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A Study of L-Shell X-Ray Production Cross Sections Due to [Hydrogen-1], [Helium-4], and [Lithium-7] Ion Bombardment of Selected Thin Rare Earth and ₈₂Pb Targets

Description: Thin target L-Shell x-ray production cross sections for protons incident on ₆₂Sm and ₇₀Yb in the energy range of 0.3 to 2.4 MeV/amu, alpha particles incident on ₆₂Sm, ₇₀Yb, and ₈₂Pb in the energy range of 0.15 to 4.8 MeV/amu, and lithium ions incident on ₅₈Ce, ₆₀Nd, ₆₂Sm, ₆₆Dy, ₆₇Ho, ₇₀Yb, and ₈₂Pb in the energy range of 0.8 to 4.4 MeV/amu have been measured. The cross section data have been compared to the planewave Born approximation (PWBA) and the PWBA modified to include binding energy and … more
Date: May 1978
Creator: Light, Glenn Michael
Partner: UNT Libraries
open access

Production and Energy Metabolism in Three Benthic Insect Populations in a Small North Central Texas Pond

Description: Annual energy budgets of dominant benthic macro-invertebrates were examined during November 1973 to October 1974 from the benthos of a small pond ecosystem in north-central Texas. Estimates of annual secondary production (Hynes and Coleman 1968) were Procladius s. (Diptera, Chironimidae), 2.4 g m^-2 y^-1 (13 kcal m^-2 y^-1 ); Tendipes decorus (Diptera, Chironomidae), 6.0 g m^-2 y^-1 (40 kcal m^-2 y^-1 ); Brachycercus sp. (Ephemeroptera, Caenidae), 1.9 g m^-2 y^-1 (11 kcal m^-2 y^-1). Energy met… more
Date: May 1978
Creator: Benson, Daniel J.
Partner: UNT Libraries
open access

SUPERCONDUCTING TRANSITION EDGE BOLOMETER AND NOISE IN THIN FILMS

Description: We report the development of the composite superconducting transition edge bolometer. The temperature sensitive element is an aluminum strip evaporated onto the sapphire substrate. A bismuth film evaporated on the reverse side of the substrate is used to absorb the submillimeter radiation. The noise limitation of the bolometer is calculated. The fabrication and measured performance are described. The best electrical NEP (noise-equivalent-power) obtained is (1.7 {+-} 0.1) x 10{sup -15} WHz{sup -… more
Date: June 1, 1978
Creator: Yeh, Nan-Hsiung
Partner: UNT Libraries Government Documents Department
open access

Subdirectly Irreducible Semigroups

Description: Definition 1.1. The ordered pair (S,*) is a semi-group iff S is a set and * is an associative binary operation (multiplication) on S. Notation. A semigroup (S,*) will ordinarily be referred to by the set S, with the multiplication understood. In other words, if (a,b)e SX , then *[(a,b)] = a*b = ab. The proof of the following proposition is found on p. 4 of Introduction to Semigroups, by Mario Petrich. Proposition 1.2. Every semigroup S satisfies the general associative law.
Date: December 1978
Creator: Winton, Richard Alan
Partner: UNT Libraries
open access

An Analysis of Space and an Investigation Into the Nature of the Block-Out Process in My Current Work

Description: The purpose of the creative project was to investigate the relationship of figure to ground in a series of paintings in order to better understand how I perceive the space in my work and to analyze the block-out process. Questions regarding the figure/ground relationship are as follow: 1. What is figure, what is ground and what is ambiguous as I see it? 2. What effects do overlapping, shape size, color and value have upon the figure/ground relationship? The portion of the investigation concerni… more
Date: May 1978
Creator: Werner, Lois Wetzel
Partner: UNT Libraries
open access

Line Width Parameters and Center Frequency Shifts in the Rotational Spectrum of Methyl Cyanide

Description: Measurement of the line width parameters of a molecule is of interest because collision diameters can be calculated from them. This gives an effective size of the molecule when it is involved in interactions with other molecules. Further, specific types of interactions can be inferred from detailed information about the dependence of the line width upon pressure. In this paper, an experiment for measuring line width parameters for methyl cyanide is described and the results of the experiment ar… more
Date: May 1978
Creator: Swindle, David L.
Partner: UNT Libraries
open access

The Establishment of Norms for Two Selected Tennis Skills Tests at North Texas State University

Description: The purposes of this study were 1) to establish validity and reliability for a modified service test, 2) to determine male and female norms for the service test, and 3) to establish norms for the Kemp-Vincent Rally Test. Subjects were 677 students enrolled in beginning and intermediate tennis classes at North Texas State University, Denton, Texas. Data were analyzed by the two-way analysis of variance to establish reliability. Norms were established by converting raw scores to normalized standa… more
Date: August 1978
Creator: Avery, Cathy Ann
Partner: UNT Libraries
open access

Nymphs of the Stonefly (Plecoptera) Genus Taeniopteryx of North America

Description: Nymphs of the 9 Nearctic Taeniopteryx species were reared and studied, 1976-78. Two morphologically allied groupings, the Taeniopteryx burksi-maura, and T. litalonicera- starki complexes corresponded with adult complexes. A key separating 7 species, based primarily upon pigment patterns and abdominal setal arrangements, was constructed. Taeniopteryx lita and T. starki were indistinguishable; T. burksi was separated from T. maurawhen no developing femoral spur was present. This study was based u… more
Date: May 1978
Creator: Fullington, Kate Matthews
Partner: UNT Libraries
open access

An Evaluation of the Denton County Safety Education Program in Denton, Texas

Description: The purpose of this study was to assess the effectiveness of the Denton County Safety Education Program. Subjects were 117 driving-while-intoxicated offenders who completed this alcohol reeducation program between June 1975 to June 1976. Questionnaires were used as evaluative measures. Data were analyzed in three steps: 1) two two-way ANOVAs with one repeated measure; 2) two Pearson product moment correlations; and 3) a Fisher's Z test. Conclusions of the investigation were that (1) both proble… more
Date: December 1978
Creator: Rayburn, Susan L.
Partner: UNT Libraries
open access

Chronic Alterations in Joint Flexibility Associated with Aerobic Dance Instruction of College Age Females

Description: The purposes of this study were (1) to determine if three selected aerobic dance related conditions would result in chronic alterations of flexibility of college women and (2) to compare flexibility measures of college age females during a semester of aerobic dance instruction. Subjects were sixty-three college women enrolled in aerobic dance, bowling, and archery classes. Eight flexibility measures were obtained during the third and eleventh weeks of the experimental period. Data were analyzed… more
Date: August 1978
Creator: Cooper, Melisa Lynne
Partner: UNT Libraries
open access

A Study of the Inter-Rater Reliability of the Behavioral Characteristics Progression

Description: The purposes of this study were to compare the consistency of assessment between (1) a team of evaluators composed of personnel from a visiting state school; (2) the home team of evaluators and similar data, currently available for the subjects; (3) the visiting team of evaluators and similar data, currently available for the subjects; and (k) specific professional members of the team of evaluators from the home school personnel and the similar professional members from the visiting school pers… more
Date: December 1978
Creator: Smith, Richard L., fl. 1978-
Partner: UNT Libraries
open access

Synthesis and magnetic properties of polynuclear metal complexes

Description: a series of complexes of the type MLnX where M=Cu(II), Ni(II), and Cr(III), L=β-diketonate (n=1 for Cu (II) and Ni(II), n=2 for Cr(III)) and X=bridging anion was synthesized in order to study the effect of the bridging group on the magnetic exchange interaction parameter, J.
Date: December 1978
Creator: Pruettiangkura, Pote
Partner: UNT Libraries
open access

Mulima

Description: Mulima is a work intended to be used as the score for a ballet. The composition utilizes a large orchestra: 2-3-3-3, 4-3-3-1, 5 percussion, and full strings. The work is constructed in one large act which is comprised of three scenes and lasts approximately 45 to 50 minutes.
Date: August 1978
Creator: Long, David J.
Partner: UNT Libraries
open access

Isolation and Characterization of Yeast NAD⁺ Kinase

Description: The cytoplasmic enzyme, NAD⁺ kinase (ATP: NAD⁺ 2-phosphotransferase, [E.C. 2.7.1.23}) has been characterized and purified from yeast. A continuous fluorescence assay was developed. A purification procedure was developed utilizing NAD⁺-Agarose affinity column chromatography.
Date: May 1978
Creator: Tseng, Yuh-Miin
Partner: UNT Libraries
open access

Criteria and procedures used in the selection of high school principals in selected Texas school districts

Description: The problem of this study was to determine the criteria and procedures used by superintendents of selected public high schools districts in Texas in the selection of high school principals. This study had two main purposes : (1) to ascertain criteria and procedures that the superintendents of selected public school districts of Texas are using in the selection of high school principals, and (2) to make recommendations to improve the selecting of high school principals.
Date: May 1978
Creator: Williams, Walter Earl
Partner: UNT Libraries
open access

The attitudes of presidents and chief academic officers toward faculty collective bargaining in Texas' community and junior colleges

Description: The problem of this study was to collect, analyze, and interpret the attitudes of administrators in Texas' community and junior colleges with respect to faculty collective bargaining. The purpose of the study were (1) to assess the attitudes of administrators in higher education institutions in Texas toward faculty collective bargaining, and (2) to determine if a relationship exists between attitudes of administrators toward faculty collective bargaining and seventeen independent variables.
Date: August 1978
Creator: Birmingham, Joseph C.
Partner: UNT Libraries
open access

A Study of the Functions Performed by Store Managers in Chain Supermarkets

Description: The problem with which this dissertation is concerned is that of determining the true role performed by the chain supermarket store managers. A comparative study is made of chain supermarket store managers, supermarket chain-level managers, and non-food chain retail store managers and their ranking and rating of the importance of fifteen work functions ordinarily performed by retail store managers. The hypotheses of the study state that there will be a statistically significant difference in th… more
Date: December 1978
Creator: DeHay, Jerry M.
Partner: UNT Libraries
open access

The Incorporation of Silkscreen Techniques in the Decoration of Raku-Fired Ceramics

Description: The questions answered by this investigation are as follows: 1. Which silkscreens and stencils will work in screening flat and three-dimensional objects? 2. Which mediums and coloring agents will survive a glaze firing to produce an acceptable image? 3. How can the image be modified by screening during the different stages of a ceramic piece (wet, green, bisque, glazed)? 4. What glazes and glaze applications will be compatible? 5. Generally, what is the relationship between the image and the ob… more
Date: May 1978
Creator: Allen, James Franklin
Partner: UNT Libraries
open access

REDUCTION OF NITRIC OXIDE BY CARBON MONOXIDE OVER A SILICA SUPPORTED PLATINUM CATALYST: INFRARED AND KINETIC STUDIES

Description: The reduction of nitric oxide by carbon monoxide over a 4.5 weight precent platinum catalyst supported on silica was studied at 300 C. Reaction rate data was obtained together with in situ infrared spectra of species on the catalyst surface. The kinetics of the system were found to exhibit two distinct trends, depending on the molar ratio of CO/NO in the reactor. For net reducing conditions (CO/NO> 1) the catalyst underwent a transient deactivation, the extent of which was dependent on the s… more
Date: August 1, 1978
Creator: Lorimer, D.H.
Partner: UNT Libraries Government Documents Department
open access

The Effect of Two Levels of Noise, Two Types of Noise, and Anxiety on Student Performance of a Coding Task

Description: This study dealt with the effect of low-level noise and high-level noise, of white noise and varied noise, and of high manifest anxiety and low manifest anxiety on college students' performance on a coding task. The conclusions of the study, based upon the hypotheses, were as follows: 1. Level of anxiety does not affect performance on a coding task. 2. The level of white and level of varied noise does not affect performance on a coding task. 3. Varied noise has a positive effect on performance … more
Date: August 1978
Creator: Nearing, William E.
Partner: UNT Libraries
open access

The Combination of Sewing Techniques, Manufactured Fabric, Paper, Paint, as a Creative Process

Description: My problem was to investigate some of the possibilities which have arisen through my previous work by producing twelve fabric pieces and eight paper pieces. Specifically, the following questions were to be examined: 1. Are there traditional designs or techniques in quilts of the past that can be utilized in my own work? 2. Are the primary colors (red, yellow, blue) in manufactured unaltered fabric more effective than painted or altered fabric? 3. Is there a correlation between the color and ima… more
Date: May 1978
Creator: Outlaw, Marilyn Jeanne
Partner: UNT Libraries
open access

The Combination of Objects in Box-Like Containers

Description: For my project, I chose to construct ten containers in which clay and non-traditional drawings were combined. The various materials used were ceramics, drawings on Plexiglas, wood, and other found materials. The questions to be answered by the completion of the ten pieces were the following: 1. What types of containers are most complimentary in combining ceramics and drawings? 2. What types of drawing media are most successful for combining drawings with ceramics? 3. What types of presentatio… more
Date: August 1978
Creator: Ellis, Lou
Partner: UNT Libraries
open access

Combining Clay and Light Into Sculptural Forms

Description: This problem concerns the feasibility of combining the elements of light and clay in a sculptural concept of design. The study has determined various procedures of combining the sculptural ceramic forms for the internal inplant of light sources. Specific questions posed were 1. Can the surface decoration be enhanced by external and internal lighting? 2. How does each surface quality, raku, and low-fire salt glaze differ with the interplay of light? 3. In what way may two surface qualities be ap… more
Date: August 1978
Creator: Munoz, Gilberto, Jr.
Partner: UNT Libraries
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