UNT Libraries - 443 Matching Results

Search Results

An 8-Step Program: Shaping and Fixed-Time Food Delivery Effects on Several Approximations and Undesired Responses in Goats.

Description: This study investigated the effects of a shaping program for halter training across 8 steps in the program and 4 trial-terminating, or "undesirable," responses. Three La Mancha goats (Capra hircus) located at the Frank Buck Zoo in Gainesville, Texas were used for the study. A fixed-time 15 s (FT-15 s) was used during the baseline conditions, to examine the effects of response contingent and response-independent food deliveries, as well as to examine what preliminary steps might not necessarily have to be shaped. All 3 goats successfully learned to allow the halter to be placed on them and to lead on the halter, although 2 of the 3 goats required an additional task analysis for the fifth step to further break down that approximation. Several of the early steps selected by the researchers were not necessary to complete the program, as determined by the baseline condition.
Date: May 2003
Creator: Fernandez, Eduardo J.

Accessing Information on the World Wide Web: Predicting Usage Based on Involvement

Description: Advice for Web designers often includes an admonition to use short, scannable, bullet-pointed text, reflecting the common belief that browsing the Web most often involves scanning rather than reading. Literature from several disciplines focuses on the myriad combinations of factors related to online reading but studies of the users' interests and motivations appear to offer a more promising avenue for understanding how users utilize information on Web pages. This study utilized the modified Personal Involvement Inventory (PII), a ten-item instrument used primarily in the marketing and advertising fields, to measure interest and motivation toward a topic presented on the Web. Two sites were constructed from Reader's Digest Association, Inc. online articles and a program written to track students' use of the site. Behavior was measured by the initial choice of short versus longer versions of the main page, the number of pages visited and the amount of time spent on the site. Data were gathered from students at a small, private university in the southwest part of the United States to answer six hypotheses which posited that subjects with higher involvement in a topic presented on the Web and a more positive attitude toward the Web would tend to select the longer text version, visit more pages, and spend more time on the site. While attitude toward the Web did not correlate significantly with any of the behavioral factors, the level of involvement was associated with the use of the sites in two of three hypotheses, but only partially in the manner hypothesized. Increased involvement with a Web topic did correlate with the choice of a longer, more detailed initial Web page, but was inversely related to the number of pages viewed so that the higher the involvement, the fewer pages visited. An additional indicator of usage, the average amount ...
Date: May 2003
Creator: Langford, James David

Acculturative Processes and Their Impact on Self-Reports of Psychological Distress in Mexican-American Adolescents

Description: The current study examined the effects of acculturative processes on the self-report of behavioral problems in Hispanic children ages 11-14. Acculturation was measured by the Acculturation Rating Scale for Mexican Americans-II (ARSMA-II) (ã Sage Publications, Thousand Oaks, CA, www.sagepub.com) (Cuellar, Arnold, and Maldonado, 1995) and the self-report of behavioral symptoms was assessed using the Youth Self-Report (ã T.M. Achenbach, Burlington, VT, www.aseba.com) (Achenbach, 1991). It was hypothesized that while both the linear and orthogonal categories of acculturation would account for a significant proportion of the variance in behavior problems in this age group, the orthogonal model would account for a larger proportion of variance due to its multidimensional nature. As well, it was hypothesized that the experimental Marginalization scales of the ARSMA-II would be predictive of behavioral problems. Multivariate analysis of variance was used to test these hypotheses and results were non-significant for the linear, orthogonal, and marginalization categories. The effects of the ethnic/cultural homogeneity of the region from which the sample was drawn, the buffering of social support, and the developmental aspects of ethnic identity are discussed as factors which may have influenced the potential impact of acculturative stress on psychological and behavioral functioning.
Date: May 2003
Creator: Garrison, Lance A.

Agency Collaboration for UNCCD Implementation: Current Situation and Lessons Learned

Description: This joint publication of the Facilitation Committee of the Global Mechanism for the UNCCD CoP-6, (25 Aug - 5 Sept 2003, Havana, Cuba), presents short briefs by Committee members highlighting their commitment to CCD process and its implementation. It provides some lessons learnt from collaboration between members through a matrix of successful collaborative efforts to date.
Date: August 2003
Creator: Havana, Cuba

Agent-Based Architecture for Web Deployment of Multi-Agents as Conversational Interfaces.

Description: Agent-based architecture explains the rationale and basis for developing agents that can interact with users through natural language query/answer patterns developed systematically using AIML (artificial intelligence mark-up language) scripts. This thesis research document also explains the architecture for VISTA (virtual interactive story-telling agents), which is used for interactive querying in educational and recreational purposes. Agents are very effective as conversational interfaces when used along side with graphical user interface (GUI) in applications and Web pages. This architecture platform can support multiple agents with or with out sharing of knowledgebase. They are very useful as chat robots for recreational purposes, customer service and educational purposes. This platform is powered by Java servlet implementation of Program D and contained in Apache Tomcat server. The AIML scripting language defined here in is a generic form of XML language and forms the knowledgebase of the bot. Animation is provided with Microsoft® Agent technology and text-to-speech support engine.
Date: May 2003
Creator: Pothuru, Ranjit Kumar

Agent Extensions for Peer-to-Peer Networks.

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.
Date: December 2003
Creator: Valiveti, Kalyan

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

Description: 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.

Analysis of a Cotton Gene Cluster for the Antifungal Protein Osmotin

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 number of PR-proteins, occur in the 5'-flanking regions. The mature osmotin proteins accumulate in cotton plants treated with the inducers ethephon and hydrogen peroxide. Thus, the two cotton osmotin genes encode osmotin proteins. The coding regions of the two genes have been expressed and isolated as fusion polypeptides in a bacterial expression system. Binary constructs containing the open reading frames of the two osmotin genes under the control of the 35S CaMV promoter have been generated for eventual production of transgenic Arabidopsis and cotton plants for potential constitutive expression of the osmotin proteins for increased resistance against fungal pathogens.
Date: December 2003
Creator: Wilkinson, Jeffery Roland

Analysis of Japanese Exports and Imports of Rice

Description: This research shows that the Japanese rice policy has affected the volume of exported and imported rice; moreover, multilateral and bilateral agreements have also affected Japanese rice policy. Japan's institution of subsidies and trade barriers has made its rice products too expensive for foreign trade and its domestic consumers. Since the WTO agreement has forced Japan to open its market gradually over six years, Japan may be unable to compete internationally because of its limited land, high labor costs, and the field utility fees.
Date: May 2003
Creator: Shiraiwa, Toshio

An Analysis of Joe Lovano's Tenor Saxophone Improvisation on "Misterioso" by Thelonius Monk: An Exercise in Multi-Dimensional Thematicism

Description: The dissertation focuses on Joe Lovano's utilization of thematic material in relation to "Misterioso" by Thelonius Monk. Thematicism is defined more broadly in this study to include reference to the form, phrase structure, and harmony of "Misterioso". Methodological models provided by Gary Potter, Henry Martin, and Paul Hindemith serve as points of departure for this study which focuses on four areas: 1) phrasing, 2) step progression, 3) motives and formulas, and 4) harmonic implications. Thematic relationships are discovered through the analysis of the transcription of Lovano's improvisation; the four levels of the analysis work together and also independent of one another to produce a kind of thematic counterpoint. This study also examines how Lovano creates an effective solo. The study will be of benefit to students, professional musicians, pedagogues, theorists, musicologists, and jazz aficionados.
Date: August 2003
Creator: Dahlke, Andrew Richard

An Analysis of Motivational Cues in Virtual Environments.

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.
Access: This item is restricted to UNT Community Members. Login required if off-campus.
Date: December 2003
Creator: Voruganti, Lavanya

An Analysis of Selected Choral Works by Kirke Mechem: Music-Textual Relationships in Settings of Poetry of Sara Teasdale

Description: Kirke Mechem (b. 1925), American composer, has a musical output which includes a variety of genres, the most prolific being choral music. This document examines selected choral works by Mechem that are set to the poetry of Sara Teasdale (b. 1884, d. 1933). Included are biographical sketches of Mechem and Teasdale. Selected choral works examined include Christmas Carol (1969) SATB and guitar, The Winds of May, five movement choral cycle (1965) SATB, Birds at Dusk, from the choral cycle Winging Wildly (1998) SATB, and Barter (1995) SA, trumpet, piano 4-hands. Analysis of the poetry involved as well as musical attributes and compositional techniques, including meter, form, harmonic structures, wordpainting, rhythmic treatment and melodic characteristics are included in the discussion.
Date: August 2003
Creator: Bierschenk, Jerome Michael

Analysis of Special Education Compliance and Special Education Funding in Four Texas Open-Enrollment Charter Schools.

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 special education services in open-enrollment charter schools. The schools in this study provided special education services with an inclusion model for the first two years. In their first years of operation, charter schools face challenges of small budgets, few if any special education students, and difficulty finding special education teachers and other staff. In the third year and beyond, the schools were able to add special education services and staff and were more stable in terms of budget and operations. For the time period analyzed, special education costs exceeded special education funding. Compliance with special education regulations was relatively high ...
Date: December 2003
Creator: Rudebusch, Judith

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

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 concurrent enrollment courses were also evaluated as measured by student performance in subsequent courses. Analysis of variance was used to determine differences based on the location at which the courses were taught (high school, college campus, or a college center); differences based on the mix of students in the class (all from one high school; all high school representing several schools; or a mix of high school and college students); and differences based on the employment status of the instructor (full-time college instructor; part-time college instructor; or high school teacher). Differences were examined for the entire sample, and for the ...
Access: This item is restricted to UNT Community Members. Login required if off-campus.
Date: December 2003
Creator: Swanson, Kathrine Bridgett

Annexation of Texas Project

Description: Presentation for the 2003 GODART Preconference at the American Library Association Annual Conference. This presentation outlines the "From Republic to State: Debates and Documents Relating to the Annexation of Texas, 1836-1856" project. This grant funded project involved digitizing 6000 objects.
Date: June 21, 2003
Creator: Phillips, Mark Edward

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

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 to seventeen musicians. Some of the works discussed in this study include double bass and piano. Chapters include information on the Parameters of Study (Introduction, Historical Perspective, Sources, Criteria, Selection of Works for Analysis), composer Jean Françaix, a Historical Overview and Detailed Study of Danses Exotiques, composer Fisher Tull, a Historical Overview and Detailed Study of Nonet and an Annotated Bibliography of compositions matching the established criteria. Appendices include List of Works of Fisher Tull and Jean Françaix.
Date: December 2003
Creator: Fryer, Cheryl A.

Antarctic fact-file

Description: Antarctica is a continent for science. All countries working in Antarctica carry out scientific research, in a surprising range of physical and biological sciences, from the vastness of space to the minute scale of micro-organisms. Activities are regulated by the Antarctic Treaty, which has been in force since 1959 and is signed by all countries operating there. The Treaty reserves the continent for peaceful purposes, and all military and industrial activities are banned.
Date: 2003
Creator: British Antactic Survey

Applications of Remote Sensing and GIS to Modeling Fire for Vegetative Restoration in Northern Arizona

Description: An accurate fire model is a useful tool in predicting the behavior of a prescribed fire. Simulation of fire requires an extensive amount of data and can be accomplished best using GIS applications. This paper demonstrates integrative procedures of using of ArcGIS™, ERDAS Imagine™, GPS, and FARSITE© to predict prescribed fire behavior on the Kaibab-Paiute Reservation. ArcGIS was used to create a database incorporating all variables into a common spatial reference system and format for the FARSITE model. ArcGIS Spatial Analyst was then used to select optimal burn sites for simulation. Our predictions will be implemented in future interagency efforts towards vegetative restoration on the reservation.
Date: August 2003
Creator: Hardison, Tanya

An Approach to the Critical Evaluation of Settings of the Poetry of Walt Whitman: Lowell Liebermann's Symphony No. 2

Description: Walt Whitman's poetry continues to inspire composers of choral music, and the growing collection of musical settings necessitates development of a standard evaluative tool. Critical evaluation of the musical settings of Whitman's work is difficult because the extensive body of verse is complex and of uneven quality, and lack of common text among compositions makes comparison problematical. The diversity of musical styles involved further complicates the issue. Previous studies have focused on either ideology or style, but none have united the two critical approaches, thus restricting potential for deeper understanding of the music. This study proposes an approach to critical evaluation of Whitman settings that applies hermeneutics, or a blend of analysis and criticism, to the process. The hermeneutic approach includes an examination of the interrelationship between musical form and style and the composer's ideology, which is revealed through his/her treatment of Whitman's poetry and analyzed in light of cultural influences. Lowell Liebermann (b. 1961) has composed a large scale choral/orchestral setting of Whitman texts in his Symphony No. 2, opus 67 (1999). The selection, placement, and treatment of poetry in Symphony No. 2 provide a window into the composer's mind and his place in the current musical climate. Liebermann's setting reveals his interest in Whitman's search for spirituality and the human spirit's transcendence over time and space. His understanding of Whitman is filtered through a postmodern cynicism, which he seeks to remedy with his nostalgic neo-Romantic style. Chapter One provides an introduction to Whitman's life and examination of his poetry's themes, style, and reception. Chapter Two outlines issues relevant to criticism of Whitman settings and proposes an approach to critical analysis. Chapter Three applies the critical method to Liebermann's Second Symphony, drawing conclusions about its place in contemporary culture.
Date: May 2003
Creator: Kenaston, Karen S.

The Appropriate Use of Human Intelligence in Combating Terrorism

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.
Date: August 2003
Creator: Koseli, Mutlu

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

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.
Date: December 2003
Creator: Wallace, Mark Allen

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

Description: 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