You limited your search to:

  Partner: UNT Libraries
 Collection: UNT Theses and Dissertations
Results 5921 - 5930 of 16,649
  |   |  
A Study of the Perceptions of the Role of Presidents in Teachers Colleges in Northeastern Thailand

A Study of the Perceptions of the Role of Presidents in Teachers Colleges in Northeastern Thailand

Date: May 1986
Creator: Nipawan Teepanont
Description: The purpose for choosing this study was to compare the perceptions of the role of presidents in teachers colleges in Northeastern Thailand. The study groups included the presidents, the administrative staff, and the teaching faculty within these colleges.
Contributing Partner: UNT Libraries
Chromatographic and Spectroscopic Studies on Aquatic Fulvic Acid

Chromatographic and Spectroscopic Studies on Aquatic Fulvic Acid

Date: August 1986
Creator: Chang, David Juan-Yuan
Description: High Performance Liquid Chromatography (HPLC) was used to investigate the utility of this technique for the analytical and preparative separation of components of aquatic fulvic acids (FA). Three modes of HPLC namely adsorption, anion exchange and reversed phase were evaluated. Aquatic fulvic acids were either extracted from surface water and sediment samples collected from the Southwest of the U.S., or were provided in a high purity form from the USGS. On the adsorption mode, a major fraction of aquatic fulvic acid was isolated on a semipreparative scale and subjected to Carbon-13 NMR and FAB Mass Spectroscopy. Results indicated that (1) The analyzed fraction of fulvic acid contains more aliphatic than aromatic moieties; (2) Methoxy, carboxylic acids, and esters are well-defined moieties of the macromolecule; (3) Phenolic components of the macromolecules were not detected in the Carbon-13 NMR spectrum possibly because of the presence of stable free radicals. Results of the anion exchange mode have shown that at least three types of acidic functionalities in aquatic fulvic acid can be separated. Results also indicated that aquatic fulvic acid can be progressively fractionated by using subsequent modes of HPLC. Results of reversed phase mode have shown that (1) The fractionation of aquatic ...
Contributing Partner: UNT Libraries
A Study of the Perception of Faculty Concerning Integration of Faith and Learning at Free Methodist Colleges

A Study of the Perception of Faculty Concerning Integration of Faith and Learning at Free Methodist Colleges

Date: May 1986
Creator: Mannoia, Kevin W.
Description: The problem with which this study is concerned is the perception of faculty members at Free Methodist colleges regarding the integration of faith and learning in the total environment of their institution. In order to study this problem, the entire population of faculty was studied at Greenville College, Greenville, IL.; Roberts Wesleyan College, Rochester, N.Y.; Seattle Pacific University, Seattle, WA.; and Spring Arbor College, Spring Arbor, MI. The purposes of this study are fourfold: (1) to identify and to validate statements which describe individual criteria which must exist if integration of faith and learning is occurring on Christian college campuses; (2) to use these criterion statements in evaluating the perception of faculty at Free Methodist colleges concerning integration of faith and learning at their institutions; (3) to study the effect of age on the perception of integration of faith and learning among faculty; (4) to study the effect of the undergraduate alma mater on the perception of integration of faith and learning among faculty. An instrument containing forty-seven statements of criteria for integration of faith and learning was developed for this study and given to the faculty at the four institutions. Content validity was established by using nine experts in ...
Contributing Partner: UNT Libraries
Methods Development for Ion Chromatography

Methods Development for Ion Chromatography

Date: May 1986
Creator: Supachai Maketon
Description: Ion chromatography (IC) as developed by Small et. al. in 1975 has become an efficient and reliable analytical technique for simultaneous analysis of multiple ions in solution. The principle requirement prior to use the IC for an analysis is sample preparation; these include sample decomposition, solvent extraction, and trapping in case the target element is in the gas phase, etc. Solvent extractions for fluoride, chloride, sodium, ammonium, and potassium ions which are soluble in soils are described. Sample decompositions include silicate rocks using hydrofluoric acid for the determination of phosphorus; organic pesticides using lithium fusion technique for the determination of halide and cyanide ions are also described. After these sample preparation techniques, the aqueous solutions obtained were analyzed on the ion chromatograph for the analyses of the anions and cations mentioned above. Recovery and reproducibility of each technique is in general quite good and the comparison between the results obtained from the IC method and other instrumentation are given.
Contributing Partner: UNT Libraries
Communication Quality in Information Systems Development: The Effect of Computer-Mediated Communication on Task-Oriented Problem Solving

Communication Quality in Information Systems Development: The Effect of Computer-Mediated Communication on Task-Oriented Problem Solving

Date: May 1986
Creator: Smith, Jill Yvonne
Description: The problem motivating this research is that ineffective communication may hamper systems development efforts. Specifically germane to this study are development efforts characterized as task-oriented, and which require information-sharing and problem-solving activities. This research problem motivated an analysis of the communication process and lead to the development of a temporal framework that delineates variables associated with task-oriented, end user/systems analyst communication interactions. Several variables within this framework are depicted in two theoretical models. The first model shows the theoretical relationship between an independent variable, communication mode (represented by asynchronous computer conferencing and face-to-face conferencing), and five dependent variables: (1) the amount of information shared, (2) the significance of the information shared, (3) the comprehensiveness of the information shared, (4) the perception of progress toward the goal, and (5) the perception of freedom to participate. The second model depicts the assumed interaction between communication mode, the five variables cited above (now acting as independent variables), and a dependent variable, communication quality. There are two theoretical components of communication quality: (1) deviation from an optimal set of user requirements, and (2) the degree of convergence (unity based on mutual understanding and mutual agreement) emanating from a communication interaction. Using the theoretical models ...
Contributing Partner: UNT Libraries
Job Satisfaction of Secondary School Principals in the Rivers State of Nigeria

Job Satisfaction of Secondary School Principals in the Rivers State of Nigeria

Date: May 1986
Creator: Maduagwu, Samuel Nwankwo
Description: This study addresses these questions: (1) What is the relationship between secondary school principals' job satisfaction and their ages, educational level, salary, and years of experience on the job, size of school, and location of school? and (2) What is the relationship between two instruments that measure job satisfaction--The Job Descriptive Index (JDI) and The Job in General (JIG).
Contributing Partner: UNT Libraries
Carbon K-Shell X-Ray and Auger-Electron Cross Sections and Fluorescence Yields for Selected Molecular Gases by 0.6 To 2 .0 MeV Proton Impact

Carbon K-Shell X-Ray and Auger-Electron Cross Sections and Fluorescence Yields for Selected Molecular Gases by 0.6 To 2 .0 MeV Proton Impact

Date: August 1986
Creator: Bhalla, Raj P. (Raj Pal), 1948
Description: Absolute K-shell x-ray cross sections and Auger-electron cross sections are measured for carbon for 0.6 to 2.0 MeV proton incident on CH₄, n-C₄H₁₀ (n-Butane), i-C₄H₁₀ (isobutane), C₆H₆ (Benzene), C₂H₂ (Acetylene), CO and CO₂. Carbon K-shell fluorescence yields are calculated from the measurements of x-ray and Auger-electron cross sections. X-ray cross sections are measured using a variable geometry end window proportional counter. An alternate method is described for the measurement of the transmission of the proportional counter window. Auger electrons are detected by using a constant transmission energy Π/4 parallel pi ate electrostatic analyzer. Absolute carbon K-shell x-ray cross sections for CH₄ are compared to the known results of Khan et al. (1965). Auger-electron cross sections for proton impact on CH₄ are compared to the known experimental values of RΦdbro et al. (1979), and to the theoretical predictions of the first Born and ECPSSR. The data is in good agreement with both the first Born and ECPSSR, and within our experimental uncertainties with the measurements of RΦdbro et al. The x-ray cross sections, Auger-electron cross sections and fluorescence yields are plotted as a function of the Pauling charge, and show significant variations. These changes in the x-ray cross sections are compared ...
Contributing Partner: UNT Libraries
A Study of the Job Satisfaction of Female Principals and Vice-Principals in Texas Public Schools

A Study of the Job Satisfaction of Female Principals and Vice-Principals in Texas Public Schools

Date: August 1986
Creator: Bertl, Mary F.
Description: This study is designed to determine the degree to which female principals and vice-principals in Texas derive job satisfaction from their work and to identify those factors, both negative and positive, which affect the job satisfaction of these principals and vice-principals. A single questionnaire was used to collect the data for this study. Usable questionnaires were returned by 331 vice-principals and 504 principals. These represented 336 school districts throughout the state. Respondents were compared as to their view of their overall job satisfaction, the importance assigned to intrinsic and extrinsic job facets, their satisfaction with intrinsic and extrinsic job facets, and the differences in facet satisfaction connected with various personal characteristics.
Contributing Partner: UNT Libraries
Inferential Set Adoption by Nursing Students

Inferential Set Adoption by Nursing Students

Date: August 1986
Creator: Garza, Christine Seftchick
Description: This study examines nursing students' adoption of inferential sets in a clinical situation. The investigation determines (1) the particular inferential set(s) nursing students adopt toward a patient in a clinical situation; (2) the particular inferential set(s) adopted by sophomore and senior nursing students in a clinical situation; and (3) whether or not inferential sets adopted by the sophomore and senior nursing students differ. Sophomore and senior nursing students at a woman's university in Texas were asked to complete a research tool designed to determine inferential set adoption.
Contributing Partner: UNT Libraries
Electron-Ion Time-of-Flight Coincidence Measurements of K-K Electron Capture, Cross Sections for Nitrogen, Methane, Ethylene, Ethane, Carbon Dioxide and Argon (L-K) Targets

Electron-Ion Time-of-Flight Coincidence Measurements of K-K Electron Capture, Cross Sections for Nitrogen, Methane, Ethylene, Ethane, Carbon Dioxide and Argon (L-K) Targets

Date: May 1986
Creator: Toten, Arvel D.
Description: Protons with energies ranging from 0.4 to 2.0 MeV were used to measure K-shell vacancy production cross sections (oVK) for N_2, CH_4, C_2H_4, C_2H_6, and CO_2 gas targets under single collision conditions. An electron-ion time-of-flight coincidence technique was used to determind the ration of the K-K electron capture cross section, OECK, to the K-vacancy production cross section, oVK. These ratios were then combined with the measured values of oVK to extract the K-K electron capture cross sections. Measurements were also made for protons of the same energy range but with regard to L-shell vacancy production and L-K electron capture for Ar targets. In addition, K-K electron capture cross sections were measured for 1.0 to 2.0 Mev 42He^_ ions on CH_4.
Contributing Partner: UNT Libraries