confidence" in the American society, and the process of formation of American national identity.
Date: August 2003
Creator: Budziszewski, Przemyslaw
System: The UNT Digital Library

The Pink Papers

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The Pink Papers is a collection of three short stories and a novel in progress consisting of four chapters. Each piece is a work of original fiction. The preface addresses the female writer and the female voice in fiction. "Broken Clock" and "Pink Paper" are the stories of two girls coping with endometriosis. "Normal Capacity" looks at the loss of a dream through the eyes of a first-year law student. The novel in progress, titled Blanchard, OK, is set in a rural farming town in Oklahoma. The novel tells the stories of 24-year-old Robin, her Aunt Paula, and Paula's boyfriend, Sam.
Date: August 2003
Creator: Blagg, Caroline
System: The UNT Digital Library
New Surveillance Technologies and the Invasion of Privacy Rights (open access)

New Surveillance Technologies and the Invasion of Privacy Rights

Definition of privacy has changed by the changes and improvements in information and surveillance technologies. These changes and improvement need new legal decisions for new kinds of privacy invasions. This study explores the scope of privacy right, particularly when a technological surveillance has occurred by law enforcement agencies. It focuses in particular on increasing law enforcements' surveillance technologies and devices that have the potential to impact citizens' information privacy. These increasing changes in surveillance technologies have important implications both for law enforcements and citizens. This study also discusses increasing law enforcement surveillance for the public's security, changes of the laws that allow law enforcements to use new surveillance powers as a war on terrorism, and the citizens concerns of information privacy. A particular attention is given to the recent public opinion surveys which show citizens' increasing privacy concerns. Finally, a set of recommendations to figure out security-privacy debate and reduce the privacy concerns of the citizens is offered.
Date: August 2003
Creator: Simsek, Yilmaz
System: The UNT Digital Library

Bounded Dynamic Source Routing in Mobile Ad Hoc Networks

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A mobile ad hoc network (MANET) is a collection of mobile platforms or nodes that come together to form a network capable of communicating with each other, without the help of a central controller. To avail the maximum potential of a MANET, it is of great importance to devise a routing scheme, which will optimize upon the performance of a MANET, given the high rate of random mobility of the nodes. In a MANET individual nodes perform the routing functions like route discovery, route maintenance and delivery of packets from one node to the other. Existing routing protocols flood the network with broadcasts of route discovery messages, while attempting to establish a route. This characteristic is instrumental in deteriorating the performance of a MANET, as resource overhead triggered by broadcasts is directly proportional to the size of the network. Bounded-dynamic source routing (B-DSR), is proposed to curb this multitude of superfluous broadcasts, thus enabling to reserve valuable resources like bandwidth and battery power. B-DSR establishes a bounded region in the network, only within which, transmissions of route discovery messages are processed and validated for establishing a route. All route discovery messages reaching outside of this bounded region are dropped, thus …
Date: August 2003
Creator: George, Glyco
System: The UNT Digital Library

Combating Corruption: A Comparison of National Anti-Corruption Efforts

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The primary goal of this thesis is to provide a comparative analysis of the institutional and organizational mechanisms designed to monitor and control political corruption at the national level. The paper will provide comparisons of these arraignments and control systems across three nations. The thesis will identify differences across countries in terms of organizational and institutional political corruption control mechanisms, and use the CPI index to suggest and identify those control mechanisms that appear to be present in nations with low CPI measurements. Finally, the thesis will conclude with the discussion concerning the future prospects for controlling political corruption in Turkey based on the comparative analysis described above.
Date: August 2003
Creator: Turer, Ahmet
System: The UNT Digital Library

Godot in Earnest: Beckettian Readings of Wilde

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Critics and audiences alike have neglected the idea of Wilde as a precursor to Beckett. But I contend that a closer look at each writer's aesthetic and philosophic tendencies-for instance, their interest in the fluid nature of self, their understanding of identity as a performance, and their belief in language as both a way in and a way out of stagnancy -will connect them in surprising and highly significant ways. This thesis will focus on the ways in which Wilde prefigures Beckett as a dramatist. Indeed, many of the themes that Beckett, free from the constraints of a censor and from the societal restrictions of Victorian England, unabashedly details in his drama are to be found residing obscurely in Wilde. Understanding Beckett's major dramatic themes and motifs therefore yields new strategies for reading Wilde.
Date: August 2003
Creator: Tucker, Amanda
System: The UNT Digital Library

Secret Key Agreement without Public-Key Cryptography

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Secure communication is the primary challenge in today's information network. In this project an efficient secret key agreement protocol is described and analyzed along with the other existing protocols. We focus primarily on Leighton and Micali's secret-key agreement without the use of public-key encryption techniques. The Leighton-Micali protocol is extremely efficient when implemented in software and has significant advantages over existing systems like Kerberos. In this method the secret keys are agreed upon using a trusted third party known as the trusted agent. The trusted agent generates the keys and writes them to a public directory before it goes offline. The communicating entities can retrieve the keys either from the online trusted agent or from the public directory service and agree upon a symmetric-key without any public-key procedures. The principal advantage of this method is that the user verifies the authenticity of the trusted agent before using the keys generated by it. The Leighton-Micali scheme is not vulnerable to the present day attacks like fabrication, modification or denial of service etc. The Leighton-Micali protocol can be employed in real-time systems like smart cards. In addition to the security properties and the simplicity of the protocol, our experiments show that in …
Date: August 2003
Creator: Surapaneni, Smitha
System: The UNT Digital Library

Paying for the Arts: Fundraising Methods for Secondary Theater Programs

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This project in lieu of thesis identifies successful methods of fundraising utilized by a sampling of three secondary theater arts programs from North Texas. Programs were evaluated on their ability to fund their programs and provide a quality arts education for their students. Guidelines for fundraising were developed that allow secondary theater programs to flourish without placing an additional burden on already overextended tax system. Findings were framed in a Marxist socio-economic context, seeking to find some relation between supply-side economics and the failure of certain communities to offer quality arts programs. Marxist philosophy, emphasizing the values of community and shared wealth, served to frame findings in the context of arts programs serving and enhancing their own communities.
Date: August 2003
Creator: Soward, David B.
System: The UNT Digital Library
Modeling Complex Forest Ecology in a Parallel Computing Infrastructure (open access)

Modeling Complex Forest Ecology in a Parallel Computing Infrastructure

Effective stewardship of forest ecosystems make it imperative to measure, monitor, and predict the dynamic changes of forest ecology. Measuring and monitoring provides us a picture of a forest's current state and the necessary data to formulate models for prediction. However, societal and natural events alter the course of a forest's development. A simulation environment that takes into account these events will facilitate forest management. In this thesis, we describe an efficient parallel implementation of a land cover use model, Mosaic, and discuss the development efforts to incorporate spatial interaction and succession dynamics into the model. To evaluate the performance of our implementation, an extensive set of simulation experiments was carried out using a dataset representing the H.J. Andrews Forest in the Oregon Cascades. Results indicate that a significant reduction in the simulation execution time of our parallel model can be achieved as compared to uni-processor simulations.
Date: August 2003
Creator: Mayes, John
System: The UNT Digital Library
Plan Types and Their Effect on Retirement Patterns (open access)

Plan Types and Their Effect on Retirement Patterns

In 1993, 38.9 million people were covered by a 401(k) plan, up from 7.1 million in 1983. The rapid growth of 401(k) and other defined contribution pension plans may alter retirement patterns of older workers. Previous research showed that the spread of defined benefit plans, with sharp age-related incentives first discouraging and later encouraging retirement, contributed to the early retirement trend of past decades. Defined contribution plans differ along several dimensions, especially in their smooth rate of pension wealth accrual. Data from the Health and Retirement Study show that retirement patterns have begun to change as defined contribution plans have spread. Estimates indicate that the financial incentives in defined benefit pensions lead people to retire almost two years earlier, compared to people with defined contribution plans.
Date: August 2003
Creator: Marrone, Mickey M.
System: The UNT Digital Library

Register Unification in Light of Twentieth-Century Vocal Pedagogy

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The registers of the singing voice, as commonly understood by singers, refer to the different vocal qualities induced by adjustments at the level of the larynx and of the vocal tract. This explains why register unification can be approached either one or a combination of the following procedures: (1) resonance alignment through vowel modification, (2) register alignment through intensity exercises. The wide-spread acceptance of vowel modification has made singers reluctant in exploring other avenues of register development. If registers are laryngeally derived, there should be another way of register unification, which directly addresses the coordination of the laryngeal muscles. In support of this argument, this thesis investigates the teaching practices of a group of twentieth-century American voice teachers, who rely on intensity manipulation as the primary means for enhancing the register adjustments. Intensity exercises such as the messa di voce has long been practiced in historical pedagogy, but it is not until now that voice science confirmed its significance in register coordination.
Date: August 2003
Creator: Tan, Haidee Lynn C.
System: The UNT Digital Library
Analysis and expression of the cotton gene for the D-12 fatty acid desaturases 2-4 (FAD2-4) (open access)

Analysis and expression of the cotton gene for the D-12 fatty acid desaturases 2-4 (FAD2-4)

A genomic clone containing a 16.9-kb segment of cotton DNA was found to encompass a D-12 fatty acid desaturases (FAD2-4) gene. The FAD2-4 gene has a single, large intron of 2,780 bp in its 5'-untranslated region, just 12 bp upstream from the ATG initiation codon of the FAD2-4 opening reading frame. A number of prospective promoter elements, including several light-responsive sequences, occur in the 5'-flanking region. The coding region of the gene is 1155 bp with no introns, and would encode a FAD2-4 polypeptide of 384 amino acids. The putative protein had four membrane-spanning helices, hallmarks of an integral membrane protein, and would probably be located in the endoplasmic reticulum. The FAD2-4 gene is indeed a functional gene, since yeast cells transformed with a plasmid containing the coding region of the gene synthesize an appreciable amount of linoleic acid (18:2), not normally made in wild-type yeast cells. The FAD2-4 gene has many structural similarities to the cotton FAD2-3 gene that was also analyzed in this laboratory.
Date: August 2003
Creator: Park, Stacy J.
System: The UNT Digital Library
Symptoms of anxiety and depression in children and adolescents: The impact of residential fire. (open access)

Symptoms of anxiety and depression in children and adolescents: The impact of residential fire.

This study examined symptoms of anxiety and depression in 99 children and adolescents following a residential fire. Children and their parents completed self-administered questionnaires regarding the fire and their current functioning. The most commonly experienced symptoms were worry/ oversensitivity, anhedonia, negative mood, and fear of failure and criticism. There were no significant ethnic differences across symptomology. Exposure was directly related to parental report of child internalizing behaviors, whereas loss was unrelated to symptoms. Level of support (general and fire related) and active coping were directly associated with positive child adjustment. The impact of negative life events was related to poorer functioning. Overall, a child's environment and coping strategy appear to be the best predictors of adjustment following a residential fire.
Date: August 2003
Creator: Conde, Joann M.
System: The UNT Digital Library
Performance Analysis of Wireless Networks with QoS Adaptations (open access)

Performance Analysis of Wireless Networks with QoS Adaptations

The explosive demand for multimedia and fast transmission of continuous media on wireless networks means the simultaneous existence of traffic requiring different qualities of service (QoS). In this thesis, several efficient algorithms have been developed which offer several QoS to the end-user. We first look at a request TDMA/CDMA protocol for supporting wireless multimedia traffic, where CDMA is laid over TDMA. Then we look at a hybrid push-pull algorithm for wireless networks, and present a generalized performance analysis of the proposed protocol. Some of the QoS factors considered include customer retrial rates due to user impatience and system timeouts and different levels of priority and weights for mobile hosts. We have also looked at how customer impatience and system timeouts affect the QoS provided by several queuing and scheduling schemes such as FIFO, priority, weighted fair queuing, and the application of the stretch-optimal algorithm to scheduling.
Date: August 2003
Creator: Dash, Trivikram
System: The UNT Digital Library
Presencing Absence (open access)

Presencing Absence

This thesis is a 'big-picture' look at the course of Western philosophy and its eventual arrival at ideas that look remarkably similar to the revelations of Guatama Buddha 2500 years ago. I look at the roots of how the West has understood itself and understood "being" through the centuries and at the revolutions in thought that took place in the 20th century. I look more closely at 20th century thinkers to demonstrate how their thinking begins to align with the ancient insights of Eastern philosophy, particularly the notions of a prevailing emptiness as "ground" of Being and of the fallacy of the individual subject. I also look at how some 20th century artists have engaged with these new ideas. I see generally two responses to the postmodern (post-subject) position: that of a play of surfaces, such as in the work of Andy Warhol and the philosophy of Jean Baudrillard; and that of an embracing of absence, presented in the philosophy of Martin Heidegger and the works of such artists as John Cage, George Brecht, Pauline Oliveros, Bill Wegman, David Hammons and others.
Date: August 2003
Creator: McMullen, Tracy
System: The UNT Digital Library
British and Indian Influences in the Identities and Literature of Mark Tully and Ruskin Bond (open access)

British and Indian Influences in the Identities and Literature of Mark Tully and Ruskin Bond

With globalization and modernization, increasingly people are influenced by multiple cultures. This paper examines the case of two authors, Mark Tully and Ruskin Bond, who were born in India shortly before India's Independence (1947). Both had British parents, but one considers himself Indian while the other has retained his British identity. The focus of this paper is how and why this difference has occurred and how it has influenced their writing. Both Tully and Bond write short stories about India and Indians, particularly the small towns and villages. Their reasons for writing, however, are very different. Tully writes to achieve social change, while Bond writes because he loves to write.
Date: August 2003
Creator: Lakhani, Brenda
System: The UNT Digital Library
Attentional Focus Strategies of Multi-Sport Athletes. (open access)

Attentional Focus Strategies of Multi-Sport Athletes.

The purpose of this study was to determine (a) the attentional focus strategies used by triathletes during the three stages of an Olympic distance triathlon, (b) if level of experience influences the attentional focus strategies used by triathletes, and (c) whether there is a relationship between athletes finishing times and the attentional strategies used in each stage of the race. Triathletes (N = 160) completed the Triathlon Attentional Focus Inventory, which measured association and dissociation during the swim, bike, and run. One-way ANOVAs revealed significant differences between the athletes' level of experience and the attentional strategies used, as well as differences between the athletes overall race time and the attentional strategies used during each stage of the triathlon. Athletes with more experience associated more during the race, whereas athletes with less experience dissociated more throughout the race.
Date: August 2003
Creator: Werner, Sara M.
System: The UNT Digital Library
Tele: Using Vernacular Performance Practices in an Eight-Channel Environment (open access)

Tele: Using Vernacular Performance Practices in an Eight-Channel Environment

Examines the use of vernacular, country guitar styles in an electro-acoustic environment. Special attention is given to performance practices and explanation of techniques. Electro-acoustic techniques-including sound design and spatialization-are given with sonogram analyses and excerpts from the score. Compositional considerations are contrasted with those of Mario Davidovsky and Jean-Claude Risset with special emphasis on electro-acoustic approaches. Contextualization of the piece in reference to other contemporary, electric guitar music is shown with reference to George Crumb and Chiel Meijering.
Date: August 2003
Creator: Welch, Chapman
System: The UNT Digital Library

Integrating Concepts in Modern Molecular Biology into a High School Biology Curriculum

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More so than any other science in the past several decades, Biology has seen an explosion of new information and monumental discoveries that have had a profound impact on much more than the science itself. Much of this has occurred at the molecular level. Many of these modern concepts, ideas, and technologies, as well as their historical context, can be easily understood and appreciated at the high school level. Moreover, it is argued here that the integration of this is critical for making biology relevant as a modern science. A contemporary high school biology curriculum should adequately reflect this newly acquired knowledge and how it has already has already begun to revolutionize medicine, agriculture, and the study of biology itself. This curriculum provides teachers with a detailed framework for integrating molecular biology into a high school biology curriculum. It is not intended to represent the curriculum for an entire academic year, but should be considered a significant component. In addition to examining key concepts and discoveries, it examines modern molecular techniques, their applications, and their relevance to science and beyond. It also provides several recommended labs and helpful protocols.
Date: August 2003
Creator: Parker, Timothy P.
System: The UNT Digital Library