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Analysis of Thermoplastic Polyimide + Polymer Liquid Crystal Blends

Description: Thermoplastic polyimides (TPIs) exhibit high glass transition temperatures (Tgs), which make them useful in high performance applications. Amorphous and semicrystalline TPIs show sub-Tg relaxations, which can aid in improving strength characteristics through energy absorption. The a relaxation of both types of TPIs indicates a cooperative nature. The semicrystalline TPI shows thermo-irreversible cold crystallization phenomenon. The polymer liquid crystal (PLC) used in the blends is thermotropic… more
Date: May 1998
Creator: Gopalanarayanan, Bhaskar
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Experimental and Theoretical Studies of Polycarbocyclic Compounds

Description: Part I. Diels-Alder cycloadditions of 1,2,3,4,9,9-hexachloro-1α,4α,4aα,8aβ-tetrahydro-l,4-methanonaphthalene (32) and 1,2,3,4,9,9-hexachloro-lα,4α,6,7- tetrahydro-l,4-methanonaphthalene (33) to 4-methyl- and 4-phenyl-l,2,4-triazoline-3,5-dione [MTAD and PTAD, respectively] and to N-methylmaleimide (NMM) have been studied. The structures of several of the resulting cycloadducts were determined by X-ray crystallographic methods. The observed stereoselectivity of each of these Diels-Alder reaction… more
Date: May 1998
Creator: Shukla, Rajesh, 1964-
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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The Relationship between Parental Empathy and Parental Acceptance and the Effect of Filial Therapy Training on this Relationship

Description: This study was conducted to determine the relationship between parental empathy (PE) and parental acceptance (PA) and the effect of filial therapy training (FTT) on this relationship. Filial therapy training is a parent education program in which the goal is the development of PE and PA. The Measurement of Empathy in Adult-Child Interaction (MEACI) and the Porter Parental Acceptance Scale (PPAS) are two widely used instruments in filial therapy studies to measure PE and PA, respectively. The pu… more
Date: May 1998
Creator: Poon, Wai-Chi Samuel
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Quantum-Confined CdS Nanoparticles on DNA Templates

Description: As electronic devices became smaller, interest in quantum-confined semiconductor nanostructures increased. Self-assembled mesoscale semiconductor structures of II-VI nanocrystals are an especially exciting subject because of their controllable band gap and unique photophysical properties. Several preparative methods to synthesize and control the sizes of the individual nanocrystallites and the electronic and optical properties have been intensively studied. Fabrication of patterned nanostructur… more
Date: May 1998
Creator: Rho, Young Gyu
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Interactions of Clean and Sulfur-modified Reactive Metal Surfaces with Aqueous Vapor and Liquid Environments : A Combined Ultra-high Vacuum/electrochemistry Study

Description: The focus of this research is to explore the molecular-level interactions between reactive metal surfaces and aqueous environments by combined ultra-high vacuum/electrochemistry (UHV-EC) methodology. The objectives of this work are to understand (1) the effects of sulfate ions on the passivity of metal oxide/hydroxide surface layer, (2) the effects of sulfur-modification on the evolution of metal oxide/hydroxide surface layer, and (3) the effects of sulfur adsorbate on cation adsorption at meta… more
Date: May 1998
Creator: Lin, Tien-Chih, 1966-
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Studies in Bank Contagion: Three Regulatory Events

Description: This research describes an analysis, using event-study methodology, of the reaction of the stock returns of a sample, drawn from the one-hundred largest bank holding companies, to certain actions of regulatory agencies. The first part of the analysis examines the reaction of the bank stocks to the closure of the Bank of New England, using cross-sectional variables not previously examined by other investigators. The second event considers the invalidation of interest-rate swap contracts by the B… more
Date: May 1998
Creator: Springstube, Woodard R. (Woodard Rex)
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Convergence of Self and Other Ratings of Personality: a Structural Equation Analysis

Description: Recently, multi-source feedback has been a popular way of providing performance-related feedback to individuals in many organizations. Many who use multi-source feedback consider Rating Convergence, others seeing target individuals as they see themselves, to be a positive outcome of this process. However, the variables that account for Rating Convergence are not known. This study investigated whether the personality factor Extroversion and Behavioral Consistency, acting as a moderator variable,… more
Date: May 1998
Creator: McElhenie, Michael K. (Michael Keith)
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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The Role and Functions of Diversity Affairs Centers' Chief Personnel Officers at Public Universities in Texas

Description: The problem of this study concerns the role and functions of diversity affairs centers' chief personnel officers at public universities in Texas. Because of the political and evolving nature of diversity affairs offices, it is important to understand the functions and types of services these centers provide with respect to institutional goals, missions, and student retention at public universities in Texas.
Date: May 1998
Creator: David, John Seh
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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The Effects of Parental Divorce and Family Conflict on Young Adults Females' Perceptions of Social Support and Adjustment

Description: The purpose of this study was to explore the effects of parental divorce and family conflict during adolescence on young adult females' social support and psychological adjustment. The three areas explored were perceptions of relationship satisfaction and closeness, sources and amount of social support and adjustment. One hundred and forty-one female undergraduates, 53% from families in which their parents are still married and 47% from families in which a parental divorce occurred during adole… more
Date: May 1998
Creator: Quinn, M. Theresa
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Effects of a Technology Enriched Learning Environment on Student Development of Higher Order Thinking Skills

Description: The problem for this study was to enhance the development of higher order thinking skills and improve attitudes toward computers for fifth and sixth grade students. The purpose of this study was to determine the impact of a Technology Enriched Classroom on student development of higher order thinking skills and student attitudes toward the computer. A sample of 80 sixth grade and 86 fifth grade students was tested using the Ross Test of Higher Cognitive Processes. The Ross Test was selected bec… more
Date: May 1998
Creator: Hopson, Michael H. (Michael Hugh)
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Mandatory Continuing Education in Nursing: a Texas Perspective

Description: This study investigated Texas nurses' attitudes toward mandatory continuing education, and their perceptions of skill improvement, knowledge enrichment and improvement of health care to the public as a result of participation in twenty contact hours of continuing education programs as required by the Board of Nurse Examiners for the State of Texas. This sample of Texas nurses felt that the goals set forth by the Board of Nurse Examiners for the State of Texas had been met by participation in m… more
Date: May 1998
Creator: Prater, Llewellyn Swan
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Matador

Description: Matador is an opera scored for orchestra, mixed chorus and soloists (mezzosoprano, 3 tenors, 2 baritones). The work is in one act divided into two main sections. Each of these sections is divided into subsections. The libretto is aphoristic in nature and dictates the form of each of these subsections. The division into two parts also serves as a means to evoke a sense of hopelessness of emotions in the first and a transforming disposition that culminates in a jubilant song in the second.
Date: May 1998
Creator: Patino, Julio
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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The Effect of Giving Class Time for Reading on the Reading Achievement of Fourth Graders and the Effect of Using a Computer-Based Reading Management Program on the Reading Achievement of Fifth Graders

Description: This study investigated the problem that educators have throughout the state of Texas. The problem educators have is that reading scores continue to fall short of state expectations. This study investigated the effectiveness of 90 minutes of class time given for reading to students who use the Electronic Bookshelf Program and the effectiveness of the Electronic Bookshelf Program, which is being sold to school districts throughout the nation. The literature review focused on the effectiveness of… more
Date: May 1998
Creator: Peters, Rochelle
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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A Longitudinal Study of Graduation, Retention, and School Dropout for Students in Regular and Special Education

Description: This study examined differences in retention, graduation, and dropout between students in grades 9-12 in special education and regular education in the state of Texas for school years 1992-93 through 1995-96. The purpose was to gather information regarding the possible adverse effects of increased academic standards and mandatory testing on students with disabilities. The results indicate that when compared to students in regular education, students with disabilities are significantly more like… more
Date: May 1998
Creator: Smith, Karen S., 1948-
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Scanning Tunneling Microscopy of Epitaxial Diamond (110) and (111) Films and Field Emission Properties of Diamond Coated Molybdenum Microtips

Description: The growth mechanism of chemical vapor deposition (CVD) grown homo-epitaxial diamond (110) and (111) films was studied using ultrahigh vacuum (UHV) scanning tunneling microscopy (STM). In addition, the field emission properties of diamond coated molybdenum microtips were studied as a function of exposure to different gases.
Date: May 1998
Creator: Lim, Seong-Chu
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Gender Differences Associated with Enrollment in the Texas Academy of Mathematics and Science

Description: This study sought to determine if different factors had influenced females and males to select engineering/science-related studies at the Texas Academy of Mathematics and Science (TAMS). The data were collected in the fall semester in 1997 at TAMS located on the University of North Texas campus from a survey of factors reported in the literature that had influenced students to enroll in engineering/science-related curriculum.
Date: May 1998
Creator: Burns, Robert T. (Robert Thomas), 1942-
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Shifts of Focus Among Dimensions of User Information Problems as Represented During Interactive Information Retrieval

Description: The goal of this study is to increase understanding of information problems as they are revealed in interactions among users and search intermediaries during information retrieval. Specifically, this study seeks to investigate: (a) how interaction between users and search intermediaries reveals aspects of user information problems; (b) to explore the concept of representation with respect to information problems in interactive information retrieval; and (c) how user and search intermediaries fo… more
Date: May 1998
Creator: Robins, David B. (David Bruce)
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Social Exchange Under Fire: Direct and Moderated Effects of Job Insecurity on Social Exchange

Description: This study is concerned with the impact of job insecurity on the vital social exchange relationship between employee and employer. Specifically, it explored the relationship between job insecurity and two important social exchange outcomes—organizational commitment and organizational citizenship behavior. Moreover, it assessed the moderating effects of individual factors (communal orientation and powerlessness) and situational factors (trust in management, procedural fairness, and organizationa… more
Date: May 1998
Creator: Bultena, Charles D. (Charles Dean)
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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The Awareness and Perception of Distance Education by the Leadership in the Texas State Technical College System

Description: The purpose of this study was to determine whether there were differences in the levels of awareness and perception concerning distance education among the leadership at the seven campuses of the Texas State Technical College (TSTC) System.
Date: May 1998
Creator: Knue, John Raymond
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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A Quenchofluorometric Study of Polycyclic Aromatic Hydrocarbons in Molecularly Organized Media

Description: Detection, identification and separation of polycyclic aromatic compounds in environmental samples are of extreme importance since many of these compounds are well known for their potential carcinogenic and/or mutagenic activities. Selective quenching of molecular fluorescence can be utilized effectively to analyze mixtures containing different polycyclic aromatic hydrocarbons. Molecularly organized assemblies are used widely in detection and separation of these compounds mainly because of less… more
Date: May 1998
Creator: Pandey, Siddharth
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Thermodynamic and Structural Studies of Layered Double Hydroxides

Description: The preparation of layered double hydroxides via titration with sodium hydroxide was thoroughly investigated for a number of M(II)/M(III) combinations. These titration curves were examined and used to calculate nominal solubility product constants and other thermodynamic quantities for the various LDH chloride systems.
Date: May 1998
Creator: Boclair, Joseph W. (Joseph Walter)
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Technology Infusion in Career Services at U.S. Institutions of Higher Education in the Southwest

Description: The purpose of this study was to examine the use of computer and communications technologies at four-year public/private college and university career centers that are members of the Southwest Association of Colleges and Employers (SWACE). The findings of this study reveal that (a) all career centers are now using computer and telecommunications technologies for at least one office function; (b) small institutions do not use technologies as much as large institutions because they have fewer fi… more
Date: May 1998
Creator: Charoensri, Pijarn
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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An Investigation of Personal Investment Levels Among Nonmusic Major Piano Students Using Portfolio Assessment

Description: The purpose of this study was to compare personal investment levels among nonmusic major piano students in the contexts of portfolio and teacher-directed assessment. Three problems were addressed: 1) identifying students' perceptions of direction, persistence, continuing motivation, intensity, and performance in the context of teacher-directed goal setting, choice of instructional activities, and evaluation of performance; 2) identifying students' perceptions of the five personal investment beh… more
Date: May 1998
Creator: Heisler, Paul K.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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