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 Collection: UNT Theses and Dissertations
Bounded Dynamic Source Routing in Mobile Ad Hoc Networks

Bounded Dynamic Source Routing in Mobile Ad Hoc Networks

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Date: August 2003
Creator: George, Glyco
Description: 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 ...
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New Surveillance Technologies and the Invasion of Privacy Rights

New Surveillance Technologies and the Invasion of Privacy Rights

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Date: August 2003
Creator: Simsek, Yilmaz
Description: 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.
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Perceived value of journals for academic prestige, general reading and classroom use: A study of journals in educational and instructional technology.

Perceived value of journals for academic prestige, general reading and classroom use: A study of journals in educational and instructional technology.

Date: May 2003
Creator: Bray, Kaye Evitt
Description: Conducting research, evaluating research, and publishing scholarly works all play an extremely prominent role for university faculty members. Tenure and promotion decisions are greatly influenced by the perceived value of publications as viewed by members of faculty evaluation committees. Faculty members seeking tenure may be limited to publishing in a limited group of journals perceived to be valuable by members of an academic committee. This study attempted to determine the value of various kinds of periodicals (journals, magazines, and e-journals), based on three principal criteria, as perceived by professionals (university faculty, K-12 practitioners, and corporate trainers) in the educational/instructional technology (E/IT) field. The criteria for journal evaluation were Academic Prestige, General Reading, and Classroom Use. The perceived value of journals based on each criterion was compared to determine any significant differences. Members of the Association for Educational Communications and Technology (AECT) were asked to rate 30 journals in the E/IT field using the three criteria. Statistically significant differences were found among ratings in 63% of the journals. The statistical analyses indicated that differences in the perceived value of journals among E/IT professionals across the three criteria (Academic Prestige, General Reading, and Classroom Use) were statistically significant. It is also noted ...
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Tele: Using Vernacular Performance Practices in an Eight-Channel Environment

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

Date: August 2003
Creator: Welch, Chapman
Description: 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.
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Middle Men: Establishing Non-Anglo Masculinity in Southwestern Literature

Middle Men: Establishing Non-Anglo Masculinity in Southwestern Literature

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Date: August 2003
Creator: King, Charla
Description: By examining southwestern masculinity from three separate lenses of cultural experience, Mexican American, Native American and female, this thesis aims to acknowledge the blending of masculinities that is taking place in both the fictitious and factual southwest. Long gone are the days when the cowboys chased down the savage Indians or the Mexican bandits. Southwestern literature now focuses on how these different cultures and traditions can re-construct their masculinities in a way that will be beneficial to all. The southwest is a land of borders and liminal spaces between the United States and Mexico, between brown and white, legal and illegal. All of these borders converge here to create the last American frontier. These converging borders also encompass converging traditions, cultures, and genders. By blending the cowboy, the macho, and the warrior, perhaps these Southwestern writers can construct a liminal masculinity more representative of the southwest itself.
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Synthesis and X-ray Diffraction Structure of 8,9-Dichloropyrrolo[1,2-a]perimidin-10-one

Synthesis and X-ray Diffraction Structure of 8,9-Dichloropyrrolo[1,2-a]perimidin-10-one

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Date: August 2003
Creator: Chen, Tao
Description: Treatment of dichloromaleic anhydride and 1,8-diaminonaphthalene in either benzene or toluene under refluxing conditions gives low yields of the new heterocyclic compound 8,9-dichloropyrrolo[1,2-a]perimidin-10-one. This product has been isolated and characterized in solution by NMR, IR, and UV/vis spectroscopies, and the solid-state structure of 8,9-dichloropyrrolo[1,2-a]perimidin-10-one has been established by X-ray crystallography. The nature of the HOMO and LUMO levels of 8,9-dichloropyrrolo[1,2-a]perimidin-10-one has been studied by extended Hückel molecular orbital calculations.
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Resource Efficient and Scalable Routing using Intelligent Mobile Agents

Resource Efficient and Scalable Routing using Intelligent Mobile Agents

Date: May 2003
Creator: Amin, Kaizar Abdul Husain
Description: Many of the contemporary routing algorithms use simple mechanisms such as flooding or broadcasting to disseminate the routing information available to them. Such routing algorithms cause significant network resource overhead due to the large number of messages generated at each host/router throughout the route update process. Many of these messages are wasteful since they do not contribute to the route discovery process. Reducing the resource overhead may allow for several algorithms to be deployed in a wide range of networks (wireless and ad-hoc) which require a simple routing protocol due to limited availability of resources (memory and bandwidth). Motivated by the need to reduce the resource overhead associated with routing algorithms a new implementation of distance vector routing algorithm using an agent-based paradigm known as Agent-based Distance Vector Routing (ADVR) has been proposed. In ADVR, the ability of route discovery and message passing shifts from the nodes to individual agents that traverse the network, co-ordinate with each other and successively update the routing tables of the nodes they visit.
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Financial Transfer and Its Impact on the Level of Democracy: A Pooled Cross-Sectional Time Series Model.

Financial Transfer and Its Impact on the Level of Democracy: A Pooled Cross-Sectional Time Series Model.

Date: May 2003
Creator: Al-Momani, Mohammad H.
Description: This dissertation is a pooled time series, cross-sectional, quantitative study of the impact of international financial transfer on the level of democracy. The study covers 174 developed and developing countries from 1976 through 1994. Through evaluating the democracy and democratization literature and other studies, the dissertation develops a theory and testable hypotheses about the impact of the international variables foreign aid and foreign direct investment on levels of democracy. This study sought to determine whether these two financial variables promote or nurture democracy and if so, how? A pooled time-series cross-sectional model is developed employing these two variables along with other relevant control variables. Control variables included the presence of the Cold War and existence of formal alliance with the United States, which account for the strategic dimension that might affect the financial transfer - level of democracy linkage. The model also includes an economic development variable (per capita Gross National Product) to account for the powerful impact for economic development on the level of democracy, as well as a control for each country's population size. By addressing and the inclusion of financial, economic, strategic, and population size effects, I consider whether change in these variables affect the level of ...
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The Appropriate Use of Human Intelligence in Combating Terrorism

The Appropriate Use of Human Intelligence in Combating Terrorism

Date: August 2003
Creator: Koseli, Mutlu
Description: When we looked at different issues in terrorism such as definitions, descriptions and motivations, groups and supporters, tactics, strategies, and victims of terrorists and terrorist activities, we see that terrorism is an issue that can occur at any time, and in any place, and it seems that the terrorism threat will still exist in the future. It is almost impossible to stop all terrorist activities all over the world, but it is possible to formulate an anti-terrorism policy that can keep terrorist activities at a minimum level and prevent planned terror activities by a well developed intelligence network. It seems that to establish a good intelligence collection system an approach in which HUMINT and TECHINT are interdependent with each other is necessary. By using a combination of human and technical intelligence collection methods, intelligence agencies can become more effective and efficient against terrorism.
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Explorations with optically active, cage-annulated crown ethers.

Explorations with optically active, cage-annulated crown ethers.

Date: May 2003
Creator: Ji, Mingzhe
Description: A variety of optically active macrocyclic crown ethers that serve as "host" systems that are capable of differentiating between enantiomeric "guest" molecules during host-guest complexation have been prepared via incorporation of chiral elements into the crown ring skeleton. The ability of these crown ethers to recognize the enantiomers of guest salts, i.e., (+) a-methyl benzylamine and to transport them enantioselectively in W-tube transport experiments were studied. The ability of these crown ethers to perform as chiral catalysts in an enantioselective Michael addition was studied. The extent of asymmetric induction, expressed in terms of the enantiomeric excess (%ee), was monitored by measuring the optical rotation of the product and comparing to the literature value.
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Our enemy, ourselves: Political conspiracy in American cinema, 1970-present.

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

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Date: August 2003
Creator: Budziszewski, Przemyslaw
Description: 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.
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The Russian trumpet sonata: a study of selected representative sonatas for trumpet and piano with an historical overview of the Russian trumpet school

The Russian trumpet sonata: a study of selected representative sonatas for trumpet and piano with an historical overview of the Russian trumpet school

Date: May 2003
Creator: Akhmadullin, Iskander
Description: The impact of training on virtual team effectiveness was assessed in five areas: communication, planning tasks and setting goals, solving problems and making decisions, resolving conflict, and responding to customer requirements. A 12-page survey was developed exploring all aspects of virtual teams. 180 surveys were distributed, 52 were returned representing 43 companies. Training led to higher effectiveness in planning tasks and setting goals, solving problems and making decisions, and conflict resolution, but not in communication and responding to customer requirements. Training may not solve all the problems that virtual teams will encounter; however, training will make the challenges easier to handle.
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Emotional Intelligence at Mid Life: A Cross Sectional Investigation of Structural Variance, Social Correlates, and Relationship to Established Personality and Ability Taxonomies

Emotional Intelligence at Mid Life: A Cross Sectional Investigation of Structural Variance, Social Correlates, and Relationship to Established Personality and Ability Taxonomies

Date: August 2005
Creator: Chapman, Benjamin P.
Description: Emotional Intelligence (EI) has been relatively unstudied after young adulthood. Yet there are a variety of reasons to expect that EI may be different at mid life than in young adulthood. Normative life experiences may lead to increases in EI, and as the array of different environments and experiences increases with age, one might expect greater individual differences in EI. Similarly, if EI is located somewhere at the intersection of personality and intelligence, as some have speculated, it may follow a course of structural differentiation similar to cognitive abilities. EI may be more closely linked to social variables such as loneliness and friendships at mid life, and its relation to established personality and ability factors such as the Big Five (Neuroticism, Extraversion, Openness, Agreeableness, and Conscientiousness) and fluid and crystallized abilities may also vary with age. These hypotheses were investigated in samples of 292 young adults and 246 mid life adults, using the Schutte Self Report Emotional Intelligence Inventory, the NEO-Five Factor Personality Inventory, markers of crystallized and fluid ability from Horn's Crystallized/Fluid Sampler, and a variety of other measures. Mid life adults scored higher on overall EI scores, but evidenced no greater range of individual differences than did young ...
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Public safety curricula in American community colleges: Programs, problems, and prospects.

Public safety curricula in American community colleges: Programs, problems, and prospects.

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Date: August 2005
Creator: Phillips, Ted P.
Description: This study explored public safety programs in publicly controlled American community colleges. The need for accurate and complete information in an era of homeland security and defense is paramount as government, education, the private sector, and the citizenry interact to ensure a safer nation. The general purposes of this study were to compile current descriptive information on public safety programs and curricula in America's publicly controlled community colleges, and to identify problems and prospects inherent in the administration of these programs. Information is critical as community colleges continue to struggle with decreased funding and seek alternative sources of revenue. Community colleges represent a tremendous network for course delivery, such as homeland security training, but struggle to obtain the attention or the funding from the federal government. A review of pertinent literature provided the foundation of a 100-item survey questionnaire that was mailed to a random sample of 200 public safety administrators at American community colleges. The study also included a review of archival data to further describe the programs. Of the 200 instruments sent, 97 (48.5%) were completed, returned, and useable. From the literature, the survey results, and the archival data, a comprehensive list of community colleges with public safety ...
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Conspicuous Consumption and American Political Behavior

Conspicuous Consumption and American Political Behavior

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Date: August 2005
Creator: Bouressa, Andrea Kelly
Description: The following premise is based on the ideas of social theorists who have contributed to understanding the importance of image in society. This proposal argues that political participation is susceptible to exploitation in the form of conspicuous consumption as defined by Thorstein Veblen. The analyses that follow will test the degree to which Americans who demonstrate more traditional forms of conspicuous consumption also tend to show more activity in political venues. While the correlation of these two variables is not sufficient to demonstrate cause and effect, it may be significant enough to attract more researchers to this question: are Americans using political involvement to positively influence the way that their social status is perceived by others?
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Mouse cortical cholinergic neurons: Ontogeny of phenotypes in vivo and in vitro.

Mouse cortical cholinergic neurons: Ontogeny of phenotypes in vivo and in vitro.

Date: August 2005
Creator: Coiculescu, Olivia Elena
Description: The development of cholinergic neurons in mouse frontal cortex was studied both in vivo and in vitro by immunocytochemistry with an antibody to choline acetyltransferase (ChAT), the enzyme responsible for acetylcholine synthesis. While cortical cholinergic neurons have previously been characterized in rat cortex, up until very recently, intrinsic cortical cholinergic neurons were considered to be absent in mouse, and little is known about their development or phenotypic characteristics. The present study found no ChAT-positive neurons in mouse frontal cortex on postnatal day 0 (P0, the day of birth). On P7 there were few, faintly stained, ChAT-positive neurons. The numerical density of ChAT-positive neurons increased substantially with age, from none on P0, to 9.2 + 1.4 on P7, to 14.8 + 0.9 on P16, and 41.6 + 3.9 in adulthood. Considering that the numerical density of total neurons decreases during this postnatal period, the data represent a marked developmental increase in the percentage of cholinergic neurons. The development of cholinergic neurons showed very similar timelines in rat and mouse frontal cortex. Cultures prepared from mouse frontal cortex on embryonic day 16 were maintained for 25, 76, or 100 days in vitro (div). The percentage of ChAT-positive neurons was considerably higher than ...
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Examination of Web-based teaching strategies at the University of North Texas.

Examination of Web-based teaching strategies at the University of North Texas.

Date: August 2005
Creator: Ray, Julie B.
Description: This study examined the degree to which University of North Texas (UNT) instructors involved in Web-based instruction are implementing teaching strategies as identified in Chickering and Gamson's (1987) model, seven principles for good practice in undergraduate education. In addition, the study examined training received by instructors in developing and delivering a Web-based course and the relationships between their training and reported use of the teaching strategies in the seven principles. The study also examined the relationship between the number of Web-based courses taught and the use of the teaching strategies. Seventy-two surveys were distributed, with a return rate of 90.3%. Results of the first three research questions were as follows: (a) Self-taught (49%) and UNT Center for Distributed Learning (CDL) (31%) were the most frequently used types of training in preparation for teaching a Web-based course, whereas peer taught (17%) and conferences/workshops (3%) were the least used; (b) the average number of Web-based courses taught by the instructors was M = 8.26; and (c) the most frequently used principles were "Gives prompt feedback" and "Communicates high expectations." UNT CDL assists faculty with the development and delivery of online courses, offering a series of training courses to better prepare faculty to ...
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A geospatial tool for assessing potential wildland fire risk in central Texas.

A geospatial tool for assessing potential wildland fire risk in central Texas.

Date: August 2005
Creator: Hunter, Bruce Allan
Description: Wildland fires in the United States are not always confined to wilderness areas. The growth of population centers and housing developments in wilderness areas has blurred the boundaries between rural and urban. This merger of human development and natural landscape is known in the wildland fire community as the wildland urban interface or WUI, and it is within this interface that many wildland fires increasingly occur. As wildland fire intrusions in the WUI increase so too does the need for tools to assess potential impact to valuable assets contained within the interface. This study presents a methodology that combines real-time weather data, a wildland fire behavior model, satellite remote sensing and geospatial data in a geographic information system to assess potential risk to human developments and natural resources within the Austin metropolitan area and surrounding ten counties of central, Texas. The methodology uses readily available digital databases and satellite images within Texas, in combination with an industry standard fire behavior model to assist emergency and natural resource managers assess potential impacts from wildland fire. Results of the study will promote prevention of WUI fire disasters, facilitate watershed and habitat protection, and help direct efforts in post wildland fire mitigation and ...
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Perceived Change in Behavior Associated with Peer Feedback in Work Teams

Perceived Change in Behavior Associated with Peer Feedback in Work Teams

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Date: August 2005
Creator: DeJarnett, Nicole
Description: This study investigated if the use of a team feedback system resulted in peers perceiving a change in behavior. Personality variables such as conscientiousness, agreeableness, and extraversion were examined as possible moderators. Self-ratings and peer ratings were collected from 164 individuals through the use of the Center for Collaborative Organizations' Team Feedback System. Using polynomial regression, it was determined that time 1 peer ratings predicted behavior change and the combination of conscientiousness variables moderated peer perceived behavior change.
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Education for Education's Sake? Exposing the Arts District of Downtown Dallas

Education for Education's Sake? Exposing the Arts District of Downtown Dallas

Date: August 2005
Creator: Gormly, Robin K.
Description: This thesis discusses the relatively new approach of art education, by paralleling it to Marxist ideology on art. The Dallas Arts District is one example of a city where museum art education is in conflict: being adopted more vigorously by some and with less acceptance by others. In order to provide a glimpse into the museum ideology of downtown Dallas, previous schools of thought regarding the role of curators and the introduction of educators into museums will be detailed, as well as conflicts between these two factions. The following questions will be addressed: Is museum art education truly a movement which strives to infuse the American culture with a greater appreciation of art? Is there a link to overcoming Marx's key issue of class? How is the movement affecting the Dallas Arts District and to what extent is museum art education being utilized within this forum? Is the emphasis toward museum art education greater in Dallas than in other large cities across the United States, and if so, how has that affected the cities' patrons?
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"My Vagina" and other stories.

"My Vagina" and other stories.

Date: August 2005
Creator: Anderson, Aaron W.
Description: This thesis includes seven short stories and a critical afterword. The afterword places the stories in their literary historical context in regards to creative nonfiction. It goes on to discuss the craft of fictionalizing autobiographical stories. Each of the stories should stand alone, though they follow the narrator's life for a number of years. Harlin Anderson is the narrator of all the stories.
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XML-Based Agent Scripts and Inference Mechanisms

XML-Based Agent Scripts and Inference Mechanisms

Date: August 2003
Creator: Sun, Guili
Description: Natural language understanding has been a persistent challenge to researchers in various computer science fields, in a number of applications ranging from user support systems to entertainment and online teaching. A long term goal of the Artificial Intelligence field is to implement mechanisms that enable computers to emulate human dialogue. The recently developed ALICEbots, virtual agents with underlying AIML scripts, by A.L.I.C.E. foundation, use AIML scripts - a subset of XML - as the underlying pattern database for question answering. Their goal is to enable pattern-based, stimulus-response knowledge content to be served, received and processed over the Web, or offline, in the manner similar to HTML and XML. In this thesis, we describe a system that converts the AIML scripts to Prolog clauses and reuses them as part of a knowledge processor. The inference mechanism developed in this thesis is able to successfully match the input pattern with our clauses database even if words are missing. We also emulate the pattern deduction algorithm of the original logic deduction mechanism. Our rules, compatible with Semantic Web standards, bring structure to the meaningful content of Web pages and support interactive content retrieval using natural language.
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Building an Intelligent Filtering System Using Idea Indexing

Building an Intelligent Filtering System Using Idea Indexing

Date: August 2003
Creator: Yang, Li
Description: 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.
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The Effects of Biofeedback and Verbal Feedback on the Training and Maintenance of Diaphragmatic Breathing

The Effects of Biofeedback and Verbal Feedback on the Training and Maintenance of Diaphragmatic Breathing

Date: May 2003
Creator: Armstrong, Earl E.
Description: The purpose of this study was to evaluate the effects of a computer program on the training and maintenance of diaphragmatic breathing. The biofeedback portion was visual computer training and the results were displayed concurrently with participants' breathing responses to monitor display. The verbal feedback portion was praise that was given and recorded when participants responded with predominantly diaphragmatic breathing at the scheduled moment and response instruction that was given when participants responded with predominantly thoracic breathing. The results of this study indicate the computer program's effectiveness needs to be increased by supplementation with verbal feedback.
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