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Avant-Garde Techniques in the Organ Works of György Ligeti, a Lecture Recital, Together with Three Recitals of Selected Works of J. Alain, J.S. Bach, W.A. Mozart, M. Reger, and Others
The Two Etudes: "Harmonies," and "Coulée" and the Volumina of Ligeti were performed following a lecture on avant-garde techniques in organ works of György Ligeti. The lecture included a brief discussion of earlier twentieth century antecedents of new sound materials and concepts, a biographical sketch of Ligeti and general style features of his works. The main body of the lecture included notational methods, specific style features, and performing scores of Ligeti's three organ works. In addition to the lecture recitals three other public recitals were performed which consisted of solo compositions for the organ.
Date:
December 1980
Creator:
Collins, Glenda Whitman
System:
The UNT Digital Library
Sexual Orientation and the Advanced Placement Art History Survey
This two-part study included a content analysis of an AP art history text and a survey together with interviews with AP art history teachers that embraced both quantitative and qualitative research methodologies. The first phase of the study examined one of the more popular art history survey texts in the AP art history program, Gardner’s Art through the Ages, in terms of how inclusive it is in addressing issues of sexual orientation and, particularly, same-sex perspectives. In addition, the text was examined for evidence of sexual orientation ignored – particularly same-sex perspectives ignored and for heteronormative hegemonies. The second phase investigated the understandings and opinions of AP art history teachers toward the inclusion of sexual orientation and same-sex perspectives in their curriculums and classrooms. Recent recognition of gay, lesbian, and same-sex perspectives in the study of art history has challenged art educators and art historians to begin to consider opening up their curriculums and writings to include these perspectives. These ignored perspectives produce important understandings that enrich and deepen the discourse of art history. The inclusion of gay and lesbian content and same-sex perspectives to the study of AP art history, not only effectively serves the needs of AP art …
Date:
December 2014
Creator:
Bond, Richard P.
System:
The UNT Digital Library
Target Thickness Dependence of Cu K X-Ray Production for Ions Moving in Thin Solid Cu Targets
Measurements of the target thickness dependence of the target x-ray production yield for incident fast heavy ions are reported for thin solid Cu targets as a function of both incident projectile atomic number and energy. The incident ions were F, Al, Si, S, and CI. The charge state of the incident ions was varied in each case to study the target x-ray production for projectiles which had an initial charge state, q, of q = Z₁, q = Z₁ - 1, and q < Z₁ - 1 for F, Al, Si, and S ions and q = Z₁ - 1 and q < Z₁ - 1 for C1 ions. The target thicknesses ranged from 2 to 183 ug/cm². In each case the Cu K x-ray yield exhibits a complex exponential dependence on target thickness. A two-component model which includes contributions to the target x-ray production due to ions with 0 and 1 K vacancies and a three-component model which includes contributions due to ions with 0, 1, and 2 K vacancies are developed to describe the observed target K x-ray yields. The two-component model for the C1 data and the three-component model for the F, Al, Si, S, and C1 …
Date:
December 1977
Creator:
Gardner, Raymond K.
System:
The UNT Digital Library
A Self-Control Approach to Weight Control
A strategy for facilitating post-treatment weight maintenance was examined. Subjects were matched for age, sex, and amount of weight that they desired to lose and were then assigned to one of two groups. Both groups were under contracts and had individually designed self-control programs for weight loss, but subjects in the experimental group lost weight in small steps and subjects in the control group lost weight continuously. The experimental group was predicted to have better weight maintenance after treatment because of a greater number of reinforcements for weight loss. Two-month follow-up data was obtained on the ten subjects who completed the study, and the experimental group was found to have regained significantly less than the control group after treatment ended. The implications of these results for obesity research are discussed.
Date:
December 1976
Creator:
Gardner, Jimmy N.
System:
The UNT Digital Library
A Feasibility Study of Cellular Communication and Control of Unmanned Aerial Vehicles
Consumer drones have used both standards such as Wi-Fi as well as proprietary communication protocols, such as DJI's OcuSync. While these methods are well suited to certain flying scenarios, they are limited in range to around 4.3 miles. Government and military unmanned aerial vehicles (UAVs) controlled through satellites allow for a global reach in a low-latency environment. To address the range issue of commercial UAVs, this thesis investigates using standardized cellular technologies for command and control of UAV systems. The thesis is divided into five chapters: Chapter 1 is the introduction to the thesis. Chapter 2 describes the equipment used as well as the test setup. This includes the drone used, the cellular module used, the microcontroller used, and a description of the software written to collect the data. Chapter 3 describes the data collection goals, as well as locations in the sky that were flown in order to gather experimental data. Finally, the results are presented in Chapter 4, which draws limited correlation between the collected data and flight readiness Chapter 5 wraps up the thesis with a conclusion and future areas for research are also presented.
Date:
December 2019
Creator:
Gardner, Michael Alan
System:
The UNT Digital Library
Words, Music, and Ethnic Elements in Srul-Irving Glick's I Never Saw Another Butterfly, a Lecture Recital, Together with Three [i.e. four] Recitals of Selected Works of J.S. Bach, S. Barber, J. Brahms, A. Vivaldi, G. Fauré, G. Finzi, H. Duparc, M. Mussorgsky and Others
The lecture recital was given on August 12, 1981. The discussion of Glick's i never saw another butterfly consisted of an analysis of the four songs followed by their performance. In addition to the lecture recital, four other public recitals were given; three of solo literature for voice and piano and one of vocal chamber literature.
Date:
December 1981
Creator:
Evelyn, George E. (George Elbert)
System:
The UNT Digital Library
Search for CPT Violation with the FOCUS Experiment and Measurement of Lambda(b) lifetime in the decay Lambda(b) --> J / psi Lambda with the D0 Experiment
This dissertation describes two different projects from two different experiments. We have performed a search for CPT violation in neutral charm meson oscillations using data from the FOCUS Experiment. While flavor mixing in the charm sector is predicted to be small in the Standard Model, it is still possible to investigate CPT violation through a study of the proper time dependence of a CPT asymmetry in right-sign decay rates for D{sup 0} {yields} K{sup -} {pi}{sup +} and {bar D}{sup 0} {yields} K{sup +}{pi}{sup -}. This asymmetry is related to the CPT violating complex parameter {xi} and the mixing parameters x and y: A{sub CPT} {infinity} Re{xi}y - Im{xi}x. We determine a 95% confidence level limit of -0.0068 < Re{xi}y - Im{xi}x < 0.0234. Within the framework of the Standard Model Extension incorporating general CPT violation, we also find 95% confidence level limits for the expressions involving coefficients of Lorentz violation of (-2.8 < N(x,y,{delta}))({Delta}a{sub 0} + 0.6 {Delta}a{sub Z} < 4.8) x 10{sup -16} GeV, (-7.0 < N(x,y,{delta}){Delta}a{sub x} < 3.8) x 10{sup -16} GeV, and (-7.0 < N(x,y,{delta}){Delta}a{sub y} < 3.8) x 10{sup -16} GeV, where N(x,y,{delta}) is a normalization factor that incorporates mixing parameters x, y and …
Date:
December 1, 2004
Creator:
Kryemadhi, Abaz
System:
The UNT Digital Library
An Examination of Two Significant Percussion Compositions: Karlheinz Stockhausen's Zyklus and Ingolf Dahl's Duettino Concertante, a Lecture Recital Together with Five Recitals of Selected Works of A. Ginastera, A. Wilder, W. Kraft, and Others
Zvklus (1959) by Karlheinz Stockhausen and Duettino Concertante (1966) by Ingolf Dahl represent two of the most significant percussion compositions that present the percussionist as soloist. The performer of these works, either unaccompanied or accompanied by a non-percussion instrument, is featured as executant, interpreter, and improvisor. They are regarded as classics in the medium of multiple percussion because of their frequency of performance and their profound effect on notation, musical composition, and the technical expectations of the percussionist. This paper examines these compositions and their historical significance to both percussion literature and the percussionist. Each of these compositions is analzyed by examining instrumentation, compositional procedures, and performance problems. Finally, the notational procedures and role of the performer in these compositions are compared. A discussion of the development of the percussion batterie, percussion ensemble, and the important early solo multiple percussion compositions provides historical perspective for these compositions. This perspective is enhanced by consideration of biography, influences, and stylistic development of each composer.
Date:
December 1987
Creator:
Carney, Michael R. (Michael Reed), 1952-
System:
The UNT Digital Library
Johannes Brahms's Ein deutsches Requiem: A Comparison of the Reduced Orchestration Techniques in Joachim Linckelmann's Chamber Ensemble Version to Brahms's Four-Hand Piano Version
Recognizing the challenges small groups have to program a major work, in 2010, Joachim Linckelmann created a chamber ensemble arrangement of Johannes Brahms's "Ein deutsches Requiem." In 1869, J.M. Reiter-Biedermann published Brahms's four-hand piano arrangement of "Ein deutsches Requiem." Brahms's arrangement serves as an excellent comparison to the chamber ensemble version by Linckelmann, since it can be assumed that Brahms chose to highlight and focus on the parts he deemed the most important. This study was a comparative analysis of the two arrangements and was completed in three stages. The first stage documented every significant change in Joachim Linckelmann's recent chamber arrangement. The second stage classified each change as either a reduction, reorganization, or elimination. The final stage of the analysis was to compare the choices made by Linckelmann to those made by Brahms. The results show that Linckelmann's choices for reduction, reorganization, and elimination closely align with those of Brahms. The only differences between the arrangements can be attributed to Linckelmann's focus on retaining the original orchestral timbre and Brahms's focus on providing the original vocal parts.
Date:
December 2016
Creator:
Hawley, Aaron (Michael Aaron)
System:
The UNT Digital Library
Commonalities Among Women Superintendents in Texas
The major purpose of this descriptive study was to determine common characteristics and influences among women who were serving as public school superintendents of independent districts in Texas during the 1988-89 school year. Commonalities were determined in (1) personal characteristics, (2) personality traits, and (3) perceived barriers to career mobility. A seventy-item survey was developed, validated, and mailed to the thirty-three women superintendents in Texas. Data from the survey were analyzed to determine if commonalities existed among women superintendents. Based on the findings of this study, the following conclusions seem justified: (1) Commonalities in personal characteristics which exist among women superintendents include age, ethnicity, marital status, parenthood, positive attitudes toward being both mothers and superintendents, preference for husbands in the field of education, demonstration of early leadership traits, and self-perceptions of being assertive and risk-taking; (2) Most women superintendents share common views on subjective measures concerning their own personalities, and they rated themselves highest in areas which include self-esteem, general daily activity level, independence, job satisfaction, ability to operate under pressure and practicality; and (3) Most women superintendents perceive similar internal and external barriers to their career mobility; a lack of professional network and employers' negative attitudes toward women are …
Date:
December 1989
Creator:
Howell, Rachel W.
System:
The UNT Digital Library
A Compton camera for spectroscopic imaging from 100 keV to 1 MeV
A review of spectroscopic imaging issues, applications, and technology is presented. Compton cameras based on solid state semiconductor detectors stands out as the best system for the nondestructive assay of special nuclear materials. A camera for this application has been designed based on an efficient specific purpose Monte Carlo code developed for this project. Preliminary experiments have been performed which demonstrate the validity of the Compton camera concept and the accuracy of the code. Based on these results, a portable prototype system is in development. Proposed future work is addressed.
Date:
December 31, 1998
Creator:
Earnhart, J. R. D.
System:
The UNT Digital Library
An Evaluation of Unsaturated Flow Models in an Arid Climate
The objective of this study was to evaluate the effectiveness of two unsaturated flow models in arid regions. The area selected for the study was the Area 5 Radioactive Waste Management Site (RWMS) at the Nevada Test Site in Nye County, Nevada. The two models selected for this evaluation were HYDRUS-1D [Simunek et al., 1998] and the SHAW model [Flerchinger and Saxton, 1989]. Approximately 5 years of soil-water and atmospheric data collected from an instrumented weighing lysimeter site near the RWMS were used for building the models with actual initial and boundary conditions representative of the site. Physical processes affecting the site and model performance were explored. Model performance was based on a detailed sensitivity analysis and ultimately on storage comparisons. During the process of developing descriptive model input, procedures for converting hydraulic parameters for each model were explored. In addition, the compilation of atmospheric data collected at the site became a useful tool for developing predictive functions for future studies. The final model results were used to evaluate the capacities of the HYDRUS and SHAW models for predicting soil-moisture movement and variable surface phenomena for bare soil conditions in the arid vadose zone. The development of calibrated models along …
Date:
December 1, 1999
Creator:
Dixon, J.
System:
The UNT Digital Library
Ecotoxicological Investigations in Effluent-Dominated Stream Mesocosms
The University of North Texas Stream Research Facility (UNTSRF) was designed to examine contaminant impacts on effluent-dominated stream ecosystems. Stream mesocosms, fed municipal effluent from the City of Denton, TX, Pecan Creek Water Reclamation Plant (PCWRP), were treated with 0, 15 or 140 µg/L cadmium for a 10-day study in August 2000. Laboratory toxicity test and stream macroinvertebrate responses indicated that cadmium bioavailability was reduced by constituents of effluent-dominated streams. The Biotic Ligand Model (BLM) for Cd was used to predict a 48 hour Cd EC50 for Ceriodaphnia dubia of 280 µg/L in these effluent-dominated streams. This value is higher that an EC50 of 38.3 µg/L Cd and a 7-day reproduction effect level of 3.3 µg/L Cd generated for C. dubia in reconstituted laboratory hard water. These results support use of a cadmium BLM for establishing site-specific acute water quality criteria in effluent-dominated streams. Although not affected by 15 µg/L treatments, organisms accumulated Cd in 15 µg/L treated streams. Hence, over longer exposure periods, Cd accumulation may increase and a no effect level may be lower than the observed 10-day no effect level of 15 µg/L. A toxicity identification evaluation procedure was utilized with in vitro and in vivo bioassays …
Date:
December 2002
Creator:
Brooks, Bryan W.
System:
The UNT Digital Library
A Study of Mutes for Tuba
One problem in tuba performance is the use of a mute for the tuba. With no research existing a tubist has two methods with which to gain knowledge about mutes; he can learn by trial and error or he can consult a tubist having more experience with the problem. A source is needed to aid a tubist in locating information on mutes for tuba. By learning more about the uses of mutes, the availability of mutes, and the effects of mutes on tuba performance, a tubist will be better equipped to select a mute for personal use. This study is designed to provide, objectively, that knowledge to the tubist.
Date:
December 1973
Creator:
Jones, George W.
System:
The UNT Digital Library
Professional Public Relations and Political Power in Texas
"The problem with which this investigation is concerned is the determination of the role played by public relations professionals in Texas politics. This exploration of modern campaign technology relies on a survey of related literature, published and unpublished, and on personal interviews conducted in 1968-69 with candidates for public office, party workers, public relations experts, campaign managers and consultants, and media specialists involved in the Texas Democratic Gubernatorial primary campaigns of 1968...the findings show that the public relations professionals are playing an ever increasing role in Texas politics and that their expertise and skills play a particularly important role in political campaigning. The Texas Democratic Gubernatorial primary campaign of 1968 illustrates the widespread use of professional consultants by Texas politicians and indicates that their use has had recognizable consequences for the distribution of power and influence."-- leaf [1].
Date:
December 1970
Creator:
Mansfield, Michael W.
System:
The UNT Digital Library
A Comparative Study of Two Choral Conductors: B. R. Henson and Lloyd Pfautsch
Although much has been written on the subject of conducting, it is generally recognized that a great deal can be learned through discussion with and observation of successful conductors. Direct contact with master conductors is an excellent learning tool, but seldom do high school or college choral conductors have the opportunity for direct individual study of the experts in their normal situations. This study provided the opportunity for one practitioner to work with two expert choral conductors. The report was written with the hope that other practitioners might also benefit from the results of the investigation. The purpose of this study was to identify and compare preparations and experiences, philosophies of music, and observable choral concepts which may have contributed to the superior choral achievements of B. R. Henson and Lloyd Pfautsch.
Date:
December 1972
Creator:
Bogle, Gary W.
System:
The UNT Digital Library
Should Corrective Feedback Come Before or After Responding to Establish a "New" Behavior?
The purpose of this study was to determine the optimal form and timing of feedback to establish a "new" behavior. It examined the relative effectiveness of delivering a corrective feedback immediately before the learner responds to a previously incorrect trial as compared to delivering a corrective feedback immediately after the incorrect response is made. Corrective feedback delivered immediately before the next opportunity to respond produced better learning than corrective feedback delivered immediately after a response. The Feedback Before condition decreased errors during training and increased acquisition rates. Results also indicated an interaction between time of feedback delivery and the complexity of the task. As the task complexity increased, the results were more dramatic in favor of the Feedback Before condition.
Date:
December 1997
Creator:
Roberts, Pamela J.
System:
The UNT Digital Library
An Exploratory Study of the Impact of Institutional Policies and Practices of Community and Technical Colleges in Texas on Student Persistence in Online Courses
Online education is the fastest growing form of course delivery of higher education in the United States. It has revolutionized how students and instructors interact in the educational process. Yet students in online courses continue to experience higher attrition rates than their counterparts in traditional face-to-face classes despite the advantages offered by the technology. This study examined the impact that institutional policies and practices at community colleges in the state of Texas have had on student persistence in online courses. It also examined how institutions collect and use data in addressing students' attrition. The findings were used to identify the most effective institutional practices to share with community college systems in Texas in an effort to improve student persistence in online courses across the state. The population for the study consisted of the 50 public two-year community college and the technical college systems in the state of Texas. The study used a mixed method. A theoretical model of institutional impact on online persistence was drawn from the literature review. This model's five categories were then used to construct a survey to collect data on institutional practices and measure the effectiveness in addressing student persistence. Four college systems were identified using …
Date:
December 2010
Creator:
Hills, Fred W.
System:
The UNT Digital Library
As the Need Presents Itself: Social Identity Theory and Signaling in Online Crowdfunding Campaigns
As social interactions increasingly become exclusively online, there is a need for research on the role of identity and social identity in online platforms. Drawing on Symbolic Interactionist approaches to identity, namely Social Identity Theory and Identity Theory, as well as Signaling Theory, this study argues that actors will selectively use religious language to signal their credentials to an audience for the purpose of garnering prosocial behavior in the form of donations to their fundraising campaign. Using latent semantic analysis topic models to analyze the self-presentations of crowdsourcing campaigners on GoFundMe.com, this study found evidence for the presence of signaling to a religious identity online as well as a significant difference in the presentation of need for campaigns originating in areas with high reported religiosity compared to campaigns from areas of low religiosity. In comparison to other campaigns, campaigners engaging in religious signaling were significantly increasing their donations. I suggest that strategically chosen religious topics in online crowdfunding is an example of low-cost identity signaling and provides insight into how signaling happens online and the potential outcomes resulting from this cultural work.
Date:
December 2019
Creator:
Hamilton, Scott J
System:
The UNT Digital Library
Comparison of Visual and Auditory Continuous Performance Tests in Adults
Two continuous performance tests were administered to normal adult subjects. The mode of presentation (visual or auditory) and the type of task (vigilance or distractibility) were varied, and their effects on performance measured. Data were collected on eighty-two subjects, and results indicated that auditory presentation of stimuli increased the difficulty of both tasks. Results also suggest that the distractibility task administered in either mode was more difficult than the vigilance task. Intercorrelations among the four continuous performance tasks are provided. Normative data are presented on all four tasks administered. A measure of symptoms of attention-deficit disorder in adults, the Adult Behavior Checklist, was found to correlate significantly with another measure of pathology, the SCL-90-R.
Date:
December 1993
Creator:
Taylor, Cindy J.
System:
The UNT Digital Library
African-American Achievement in Charter Schools and the Impact of Connectedness, Alignment, Rigor, and Engagement (C.A.R.E.) on School Effectiveness: A Meta-Analysis and Systematic Review
The purpose of the study was to examine the effects of charter schools on African-American students, this study sought to determine if the practice of connectedness, alignment, rigor, and engagement (C.A.R.E.) influenced academic outcomes. The research methodology employed a meta-analysis in conjunction with a systematic review as a cross-reference and to address variables not covered in the meta-analysis. Utilizing a meta-analysis allowed for a synthesis of the existing quantitative published data to consolidate the results. This produced a specific report of achievement data for African-American students. The results revealed that regardless of region, subject, type of assessment, or school focus charter school do positively influence African-American students' academic outcomes. This study also found the practices connectedness, alignment, rigor, and engagement, the C.A.R.E. model when employed in schools improve academic outcomes, especially when combined and implemented with best practices.
Date:
December 2018
Creator:
McCloud, Margie J
System:
The UNT Digital Library
Passionate transformation in vernicle images.
This thesis will examine the iconography of late-thirteenth- through fifteenth-century images of St. Veronica's veil, also known as vernicles. In the late Middle Ages, vernicle iconography changed from iconic representations of Christ's face toward graphic imagery of Christ's suffering during his Passion. These passionate transformations, as I have called them, were affected by the Roman Sudarium relic, popular devotion to Christ's suffering and humanity during his Passion, and the Catholic ritual of Mass. This thesis will consider how the function of vernicle images during Mass was reflected in their iconography throughout Europe between 1250 and 1500.
Date:
December 2004
Creator:
Hoffman, J. Starr
System:
The UNT Digital Library
A Compton scatter camera for spectral imaging of 0.5 to 3.0 MeV gamma rays
A prototype Compton scatter camera for imaging gamma rays has been built and tested. This camera addresses unique aspects of gamma-ray imaging at nuclear industrial sites, including gamma-ray energies in the 0.5 to 3.0 MeV range and polychromatic fields. Analytic models of camera efficiency, resolution and contaminating events are developed. The response of the camera bears strong similarity to emission computed tomography devices used in nuclear medicine. A direct Fourier based algorithm is developed to reconstruct two-dimensional images of measured gamma-ray fields. Iterative ART and MLE algorithms are also investigated. The point response of the camera to gamma rays of energies from 0.5 to 2.8 MeV is measured and compared to the analytic models. The direct reconstruction algorithm is at least ten times more efficient than the iterative algorithms are also investigated. The point response of the camera to gamma rays energies from 0.5 to 2.8 MeV is measured and compared to the analytic models. The direct reconstruction algorithm is at least ten times more efficient than the iterative algorithms and produces images that are, in general, of the same quality. Measured images of several phantoms are shown. Important results include angular resolutions as low as 4.4{degrees}, reproduction of phantom …
Date:
December 31, 1994
Creator:
Martin, J.B.
System:
The UNT Digital Library
The Relationship Between Hostility and Social Support with Chronic Pain and Health Indicators
The purposes of the study were to examine the psychosocial variables of hostility and social support, and their independent relationships with resting physiological levels and chronic pain symptoms, and to examine the independent relationships of chronic pain chronicity and social support with hostility.
Date:
December 1997
Creator:
Witham, Kevin J.
System:
The UNT Digital Library