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Southwest Retort, Volume 39, Number 9, December 1986
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
December 1986
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Southwest Retort, Volume 40, Number 9, December 1987
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
December 1987
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Empirical Research of Decision-making Effectiveness When Using Differing Presentation Formats Under Varying Decision Tasks
The purpose of this research was to determine if presentation format, given a particular task to be performed, would affect the decision-making process of financial decision makers. The problem motivating this study is the potential for managers to make inefficient decisions when they use reports which are presented inappropriately for a given task.
Date:
December 1988
Creator:
Hard, Nancy J. (Nancy Jean)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Development of a Physical Science Curriculum for Interactive Videodisc Delivery: A Case Study
Using a case study approach, this investigation focused on the deliberations and decision-making processes involved in the development of a physical science curriculum to be delivered by interactive videodiscs. The mediating factors that influenced the developmental processes included the participants and their perceptions, their decisions and factors influencing their decisions. The Curriculum and Instruction Advisory Committee of the Texas Learning Technology Group was selected as the subject of this study which used qualitative data collection methods. Data collection included participant observation of curriculum meetings followed by structured interviews of the participants. Document analyses were triangulated with the observations and interviews to ascertain influences on decision-making processes. Developmental processes indicated the emergence of staff and committee procedures. Procedures were influenced by school district and personal philosophies, teacher and student needs, and constraining factors such as state Developmental processes indicated the emergence of staff and committee procedures. Procedures were influenced by school district and personal philosophies, teacher and student needs, and constraining factors such as state mandates. Other influencing factors included research, tradition, and politics. Core curriculum was to be delivered by interactive videodiscs and include remediation and enrichment loops along with laboratory simulations. Participants stressed that students perform traditional laboratory experiments …
Date:
December 1986
Creator:
Williams, Vanyelle Coughran
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Stress as a Factor in Primary Schoolchildren's Reading Difficulties: Some Implications for Remedial Reading
Stress is being linked increasingly to physiological, psychological, sociological, and educational problems. However, scant attention has been given to stress in recent reading research. This study investigated referral and evaluation statements and diagnostic data from parents, teachers, reading specialists, and counselors regarding signs of stress and potential stressors as factors in the reading difficulties of seventy-seven primary schoolchildren referred for evaluation at the pupil Appraisal Center (PAC) at North Texas State University between 1977 and 1984. Qualitative methods, specifically situational analysis, were employed to obtain a holistic view of each subject's reading difficulties. The researcher collected data from documented files at PAC. Data analysis via a categorical coding system produced thirty-nine stress related categories, organized under broad headings of family and school environment, readiness for reading/ learning, general stress reactions, and responses to stress when reading/learning becomes a problem.
Date:
December 1985
Creator:
Swain, Claudia Jones
Object Type:
Thesis or Dissertation
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-
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Empirical Examination of Classified Staff Participation in Decision-Making with Regard to Policy Determination, Administrative Practices and Influence on Working Conditions in Nigerian Universities
The primary purposes of this study were (1) to investigate the current and preferred extent of non-supervisory classified staff employees' participation in university decision-making in Nigeria, as viewed by Nigerian higher level university administrators; (2) to investigate their current level of satisfaction with participation, and (3) to investigate the future trend of their participation in university decision-making. A three-part questionnaire developed by Allen L. Christian at North Texas State University in 1980 was slightly modified and used in this study. The respondents were 19 higher level university administrators at six Nigerian universities. The data were analyzed using frequency, t-test for related samples, one-way analysis of variance and the Scheffe' procedure used to test all possible comparisons among the means of the independent variables.
Date:
December 1983
Creator:
Nwaeke, Lawrence Iheanyichukwu
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Effect of Using Class Discussion as a Pre-Writing Activity in Teaching Composition to ESL Students
This study examines the effect of class discussion as a pre-writing activity on actual writing performance. The experiment was conducted with all the Level 3 and Level 4 students enrolled in the Intensive English Language Institute of North Texas State University in the Spring, 1986 semester. Cochrans C test was performed to test significant differences between groups at the beginning of this test. Multivariate analysis of variance tests were used to determine the treatment effect between and within groups, and a matched t-test was also utilized to analyze the difference within tests. Pearson product moment correlation coefficient was calculated to determine the relationship between the discussion activity score and the actual writing score. Analysis of covariance tests were used to determine which variance of discussion activities had greater effect on the actual writing score.
Date:
December 1986
Creator:
Bang, Hwa-Ja Park
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
An Exploratory Study of the Relationship Between Curiosity and Print Awareness of Four-Year-Old Children
This study has five chapters, organized in the following manner: (1) Chapter I contains the introduction, statement of the problem, purpose of the study, questions, significance of the study, and definition of terms; (2) Chapter II is a review of the literature; (3) Chapter III is a description of subjects and tests and procedures for treating the data; (4) Chapter IV contains the statistical technique of the analysis and the findings related to the questions, and (5) Chapter V consists of the summary, findings, conclusions, and recommendations. The problem of the study was to explore the relationship between curiosity and print awareness among four-year-old children. Subjects participating in the study were 71 four-year-old children from six licensed child care and preschool settings located in different geographical sections of a north central Texas city. The study included thirty-four girls and thirty-seven boys. Instruments used to collect the data were Kreitler, Zigler, and Kreitler's battery of curiosity tasks and Goodman's Signs of the Environment and Book Handling Knowledge tasks. Canonical I correlation analyses do not yield a significant relationship between variables of curiosity and print awareness. An alternate Pearson Product Moment correlation yielded some specific pairwise correlations between certain curiosity variables and …
Date:
December 1988
Creator:
Estrada, Anita
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Wang Institute of Graduate Studies: A Historical Perspective
The Wang Institute of Graduate Studies was an independent, non-profit corporate college located Tyngsboro, Massachusetts originated through the benevolence of An Wang. This study focuses on the problems in education and industry that acted as the impetus for this institute and develops a historical perspective of Wang Institute from its inception in 1979 until its end in August, 1987. The study describes the philosophy, organizational structure, curriculum, faculty, and students of Wang Institute. Wang Institute of Graduate Studies no longer exists. The facility used by Wang Institute of Graduate Studies is now known as Wang Institute of Boston University.
Date:
December 1987
Creator:
Green, Patricia Ann Naizer
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Demographic and Social Psychological Factors Affecting Migration in Eight United States Cities
In this investigation, selected demographic and social psychological factors affecting migration within eight United States cities are examined. More specifically, the study examines migration in terms of previous neighborhood satisfaction, perceived initial attraction of present neighborhood, present neighborhood satisfaction, family life cycle, residence tenure, race, sex, income, and education. The data for this investigation are taken from the 1975 National Crime Survey Attitude Sub-Sample Files. Using length of residence to define migration status, 2,047 migrants and 1,928 non-migrants comprise the sample for this investigation. Zero-order and multiple correlation measures are utilized in the analysis of migration in terms of the previously mentioned variables.
Date:
December 1982
Creator:
Landua, Paul Dwight
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Role of Higher Education in Africa: a Study of the Attitude of African Educators Toward the Tananarive Recommendations
This study concerns the perceptions of African educators concerning the role of higher education in Africa. The study investigates African educators' awareness, understanding, opinions, and reactions to the role of higher education as defined by the Tananarive Conference on the development of higher education in Africa. The data were collected through personal interviews with 80 educators affiliated with the universities of the English—speaking countries in Middle Africa. The findings of the study reveal that (a) the Tananarive recommendations are still realistic and relevant to the African situation; (b) African educators agree that universities in Africa must contribute to the definition and development of African economic, social, and cultural goals; (c) African universities are judged mainly by how successfully their objectives and achievements improve society; (d) the critical problems confronting the African universities are finance, colonial origin, attachment to metropolitan models and standards, training of staff in overseas institutions, brain drain, and government interference; and (e) mutual trust and understanding of role-expectation between African governments and universities is required for universities to fulfill their developmental role in African societies.
Date:
December 1989
Creator:
Laryea, Evans A.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Effects of Water Quality, Instream Toxicity, and Habitat Variability on Fish Assemblages in the Trinity River, Texas
The Trinity River flows through the Dallas-Ft. Worth Metroplex in north central Texas where it receives effluents from numerous point sources including seven large regional wastewater treatment facilities. Historically, the Trinity River has been impacted by massive wastewater loadings which often constitute > 80% of the total river discharge during low flow periods. Normally, high mass loadings correspond to the summer months, compounding the effects of a naturally stressful period, characterized by high temperatures and low dissolved oxygen concentrations. Samples from 12 stations were collected quarterly over an 18 month period from the Trinity River and two tributaries. Water samples were analyzed for a variety of water quality variables, including metals, priority pollutants, pesticides, and general water quality parameters. Water samples were also tested for acute and subchronic effects with several test species. Fish were collected at each station and assemblages were characterized using traditional classification techniques and the Index of Biotic Integrity. In addition, sediment samples were assessed for toxic effects which could have adversely impacted fish recruitment and in situ biomonitoring experiments were performed. Quantitative habitat characterization analyses were performed to gain additional information that could possibly explains differences in fish assemblage structure related to habitat variability. Data …
Date:
December 1989
Creator:
Arnold, Winfred R., 1960-
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Reduction Pathways in Cyclopentadienyl Rhenium Dicarbonyl Dibromide Deriviatives and Indenyl Rhenium Tricarbonyl: Synthesis, Structure, and Reactivity of Anionic Cyclopentadienyl Rhenium Complexes. Ring Attack vs. Metal-Halogen Exchange
The reactions of diagonal and lateral Cp'Re(CO)2Br2 (where Cp' = n5-C5H5, n5-C5Me5) and (n5-CgH7)Re(CO)3 with reducing agents have been examined. Hydride reduction at -78 °C is observed to occur at the Cp ring in both CpRe(CO)2Br2 isomers, affording a thermally unstable [(n4 -C5Hg)Re(CO)2Br2]- complex. The product of hydride ring attack has been characterized by low-temperature IR and 1H NMR measurements in addition to 13C NOE and heteronuclear 2D NMR measurements. Reaction of lateral CpRe(CO)2Br2 with either MeLi or PhLi affords both Cp-ring attack and metalhalogen exchange, [CpRe(CO)2Br]- (1) while t-BuLi reacts exclusively via metal-halogen exchange. diag-CpRe(CO)2Br2 reacts with the above lithium reagents to yield the same metal-halogen exchange anion. Analogous reactions using diag- and lat-Cp*Re(CO)2Br2 (where Cp* = n5-CgMe5) afford only the corresponding rhenium metal-halogen exchange anion, [Cp*Re(CO)2Br] (2). The molecular structures of 1-[Li/15-Crown-5] and 2-PPP were established by X-ray crystallography. 1-[Li/15-Crown-5] crystallizes in the monoclinic space group P21 with a = 10.860(4) A, b = 13.116(5) A, c = 7.417(3) A, B = 105.26(3)0, V = 1018.7(3) A3 , and Z = 2. 2-PPP crystallizes in the orthorhombic space group Pbca with a = 20.646(5) A, b = 17.690(5) A, c = 17.553(3) A, and z = 8. Solution …
Date:
December 1989
Creator:
Lee, Sang Woo, 1952-
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
New Descriptions, Intraspecific Variation and Systematic Importance of Drumming Behavior in Selected North American Plecoptera
Drumming behavior is described for the first time in 33 North American Plecoptera species, and signals of an additional five species, Pteronarcys pictetii, Acroneuria abnormis, Paragnetina media, Clioperla clio and Isogenoides zionensis, are further detailed. An out-group comparison of behavioral characters in all 104 world species whose drumming is known showed that the behavior is more advanced in the Arctoperlaria Group Systellognatha than in the Group Euholognatha. In general, tapping, monophasy, touching, sequenced exchange and less than 50 taps/answer are ancestral states, and rubbing, grouping, phasing, tremulation, interspersed exchange and equal or more than 50 taps/answer are derived states. There has been some co-evolution between abdominal structure and drumming behavior. Scanning Electron Micrographs of 30 species showed that the primitive state of tapping is ascociated with three classes of abdominal structure: (1) absence of derived structures, (2) lobes or vesicles, and (3) hammers. The derived behavior of rubbing, however, occurs only in species with derived structures, and is predominant in species having vesicles and hammers. Drumming can be used as a line of evidence to aid in defining genera and species, since the behavior has a variable degree of specificity or exclusiveness in all species, particularly in groups of species …
Date:
December 1986
Creator:
Maketon, Monchan
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Monte Carlo Study of the Robustness and Power of Analysis of Covariance Using Rank Transformation to Violation of Normality with Restricted Score Ranges for Selected Group Sizes
The study seeks to determine the robustness and power of parametric analysis of covariance and analysis of covariance using rank transformation to violation of the assumption of normality. The study employs a Monte Carlo simulation procedure with varying conditions of population distribution, group size, equality of group size, scale length, regression slope, and Y-intercept. The procedure was performed on raw data and ranked data with untied ranks and tied ranks.
Date:
December 1984
Creator:
Wongla, Ruangdet
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
An Investigation of the Needs for Music-Related Content in the Bible College Pastoral Curriculum as Perceived by a Selected Group of Pastors
The purpose of the study was to investigate the needs for music-related content in the Bible college pastoral curriculum as perceived by a selected group of pastors. The research problems were (1) to assess the extent of musical preparation of recent pastoral graduates from selected accredited Bible colleges in the United States, (2) to assess the music-related duties of those graduates in paid pastoral positions, (3) to assess the pastors' perceived needs for instructional preparation for the fulfillment of their musical duties, and (4) to determine the effect of selected factors on the perceived needs of those pastors.
Date:
December 1987
Creator:
Hui, Andrew
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Relationship of Student Mathematics Scores on the Scholastic Aptitude Test to Teacher Effectiveness as Measured by the Texas Teacher Appraisal System
The purposes of this study were (1) to determine the scores on the quantitative portion of the SAT for 110 students and these students' math teachers' ratings on the TTAS, (2) to determine the nature of the relationship of the students' SAT scores to their teachers' TTAS ratings, and (3) to determine the nature of the relationship of the students' SAT scores to their sex. It was hypothesized that (1) there would be no significant relationship between a student's math score as measured by the quantitative portion of the SAT and the effectiveness of the student's math teacher as measured by the TTAS, and (2) there would be no significant relationship between a student's math score as measured by the quantitative portion of the SAT and the student's sex. The 110 subjects (60 males and 50 females) In this study took the quantitative portion of the SAT during the 1986-87 school year. This sample was drawn from a large suburban high school in the North Texas area. The effectiveness of the math teachers who taught the 110 students was measured by the Texas Teachers Appraisal System (TTAS). The statistical analyses indicated that (1) there was no significant relationship between a …
Date:
December 1988
Creator:
Clingman, Elizabeth Ann
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Effects of the Type A Behavior Pattern and Aerobic Exercise on the Allocation of Attention
This investigation examined the effects of aerobic fitness and the Type A behavior pattern on cognitive functioning in the split-attention (dual task) paradigm. Sixty-four adults were classified as Type A or B by means of the Jenkins Activity Survey, and as Runner or Sedentary using self-reports of physical activity. Under challenging instructions, subjects performed a primary task (Raven Advanced Progressive Matrices) and secondary task (Backward Digit Span) alternatively under single and dual task conditions. There was a significant interaction between aerobic fitness and task condition such that Runners outperformed Sedentary subjects under dual, but not single, task conditions on the secondary task. No differences were found on the primary task. Backward Digit Span performance under dual, but not single, task conditions, was also found to be positively related to the subjects eating a low cholesterol diet and maintaining a healthy weight. Contrary to predictions, there were no significant effects of the Type A behavior pattern, either main or interaction, on any of the cognitive measures. Type A Runners exceeded Type B Runners in aerobic points, races per year, runs per week, Personal Record attempts, and level of dissatisfaction with performance. There were no differences in the tendency to run while …
Date:
December 1986
Creator:
Morton, Anne Aldredge
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Perceptions of Junior High School Principals, Their Spouses and Their Building Counselors Regarding Occupational Sources of Stress for the Principals
The purpose of this study was to identify the perceptions held by junior high school principals, their spouses, and school counselors regarding occupational stressors of the junior high school principals in the State of Texas. The occupational stressors center around five areas of concern: (1) administrative constraints, (2) administrative responsibilities, (3) interpersonal relations, (4) intrapersonal conflicts, and (5) role expectations. A randomly selected sample of 300 junior high school principals were sent questionnaires for themselves, their spouses, and their school counselors. Descriptive statistical methods were employed to calculate means and standard deviations of the principals', spouses', and counselors' perceptions of the occupational stressors of the principals. T-test and one-way analysis of variance were used to analyze the data.
Date:
December 1984
Creator:
Shouse, Douglas
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Impact of Strategic Management on Organizational Effectiveness in Jesuit Colleges and Universities
The organizational effectiveness and strategic management areas of organizational theory are the general focus of this study. Organizational effectiveness is defined as the extent to which an organization by the use of certain resources fulfills its objectives without depleting its resources and without placing undue strain upon its members and/or society. Strategic management is defined as an array of processes which leads to the development of an effective approach to achieve the organization's objectives. Little agreement appears to exist on how to evaluate organizational effectiveness and to what extent strategic management impacts organizational effectiveness. This is the problem this study addressed. This study presents an extensive review of the literature, formulates some syntheses and utilizes a questionnaire to gather pertinent data. The sample of respondents consisted of a group of key administrators from all the Jesuit colleges and universities in the United States. The questionnaire had a ninety percent response rate. This study was primarily a correlation study which emphasized the perceptions of the respondents regarding the elements and/or processes of strategic management and the concepts of organizational effectiveness. The Chi-Square and Spearman rank order tests were utilized for statistical measures. The analysis of data revealed any significant relationships between …
Date:
December 1985
Creator:
Favilla, Edward S.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Fitness-Related Alterations in Blood Pressure Control: The Role of the Autonomic Nervous System
Baroreflex function and cardiovascular responses to lower body negative pressure during selective autonomic blockade were evaluated in endurance exercise trained (ET) and untrained (UT) men. Baroreflex function was evaluated using a progressive intravenous infusion of phenylephrine HCL (PE) to a maximum of 0.12 mg/min. Heart rate, arterial blood pressure, cardiac output and forearm blood flow were measured at each infusion rate of PE. The reduction in forearm blood flow and concomitant rise in forearm vascular resistance was the same for each subject group. However, the heart rate decreases per unit increase of systolic or mean blood pressure were significantly (P<.05) less in the ET subjects (0.91 ± 0.30 versus 1.62 ± 0.28 for UT). During progressive lower body negative pressure with no drug intervention, the ET subjects had a significantly (P<.05) greater fall in systolic blood pressure (33.8 ± 4.8 torr versus 16.7 ± 3.9 torr). However, the change in forearm blood flow or resistance was not significantly different between groups. Blockade of parasympathetic receptors with atropine (0.04 mg/kg) eliminated the differences in response to lower body negative pressure. Blockade of cardiac sympathetic receptors with metoprolol (0.02 mg/kg) did not affect the differences observed during the control test. It was …
Date:
December 1986
Creator:
Smith, Michael Lamar, 1957-
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Academic Governance: Perceptions and Preferences of Administrators and Faculty in a Public and in a Private University
The problem with which this study is concerned is the determination of the attitudes toward academic governance of administrators and faculty in both a public and a private institution of higher education in Texas. Based on the problem, a Likert-type survey instrument was developed from the questionnaire provided by the North Texas State University Task Force on University Governance; 176 academic administrators and faculty responded (60.5 per cent).
Date:
December 1982
Creator:
Igbineweka, Andrew O.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Study of the Factors Related to Planned and Actual Manufacturing Lead Time in Two Environments: (1) High-Volume Continuous-Production and (2) Job-Shop Production-to-Order
This study focused upon the manufacturing lead time management in California's electrical and electronic machinery, equipment, and supplies industry. Manufacturing firms with one hundred or more employees were invited to participate in the research. Six subproblems relating to manufacturing lead time were selected and six appropriate null hypotheses were tested. The subproblems identified (1) factors influencing manufacturing lead time, (2) production planning processes influencing manufacturing lead time accuracy, and (3) techniques reducing manufacturing lead time. These factors, production planning processes, and techniques were then IV investigated to determine the importance of each of them in two environments: (1) high-volume continuous-production (HVCP) and (2) job-shop production-to-order (JSPTO).
Date:
December 1980
Creator:
Moshtaghi Moghaddam, Jahanguir
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library