This system will be undergoing maintenance Monday, January 23 from 8:00 AM to 12:00 PM CST.

  You limited your search to:

 Collection: UNT Theses and Dissertations
An Investigation of Psychopathy in a Female Jail Sample: a Study of Convergent and Discriminant Validity

An Investigation of Psychopathy in a Female Jail Sample: a Study of Convergent and Discriminant Validity

Date: May 1996
Creator: Salekin, Randall T. (Randall Todd)
Description: The present study was designed to assess both the construct of psychopathy in a female jail sample as well as the quality of the measures that have been employed to assess this personality style. Utilizing the multitrait-multimethod matrix proposed by Campbell and Fiske (1959), the construct of psychopathy was measured via three instruments: (a) the Antisocial Scale of the Personality Assessment Inventory, (b) the Psychopathy Checklist - Revised, and (c) the Antisocial Scale of the Personality Disorder Examination. In addition, the predictive validity of each of these measures of psychopathy was evaluated to determine their ability to predict institutional violence and non-compliance. The results revealed significant convergence and divergence across the three instruments supporting the construct of psychopathy in a female jail sample. In addition, the measures of psychopathy demonstrated moderate predictive validity.
Contributing Partner: UNT Libraries
An Investigation of Psychophysical Color Phenomena and their Application to Interior Design

An Investigation of Psychophysical Color Phenomena and their Application to Interior Design

Date: August 1970
Creator: Robinson, Donald I.
Description: The purpose of this study is to analyze and select those psycho-physical color phenomena adaptable to interior design. Among these are phenomena relating to variations in intensity and purity, visual stimulation, spatial relationships, and psychological factors; this study contains suggestions for possible application of these phenomena to strengthen the quality of interior environments.
Contributing Partner: UNT Libraries
Investigation of Pyrimidine Salvage Pathways to Categorize Indigenous Soil Bacteria of Agricultural and Medical Importance and Analysis of the Pyrimidine Biosynthetic Pathway's Enzyme Properties for Correlating Cell Morphology to Function in All Phases of Growth

Investigation of Pyrimidine Salvage Pathways to Categorize Indigenous Soil Bacteria of Agricultural and Medical Importance and Analysis of the Pyrimidine Biosynthetic Pathway's Enzyme Properties for Correlating Cell Morphology to Function in All Phases of Growth

Date: May 2003
Creator: Meixner, Jeffery Andrew
Description: This dissertation comprises three parts and is presented in two chapters. Chapter 1 concerns Arthrobacter, a bacterium with an intriguing growth cycle. Whereas most bacteria exist as either a rod or coccus, this bacterium shares the rod/coccus lifestyle. It therefore seemed important to examine the growth regulatory pathways from the rod and coccus. The committed step, that catalyzed by aspartate transcarbamoylase (ATCase), in the pyrimidine biosynthetic pathway was chosen. The ATCase in Arthrobacter is like the well known Pseudomonas enzyme except that it has an active dihydroorotase (DHOase) associated. Included in Chapter 1 is the description of a microorganism, Burkholderia cepacia, whose ATCase has characteristics that are at once reminiscent of bacteria, mammals, and fungi. It differs in size or aggregation based on environmental conditions. In addition, it has an active DHOase associated with the ATCase, like Arthrobacter. B. cepacia is important both medically and for bioremediation. Since B. cepacia is resistant to most antibiotics, its unique ATCase is a prime target for inhibition. Whereas the first chapter deals with the de novo pathway to making pyrimidines, which is found mainly in the lag and log phase, Chapter 2 addresses the salvage pathway, which comes more into play during the ...
Contributing Partner: UNT Libraries
Investigation of Relational and Overt Aggression Among Boys and Girls

Investigation of Relational and Overt Aggression Among Boys and Girls

Access: Use of this item is restricted to the UNT Community.
Date: August 2003
Creator: Long, Melissa M.
Description: Given the paucity of research that has been conducted on aggression in girls (see Keenan, Loeber, & Green, 1999, for a review), it is important to examine different behavioral manifestations of aggression that may be more prevalent among girls than boys, such as relational aggression (see Crick et al., 1999, for a review). Relational aggression consists of behaviors that harm others through damage to their peer relationships or the threat of such damage (e.g., spreading rumors about a peer so that others will reject him/her, social exclusion; Crick & Grotpeter, 1995). Children with Attention-Deficit/Hyperactivity Disorder (ADHD) are a particular subset of youth who are at increased risk for exhibiting aggressive behavior (Henker & Whalen, 1999; Whalen & Henker, 1985). The purpose of the present study was to assess the prevalence of relational aggression among children with attention problems as compared to the general population. Gender differences in relational aggression were also examined. In the current study, participants included 91 3rd-5th grade public school students. Teacher ratings of aggressive behavior and attention problems were obtained. Parents also completed measures to assess attention problems and social-psychological adjustment. Contrary to prediction, results indicated children with attention problems were not more aggressive than children ...
Contributing Partner: UNT Libraries
An Investigation of Relationships Between Teacher and Administrator Knowledge and Perception of the Texas Assessment of Academic Skills and Student Performance

An Investigation of Relationships Between Teacher and Administrator Knowledge and Perception of the Texas Assessment of Academic Skills and Student Performance

Date: August 2001
Creator: Newton, William Frazier
Description: The purpose of this study was to (1) gather information regarding knowledge of TAAS and perceptions (attitudes) about TAAS (excluding the current battery of End of Course Tests) from teachers and administrators; (2) relate teacher and administrator knowledge and perceptions of the test to student test performance as reported in the Academic Excellence Indicator System (AEIS) Reports. Answers to the following questions were sought: 1. To what extent do teachers and administrators possess different levels of knowledge regarding TAAS, and different attitudes toward TAAS about its purpose and usefulness? 2. Are differences in teacher and administrator knowledge of TAAS related to student performance? 3. Are differences in teacher and administrator attitude toward TAAS related to student performance? Information was collected, by means of a twenty-six-item survey measuring teacher and administrator knowledge and attitude toward TAAS. The selected schools were chosen from schools rated as either exemplary or low performing by the state accountability system. The data were examined using Descriptive Statistics (Mean, Median, Mode, Standard Deviation) and Analysis of Variance (ANOVA). ANOVA was performed to determine if a significant variance existed between the responses of teachers and administrators and also between exemplary and lowperforming schools. Exemplary and low performing schools ...
Contributing Partner: UNT Libraries
An Investigation of School Administrator Personality Type and Gender to Leader Effectiveness, Flexibility, and Years of Experience

An Investigation of School Administrator Personality Type and Gender to Leader Effectiveness, Flexibility, and Years of Experience

Date: August 1995
Creator: Anderson, Linda K., 1950-
Description: The purpose of this study was to determine if there was a relationship between four selected personality categories as measured by Myers-Briggs Type Indicator® (MBTI) and gender to leader effectiveness and flexibility as measured by Leader Behavior Analysis II Self-A® (LBAII Self-A) and years of experience in school administration. A review of literature traced leadership to the Situational Leadership II model utilized in this study. The model was based on selecting the appropriate leadership style for the individual situation and development level of followers. MBTI® measured sixteen combinations of four personality types which included Extravert® or Introvert, Sensing or iNtuitive®, Thinking or Feeling, and Judging or Perceiving. Four types were selected for this study (ISTJ, ESTJ, INTP, and ESFJ). The LBAII Self-A® instrument measured leader effectiveness and flexibility. The sample was 80 Texas school administrators in eleven school districts. Statistics utilized to test the hypotheses included Hotelling's T2, Multiple Analysis of Variance, Analysis of Variance, and Multiple Regression. Independent variables were gender and personality type. Dependent variables were leader effectiveness, flexibility, and years of experience in school administration. Findings reported a significant difference in leader effectiveness scores of the ESTJ personality type. Additionally, Judging/Perceiving was a significant predictor of years ...
Contributing Partner: UNT Libraries
An Investigation of Selected Factors Affecting Automotive Service Excellence Test Outcome and Job Placement Rate

An Investigation of Selected Factors Affecting Automotive Service Excellence Test Outcome and Job Placement Rate

Date: August 1995
Creator: Karbon, Patrick J. (Patrick Joseph)
Description: Under investigation in this study was the effect of ASE certification of automotive technician training programs and other selected factors on ASE test outcome and job placement rate. This research ponders whether the time and money invested in certifying technician training programs is returning desired improvements in this automobile manufacturer's dealer service staff. The study focussed on technicians employed at Chrysler dealerships around the United States. The 2 samples totalling 387 males between the ages of 22 and 30 were drawn from 1,007 graduates of automotive technician training programs. Technicians that completed a formal training program beyond the high school level certified by the National Institute for Automotive Service Excellence (ASE) were compared to others whose training was not certified by ASE. Comparisons were made on the basis of ASE Automobile Technician Test scores and on the length of time from training program completion to employment. This research sought to identify the significance of association between three main predictors - the status of training program ASE certification, work experience and year of training program completion - and the most desirable levels of ASE test outcome (at or above 90% on the ASE test) and job placement rate (immediately following completion ...
Contributing Partner: UNT Libraries
An Investigation of Selected Factors Related to the Professional Status of the Science Teachers in the Four-Year Accredited High Schools of Texas for the School Year 1952-1953

An Investigation of Selected Factors Related to the Professional Status of the Science Teachers in the Four-Year Accredited High Schools of Texas for the School Year 1952-1953

Date: August 1953
Creator: Whitehead, Oren W.
Description: The purpose of this study is to gather information related to the professional status of the science teachers in the four-year accredited high schools of Texas for the school year 1952-1953. The principal concern of the study is "Who is teaching science?"
Contributing Partner: UNT Libraries
An Investigation of Selected Female Singing- and Speaking-Voice Characteristics Through Comparison of a Group of Pre-Menarcheal Girls to a Group of Post-Menarcheal Girls

An Investigation of Selected Female Singing- and Speaking-Voice Characteristics Through Comparison of a Group of Pre-Menarcheal Girls to a Group of Post-Menarcheal Girls

Date: May 1990
Creator: Williams, Bonnie Blu
Description: The purpose of this study was to compare the speaking fundamental frequency, physiological vocal range, singing voice quality, and self-perceptions of the singing and speaking voice between two groups of girls ages 11 through 15 years, who were pre-menarcheal by 6 months and post-menarcheal by 10 months or more. Subjects were volunteers who attended a North Texas public school system. Each subject was examined by an otolaryngologist. Age, height, weight, a hearing screening, and information on music classes and/or private music lessons were obtained. The speaking fundamental frequency measure was obtained by having each subject speak for 30 seconds on a subject of choice and read a passage of approximately 100 syllables. The vocal range measure was obtained by having each subject begin at an arbitrary pitch and sing mah and moo up the scale as high as possible and mah and moo down the scale as low as possible. These four measures were repeated with the researcher giving visual gestures. For singing-voice quality, each subject sang "America" in the key of her choice and again in the key of F major. Each subjects singing voice was rated according to breathiness. Data regarding self-perceptions of the singing and speaking voice ...
Contributing Partner: UNT Libraries
An Investigation of Selected Muscle Potential Activity in Violin/Viola Vibrato

An Investigation of Selected Muscle Potential Activity in Violin/Viola Vibrato

Date: August 1995
Creator: Weber, Matthew J. (Matthew Joseph)
Description: The purpose was to investigate muscle potential during the vibrato motion for successful, healthy violin/viola performers. Electromyography was used to analyze parameters of muscle potentials during performance of a standardized exercise. These parameters were (a) evidence of potentials, (b) patterns of potentials, and (c) timing relationships (24 muscles). This study also sought to replicate and expand performance data from previous studies. Procedures from three pilot studies were used to standardize collection of EMG data. Synchronized video recordings were used to determine vibrato speed and conduct motion analysis. EMG data processing prior to analysis included power spectrum analysis and rectification, low-pass filtering, and smoothing data. Motion analysis findings (£D) were 1.09 for the elbow joints and 3.25 for the wrist joints. which was an indication of range of motion, suggested much greater activity in muscles controlling wrist movement than those moving the elbow. The degree of muscle potential and control were generally related to distance from the vibrating hand. Forearm muscle groups (8) demonstrated the greatest evidence of potential (76.5%) and were 18.1% non-periodic. Muscles of the upper arm (7) were off 59.4% and 57.0% non-periodic. Upper arm muscles had greater individual differences. Muscles of the chest and back (9) were ...
Contributing Partner: UNT Libraries
Investigation of Selected Optically-Active Nanosystems Fashioned using Ion Implantation

Investigation of Selected Optically-Active Nanosystems Fashioned using Ion Implantation

Date: May 2006
Creator: Mitchell, Lee
Description: Opto-electronic semiconductor technology continues to grow at an accelerated pace, as the industry seeks to perfect devices such as light emitting diodes for purposes of optical processing and communication. A strive for greater efficiency with shrinking device dimensions, continually pushes the technology from both a design and materials aspect. Nanosystems such a quantum dots, also face new material engineering challenges as they enter the realm of quantum mechanics, with each system and material having markedly different electronic properties. Traditionally, the semiconductor industry has focused on materials such Group II-VI and III-V compounds as the basis material for future opto-electronic needs. Unfortunately, these material systems can be expensive and have difficulties integrating into current Si-based technology. The industry is reluctant to leave silicon due in part to silicon's high quality oxide, and the enormous amount of research invested into silicon based circuit fabrication. Although recently materials such as GaN are starting to dominate the electro-optical industry since a Si-based substitute has not been found. The purpose of the dissertation was to examine several promising systems that could be easily integrated into current Si-based technology and also be produced using simple inexpensive fabrication techniques such ion implantation. The development of optically active ...
Contributing Partner: UNT Libraries
An Investigation of Serial Painting

An Investigation of Serial Painting

Date: August 1972
Creator: Hetzel, Raymond E.
Description: The purpose of this thesis was to follow a given subject from its inception on a rectangular surface through a series of paintings to a point where the shapes and forms of the original painting culminated in a shaped surface. Each painting except the first one in the series would contain less of the subject than the preceding.
Contributing Partner: UNT Libraries
An Investigation of Simple Reaction Time and Movement Time of the Dominant and Non-dominant Hand of Elementary School Children

An Investigation of Simple Reaction Time and Movement Time of the Dominant and Non-dominant Hand of Elementary School Children

Date: August 1971
Creator: Bartee, Horace Hayne
Description: The purpose of this study was to investigate the reaction time and speed of movement of the dominant and non-dominant arms of elementary-school boys and girls.
Contributing Partner: UNT Libraries
The Investigation of Some Properties of the Gamma Function

The Investigation of Some Properties of the Gamma Function

Date: 1949
Creator: Darnell, Billy R.
Description: The purpose of this paper is to prove the existence of the Gamma function and to give some other properties of the function.
Contributing Partner: UNT Libraries
Investigation of Strategies for Improving STR Typing of Degraded and Low Copy DNA from Human Skeletal Remains and Bloodstains

Investigation of Strategies for Improving STR Typing of Degraded and Low Copy DNA from Human Skeletal Remains and Bloodstains

Date: August 2014
Creator: Ambers, Angie D.
Description: Forensic STR analysis is limited by the quality and quantity of DNA. Significant damage or alteration to the molecular structure of DNA by depurination, crosslinking, base modification, and strand breakage can impact typing success. Two methods that could potentially improve STR typing of challenged samples were explored: an in vitro DNA repair assay (PreCR™ Repair Mix) and whole genome amplification. Results with the repair assay showed trends of improved performance of STR profiling of bleach-damaged DNA. However, the repair assay did not improve DNA profiles from environmentally-damaged bloodstains or bone, and in some cases resulted in lower RFU values for STR alleles. The extensive spectrum of DNA damage and myriad combinations of lesions that can be present in forensic samples appears to pose a challenge for the in vitro PreCR™ assay. The data suggest that the use of PreCR™ in casework should be considered with caution due to the assay’s varied results. As an alternative to repair, whole genome amplification (WGA) was pursued. The DOP-PCR method was selected for WGA because of initial primer design and greater efficacy for amplifying degraded samples. Several modifications of the original DOP-PCR primer were evaluated. These modifications allowed for an overall more robust amplification ...
Contributing Partner: UNT Libraries
Investigation of Structure and Properties of Low Temperature Deposited Diamond-Like Carbon Films

Investigation of Structure and Properties of Low Temperature Deposited Diamond-Like Carbon Films

Date: August 2004
Creator: Pingsuthiwong, Charoendee
Description: Electrodeposition is a novel method for fabrication of diamond-like carbon (DLC) films on metal substrates. In this work, DLC was electrochemically deposited on different substrates based on an anodic oxidation cyclization of acetylene in liquid ammonia. Successfully anodic deposition was carried out for DLC onto nickel substrate at temperatures below -40°C. Comparative studies were performed on a series of different carbon sources (acetylene, sodium acetylide, and a mixture of acetylene and sodium acetylide). The films were characterized using a variety of methods including Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), XPS valence band spectra, and/or scanning electron microscopy (SEM). Raman spectroscopy is used as a bench mark technique to verify the presence of deposited DLC films, to access the films homogeneities, and to provide the ratio of the different carbon phases, mainly disordered graphite (D) and graphite (G) phases in the films. A combination of the Raman with FTIR and valence band spectra analysis allowed the distinction between hydrogenated DLC and unhydrogenated DLC films. Three different kinds of DLC [(1) hydrogenated DLC (a-C:H); (2) tetrahedral hydrogenated DLC (ta-C:H); and (3) graphitic-like DLC] were deposited depending upon the deposition conditions and substrates. Temperature and current density are ...
Contributing Partner: UNT Libraries
An Investigation of Sturctured Aural, Sturctured Visual, and Unstructured Group Counseling Techniques with Elementary School Children

An Investigation of Sturctured Aural, Sturctured Visual, and Unstructured Group Counseling Techniques with Elementary School Children

Date: June 1970
Creator: Crow, Mary Lynn Cox
Description: The purposes of this study were as follows: (1) to ascertain and compare the effect on self-concept, sociometric status including an index of emotional expansiveness, teacher-rated behavior and grades of three group counseling techniques (a structured aural stimulus approach, a structured visual stimulus approach, and an unstructured approach) upon sixth-grade subjects; (2) to compare the subjects involved in these three types of group counseling sessions with subjects in an control group; (3) to compare the differences in effects of the three techniques separately upon girls and upon boys; and (4) to analyze the implications of these findings for elementary school counselors and teachers.
Contributing Partner: UNT Libraries
Investigation of Substituent Effects of 2-Substituted Silaethylenes

Investigation of Substituent Effects of 2-Substituted Silaethylenes

Date: December 1980
Creator: Snyder, Walter David
Description: None
Contributing Partner: UNT Libraries
An investigation of success metrics for the design of e-commerce Web sites.

An investigation of success metrics for the design of e-commerce Web sites.

Access: Use of this item is restricted to the UNT Community.
Date: May 2004
Creator: Cutshall, Robert C.
Description: The majority of Web site design literature mainly concentrates on the technical and functional aspects of Web site design. There is a definite lack of literature, in the IS field, that concentrates on the visual and aesthetic aspects of Web design. Preliminary research into the relationship between visual design and successful electronic commerce Web sites was conducted. The emphasis of this research was to answer the following three questions. What role do visual design elements play in the success of electronic commerce Web sites? What role do visual design principles play in the success of electronic commerce Web sites? What role do the typographic variables of visual design play in the success of electronic commerce Web sites? Forty-three undergraduate students enrolled in an introductory level MIS course used a Likert-style survey instrument to evaluate aesthetic aspects of 501 electronic commerce Web pages. The instrument employed a taxonomy of visual design that focused on three dimensions: design elements, design principles, and typography. The data collected were correlated against Internet usage success metrics data provided by Nielsen/NetRatings. Results indicate that 22 of the 135 tested relationships were statistically significant. Positive relationships existed between four different aesthetic dimensions and one single success measure. ...
Contributing Partner: UNT Libraries
An Investigation of Teacher Initiated Listening Activities in the Elementary General Music Classroom

An Investigation of Teacher Initiated Listening Activities in the Elementary General Music Classroom

Date: August 1981
Creator: Baldridge, William Russell, II
Description: None
Contributing Partner: UNT Libraries
An investigation of technical support issues influencing user satisfaction

An investigation of technical support issues influencing user satisfaction

Date: May 2000
Creator: Gutierrez, Charletta Frances
Description: The widespread distribution of personal computers (PCs) throughout organizations has made a substantial impact on information systems. Additionally, the tremendous growth of the Internet has changed the way business is carried out. As the user population evolves into a much more technical and demanding group, their needs are also changing. With this change, Management Information Systems (MIS) departments must develop new ways of providing service and support to the user community. This study investigates the relationship between information systems support structures, support services, service quality and the characteristics of a diverse user population. This includes investigating technical support issues influencing user satisfaction. This study attempts to improve the understanding of the support function within MIS. The results of this study clarify the support needs of the users and identify user satisfaction factors, as well as factors relative to the quality of the support received. Six streams of prior research were reviewed when developing the research framework. These include: user support, end users and end-user computing, identifying and classifying user types, information centers, user satisfaction, service quality and other sources of computer support. A survey instrument was designed using the (UIS) user satisfaction instrument developed by Doll and Torkzadeh (1988) and ...
Contributing Partner: UNT Libraries
An Investigation of Textural Activity and Its Hierarchical Structures in Selected Works by Krzysztof Penderecki

An Investigation of Textural Activity and Its Hierarchical Structures in Selected Works by Krzysztof Penderecki

Date: May 1986
Creator: Daley, Paul B. (Paul Byron)
Description: 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.
Contributing Partner: UNT Libraries
An Investigation of the Behavioral Implications of Adopting Activity-based Cost Management Systems : An Exploratory Study

An Investigation of the Behavioral Implications of Adopting Activity-based Cost Management Systems : An Exploratory Study

Date: May 1994
Creator: McGowan, Annie Smith
Description: The purpose of this dissertation is to examine the effects of activity-based costing (ABC) and activity-based management (ABM) on managerial and employee behavior.
Contributing Partner: UNT Libraries
An Investigation of the Career Realities and Occupational Concerns of Selected Professional Performing Musicians

An Investigation of the Career Realities and Occupational Concerns of Selected Professional Performing Musicians

Date: August 1985
Creator: Dennis R. Hill
Description: None
Contributing Partner: UNT Libraries