Baeyer-Villiger Oxidation of 1,7- & 1,9-dibromopentacyclo[5.4.0.02,6.03,10.05,9]undecane-8,11-dione

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Baeyer-Villiger oxidation of 1,9-dibromopentacyclo[5.4.0.02,6.03,10.05,9]undecane-8,11-dione (1,9-dibromo-PCU-8,11-dione) was performed by using an excess amount of m-chloroperbenzoic acid (3 equivalents) and resulted in the formation of the corresponding monolactone. The reaction would not proceed to the dilactone stage. The structure of the reaction product was established unequivocally via single crystal X-ray diffraction. Baeyer-Villiger oxidation of 1,9-dibromo-PCU-8,11-dione using ceric ammonium nitrate (CAN) was also performed and afforded a mixture of lactones. Only one of these lactones, which also contained an alkene functionality, could be isolated and characterized. 1,7-dibromo-PCU-8,11-dione was also reacted with CAN, yielding the mono-lactone, which has also been characterized.
Date: May 2004
Creator: Akinola, Adeniyi O.
Object Type: Thesis or Dissertation
System: The UNT Digital Library

Oral History Interview with LeRoy Ellis Cox, February 5, 2004

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Interview with LeRoy Ellis Cox. The interview includes Cox's personal experiences about childhood and early adulthood in Texas, New Mexico, Arizona, and Colorado, World War-II-era Army Air Corps training in armaments and electronics, stateside service in the 303rd Bomb Group of the Eighth Air Force, aviation cadet training, serving as a B-25 instructor pilot, and as a DC-3 tow pilot for the glider program.
Date: February 5, 2004
Creator: Alexander, William J. & Cox, LeRoy E., 1919-
Object Type: Book
System: The UNT Digital Library

Oral History Interview with Douglas R. Crawford, February 25, 2004

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Interview with Air Force veteran Douglas R. "Roy" Crawford. The interview includes Crawford's personal experiences about early family life, joining the U.S. Army Air Forces, training as a bulldozer operator, removing radioactive debris from Hiroshima, training as a radar operator at Edwards Air Force Base, California, and working as the radar tracker when Major Chuck Yeager broke the sound barrier in the Bell X-1 on October 19, 1947. Additionally, Crawford talks about his assignments to Clark Air Force Base, Philippines, and Korea, as a forward air observer, his role as an airborne radar operator during the Bay of Pigs invasion and the Cuban Missile Crisis, his various activities with the NASA Space Program, and clandestine missions with the CIA and Air America over Cambodia during the Vietnam War.
Date: February 25, 2004
Creator: Alexander, William J. & Crawford, Douglas R., 1929-
Object Type: Book
System: The UNT Digital Library

Oral History Interview with Harlan W. Crouse, July 2, 2004

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Interview with Army veteran Harlan W. Crouse, including personal experiences about combat in the Philippines during World War II, the Japanese surrender in Yokohama Harbor, and being present during the post-war U.S. occupation of Japan.
Date: July 2, 2004
Creator: Alexander, William J. & Crouse, Harlan W., 1926-
Object Type: Book
System: The UNT Digital Library

Concerto a VII Clarini con Tymp.

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Johann Ernst Altenburg has been called «the last representative of the heroic guild of trumpeters and timpanists.» Born in Weissenfels on June 15, 1734, he was apprenticed to his father Johann Caspar Altenburg (1689-1761) at the tender age of two and released from his articles as a trumpeter sixteen years later. ...
Date: 2004
Creator: Altenburg, Johann Ernst & Bauguess, Barry
Object Type: Text
System: The UNT Digital Library

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

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The human opportunistic pathogen, Pseudomonas aeruginosa PAO1, has been shown to kill the nematode Caenorhabditis elegans. C. elegans has been a valuable model for the study of bacterial pathogenesis, and has reinforced the notion that common virulence and host defense mechanisms exist. Recently, the pyrimidine pathway was shown to regulate virulence levels. Therefore, mutations in the pyrimidine pathway of PAO1 showed decrease virulence in the nematode. When starving the nematode, bacterial resistance was also shown to increase. It was hypothesized that starvation induced the DAF pathway, which regulates the transcription of genes involved with the antibacterial defense mechanism. Further research will be conducted to test this theory by performing RNAi experiments for the genes functioning in the antibacterial defense mechanism.
Date: August 2004
Creator: Anvari, Sara
Object Type: Thesis or Dissertation
System: The UNT Digital Library

Trends and issues in non-profit business planning.

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Non-profits are increasing in size and scope to meet social needs that are unmet by the government. Declining financial support, government regulations, and increasing competition force non-profits to become more professional and efficient. Non-profits increasingly engage in commercial activities, joint ventures with for-profits, and employ business techniques such as business planning and marketing. An extensive body of research examines issues related to non-profit performance that supplies a framework for business planning. Business planning may help non-profits to sustain competitive advantages and long-term financial stability. This paper examines the challenges of writing a business plan for non-profits concluding with a sample business plan that takes into consideration advantages, risks, and limitations of non-profits.
Date: August 2004
Creator: Barnes, Svetlana V.
Object Type: Thesis or Dissertation
System: The UNT Digital Library

The Effect of Information Literacy Instruction on Library Anxiety Among International Students

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This study explored what effect information literacy instruction (ILI) may have on both a generalized anxiety state and library anxiety specifically. The population studied was international students using resources in a community college. Library anxiety among international students begins with certain barriers that cause anxiety (i.e., language/communication barriers, adjusting to a new education/library system and general cultural adjustments). Library Anxiety is common among college students and is characterized by feelings of negative emotions including, ruminations, tension, fear and mental disorganization (Jiao & Onwuegbuzie, 1999a). This often occurs when a student contemplates conducting research in a library and is due to any number of perceived inabilities about using the library. In order for students to become successful in their information seeking behavior this anxiety needs to be reduced. The study used two groups of international students enrolled in the English for Speakers of other Languages (ESOL) program taking credit courses. Each student completed Bostick's Library Anxiety Scale (LAS) and Spielberger's State-Trait Anxiety Inventory (STAI) to assess anxiety level before and after treatment. Subjects were given a research assignment that required them to use library resources. Treatment: Group 1 (experimental group) attended several library instruction classes (the instruction used Kuhltau's information search …
Date: May 2004
Creator: Battle, Joel C.
Object Type: Thesis or Dissertation
System: The UNT Digital Library

Wayfinding tools in public library buildings: A multiple case study.

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Wayfinding is the process of using one or more tools to move from one location to another in order to accomplish a task or to achieve a goal. This qualitative study explores the process of wayfinding as it applies to locating information in a public library. A group of volunteers were asked to find a selection of items in three types of libraries-traditional, contemporary, and modern. The retrieval process was timed and the reactions of the volunteers were recorded, documented, and analyzed. The impact of various wayfinding tools-architecture, layout, color, signage, computer support, collection organization-on the retrieval process was also identified. The study revealed that many of the wayfinding tools currently available in libraries do not facilitate item retrieval. Inconsistencies, ambiguities, obstructions, disparities, and operational deficiencies all contributed to end-user frustration and retrieval failure. The study suggests that failing to address these issues may prompt library patrons-end users who are increasingly interested in finding information with minimal expenditures of time and effort-may turn to other information-retrieval strategies and abandon a system that they find confusing and frustrating.
Date: May 2004
Creator: Beecher, Ann B.
Object Type: Thesis or Dissertation
System: The UNT Digital Library

Treatment efficacy in a chronic pain population: Pre- to post-treatment.

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The purpose of the current study was to investigate the effects of a multidisciplinary pain management program on five measures of subjective psychosocial factors. Ninety-five participants in the comprehensive multidisciplinary treatment group and the standard medical intervention control group were surveyed about various psychosocial factors using Axis II of the West Haven - Yale Multidimensional Pain Inventory (MPI), pre- to post-treatment. It was hypothesized that post-treatment levels would be significantly lower than pre-treatment levels for all five psychosocial variables. Additionally, gender and ethnicity variables were examined. Based on preliminary analyses indicating pre-treatment differences between the experimental and control group, five 2 x 2 x 3 analyses of covariances (ANCOVAs) were used to examine the above hypotheses. Results indicated significant differences between the treatment conditions on measures of control, with the comprehensive group feeling more in control than the standard group at post-treatment. No other significant main effects for treatment condition were found on the measures of pain severity, interference with daily activities, negative mood, or social support. However, a significant gender main effect was found for social support at post-treatment, with females reporting more social support than males. A significant gender x ethnicity interaction was also found for post-treatment control, …
Date: December 2004
Creator: Bernstein, Dana N.
Object Type: Thesis or Dissertation
System: The UNT Digital Library

Hopfield Networks as an Error Correcting Technique for Speech Recognition

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I experimented with Hopfield networks in the context of a voice-based, query-answering system. Hopfield networks are used to store and retrieve patterns. I used this technique to store queries represented as natural language sentences and I evaluated the accuracy of the technique for error correction in a spoken question-answering dialog between a computer and a user. I show that the use of an auto-associative Hopfield network helps make the speech recognition system more fault tolerant. I also looked at the available encoding schemes to convert a natural language sentence into a pattern of zeroes and ones that can be stored in the Hopfield network reliably, and I suggest scalable data representations which allow storing a large number of queries.
Date: May 2004
Creator: Bireddy, Chakradhar
Object Type: Thesis or Dissertation
System: The UNT Digital Library

Bouzouki Abstraction

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Recording of Colin Black's Bouzouki Abstraction. This work explores the abstract connections between the traditional Greek bouzouki instrument and the constructs of music, heritage, and physical structures displaced in time. This is a bilingual piece that includes text performed in both English and Greek. Musically, this work combines electroacoustic composition, sound art, synthesis, harmonic singing samples, spoken word, and the traditional bouzouki instrument.
Date: 2004
Creator: Black, Colin
Object Type: Sound
System: The UNT Digital Library

City of Denton Municipal Solid Waste Characterization and Management Strategies

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Due to concern about diminishing landfill space, the City of Denton contracted a municipal solid waste characterization study in 1999 that would identify materials for diversion. This paper describes the results of 5 1-week waste sorting events, a scale-house analysis, a recycling participation study, a recycler profile and a similar city study. The results of the characterization studies suggest that at least 50% of each waste stream is recyclable or divertible though paper products accounted for no more than 45% by weight of any waste stream. Curbside recycling participation rate was 71% during the 6-week study period though the average weekly set-out rate was 37%. Recycling participation rates varied significantly by zip code and by home value categories but not by gender. Denton is fairly progressive in its waste management approach when compared to demographically similar cities on a 15-question assessment though recommendations for improvement have been identified.
Date: May 2004
Creator: Brady, Patricia D.
Object Type: Thesis or Dissertation
System: The UNT Digital Library

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

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The purpose of this study was to examine the effect of a breastfeeding education program on breastfeeding initiation rates, breastfeeding knowledge, and attitude towards breastfeeding among teenage mothers at an urban school for pregnant and parenting teens. Breastfeeding initiation rose from 35.7% in the control group to 85.2% in the treatment group. The mean score on the Breastfeeding Knowledge Subscale was significantly higher for the treatment group but not the control group. There was not a significant increase in mean scores on the Breastfeeding Attitude Subscale. Participants who initiated breastfeeding scored also had a significant increase in scores from pretest to posttest on the Breastfeeding Knowledge Subscale, while participants who did not initiate breastfeeding did not.
Date: May 2004
Creator: Brown, Amber L.
Object Type: Thesis or Dissertation
System: The UNT Digital Library

Development of a Novel Grease Resistant Functional Coatings for Paper-based Packaging and Assessment of Application by Flexographic Press

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Recent commercial developments have created a need for alternative materials and methods for imparting oil/grease resistance to paper and/or paperboard used in packaging. The performance of a novel grease resistant functional coating comprised of polyvinyl alcohol (PVA), sodium tetraborate pentahydrate (borate) and acetonedicarboxylic acid (ACDA) and the application of said coating by means of flexographic press is presented herein. Application criteria is developed, testing procedures described, and performance assessment of the developed coating materials are made. SEM images along with contact angle data suggest that coating performance is probably attributable to decreased mean pore size in conjunction with a slightly increased surface contact angle facilitated by crosslinking of PVA molecules by both borate ions and ACDA.
Date: August 2004
Creator: Brown, Robert W.
Object Type: Thesis or Dissertation
System: The UNT Digital Library

Utilization of Corridor Habitat by White-tailed Deer (Odocoileus virginianus) in Denton County, Texas

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White-tailed deer (Odocoileus virginianus) (N=15) movements were determined with use of radio telemetry techniques to determine the utilization of corridor habitat on the Lake Ray Roberts Greenbelt Corridor (RRGC) in north central Texas. Home ranges were calculated using three estimation types. Male white-tailed deer tend to have home ranges twice that of female home ranges. Seasonal home ranges were largest during spring (Feb. - April) and fall (Aug. - Oct.) seasons. Males had greater seasonal variation in utilization than females. No statistically significant difference (p=0.24) between white-tailed deer locations when the RRGC experiences heavy human traffic compared to days when there is light human traffic. Linearity indices indicated home ranges less linear than expected (LI = 3.02). The RRGC should be maintained at its current status to provide a variety of vegetational types and protective cover for white-tailed deer and other wildlife of Denton County.
Date: May 2004
Creator: Bruce, Troy Kenneth
Object Type: Thesis or Dissertation
System: The UNT Digital Library

De novo prediction of the ground state structure of transition metal complexes.

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One of the main goals of computational methods is to identify reasonable geometries for target materials. Organometallic complexes have been investigated in this dissertation research, entailing a significant challenge based on transition metal diversity and the associated complexity of the ligands. A large variety of theoretical methods have been employed to determine ground state geometries of organometallic species. An impressive number of transition metals entailing diverse isomers (e.g., geometric, spin, structural and coordination), different coordination numbers, oxidation states and various numbers of electrons in d orbitals have been studied. Moreover, ligands that are single, double or triple bonded to the transition metal, exhibiting diverse electronic and steric effects, have been investigated. In this research, a novel de novo scheme for structural prediction of transition metal complexes was developed, tested and shown to be successful.
Date: December 2004
Creator: Buda, Corneliu
Object Type: Thesis or Dissertation
System: The UNT Digital Library

Guest Artist Recital: 2004-11-04 - Joren Cain, soprano saxophone, Sammy Marshall, piano, and Jessical Israels, soprano

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Recital performed at UNT College of Music Recital Hall on November 4, 2004 at 6:30 pm.
Date: November 4, 2004
Creator: Cain, Joren; Marshall, Sammy & Israels, Jessica
Object Type: Sound
System: The UNT Digital Library

Oral History Interview with Gerard Roland Vela, July 21, 2004

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Interview with Dr. Gerard Roland Vela, UNT Professor Emeritus of Microbiology. The interview includes Vela's personal experiences about childhood and education, serving in World War II-era U.S. Navy, having a fellowship at Harvard University, and joining the North Texas faculty in 1965. Additionally, Vela discusses his family history, his love of chemistry, genetics, and microbiology, the growing pains involved with transitioning North Texas into a research university, the construction of a research program, his relationship with students, and his service on the Denton City Council. Photographs are included throughout the interview.
Date: July 21, 2004
Creator: Calderon, Roberto R. & Vela, Gerard Roland
Object Type: Book
System: The UNT Digital Library

Intermediate Sanctions in Corrections

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The field of corrections comprises three distinct areas of study: institutional corrections (jails and prisons), community corrections (probation and parole), and intermediate sanctions (community service, boot camps, intensive supervision programs, home confinement and electronic monitoring, halfway houses, day reporting, fines, and restitution). Intermediate Sanctions in Corrections is the first non-edited book devoted completely to intermediate sanctions systems and their individual programs. It begins with an overview of the background and foundation of intermediate sanctions programs and then describes in clear detail each program and its effectiveness. Caputo supports every point with thorough and up-to-date research. Jon’a Meyer, an expert on this field, contributes a chapter on home confinement. Aimed at students, scholars, and policymakers, Intermediate Sanctions in Corrections will be used in the many undergraduate criminal justice courses devoted to corrections and intermediate sanctions.
Date: October 15, 2004
Creator: Caputo, Gail A.
Object Type: Book
System: The UNT Digital Library

Biogeography of Montane Mammals on the Colorado Plateau and Adjacent Regions

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This study identifies the biogeographic factors that structure small mammal communities on mountains of the Colorado Plateau and adjacent regions. Forty six isolated ranges were characterized across a 5-state study area encompassing the Colorado Plateau, including the central high plateaus of Utah and the Basin and Range Province (i.e. the Great Basin and mountains of Arizona and New Mexico). Presence/absence data of 25 montane mammal species were used to explore the interactions between historical and ecological processes affecting local and regional diversity patterns. Multivariate analyses, such as non-metric dimensional scaling, were used to explore factors which influence community composition. Results of these analyses revealed the Colorado River as a significant biogeographic barrier that affects montane mammal community structure. MtDNA cytochrome b sequence variation was analyzed among populations of the long-tailed vole, Microtus longicaudus, sampled from five interior ranges of the Colorado Plateau- Abajo, LaSal, Henry, and Chuska Mts., and Boulder Mountain of the Aquarius Plateau-and analyzed using traditional phylogenetic approaches (parsimony and likelihood) as well as nested clade analysis. Results support previous documentation of a major east-west phylogeographic break occurring between populations southeast of the Colorado River (eastern Arizona, Colorado, Wyoming and New Mexico) and all other western populations, which …
Date: May 2004
Creator: Carr, Carla B.
Object Type: Thesis or Dissertation
System: The UNT Digital Library

Topics in micro electromechanical systems: MEMS engineering and alternative materials for MEMS fabrication.

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This paper deals with various topics in micro electromechanical systems (MEMS) technology beginning with microactuation, MEMS processing, and MEMS design engineering. The fabrication and testing of three separate MEMS devices are described. The first two devices are a linear stepping motor and a continuous rotary motor, respectively; and were designed for the purpose of investigating the frictional and wear properties of silicon components. The third device is a bi-stable microrelay, in which electrical current conducts through a secondary circuit, via a novel probe-interconnect mechanism. The second half focuses on engineering a carbon nanotube / SU-8 photoepoxy nanocomposite for fabricating MEMS devices. A processing method for this material as well as the initial results of characterization, are discussed.
Date: August 2004
Creator: Chapla, Kevin
Object Type: Thesis or Dissertation
System: The UNT Digital Library

Social Skills Intervention for Students with Emotional/Behavioral Disorders Aged Six through Twelve Years: A Combination of a Literature-Based Curriculum and Telecommunications

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Researchers have noted that by providing formal and informal social skills training (SST), the school can become a potential optimal setting that fosters the development of social competence in students with behavioral problems. Indeed, learning to get along with people is one of the most important skills that we can teach students. In order to maximize its effectiveness, SST must be motivating and personally relevant enough for students to want to use the skills. In addition, it must provide opportunities for learned skills to be practiced under varying conditions and in as close to natural situations as possible in order to enhance the transfer of training. The purpose of the study was to investigate the social competence of students aged from six to twelve, diagnosed with emotional/behavioral disorders (E/BD) in a public self-contained school setting, and to increase the students' social competence by using a literature-based method that employs multiage grouping, impersonation, and telecommunications. By providing intensive, literature-based training in a multiage classroom, the SST gave students opportunities to practice skills in a natural, real-life environment and, therefore, increased the likelihood of generalizing these skills in other settings. The employment of impersonation and telecommunications also enhanced students' acquisition of social …
Date: May 2004
Creator: Chen, Kaili
Object Type: Thesis or Dissertation
System: The UNT Digital Library

Reconsidering the Lament: Form, Content, and Genre in Italian Chamber Recitative Laments: 1600-1640

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Scholars have considered Italian chamber recitative laments only a transitional phenomenon between madrigal laments and laments organized on the descending tetrachord bass. However, the recitative lament is distinguished from them by its characteristic attitude toward the relationship between music and text. Composer of Italian chamber recitative laments attempted to express more subtle, refined and sometimes complicated emotion in their music. For that purpose, they intentionally created discrepancies between text and music. Sometimes they even destroy the original structure of text in order to clearly deliver the composer's own voice. The basic syntactic structure is deconstructed and reconstructed along with their reading and according to their intention. The discrepancy between text and music is, however, expectable and natural phenomena since text cannot be completely translated or transformed to music and vice versa. The composers of Italian chamber recitative laments utilized their innate heterogeneity between two materials (music and text) as a metaphor that represents the semantic essence of the genre, the conflict. In this context, Italian chamber recitative laments were a real embodiment of the so-called seconda prattica and through the study of them, finally, we more fully able to understand how the spirit of late Renaissance flourished in Italy in …
Date: December 2004
Creator: Chung, Kyung-Young
Object Type: Thesis or Dissertation
System: The UNT Digital Library