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Cyril Scott's Piano Sonata, Op. 66: A Study of His Innovative Musical Language, With Three Recitals of Selected Works by Mozart, Schumann, Scriabin, Debussy, Ravel and Others

Description: The objective of the dissertation is to examine Cyril Scott's musical language as exhibited in his Piano Sonata, Op. 66. Subjects of discussion include Scott's use of form, rhythm, melody, tonality, and harmony. Also included are a biographical sketch of the composer and his philosophical view of modernism. A comparison of the original version and the revised edition of this sonata, as well as references to Cyril Scott's two other piano sonatas are also included during the examination of his ha… more
Date: May 1995
Creator: Cheung, Ching-Loh
Partner: UNT Libraries
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The Keyboard Percussion Trios of Toru Takemitsu and Toshi Ichiyanagi, a Lecture Recital, together with Three Recitals of Selected Works of Cahn, Maslanka, Miki, Miyoshi, Ptaszynska, Schultz, Wesley-Smith, and Others

Description: The purpose of this study is to examine the various signatures of compositional style as manifested in the keyboard percussion trios Rain Tree by Toru Takemitsu and Wind Trace by Toshi Ichiyanagi. Significant personal interaction between the aforementioned Japanese composers and American composer John Cage justifies an investigation of his influence on their compositional styles. Toru Takemitsu is currently one of the most prolific Japanese composers. In 1981, Takemitsu composed the percussion … more
Date: August 1995
Creator: Finnie, Jimmy W. (Jimmy Wayne)
Partner: UNT Libraries
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Intermolecula transfer and elimination of molecular hydrogen in thermal reactions of unsaturated organic compounds

Description: Two reactions which are important to coal liquefaction include intermolecular transfer and the elimination of two hydrogen atoms. We have designed several model reactions to probe the viability of several hydrogen transfer and elimination pathways. This report described studies on these reactions using organic model compounds.
Date: February 10, 1995
Creator: Suria, S.
Partner: UNT Libraries Government Documents Department
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Crossed molecular beams study of O({sup 1}D) reactions with H{sub 2} molecules

Description: Reaction dynamics of O({sup 1}D) atoms with H{sub 2} molecules was reinvestigated using the crossed molecular beams technique with pulsed beams. The O({sup 1}D) beam was generated by photodissociating O{sub 3} molecules at 248 nm. Time-of-flight spectra and the laboratory angular distribution of the OH products were measured. The derived OH product center-of-mass flux-velocity contour diagram shows more backward scattered intensity with respect to the O({sup 1}D) beam. In contrast to previous s… more
Date: May 1, 1995
Creator: Miau, T.T.
Partner: UNT Libraries Government Documents Department
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The picosecond dynamics of electron-hole pairs in graded and homogeneous CdS{sub x}Se{sub 1-x} semiconductors

Description: Wavelength and composition dependence of the time-resolved luminescence were examined. Effects of macroscopic composition gradient and microscopic alloy disorder on e{sup {minus}}-h{sup +} pair dynamics were probed. Materials with both increasing and decreasing S content with distance from the surface were examined, where 0{le} {times} {le}1 over the full range. In these graded materials, the band gap energy also varies with position. The graded semiconductor luminescence shows strong wavelengt… more
Date: May 1, 1995
Creator: Hane, J.K.
Partner: UNT Libraries Government Documents Department
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Analysis of stray radiation produced by the advanced light source (1.9 GeV synchrotron radiation source) at Lawrence Berkeley Laboratory

Description: The yearly environmental dose equivalent likely to result at the closest site boundary from the Advanced Light Source was determined by generating multiple linear regressions. The independent variables comprised quantified accelerator operating parameters and measurements from synchronized, in-close (outside shielding prior to significant atmospheric scattering), state-of-the-art neutron remmeters and photon G-M tubes. Neutron regression models were more successful than photon models due to low… more
Date: December 31, 1995
Creator: Ajemian, R. C.
Partner: UNT Libraries Government Documents Department
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Excited state carrier dynamics in CdS{sub x}Se{sub 1-x} semisconductor alloys as studied by ultrafast fluorescence spectroscopy

Description: This dissertation discusses studies of the electron-hole pair dynamics of CdS{sub x}Se{sub 1-x} semiconductor alloys for the entire compositional range from x = 1 to x = 0 as examined by the ultrafast fluorescence techniques of time correlated single photon counting and fluorescence upconversion. Specifically, samples with x = 1, .75, .5, .25, and 0 were studied each at a spread of wavelengths about its respective emission maximum which varies according to {lambda} = 718nm - 210x nm. The decays… more
Date: August 1, 1995
Creator: Gadd, S. E.
Partner: UNT Libraries Government Documents Department
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Stereoselective Solid-State NaBH₄ Reduction of 1-Methylpentacyclo[5.4.0.0²,⁶.0³,¹⁰,0⁵,⁹]undecane-8, 11-Dione, Synthesis and Chemistry of Strained Alkenes, and Chemical and Microbial Synthesis of Racemic and Optically Active (S)-4-Hydroxy-2-Cyclohexenone

Description: Part I. Reduction of the 1-methylpentacyclo [5.4.0.0²,⁶.0³,¹⁰,0⁵,⁹]undecane-8, 11-dione (9) with solid NaBH₄ resulted in highly stereoselective reduction of both C=O groups in the substrate, thereby affording the corresponding endo-8, endo-11-diol (11a). The configuration of 11a was established unequivocally by converting 11a into the corresponding cyclic thiocarbonate ester, 12. Part II. Z-1,2-Di(1'-adamantyl)ethene (14) was synthesized with a high degree of stereoselectively in four steps (Sc… more
Date: August 1995
Creator: Xing, Dongxia
Partner: UNT Libraries
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Steepest Sescent on a Uniformly Convex Space

Description: This paper contains four main ideas. First, it shows global existence for the steepest descent in the uniformly convex setting. Secondly, it shows existence of critical points for convex functions defined on uniformly convex spaces. Thirdly, it shows an isomorphism between the dual space of H^{1,p}[0,1] and the space H^{1,q}[0,1] where p > 2 and {1/p} + {1/q} = 1. Fourthly, it shows how the Beurling-Denny theorem can be extended to find a useful function from H^{1,p}[0,1] to L_{p}[1,0] where p … more
Date: August 1995
Creator: Zahran, Mohamad M.
Partner: UNT Libraries
open access

Descriptions and Computation of Ultrapowers in L(R)

Description: The results from this dissertation are an exact computation of ultrapowers by measures on cardinals $\aleph\sb{n},\ n\in w$, in $L(\IR$), and a proof that ordinals in $L(\IR$) below $\delta\sbsp{5}{1}$ represented by descriptions and the identity function with respect to sequences of measures are cardinals. An introduction to the subject with the basic definitions and well known facts is presented in chapter I. In chapter II, we define a class of measures on the $\aleph\sb{n},\ n\in\omega$, in … more
Date: August 1995
Creator: Khafizov, Farid T.
Partner: UNT Libraries
open access

Organic transformations catalyzed by methylrhenium trioxide

Description: Methylrhenium trioxide (MTO), CH{sub 3}ReO{sub 3}, was first prepared in 1979. MTO forms stable or unstable adducts with electron-rich ligands, such as amines (quinuclidine, 1,4-diazabicyclo-octane, pyridine, aniline, 2,2{prime}-bipyridine), alkynes, olefins, 1,2-diols, catechols, hydrogen peroxide, water, thiophenols, 1,2-dithiols, triphenylphosphine, 2-aminophenols, 2-aminothiophenols, 8-hydroxyquinoline and halides (Cl-, Br-, I-). After coordination, different further reactions will occur fo… more
Date: November 1, 1995
Creator: Zhu, Z.
Partner: UNT Libraries Government Documents Department
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Measurement of the polarized forward-backward asymmetry of B quarks using momentum-weighted track charge at SLD

Description: This thesis presents a direct measurement of the parity-violating parameter A{sub b} by analyzing the polarized forward-backward asymmetry of b quarks in e{sup +}e{sup {minus}} {yields} Z{sup 0} {yields} b{bar b}. Data were taken at the Stanford Linear Accelerator Center (SLAC), with the Stanford Large Detector (SLD), which records the products of e{sup +}e{sup {minus}} interactions at a center of mass energy {radical}s = 91.2 GeV/c{sup 2} at the SLAC Linear Collider (SLC). The SLC/SLD experime… more
Date: November 1, 1995
Creator: Junk, T.R.
Partner: UNT Libraries Government Documents Department
open access

Photoelectron holography applied to surface structural determination

Description: Photoemitted electron waves are used as coherent source waves for angstrom-scale holographic imaging of local atomic geometry at surfaces. Electron angular distribution patterns are collected above a sample surface and serve as a record of the interference between source wave and waves scattered from surrounding ion cores. Using a mathematical imaging integral transformation, the three-dimensional structural information is obtained directly from these collected patterns. Patterns measured with … more
Date: May 1, 1995
Creator: Petersen, B.L.
Partner: UNT Libraries Government Documents Department
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Spectral hole burning studies of photosystem II

Description: Low temperature absorption and hole burning spectroscopies were applied to the D1-D2-cyt b{sub 559} and the CP47 and CP43 antenna protein complexes of Photosystem H from higher plants. Low temperature transient and persistent hole-burning data and theoretical calculations on the kinetics and temperature dependence of the P680 hole profile are presented and provide convincing support for the linker model. Implicit in the linker model is that the 684-nm-absorbing Chl a serve to shuttle energy fro… more
Date: November 1, 1995
Creator: Chang, H.C.
Partner: UNT Libraries Government Documents Department
open access

Expanded studies of linear collider final focus systems at the Final Focus Test Beam

Description: In order to meet their luminosity goals, linear colliders operating in the center-of-mass energy range from 3,50 to 1,500 GeV will need to deliver beams which are as small as a few Manometers tall, with x:y aspect ratios as large as 100. The Final Focus Test Beam (FFTB) is a prototype for the final focus demanded by these colliders: its purpose is to provide demagnification equivalent to those in the future linear collider, which corresponds to a focused spot size in the FFTB of 1.7 microns (ho… more
Date: December 1, 1995
Creator: Tenenbaum, Peter Gregory
Partner: UNT Libraries Government Documents Department
open access

The Effects of a Point Loss Contingency on Equivalence

Description: The effects of point loss for symmetrical probe performances on other performances of an observed equivalence class, on the emergence of equivalence performances, and on performances in other contexts were examined. After training six conditional discriminations in three contexts, probes (symmetry, transitivity, symmetrical transitivity) were introduced in contexts 1 and 2. In context 3, only trained conditional discrimination trials were delivered. After demonstrations of equivalence in contex… more
Date: August 1995
Creator: Peuster, Andrea M. (Andrea Michelle)
Partner: UNT Libraries
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I: Low Frequency NMR and NQR Using a dc SQUID. II: Variable-temperature 13C CP/MAS of Organometallics

Description: NMR and NQR at low frequencies are difficult prospects due to small nuclear spin polarization. Furthermore, the sensitivity'of the inductive pickup circuitry of standard spectrometers is reduced as the frequency is lowered. I have used a cw-SQUID (Superconducting QUantum Interference Device) spectrometer, which has no such frequency dependence, to study the local atomic environment of {sup 14}N via the quadrupolar interaction. Because {sup 14}N has spin I = 1 and a 0-6 MHz frequency range, it i… more
Date: November 29, 1995
Creator: Ziegeweid, M.A.
Partner: UNT Libraries Government Documents Department
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Mathematical modeling plasma transport in tokamaks

Description: In this work, the author applied a systematic calibration, validation and application procedure based on the methodology of mathematical modeling to international thermonuclear experimental reactor (ITER) ignition studies. The multi-mode plasma transport model used here includes a linear combination of drift wave branch and ballooning branch instabilities with two a priori uncertain constants to account for anomalous plasma transport in tokamaks. A Bayesian parameter estimation method is used i… more
Date: December 31, 1995
Creator: Quiang, Ji
Partner: UNT Libraries Government Documents Department
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A Comparison of Knowledge and Attitudes between Directors of Athletics and Head Trainers in the Southwest and Southland Conferences Regarding HIV-transmission Issues in Athletics

Description: The purpose of this study was to investigate and compare knowledge and attitudes of directors of athletics and head trainers in the Southwest (Division 1A) and the Southland (Division 1AA) Conferences concerning HIV/AIDS issues related to transmission, prevention, and protection within college athletics programs. The results of this qualitative study provided descriptive data from university administrators within the athletics setting who are responsible for providing adequate student athlete h… more
Date: December 1995
Creator: Whiteley, Harold L. (Harold Lee)
Partner: UNT Libraries
open access

An Investigation of Selected Muscle Potential Activity in Violin/Viola Vibrato

Description: The purpose was to investigate muscle potential during the vibrato motion for successful, healthy violin/viola performers. Electromyography was used to analyze parameters of muscle potentials during performance of a standardized exercise. These parameters were (a) evidence of potentials, (b) patterns of potentials, and (c) timing relationships (24 muscles). This study also sought to replicate and expand performance data from previous studies. Procedures from three pilot studies were used to sta… more
Date: August 1995
Creator: Weber, Matthew J. (Matthew Joseph)
Partner: UNT Libraries
open access

Existence of a Sign-Changing Solution to a Superlinear Dirichlet Problem

Description: We study the existence, multiplicity, and nodal structure of solutions to a superlinear elliptic boundary value problem. Under specific hypotheses on the superlinearity, we show that there exist at least three nontrivial solutions. A pair of solutions are of one sign (positive and negative respectively), and the third solution changes sign exactly once. Our technique is variational, i.e., we study the critical points of the associated action functional to find solutions. First, we define a codi… more
Date: August 1995
Creator: Neuberger, John M. (John Michael)
Partner: UNT Libraries
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In Vitro Studies of Nuclear Changes in Mammalian CNS Neurons Subjected to Rapid Acceleration Impact Injury

Description: An in vitro model of Rapid Acceleration Impact (RAI) Injury was used to study the effects of multiple impact (220 g/impact, 3-5 sec intervals) trauma on cultures of murine CNS cells. Investigations with spinal cord cultures showed that 1) multiple impacts delivered tangential to the plane of cell growth caused neuronal death (12% after 3 impacts to 46% after 10 impacts); 2) multiple impacts delivered normal to the plane of cell growth were much less effective (8% dead after 10 impacts); 3) most… more
Date: May 1995
Creator: Wolf, Amy
Partner: UNT Libraries
open access

Optimizing parallel reduction operations

Description: A parallel program consists of sets of concurrent and sequential tasks. Often, a reduction (such as array sum) sequentially combines values produced by a parallel computation. Because reductions occur so frequently in otherwise parallel programs, they are good candidates for optimization. Since reductions may introduce dependencies, most languages separate computation and reduction. The Sisal functional language is unique in that reduction is a natural consequence of loop expressions; the paral… more
Date: June 1, 1995
Creator: Denton, S.M.
Partner: UNT Libraries Government Documents Department
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The growth of epitaxial iron oxides on platinum (111) as studied by X-ray photoelectron diffraction, scanning tunneling microscopy, and low energy electron diffraction

Description: Three complementary surface structure probes, x-ray photoelectron diffraction (XPD), scanning tunneling microscopy (STM), and low-energy electron diffraction (LEED) have been combined in a single instrument. This experimental system has been utilized to study the structure and growth mechanisms of iron oxide films on Pt(111); these films were formed by first depositing a single overlayer of Fe with a certain coverage in monolayers (ML`s), and then thermally oxidizing it in an oxygen atmosphere.… more
Date: May 1, 1995
Creator: Kim, Y. J.
Partner: UNT Libraries Government Documents Department
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