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Adenosine and Down-Regulation of Myocardial Oxygen Demand
This investigation studied the physiological means by which myocardium can survive and function properly when oxygen supply is limited and cannot initially match oxygen demand. The effects of isoproterenol (ISO) stimulations during low coronary perfusion pressure or hypoxemia on myocardial oxygen demand, work, and oxygen utilization efficiency were investigated.
Date:
December 1991
Creator:
Lee, Shang Chiun
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Aminoketene. Cycloaddition of Ketenes and Imines to Yield β- or δ- Lactams
The purpose of this investigation was to provide a systematic study of the cycloaddition pf (N-alkyl-N-phenylamino)- methoxy-and dichloroketenes to various imines and to investigate the stereochemistry of these cycloadditions.
Date:
December 1991
Creator:
Dad, Mohammad M. (Mohammad Mehdj)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Aspects of Universality in Function Iteration
This work deals with some aspects of universal topological and metric dynamic behavior of iterated maps of the interval.
Date:
December 1991
Creator:
Taylor, John (John Allen)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Behavioral characteristics of young children who were prenatally substance exposed
The purpose of this study was to identify behavioral characteristics of young children (ages 3-8) in special education who were prenatally substance exposed in order to compare them to the behaviors of non-substance exposed children in special education.
Date:
December 1991
Creator:
Heflin, Juane
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Case Study of the Effects of an Adlerian Parent Education Program on Parent Attitudes and Child Rearing Techniques
The effects of an Adlerian-based parent education program on parents' attitudes toward their children's behavior and techniques used in child rearing were examined in this study. Parents in one primary elementary school were invited by letter to participate in a parent education program.
Date:
December 1991
Creator:
Urban, Toni Ann
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Cerebral Laterality and Leadership Assessment
The major purpose of this study was to determine whether a relationship exists between cerebral laterality dominance and leadership behavior and traits. An additional purpose was to determine whether a relationship exists between cerebral laterality dominance and gender, ethnicity, and educational position.
Date:
December 1991
Creator:
Horn, Barry L. (Barry Lee)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Cloning, characterization and expression of the xylXYZ region of the Pseudomonas putida TOL plasmid pDK1
In this study a library of EcoRI fragments encompassing the entire TOL region of the Pseudomonas putida TOL plasmid pDK1 was constructed in the Escheria coli cloning vector pBR325.
Date:
December 1991
Creator:
Azadpour, Elahe E.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Comparative Effectiveness of Paired Versus Individual Learning of Cognitive Skills Using Computer-Based Instruction
This study examined the comparative effectiveness of learning of cognitive skills when instruction is presented through computer-based instruction using student-to-computer ratios of one-to-one and two-to-one. Effectiveness was gauged through scores on posttests administered subsequent to completion of each of nine computer-based lessons and on a single composite test score.
Date:
December 1991
Creator:
Seebo, Elane K. (Elane Kelly)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Computer Simulations of Mechanical Behavior of Polymer Liquid Crystals
In this dissertation molecular dynamics simulations of behavior of polymer liquid crystals (PLC's) under tensile deformation have been performed. PLC's composed of random or block copolymers of rigid and flexible segments have been studies. Systems of fully flexible chains have been simulated for comparison. Stress-strain relations and fracture mechanics have been investigated.
Date:
December 1991
Creator:
Blonski, Slawomir
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The concept of vision in American school reform: a study of visions of 21st century schooling
The primary objective of this study was to describe and analyze visions of 21st century education articulated by prominent individuals involved with current school reform and restructuring efforts. A second objective was to describe and analyze those images of the most likely educational scenario in the 21st century and the perceived barriers that would prevent realization of those idealized visions.
Date:
December 1991
Creator:
Holmes, Kathleen Mary
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Cultural mistrust, occupational aspirations and achievement motivation of black students
The purpose of this study were three-fold: First, this study examined occupation prestige ratings of African American adolescents using a modified version of the Hatt-North (1947) Occupation Prestige Scale. A second purpose investigated the effects of cultural mistrust on occupation prestige preferences, as well as aspirations and expectations. Finally, this study examined the effects of cultural mistrust and achievement motivation on the occupational aspirations of Black youth.
Date:
December 1991
Creator:
Cuffee, Deborah Robinson
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Description of the American College Fraternity System at Selective, Private Colleges and Universities in the Northeast as Depicted by the Primary Administrative Contact, 1990-1991
The purpose of the study was to gather sufficient data from a campus questionnaire and subsequent follow-up interview with the primary college administrators within the target population to accurately describe conditions of the fraternity systems on those campuses. The population for this study consisted of selective, small, private colleges and universities in the Northeast and Middle Atlantic region of the country. The target population of twenty-six colleges and universities was identified from the respondents to the campus questionnaire and included schools from the states of Maine, New Hampshire, New York, Massachusetts, Connecticut, and Pennsylvania.
Date:
December 1991
Creator:
Chase, Ted Hunter
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Effect of Time on Computer-Assisted Instruction For At-Risk Students
The problem of this study was to determine if the mathematics achievement of at-risk students using computer-assisted instruction (CAI) differed significantly from other groups of students.
Date:
December 1991
Creator:
Salerno, Christopher A. (Christopher Alfred)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Efficient Parallel Algorithms and Data Structures Related to Trees
The main contribution of this dissertation proposes a new paradigm, called the parentheses matching paradigm. It claims that this paradigm is well suited for designing efficient parallel algorithms for a broad class of nonnumeric problems. To demonstrate its applicability, we present three cost-optimal parallel algorithms for breadth-first traversal of general trees, sorting a special class of integers, and coloring an interval graph with the minimum number of colors.
Date:
December 1991
Creator:
Chen, Calvin Ching-Yuen
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The emergence and development of Browning's auditor
By presenting the auditor as a unifying principle that links Browning's earliest works to his dramatic monologues, this dissertation enhances the importance of the ever-ignored experimental works in developing the dramatic monologue technique. An exploration of the emergence and development of the auditor has an additional, but never ancillary, effect of proclaiming the originality and inventiveness of Browning's dramatic technique.
Date:
December 1991
Creator:
Cho-Tak, Byong Eun
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
An Empirical Investigation of Common Characteristics of Commercial Banks Using Standby Letters of Credit, Letters of Credit, Interest Rate Swaps, and Loan Sales
The purpose of this research is to identify common characteristics of commercial banks that are likely to engage in large dollar volumes of OBS financial instruments. Four financial instruments examined are standby letters of credit, letters of credit, interest rate swaps, and loan sales.
Date:
December 1991
Creator:
Cunningham, Reba Love
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Expectations of Pre-Student Teachers, Cooperating Teachers, and College Supervisors for Early Field Experiences at Teachers Colleges in Taiwan
The first purpose of this study was to identify the expectations of pre-student teachers, cooperating teachers, and college supervisors regarding early field experiences. A second purpose was to determine the respective roles of cooperating teachers and college supervisors for providing guidance of early field experiences. The third purpose was to determine alikenesses and differences among the respective participants' perceptions regarding early field experiences.
Date:
December 1991
Creator:
Yang, Ji-Chyuan
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
An Expert System Approach to the Evaluation of Hypertext Engineering : An Experiment with KnowledgePro and MaxThink's
The purpose of this study is to create the prototype expert system, HEES, and to examine its usability and usefulness in evaluating hypertext software.
Date:
December 1991
Creator:
Pak, Min Sun
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
An Exploratory Examination of the Profitability Impact of Quality Dimensions for Consumer Goods and Industrial Capital Goods
The issue of dimensions of quality has received very little attention in the marketing literature. This dissertation studies the impact selected individual dimensions of quality has on firm performance. The study examined the relation between product, service and image based dimensions of quality and firm performance. The performance measure utilized in this study was a firm's return on investment (ROI). Sample for the study included Strategic Business Units (SBUs) involved in the manufacture of consumer goods and industrial capital goods. A theoretical framework that details performance effects of selected variables was developed. Drawing upon previous research in Marketing, Management, Economics, and Strategic Planning, propositions and hypotheses were developed. The data required to test the hypotheses was obtained from the PIMS data base of the Strategic Planning Institute. Several GLM procedures including ANOVA, ANCOVA, and Multiple Comparison tests, such as SNK, Tukey and Bonferroni, were employed to test the various operational hypothesis. The results show that product and image based dimensions of quality impact RoT differentially for consumer goods and industrial capital goods. The extent of the difference depends on the order of market entry and the product's stage in the product life cycle. On the other hand, service based dimensions …
Date:
December 1991
Creator:
Menon, Ajay
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Historical and Analytical Aspects of William Flackton's Sonatas for Viola and Keyboard (OPUS 2. Nos. 2, 4. 6. 8) with Particular Attention to the Sonata in D Maior (OPUS 2. No. 4)
These four sonatas of William Flackton (1709-1798) are probably the earliest collection of sonata literature written for the viola. They exist with a few other string sonatas from the Baroque period in England. It is essential to establish their place in English baroque music and to develop a performance milieu or stylistic preference that leads up to and lasts through the time span of Flackton's sonatas. The final tool to establish an interpretive plan will be to present a general analysis of the four sonatas with special emphasis on the D major sonata (opus 2, no. 4).
Date:
December 1991
Creator:
Rosenbaum, George G. (George Gene)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The history and development of the Criswell College, 1971-1990
This study is a historical analysis of the significant events from 1971 leading to the establishment of The Criswell College and a depiction of the actions of key individuals contributing to the development of The Criswell College.
Date:
December 1991
Creator:
Jacobs, Paul David
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The History of the R. Jan Lecroy Center for Educational Telecommunications of the Dallas County Community College District
The R. Jan LeCroy Center for Educational Telecommunications of the Dallas County Community College District is a leading producer of telecourses for credit at the college level. In addition, the center is becoming involved with other kinds of electronic communication for educational purposes, including the Community College Satellite Network (CCSN), the State of Texas Academic Resources Link (STARLINK), and Instructional Television Fixed Service (ITFS). This study chronicles the DCCCD's progress in electronic distance learning from the time of its first telecourse in 1972 to the present time. This study also describes the center's purposes, the reasons for its growth, the problems that have been encountered, the people who provided its leadership, and the telecourses that have been offered and produced by the DCCCD.
Date:
December 1991
Creator:
Neal, John F. (John Frank)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
How Do Enzymes Wear Out? Effects of Posttranslational Modifications on Structure and Stability of Proteins; The Triosephosphate Isomerase Model
Triosephosphate isomerase (EC 5.3.1.1., TPI) undergoes specific posttranslational modifications (deamidation and oxidation) which are believed to initiate protein turnover by destabilization of the dimer. The crystal structures, amino acid sequences, and aging related changes of TPI from various species have been independently characterized by several laboratories. TPI has thus become the prototype enzyme for examining the initial steps in protein turnover. The binding of substrate enhances the specific deamidation of the mammalian enzyme, and a general mechanism of 'molecular wear and tear' [Gracy, R. W., Yiiksel, K. 0., Chapman, M. L., and Dimitrijevich, S. D. (1990) in Isozymes-Structure, Function and Use in Biology and Medicine (Ogita, Z-I., and Markert, C. L., Eds) pp. 787-817, Wiley-Liss, New York] has been proposed to explain how enzymes may wear out.
Date:
December 1991
Creator:
Sun, An Qiang
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Humanism and the Council of Florence, 1438-1439
The study begins with the development of the nature and character of fifteenth century Italian humanism. It then proceeds to delineate the humanist methodological approach to three key areas; rhetoric, grammar, and historical criticism. Having thus laid this necessary foundation, the work examines selected portions of the debates of the council with regard to each of the three key areas, in order to ascertain whether or not a humanistic approach was utilized by the Latin participants in their argumentations. This investigation concludes that the Latin advocates of the council did indeed employ humanist methodology in both the preparation and presentation of their arguments in the debates. Therefore, such evidence strongly suggests that an appreciation and acceptance of the humanist approach to rhetoric, grammar, and textual criticism existed in the church in the early decades of the fifteenth century.
Date:
December 1991
Creator:
Swisher, Samuel J. (Samuel James)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library