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Nineteenth century English fresco

Description: The problem of this investigation is determining the artists, places, dates, subjects, and types of frescoes done in nineteenth century England. Included in this paper are discussions of the artists, chronology, the fresco projects, stylistic considerations, reasons for using fresco, and fresco's relevance to the subjects of the paintings.
Date: August 1980
Creator: Jay, Christina Bergquist
Partner: UNT Libraries

The development and evaluation of a guide to teach selected elements of commercial singing

Description: The purpose of this study was to develop a commercial singing guide that could be used as an aid in teaching selected elements of commercial singing. It addressed itself specifically to the following problems: determining how the selected elements of the commercial vocal style are produced, developing a guide for teaching the production of this vocal style to trained and untrained singers and evaluating the effectiveness of the guide.
Date: August 1980
Creator: Lebon, Rachel L.
Partner: UNT Libraries

Post-colonial economic development of the United Republic of Tanzania

Description: The economic development of Tanzania is analyzed in detail between the years from 1961 to 197. The dual policy of development adopted by the Tanzanian government called for unbalanced growth in both agriculture and industry. To a certain extent that policy was proven successful.
Date: May 1980
Creator: Ashagre, Tadesse
Partner: UNT Libraries

The physiology of Azotobacter vinelandii cysts

Description: The value of the adenylate energy charge [(ATP)+1/2(ADP)/(ATP)+(ADP)+(AMP)] in Azotobacter vinelandii cells was monitored during growth and germination in flask cultures. The miximal value of 0.88 was attained during mid-log phase; this declined gradually to 0.50 by late stationary phase.
Date: December 1980
Creator: Aladegbami, Solomon L.
Partner: UNT Libraries

An analysis and evaluation of church administration in the Evangelical Churches of West Africa, Nigeria

Description: The purposes of this study were to discover the current status of church administration of the Evangelical Churches of West Africa (ECWA) and to offer recommendations. In order to achieve these purposes, an extensive review of the professional literature dealing with church administration and management was conducted, and a questionnaire was constructed and categorized into the following broad areas of church administration: (1) church government, (2) educational leadership (3) evangelism and missions, (4) financial management, and (5) general administration.
Date: August 1980
Creator: Kore, Danfulani Zamani
Partner: UNT Libraries

Blood pressure biofeedback and relaxation training: the effects of home practice on reduction of blood pressure in persons with essential hypertension

Description: Blood pressure biofeedback at home was compared with relaxation training and a combination of the two procedures for the treatment of essential hypertension, Ten subjects were taught to monitor blood pressure (BP) at home with electronic sphygmomanometers designed for self-use.
Date: August 1980
Creator: Bradley, Robert W. (Robert Wayne)
Partner: UNT Libraries

The Chemistry of HO{Sub 2}NO{Sub 2} and the Photochemistry of the HO{Sub X}-NO{Sub X}-CO{Sub X} System

Description: The objectives of this work were: (1) to investigate formation and destruction reactions of peroxynitric acid, HO{sub 2}NO{sub 2} and (2) to study the photochemistry and kinetics of the HO{sub x} - NO{sub x} - CO{sub x} system were also studied. Investigations were done using infrared spectroscopy to observe the behavior of species involved with the reactions of interest. Several techniques were used, including expansion of reactants into an evacuated cell, static cell decays under constant illumination, and periodic photolysis of flow systems, Infrared absorption cross sections were obtained for CO, CO{sub 2}, NO, NO{sub 2}, N{sub 2}O{sub 5}, HNO{sub 3}, H{sub 2}O{sub 2}, and H{sub 2}O. The spectroscopic measurements were used to derive kinetic information on the systems under study,
Date: August 1, 1980
Creator: Littlejohn, David
Partner: UNT Libraries Government Documents Department

Bubble Dynamics at Gas-Evolving Electrodes

Description: Nucleation of bubbles, their growth by diffusion of dissolved gas to the bubble surface and by coalescence, and their detachment from the electrode are all very fast phenomena; furthermore, electrolytically generated bubbles range in size from ten to a few hundred microns; therefore, magnification and high speed cinematography are required to observe bubbles and the phenomena of their growth on the electrode surface. Viewing the action from the front side (the surface on which the bubbles form) is complicated because the most important events occur close to the surface and are obscured by other bubbles passing between the camera and the electrode; therefore, oxygen was evolved on a transparent tin oxide "window" electrode and the events were viewed from the backside. The movies showed that coalescence of bubbles is very important for determining the size of bubbles and in the chain of transport processes; growth by diffusion and by coalescence proceeds in series and parallel; coalescing bubbles cause significant fluid motion close to the electrode; bubbles can leave and reattach; and bubbles evolve in a cycle of growth by diffusion and different modes of coalescence. An analytical solution for the primary potential and current distribution around a spherical bubble in contact with a plane electrode is presented. Zero at the contact point, the current density reaches only one percent of its undisturbed value at 30 percent of the radius from that point and goes through a shallow maximum two radii away. The solution obtained for spherical bubbles is shown to apply for the small bubbles of electrolytic processes. The incremental resistance in ohms caused by sparse arrays of bubbles is given by {Delta}R = 1.352 af/kS where f is the void fraction of gas in the bubble layer, a is the bubble layer thickness, k is the conductivity of gas ...
Date: December 1, 1980
Creator: Sides, Paul J.
Partner: UNT Libraries Government Documents Department

A Study of Fundamental Reaction Pathways for Transition Metal Alkyl Complexes: [Parts 1 and 2]

Description: I. This study reports the rapid reaction under mild conditions of internal or terminal alkynes with methyl (acetyl~ acetonato) (triphenylphosphine) nickel (1) in either aromatic or ether solvents. In all cases vinylnickel products 2 are formed by insertion of the alkyne into the nickel=methyl bond. These complexes may be converted into a variety of organic products (e.g. alkenes, esters, vinyl halides) by treatment with appropriate reagents. Unsymmetrical alkynes give selectively the one regioisomer with the sterically largest substituent next to the nickel atom. In order to investigate the stereochemistry of the initial insertion, a x-ray diffraction study of the reaction of 1 with diphenylacetylene was carried out. This showed that the vinylnickel complex formed by overall trans insertion was the product of the reaction. Furthermore, subsequent slow isomerization of this complex, to a mixture of it and the corresponding cis isomer, demonstrated that this trans addition product is the kinetic product of the reaction. In studies with other alkynes, the product of trans addition was not always exclusively (or even predominantly) formed, but the ratio of the stereoisomers formed kinetically was substantially different from the thermodynamic ratio. Isotope labeling, added phosphine, and other experiments have allowed us to conclude that the mechanism of this reaction does involve initial cis addition. However, a coordinatively unsaturated vinylnickel complex is initially formed which can undergo rapid, phosphine-catalyzed cis-trans isomerization in competition with its conversion to the isolable phosphine-substituted kinetic reaction products. II. The reaction of CpMo(CO){sub 3}H (1a) with CpMo(CO){sub 3}R (2, R= CH{sub 3}, C{sub 2}H{sub 5}) at 50{degrees} C in THF gives the aldehyde RCHO and the dimers [CpMo(CO){sub 3}]{sub 2} (3a) and [CpMo(CO){sub 2}]{sub 2} (4a). Labeling one of the reactants with a methylcyclopentadienyl ligand it was possible to show that the mixed dimers MeCpMo(CO){sub 3}-(CO){sub 3}MoCp (3b) and MeCpMo(CO){sub ...
Date: June 1, 1980
Creator: Huggins, John Mitchell
Partner: UNT Libraries Government Documents Department

The Application of Some Hartree-Fock Model Calculation to the Analysis of Atomic and Free-Ion Optical Spectra

Description: Techniques for applying ab-initio calculations to the is of atomic spectra are investigated, along with the relationship between the semi-empirical and ab-initio forms of Slater-Condon theory. Slater-Condon theory is reviewed with a focus on the essential features that lead to the effective Hamiltonians associated with the semi-empirical form of the theory. Ab-initio spectroscopic parameters are calculated from wavefunctions obtained via self-consistent field methods, while multi-configuration Hamiltonian matrices are constructed and diagonalized with computer codes written by Robert Cowan of Los Alamos Scientific Laboratory. Group theoretical analysis demonstrates that wavefunctions more general than Slater determinants (i.e. wavefunctions with radial correlations between electrons) lead to essentially the same parameterization of effective Hamiltonians. In the spirit of this analysis, a strategy is developed for adjusting ab-initio values of the spectroscopic parameters, reproducing parameters obtained by fitting the corresponding effective Hamiltonian. Secondary parameters are used to "screen" the calculated (primary) spectroscopic parameters, their values determined by least squares. Extrapolations of the secondary parameters determined from analyzed spectra are attempted to correct calculations of atoms and ions without experimental levels. The adjustment strategy and extrapolations are tested on the K I sequence from K{sup 0+} through Fe{sup 7+}, fitting to experimental levels for V{sup 4+}, and Cr{sup 5+}; unobserved levels and spectra are predicted for several members of the sequence. A related problem is also discussed: Energy levels of the Uranium hexahalide complexes, (UX{sub 6}){sup 2-} for X= F, Cl, Br, and I, are fit to an effective Hamiltonian (the f{sup 2} configuration in O{sub h} symmetry) with corrections proposed by Brian Judd.
Date: August 6, 1980
Creator: Hayhurst, Thomas Laine
Partner: UNT Libraries Government Documents Department

Modeling of Changing Electrode Profiles

Description: A model for simulating the transient behavior of solid electrodes undergoing deposition or dissolution has been developed. The model accounts for ohmic drop, charge transfer overpotential, and mass transport limitations. The finite difference method, coupled with successive overrelaxation, was used as the basis of the solution technique. An algorithm was devised to overcome the computational instabilities associated with the calculations of the secondary and tertiary current distributions. Simulations were performed on several model electrode profiles: the sinusoid, the rounded corner, and the notch. Quantitative copper deposition data were obtained in a contoured rotating cylinder system, Sinusoidal cross-sections, machined on stainless steel cylinders, were used as model geometries, Kinetic parameters for use in the simulation were determined from polarization curves obtained on copper rotating cylinders, These parameters, along with other physical property and geometric data, were incorporated in simulations of growing sinusoidal profiles. The copper distributions on the sinusoidal cross-sections were measured and found to compare favorably with the simulated results. At low Wagner numbers the formation of a slight depression at the profile peak was predicted by the simulation and observed on the profile. At higher Wagner numbers, the simulated and experimental results showed that the formation of a depression was suppressed. This phenomenon was shown to result from the competition between ohmic drop and electrode curvature.
Date: December 1, 1980
Creator: Prentice, Geoffrey Allen
Partner: UNT Libraries Government Documents Department

Probabilistic Simulation of Subsurface Fluid Flow: A Study Using a Numerical Scheme

Description: There has been an increasing interest in probabilistic modeling of hydrogeologic systems. The classical approach to groundwater modeling has been deterministic in nature, where individual layers and formations are assumed to be uniformly homogeneous. Even in the case of complex heterogeneous systems, the heterogeneities describe the differences in parameter values between various layers, but not within any individual layer. In a deterministic model a single-number is assigned to each hydrogeologic parameter, given a particular scale of interest. However, physically there is no such entity as a truly uniform and homogeneous unit. Single-number representations or deterministic predictions are subject to uncertainties. The approach used in this work models such uncertainties with probabilistic parameters. The resulting statistical distributions of output variables are analyzed. A numerical algorithm, based on axiomatic principles of probability theory, performs arithmetic operations between probability distributions. Two subroutines are developed from the algorithm and incorporated into the computer program TERZAGI, which solves groundwater flow problems in saturated, multi-dimensional systems. The probabilistic computer program is given the name, PROGRES. The algorithm has been applied to study the following problems: one-dimensional flow through homogeneous media, steady-state and transient flow conditions, one-dimensional flow through heterogeneous media, steady-state and transient flow conditions, and two-dimensional steady-stte flow through heterogeneous media. The results are compared with those available in the literature.
Date: March 1, 1980
Creator: Buscheck, Timothy Eric
Partner: UNT Libraries Government Documents Department

A Content Analysis of Press Coverage of the 1975-1976 Lebanese Civil War by "The New York Times" and "The Times" of London

Description: This study was designed to determine (a) the extent of the coverage in total wordage; (b) the direction and intensity of the articles; and (c) the impression conveyed by each newspaper toward the two main parties of the war. The findings show that (a) The New York Times devoted nearly twice as many words to the war as The Times of London; (b) the majority of the articles were neutral; (c) The New York Times was more favorable to the leftists and was as favorable to the rightists as The Times of London; and (d) the two newspapers were consistent in direction, and all deviation from neutrality remained within the limits of mild intensity.
Date: May 1980
Creator: Husni, Samir A.
Partner: UNT Libraries

A Survey and Analysis of the Relationship and Approach of Texas Museums to Contemporary Art

Description: The problem of this survey is to ascertain the relationship between nine Texas art museums and contemporary art, defined for this study as art of the 1970s. The role of the museum and its involvement with contemporary art are also perceived in respect to the general public. The purpose of this study was (1) to visit nine Texas art museums and interview the director or curator of contemporary art, using a standardized questionnaire, and (2) to present and analyze the responses to the questionnaire. The eight questions comprising the survey were formulated to include both practical and philosophical related concerns. Therefore, the survey responses and final conclusions reflect a variety of issues ranging from the physical accommodation of diverse contemporary works to the more fundamental philosophical issue concerned with contemporary art's presence in the museum and the institution's function.
Date: December 1980
Creator: Porter, Linda Williams
Partner: UNT Libraries

Self-Esteem, Sex Roles, and Fundamentalist Religious Belief

Description: Recent sex role research suggested that androgynous subjects demonstrated better adjustment than sex-typed subjects. Fundamentalist religious belief, however, has strongly supported sex role differentiation. This study hypothesized that the effect of appropriate sex role typing or androgyny on self-esteem would depend on religious belief. Although this hypothesis was not supported, a main effect on sex roles for females was obtained; androgynous females had a higher self-esteem level than feminine females. In addition, males in this study had a higher self-esteem level than females.
Date: May 1980
Creator: Zervopoulos, John Anthony
Partner: UNT Libraries

Duals and Weak Completeness in Certain Sequence Spaces

Description: In this paper the weak completeness of certain sequence spaces is examined. In particular, we show that each of the sequence spaces c0 and 9, 1 < p < c, is a Banach space. A Riesz representation for the dual space of each of these sequence spaces is given. A Riesz representation theorem for Hilbert space is also proven. In the third chapter we conclude that any reflexive space is weakly (sequentially) complete. We give 01 as an example of a non-reflexive space that is weakly complete. Two examples, c0 and YJ, are given of spaces that fail to be weakly complete.
Date: August 1980
Creator: Leavelle, Tommy L. (Tommy Lee)
Partner: UNT Libraries

The Relationship of Self Concept to Participation in Extra-Curricular Activity Among Fourth Grade Children

Description: This study attempted to determine the relationship between self concept and participation in extra-curricular activity: specifically, whether self concept differentiates between participants and nonparticipants and whether self concept scores differed between male and female participants. Sixty fourth graders were assessed on self concept by the Piers-Harris Children's Self Concept Scale. Participation or non-participation was determined by written parental response. Analysis of variance was used, with level of significance at .05. There was no evidence that participants can be distinguished from non-participants on measures of self concept. Scores on self concept did not differ for males and females.
Date: December 1980
Creator: Campbell, Kelli M.
Partner: UNT Libraries

The Stereochemistry of 1,4-Di-Tert-Butyl-1,4-Dihydronaphthalene

Description: A new approach was taken in the elucidation of the stereochemistry of the symmetrically 1,4-disubstituted 1,4-dihydronaphthalene systems which show deceptively simple NMR spectra. Thus, the stereochemistry of 1,4-di-tert-butyl-1,4-dihydronaphthalene was established unequivocally. The epoxide derivative, the subject compound, 1,4-di-tertbutyl-2, 3-epoxy-1, 4-dihydronaphthalene, was formed and its trans stereochemistry was established by ¹H NMR and ¹³C NMR. A lanthanide shift study was also conducted on the epoxide derivative, further proving the trans stereochemistry. One of the lanthanide shifted spectra was analyzed using the LAACOON III computer program and the true coupling constants obtained this way were in excellent agreement with the experimental spectrum. Establishing the trans stereochemistry of the epoxide derivative proved the trans stereochemistry of 1,4-di-tert-butyl-1,4-dihydronaphthalene.
Date: December 1980
Creator: McDaniel, Oya A.
Partner: UNT Libraries

Relationship of Bender-Gestalt Signs to Acting-Out Behavior in an Educational Program for Troubled Adolescents

Description: The present study investigated the relationship between indicators on the Bender Visual Motor Gestalt Test and acting-out behavior shown by 58 male and 40 female adolescents in a behaviorally oriented, alternative educational program, Acting-out behavior was measured by assessing the number of timeouts students received during their first 25 days in the program. Two Bender composite indexes were calculated--l0 emotional indicators recommended by Koppitz and 12 indicators believed related to acting-out behavior or control problems. Results found that the index of Bender acting-out indicators correlated with number of timeouts. The Koppitz index did not correlate with timeouts, suggesting lack of internal consistency. Five individual indicators correlated with number of timeouts.
Date: December 1980
Creator: Caudle, Richard John
Partner: UNT Libraries

An Institutional Approach to Economic and Social Patterns of Emulation in Colombia, South America

Description: This study is concerned with the historical development and perpetuation of the leisure class in the Colombian society. The study is based on Thorstein Veblen's Theory of the Leisure Class. The main purpose of this study is to analyze in terms of the evolution of social institutions the problems that the Colombian society faces today. Spanish values and traditions are analyzed, as well as more recent values and modes of behavior adopted by the leisure class. Institutions such as the church, the educational, employment and political apparatus are analyzed in terms of how they contribute to the perpetuation of elites. This study concludes that as long as there is economic surplus in society, a leisure class will exist. The elites forming the leisure class may be displaced by counter-elites, which in turn will conform a new leisure class.
Date: May 1980
Creator: Fernandez, Mauricio, 1955-
Partner: UNT Libraries

The Flute Professors of the Paris Conservatoire from Devienne to Taffanel, 1795-1908

Description: Since its establishment (1795), the Paris Conservatoire has attracted top-ranking flutists who, through their playing, teaching, writings, and attitudes, (toward the Boehm flute, for example), have influenced flutists and composers throughout Europe. Through Paul Taffanel, who founded the Societe d'Instruments a Vent in 1876, standards of woodwind playing reached new heights. When Taffanel's students, Georges Laurent and Georges Barrere, emigrated to the United States, they influenced the style and development of flute-playing in this country. Through Barrere's famous student, William Kincaid, there arose what might be termed the American school. The intent of this paper is to place these flutists in perspective. The professors are discussed chronologically; information on the style, works, students, and influence of each man is included.
Date: August 1980
Creator: Ahmad, Patricia
Partner: UNT Libraries

A Kinematic Analysis of the Baseball Batting Swings Involved in Opposite-Field and Same-Field Hitting

Description: The purpose of the study was to examine selected mechanical factors involved in hitting a baseball to the same and opposite fields. Special emphasis was placed on an identification of those factors which distinguish players of different hitting abilities. Twenty male college level baseball players, ten in each of two groups, hit six pitched baseballs, three each to two assigned areas of the playing field. The movement patterns for the opposite field and same field batting swings appeared to be similar in form with differences between the two swings due to (a) differences in the angular displacements at the left wrist and left elbow joints and (b) differences in the temporal characteristics.
Date: December 1980
Creator: Pfautsch, Eric W.
Partner: UNT Libraries

Human Learned Helplessness: Uncontrollable Negative Feedback or Total Amount of Negative Feedback?

Description: To determine if learned helplessness results from lack of control over negative events or simply the number of negative events experienced, 60 university students were assigned to one of five treatments: controllable low negative, uncontrollable low negative, controllable high negative, uncontrollable high negative, and no treatment. Backward digit and letter span tasks served as test tasks. The generally nonsignificant results were discussed as possibly due to a procedural error. Further research on this question is needed.
Date: August 1980
Creator: Martin, Daniel Richard
Partner: UNT Libraries

A Comparison in the Dallas-Fort Worth Metroplex Between the State of Public Relations Education and the Views of Public School Public Information Directors and University Journalism Department Chairmen Concerning Public Relations Education

Description: Data obtained through interviews with eleven directors of school public information directors and four university chairmen in the Dallas-Fort Worth Metroplex indicated that they are generally satisfied with public relations education being housed in the journalism department, with course format, and with undergraduate study and specialization; and that they are dissatisfied with practitioner-educator relationships. Some of their recommendations included that graduatelevel study be offered more often, and that more emphasis be placed in the curriculum on specific areas of public relations, the social sciences, and the news-editing side of communications studies.
Date: May 1980
Creator: Ramsey, Patricia Kingsley
Partner: UNT Libraries