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 Collection: UNT Theses and Dissertations
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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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Agent extensions for peer-to-peer networks.

Agent extensions for peer-to-peer networks.

Date: December 2003
Creator: Valiveti, Kalyan
Description: Peer-to-Peer (P2P) networks have seen tremendous growth in development and usage in recent times. This attention has brought many developments as well as new challenges to these networks. We will show that agent extensions to P2P networks offer solutions to many problems faced by P2P networks. In this research, an attempt is made to bring together JXTA P2P infrastructure and Jinni, a Prolog based agent engine to form an agent based P2P network. On top of the JXTA, we define simple Java API providing P2P services for agent programming constructs. Jinni is deployed on this JXTA network using an automated code update mechanism. Experiments are conducted on this Jinni/JXTA platform to implement a simple agent communication and data exchange protocol.
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Analysis of a Cotton Gene Cluster for the Antifungal Protein Osmotin

Analysis of a Cotton Gene Cluster for the Antifungal Protein Osmotin

Date: December 2003
Creator: Wilkinson, Jeffery Roland
Description: Three overlapping genomic clones covering 29.0 kilobases of cotton DNA were found to encompass a cluster of two presumptive osmotin genes (OSMI and OSMII) and two osmotin pseudogenes (OSMIII and OSMIV). A segment of 16,007 basepairs of genomic DNA was sequenced from the overlapping genomic clones (GenBank Accessions AY303690 and AF304007). The two cotton osmotin genes were found to have open reading frames of 729 basepairs without any introns, and would encode presumptive osmotin preproteins of 242 amino acids. The open reading frames of the genes are identical in sequence to two corresponding cDNA clones (GenBank Accessions AF192271 and AY301283). The two cDNA inserts are almost full-length, since one lacks codons for the four N-terminal amino acids, and the other cDNA insert lacks the coding region for the 34 N-terminal amino acids. The cotton osmotin preproteins can be identified as PR5 proteins from their similarities to the deduced amino acid sequences of other plant osmotin PR5 preproteins. The preproteins would have N-terminal signal sequences of 24 amino acids, and the mature 24 kilodalton isoforms would likely be targeted for extracellular secretion. Prospective promoter elements, including two ethylene response elements, implicated as being positive regulatory elements in the expression of a ...
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An analysis of motivational cues in virtual environments.

An analysis of motivational cues in virtual environments.

Access: Use of this item is restricted to the UNT Community.
Date: December 2003
Creator: Voruganti, Lavanya
Description: Guiding navigation in virtual environments (VEs) is a challenging task. A key issue in the navigation of a virtual environment is to be able to strike a balance between the user's need to explore the environment freely and the designer's need to ensure that the user experiences all the important events in the VE. This thesis reports on a study aimed at comparing the effectiveness of various navigation cues that are used to motivate users towards a specific target location. The results of this study indicate some significant differences in how users responded to the various cues.
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Analysis of special education compliance and special education funding in four Texas open-enrollment charter schools.

Analysis of special education compliance and special education funding in four Texas open-enrollment charter schools.

Date: December 2003
Creator: Rudebusch, Judith
Description: The purpose of this study was to conduct an in-depth examination of special education services in open-enrollment charter schools in north Texas and to examine relationships between special education compliance and funding. Six questions guided the research: How have the charter schools designed special education services, and do these services meet individual needs of students with disabilities? Have federal education and disability laws affected charter schools' admissions, operations, or student performance ratings? What were the levels of special education funding and compliance with federal and state regulations? Is there a relationship between special education funding and special education compliance with rules and regulations? Studies at the national and state levels have frequently been conducted in the form of surveys, and provide only preliminary information about the status of special education in charter schools. There is a paucity of case specific information about the management and delivery of special education services in open-enrollment charter schools. A within-case study research design was used for this investigation utilizing qualitative methods of structured open-ended interviews, observations at the schools, and document analysis. Administrators at four open-enrollment charter schools were interviewed to gather data for this multi-case study. The data supported the hypotheses related to ...
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An analysis of the effects of high school student concurrent enrollment at Collin County Community College District.

An analysis of the effects of high school student concurrent enrollment at Collin County Community College District.

Access: Use of this item is restricted to the UNT Community.
Date: December 2003
Creator: Swanson, Kathrine Bridgett
Description: As efforts to provide seamless transitions from high school to college grow, so do the numbers of high school students who concurrently enroll in college courses across the country. The purpose of this study was to evaluate the effectiveness of various aspects of the concurrent enrollment program at Collin County Community College District in Texas. Six research questions were designed to address student success and continuing enrollment patterns after high school graduation, as well as evaluate differences in the various models of dual credit classes offered by the college. Literature related to concurrent enrollment and dual credit programs, senior year of high school, and part-time faculty effectiveness was reviewed. Student issues addressed include: grade performance of concurrent enrollment students compared to the general college population; the percentage of concurrent enrollment students who continue at the college after high school graduation; and a comparison of continuing concurrent enrollment students with a matched sample (based on high school class rank), on the student success factors of fall-to-spring retention rates, fall-to-fall retention rates, grade point averages, and completion rates. Findings were generally positive related to the impact of concurrent enrollment on students and their subsequent success at the college. Various models of offering ...
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An Annotated Bibliography of Selected Chamber Music For Saxophone, Winds and Percussion with Analyses Of  Danses Exotiques by Jean Françaix, and  Nonet by Fisher Tull

An Annotated Bibliography of Selected Chamber Music For Saxophone, Winds and Percussion with Analyses Of Danses Exotiques by Jean Françaix, and Nonet by Fisher Tull

Date: December 2003
Creator: Fryer, Cheryl A.
Description: An expansive repertoire of original chamber works is available for ensembles comprised of saxophone, wind and percussion instruments. Many musicians, including saxophonists and conductors, are unaware of this enormous body of literature. This produces a compelling need for sources of identification available to conductors, performers and teachers. This study begins to provide such a source through the presentation of selected works and the accompanying annotated bibliography. The lack of awareness of available scores for chamber music with saxophone, winds and percussion among conductors and many performers often contributes to the absence of these works in concert halls. The objective of this lecture-recital document is to make available a tool that includes only original works for the saxophone in a variety of chamber ensemble settings. The nature of this study will be descriptive. The literature chosen for this project reveals varying levels of performance difficulty, compositional techniques, form, and instrumentation. Chosen works employ an ensemble size that requires a conductor or are more successfully performed with a conductor. Selected compositions are illustrated in which the saxophone is identified as a vital ingredient in an already existing repertoire of serious chamber literature. Works in this study include original compositions using from seven ...
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The aquatic insect communities of Holbrook Creek and Cochetopa Creek in Colorado.

The aquatic insect communities of Holbrook Creek and Cochetopa Creek in Colorado.

Date: December 2003
Creator: Wallace, Mark Allen
Description: The first objective for this problem in lieu of thesis project was to gather, identify to the lowest practical taxonomic level and organize all available aquatic insects collected from high altitude Colorado aquatic systems during the summers of 1994, 1996, 1998, and 2002 for the University of North Texas Environmental Science Field Course (BIOL 5650). The curated collection will be housed in the Elm Fork Natural History Museum, located at the University of North Texas. The second objective was to provide a summary and discussion of the occurrence and distribution of the aquatic insects collected from Mt. Blanca in 1994, 1996, and 1998 and to create a taxa list of aquatic insects collected from Cochetopa Creek during the summer of 2002.
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Assessment of Resident and Staff Activity in a State Residential Setting

Assessment of Resident and Staff Activity in a State Residential Setting

Date: December 2003
Creator: Galletta, Katharine Lena
Description: Previous studies have demonstrated the use of momentary time-sampling methods for the objective measurement of naturally occurring events (Zarcone, Iwata, Rodgers & Vollmer, 1993; Shore, Lerman, Smith, Iwata & DeLeon, 1995). These studies have provided information about observed levels and characteristics of direct care services, supervision, resident activity and facility conditions. The present study evaluated the utility of these assessment procedures in a residential facility for developmentally delayed adults. The procedure was further evaluated for sensitivity to changes relative to an intervention designed to increase staff and client interaction. A multiple baseline design was used to assess a data collection procedure in the context of intervention in four residences on a state facility campus. Intervention included the use of scheduling, modeling and performance feedback. Results indicate an overall increase of staff and client interaction and demonstrate the utility of the assessment procedure for the evaluation of multiple, on-going activities as well as intervention effects.
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Ballistic deposition: global scaling and local time series.

Ballistic deposition: global scaling and local time series.

Date: December 2003
Creator: Schwettmann, Arne
Description: Complexity can emerge from extremely simple rules. A paradigmatic example of this is the model of ballistic deposition (BD), a simple model of sedimentary rock growth. In two separate Problem-in-Lieu-of Thesis studies, BD was investigated numerically in (1+1)-D on a lattice. Both studies are combined in this document. For problem I, the global interface roughening (IR) process was studied in terms of effective scaling exponents for a generalized BD model. The model used incorporates a tunable parameter B to change the cooperation between aggregating particles. Scaling was found to depart increasingly from the predictions of Kardar-Parisi-Zhang theory both with decreasing system sizes and with increasing cooperation. For problem II, the local single column evolution during BD rock growth was studied via statistical analysis of time series. Connections were found between single column time series properties and the global IR process.
Contributing Partner: UNT Libraries