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Aquatic Vegetation Nutrient Budgets and Sedimentation in a Southwestern Reservoir
During four growing seasons, aquatic vascular plant production and distribution were studied in Pat Mayse Lake, Texas, a 2425 hectare oligo-mesotrophic reservoir. The dominant macrophyte population was Myriophyllum spicatum L. Growth rates and regrowth rates of mechanically harvested Myriophyllum beds were found to be dissimilar. Based on estimates of watermilfoil nutrient content, there were insufficient nutrients in the entire population to alter the trophic status of this reservoir should all of the nutrients be instantaneously released. Sediments were the primary nutrient (nitrogen and phosphorus) sink. Bank erosion and solids transport from the watershed appear to contribute most of the sediments and a lake-wide mean sedimentation rate of 2.5 cm/year was estimated from sediment trap and core sample data.
Date:
May 1986
Creator:
Clifford, Philip A. (Philip Alan)
System:
The UNT Digital Library
Effects of Channel Condition on Information Recall
The problem of this experimental study is to determine to what extent visual information may dominate over audio information. Additionally, the experimental design addresses problems with previous research in this area and emphasizes simplified approaches to the study of channel condition effects. The study does not include investigations of learning theory or short-term memory, but processes of listening and long-term memory are incorporated into the design. A stimulus of sound effects and slides was utilized in one audio and two audio-visual channel conditions, and results showed a high recall among all subjects in all three conditions. The study concludes that channel condition has little effect at low levels of information.
Date:
August 1986
Creator:
Cook, Jay Scott
System:
The UNT Digital Library
Creating Eternity: The Coesistence of Time in One Hundred Years of Solitude
The purpose of this thesis is to examine the coexistence of time in Gabriel Garcfa Marquez's One Hundred Years of Solitude as a cause of the supernatural events, the hereditary memory, and the solitude and to examine the effects of this mythical time frame on character development, plot, narrative structure, and theme. The thesis is divided into five chapters. The first chapter introduces the parchments as creators of mythical time. The second, third, and fourth chapters investigate the effects of this unconventional time. Supernatural events, clairvoyance, and solitude are all examined as effects. The final chapter correlates the writing of the parchments with the writing of the novel and explains the effects of unconventional time on the reader. Thus, this thesis illustrates how the coexistence of time functions of two levels: the level of the parchments and the level of the novel.
Date:
December 1986
Creator:
Cook, Kelli Cargile
System:
The UNT Digital Library
An Examination of the Relationship Between Holland's Vocational Scales and a Measure of Interpersonal Needs
Previous research has provided evidence of relationships between vocational interests and other psychological variables. Test scores from the VPI and FIRO-B for 699 white male job applicants were subjected to multiple regression analyses to determine if individual interest scales could be predicted by particular configurations of interpersonal need scales. It was hypothesized that Enterprising, Realistic, and Investigative interests would be predicted by Inclusion and Control needs and Social interests by Inclusion, Control, and Affection needs. To control for effects of sample size, a smaller sample (n = 125) was randomly drawn from the original data and subjected to identical analyses. Results indicated only partial support for some hypotheses and revealed little common variance between the two domains.
Date:
August 1986
Creator:
Crumpton, Gerald W. (Gerald Wayne)
System:
The UNT Digital Library
Hannah Arendt: The Philosopher in History
This paper explores the major historical interpretations of Hannah Arendt and analyzes her philosophy of history. Chapter One includes an introduction and a brief survey of the life of Hannah Arendt. Chapters Two and Three examine The Origins of Totalitarianism. The discussion concludes that Arendt's loose use of terms and some of her evidence can be called into question. Nevertheless, her work contains original insights about modern European political history. Chapter Four, a discussion of Arendt's Eichmann in Jerusalem: A Report on the Banality of Evil, emphasizes her portrait of Adolph Eichmann as a shallow, Nazi bureaucrat. Although the work is flawed with inaccuracies, her portrait of Eichmann as a prototypical bureaucratic killer is thought provoking. Chapter Five, an analysis of Arendt's philosophy of history, concludes that Arendt understood the pitfalls of theories of historical causality.
Date:
December 1986
Creator:
Cruz, Richard A. (Richard Alan)
System:
The UNT Digital Library
An Investigation of Textural Activity and Its Hierarchical Structures in Selected Works by Krzysztof Penderecki
This study focuses on temporal aspects of the music of Krzysztof Penderecki and deals with these on the level of textural activity. The analyses are based on a referential idea called a "discrete sound event," defined as an occurrence of a sound or collection of sounds which, as a unit, is distinct from the surrounding texture. These sound events are then used to appraise textural activity from layer fluctuation and composite density. The pieces selected for applying these techniques are the Threnody to the Victims of Hiroshima, from 1960, the Fluorescences, from 1961, and the 1965 Capriccio for oboe and strings.
Date:
May 1986
Creator:
Daley, Paul B. (Paul Byron)
System:
The UNT Digital Library
Improving Communicative Competence: Validation of a Social Skills Training Workshop
The effectiveness of a social skills training workshop was assessed by comparing the rated competence of participants in an Interpersonal Skills Training Program (a 2-session, 12-hour workshop) to the rated competence of nonparticipants. This comparison was operationalized through a study design of the pre- and posttesting of 12 experimental and 22 control subjects. The assessment instruments used were Spitzberg's Conversational Skills Rating Scale (CSRS) and Curran's Simulated Social Interaction Test (SSIT). Two rating judges were utilized. Results, although modest, are in the expected direction. Measured competence on the CSRS failed to show significant improvement in the rated competence of the experimental group as compared to the rated competence of the control group. However, the SSIT did reveal significant improvement of the rated skill and anxiety of experimental subjects while the control group showed no significant improvement. In addition to assessing the effectiveness of the workshop, this study sought to find a positive correlation of the CSRS instrument to the SSIT instrument. As expected, the CSRS showed a positive correlation to the SSIT.
Date:
August 1986
Creator:
Dawson, Pamela J. (Pamela Jane)
System:
The UNT Digital Library
Effectiveness of a Transitional First Grade Program
The purpose of this study was to determine the effectiveness of a transitional first grade program. A comparison of reading and math achievement and school attitude was the focus of the study. The study utilized a pretest/posttest design. The group of regular first grade students who qualified for the transitional program but attended regular first grade was the control group. The group of transitional first grade students was the experimental group. The regular first grade students received formal instruction in all academic areas. The experimental group received no formal instruction. All students were pretested and posttested using the Iowa Test of Basic Skills and the Minnesota School Attitude Survey. Testing was administered to small groups of five or less by the researcher. Scoring was done also by the researcher. An analysis of covariance was used to determine if a significant difference existed between the groups. The analysis of covariance did not produce a significant F at the .05 level when applied to the Iowa Test of Basic Skills except for reading for boys in both groups. The numbers in each cell were low and no further comparisons were made. Due to a testing date that was approved late in the …
Date:
December 1986
Creator:
Day, Mary Jo, 1940-
System:
The UNT Digital Library
Psychological Stress: Effect on Humoral Immune Functioning as Measured by Immunoglobulin Levels
The purpose of the present study was to determine if psychological stress, defined as academic examination stress, would systematically produce changes in immune parameters (immunoglobulin concentration) and psychological functioning. It was hypothesized that as examination stress occurred there would be an effect on immunological function consistent with heightened psychological activity/stress. Subjects were 23 master's and doctoral students in psychology who volunteered for the research project. All subjects were administered a series of psychological tests to measure stress, personality factors, emotional states, and anxiety levels. All tests were administered and.blood samples drawn over a period of 15 months across two lowstress and two high-stress periods. Immunological tests included white blood cell (WBC) differential count and radial immunodiffusion (RID) for the determination of concentration of different immunoglobulin classes (IgA, IgG, IgM) in serum. Data were treated to a one-way analysis of variance (ANOVA) with repeated measures, t /test for correlated samples correlational matrix between variables across assessments and discriminant function analysis. Results showed (1) increased immunoglobulin levels during periods of stress; (2) immunoglobulin G most consistently related to stress and probably most indicative of the stressed condition and biological resistance to stress; (3) anxiety related to external events; (4) increase in anxiety …
Date:
December 1986
Creator:
Didriksen, Nancy A. (Nancy Andrews)
System:
The UNT Digital Library
Perceived Attitudes of Vocational Administrators, Vocational Office Education Teachers and Marketing and Distributive Education Teachers Toward Using Microcomputers in Vocational Education Programs
The primary purpose of this study was to determine the perceived attitudes of vocational administrators, vocational office education teachers, and marketing and distributive education teachers toward using microcomputers in vocational education programs. The sample forth is study was randomly selected from all vocational administrators , vocational office education teachers, and marketing and distributive education teachers employed by Texas School Districts. A total of 288 questionnaire were returned from the three vocational education groups. The return was seventy-seven percent. Statistical techniques included descriptive statistics, one-way, and two-way analyses of variance (ANOVA) to describe the responses and to test the seven null hypotheses. The results of the study was reported in two categories: statistical significance of the tested hypotheses, and the educational inferences of the vocational administrators' and vocational teachers' responses to questionnaire items. There were significant differences in the perceived general attitudes of the three groups. There were no significant differences in the perceived general attitudes of the three groups when categorized by levels of age, occupational experience, amount of computer training, and availability of microcomputers. There were no significant differences in hypotheses which tested for differences in the perceived attitudes of the three groups toward utilizing microcomputers for classroom instruction …
Date:
May 1986
Creator:
Djooya, Akbar
System:
The UNT Digital Library
A Neglected Clarinet Concerto by Ludwig August Lebrun: A Performing Edition with Critical Commentary: A Lecture Recital, Together with Three Other Recitals
The present study makes available a modern performing edition of an eighteenth-centyry clarinet concerto. Written by the Mannheim oboist and composer Ludwig August Lebrun, the Concerto in B-flat for solo clarinet and orchestra has existed solely as a set of manuscript parts for over 200 years. The following chapters present biographical information on Ludwig August Lebrun as an oboist and composer of the late eighteenth century, the historical background of Lebrun's Concerto in B-flat. a thematic and harmonic analysis of the concerto's three movements, and a summary of the procedures followed in preparing the present edition of orchestral parts and piano reduction. Contemporaneous sources which provided pertinent performance practice information in the areas of articulation and ornamentation are also discussed. A copy of the piano reduction and orchestral performing parts are included in the appendices.
Date:
August 1986
Creator:
Duhaime, Ricky Edward
System:
The UNT Digital Library
Absorption, Relaxation, and Imagery Instruction Effects on Thermal Imagery Experience and Finger Temperature
A skill instruction technique based on cognitive behavioral principles was applied to thermal imagery to determine if it could enhance either subjective or physiological responsiveness. The effects of imagery instruction were compared with the effects of muscle relaxation on imagery vividness, thermal imagery involvement, and the finger temperature response. The subjects were 39 male and 29 female volunteers from a minimum security federal prison. The personality characteristic of absorption was used as a classification variable to control for individual differences. It was hypothesized that high absorption individuals would reveal higher levels of imagery vividness, involvement, and finger temperature change; that imagery skill instruction and muscle relaxation would be more effective than a control condition; and that the low absorption group would derive the greatest benefit from the imagery task instruction condition. None of the hypotheses was supported. Finger temperature increased over time during the experimental procedure but remained stable during thermal imagery. The results suggest that nonspecific relaxation effects may best account for finger temperature increases during thermal imagery. Results were discussed in relation to cognitive-behavioral theory and the characteristic of absorption.
Date:
December 1986
Creator:
Durrenberger, Robert Earl, 1951-
System:
The UNT Digital Library
Radial Compression High Performance Liquid Chromatography as a Tool for The Measurement of Endogenous Nucleotides in Bacteria
High performance liquid chromatography was used to measure ribonucleoside triphosphates in microbial samples. Anion exchange columns in a radial compression module were used to separate and quantify purine and pyrimidine ribonucleotides. Endogenous ribonucleoside triphosphates were extracted from Escherichia coli and pseudomonas aeruginosa using three different solvents, namely trifluorocetic acid (TFA; 0.5M), trichloroacetic acid (TCA; 6 per cent w/v) and formic acid (1.0M) Extracts were assayed for uridine 5'-triphosphate (ATP), and guanosine 5'-triphosphate (GTP) by using anion exchange radial compression high performance (pressure) liquid chromatography. The three extraction produres were compared for yield of triphosphates. E. coli, the TFA extraction procedure was more sensitive and reliable than TCA and formic acid extraction procedures, but , in P. aeruginosa, the best yields of ATP and GTP were obrained following extraction with TFA. Yields of UTP and CTP increased when extraction was performed in TCA. These data illustrate that different extraction produres produce different measures for different triphosphates, a point often overlooked.
Date:
August 1986
Creator:
Dutta, Probir Kumar
System:
The UNT Digital Library
The Role Expectations of Academic Counselors in Vocational Education as Perceived by Home Economics Cooperative Education Teachers and Academic Counselors in Texas
The purposes of this study were to determine the role expectations of academic counselors in vocational education as perceived by home economics cooperative education teachers and academic counselors, to compare the extent of agreement between these two groups, and to determine if selected demographic variables caused significant differences in perceptions of role expectations. This study surveyed randomly selected counselors and teachers by means of a questionnaire designed to ascertain role perceptions and to collect demographic data. The Likert-type scale instrument consisted of 46 items that were categorized into six areas of counseling tasks. A total of 45 teachers and 158 counselors returned usable questionnaires.
Date:
December 1986
Creator:
Eades, Jerre P. (Jerre Pauline)
System:
The UNT Digital Library
Characterization of the Pigment-Protein Complex in Corynebacterium Poinsettiae
The purpose of this study was to completely characterize the protein moiety in the caroteno complex in C. poinsettae, determine if the distribution and level of protein in the pigment-protein complex in membranes of the wild type and in a colorless mutant could account for the differences in the stability of the membrane, and to determine if this protein is common to other pigmented and non-pigmented organisms. Also, electron microscopy of cell membranes of C. poinsettiae which had been exposed to gold-labelled antibody against the protein moitey of the pigment-protein complex, demonstrating that the protein is randomly distributed in the membranes of both wild type and colorless mutant.
Date:
May 1986
Creator:
Ebadati, Nasrollah D.
System:
The UNT Digital Library
Foreign Exchange Risk Management in U.S. Multinationals Under SFAS no. 52: Change in Management Decision Making in Response to Accounting Policy Change
SFAS No. 52, Foreign Currency Translation, was issued in December, 1981, replacing SFAS No. 8, Accounting For the Translation of Foreign Currency Transactions and Foreign Currency Financial Statements. SFAS No. 52 has shifted the impact of translation gains and losses from the income statement to the balance sheet. It was expected that SFAS No. 52 would eliminate the incentive for multinationals to engage in various hedging activities to reduce the effect of the translation process in reported earnings. It was also expected that multinationals would change their foreign exchange risk management practices. The major purpose of this study was to investigate the effect of SFAS No. 52 on foreign exchange risk management practices of U.S. based multinationals.
Date:
August 1986
Creator:
El-Refadi, Idris Abdulsalam
System:
The UNT Digital Library
An Interpretive and Postulational Model for Perception and Adoption of Innovation
The problem with which this research is dealing is the lack of any explanatory model which explains both the perception and the adoption of new products. One objective of this study is to advance a new conceptual framework concerning both the perception and the adoption of new products. The second objective of this study is to evaluate this new framework theoretically and empirically. Bunge's evaluative criteria are used to evaluate the new model theoretically while Hunter, Schmidt, and Jackson's meta-analysis technique is used to evaluate the model empirically. An extensive review of literature pertaining to the definition of innovation, the adoption process, and innovativeness is included in the second chapter. Chapter three covers research plan and methods. The new model and its assumptions are presented in chapter four. The results of both theoretical and empirical investigations of the new model are reported in chapter five. Finally, chapter six includes a discussion of the main findings and provides some suggestions for future research. An interpretive and postulational model is introduced in this study. The model is built on three main assumptions and contains thirty-one different theoretical constructs. Those constructs are bounded together by forty-six theoretical propositions. Those propositions are the postulates …
Date:
August 1986
Creator:
El-Sayed, Ismail Mohamed
System:
The UNT Digital Library
Copper Matt Finish: A Study of Effects Achieved Through Use of Colorants and Reduction Methods
The unique nature of this process raised major technical questions that I intended to address during this project. The purpose was to obtain a quality surface, considering both visual and textural considerations, while using the copper matt finish.
Date:
August 1986
Creator:
Ellis, Don L.
System:
The UNT Digital Library
An Empirical Examination of the Effects of FASB Statement No. 52 on Security Returns and Reported Earnings of U.S.-Based Multinational Corporations
Prior to the issuance of Financial Accounting Standards Board Statement No. 8 (SFAS No. 8), there was a marked inconsistency in the area of accounting for foreign currency translation. Though designed to make the diverse accounting practices of multinational corporations (MNCs) more compatible, SFAS No. 8 was the subject of a great deal of criticism, eventually leading to the issuance of Financial Accounting Standards Board Statement No. 52 (SFAS No. 52). SFAS No. 52 differs from SFAS No. 8 on objectives and method of translation, and on accounting treatments of translation adjustments. This dissertation provides an empirical examination of the security market reaction to the accounting policy change embodied in SFAS No. 52, and its impact on the volatility of reported earnings of MNCs. The effects of the issuance and early adoption of SFAS No. 52 on security return distributions were determined by both cross-sectional comparisons of cumulative average residuals (CAR) between MNCs and domestic firms and between early and late adopters, and by time-series tests on CAR of MNCs. Two volume analyses were performed to test the effects of SFAS No. 52 on security volume. The first analysis was adjusted to remove the effects of the marketwide factors on …
Date:
December 1986
Creator:
Elsayed-Ahmed, Sameh M. (Sameh Metwally)
System:
The UNT Digital Library
Models of Consultation, Referral Problems and the Perceived Effectiveness of Parent and Teacher Consultation
This study evaluated the school psychologist's perception of effective models of consultation based upon referral problem and parent, teacher, and student response to treatment. Analyses of covariance determined that (a) parents' receptivity and total number of teacher contacts significantly influenced the parents' response to treatment; (b) teacher receptivity and total number of parent contacts significantly affected teachers' response to treatment; (c) students' response to treatment was significantly affected by the model of teacher consultation and the average number of minutes spent with the school psychologists; and (d) students in a Mental Health consultation group responded significantly more favorably than s tudents in Behavioral or Collaborative consultation groups.
Date:
December 1986
Creator:
Epperson, Sidney Reins
System:
The UNT Digital Library
Adaptation of Handel's Castrato Airs for Bass: A Lecture Recital, Together with Three Recitals of Selected Works of J.S. Bach, W. Mozart, M. Ravel, G. Finzi, R. Schumann, A. Caldara, G. Handel, H. Wolf, H. Duparc, C. Ives and S. Barber and an Operatic Role by Verdi
The lecture recital was given on April 18, 1977. The subject was Adaptation of Handel's Castrato Airs for Bass, and it included a discussion of conventions peculiar to Handelian opera seria, concerns regarding adaptation of Handel's castrato airs and a comparison of adaptation practices in eighteenth- and twentieth-century presentations of Handel's operas. Three coloratura castrato airs and two virtuoso bass airs were performed at the conclusion of the lecture. In addition to the lecture recital, one operatic role and three recitals of solo literature for voice, piano and chamber ensemble were publicly performed. These included the role of "Samuele" in A Masked Ball, by Verdi, performed in English on March 19, 1975 with the Opera Theatre of North Texas State University, a program presented on November 24, 1975,of solo literature for voice, piano, and chamber ensemble, including works by J. S. Bach, W. Mozart, M. Ravel and G. Finzi, a program consisting of a set of works by R. Schumann presented on June 27, 1985, and a program presented on October 28, 1985,of solo literature for voice, piano, and chamber ensemble,including works by A. Caldara, G. Handel, H. Wolf, H. Duparc, C. Ives and S. Barber.
Date:
May 1986
Creator:
Fern, Terry L. (Terry Lee)
System:
The UNT Digital Library
Mexican Americans: Systematic Desensitization of Racial Emotional Responses
To determine whether or not systematic desensitization treatment would produce a significant reduction in negative affect evoked by racial discrimination, 60 Mexican-American college students who scored above average on the Terrell Racial Discrimination Index were selected and assigned randomly to one of three treatment conditions: systematic desensitization (DS), therapist contact (TC), and no-treatment control (NTC). Before undergoing treatment, subjects completed the Background Information Questionnaire (BIQ), and three measures of negative affect: the Multiple Affect Adjective Check List (MAACL); the Profile of Mood States (POMS); and the Treatment Rating Scales (TRS). After concluding treatment, subjects completed the three measures of negative affect only. Results were nonsignificant with respect to two of the affect measures—the POMS and the MAACL. However, significant differentia1 treatment effects were observed for the TRS measure. Relative to the TC and NTC conditions, subjects in the DS condition evidenced significantly less anger, depression, and anxiety. No other group differences attained the level of statistical significance (p < .05). Several explanations are offered for the negative findings of the MAACL and POMS. These explanations include the possibility that the measures themselves are insensitive to treatment effects. Nevertheless, due to the significant findings of the TRS, it is concluded that …
Date:
May 1986
Creator:
Fernandez, Peter, 1961-
System:
The UNT Digital Library
Music Theory in Mexico from 1776 To 1866: A Study of Four Treatises by Native Authors
This investigation traces the history and development of music theory in Mexico from the date of the first Mexican treatise available (1776) to the early second half of the nineteenth century (1866). This period of ninety years represents an era of special importance in the development of music theory in Mexico. It was during this time that the old modal system was finally abandoned in favor of the new tonal system and that Mexican authors began to pen music treatises which could be favorably compared with the imported European treatises which were the only authoritative source of instruction for serious musicians in Mexico.
Date:
August 1986
Creator:
Flores, Carlos A. (Carlos Arturo)
System:
The UNT Digital Library
An Analysis of Methods of Promoting Country Music Records in the Atlanta, Georgia Area
This study examined promoting recorded country music from Atlanta, Georgia, and explored why Atlanta is important in this field. It was learned, through interviews, that promoters wanted radio airplay and top trade publication chart ratings. Radio station program directors decided upon playlists from reading trade publications, efforts by record promoters, listener requests and focus groups, and from reported sales. Stores used album and poster displays, charts, and played music for promotion. The business is one of personalities and experience, as much as product promoted. Large conglomerates are fast changing it.
Date:
May 1986
Creator:
Fogel, Betty Cruikshank
System:
The UNT Digital Library