Search Results

open access

Effects of 5-hydroxytryptamine on Mouse Lumbar Motor Activity During Postnatal Development

Description: The lumbar motor activity in isolated spinal cords of 72 postnatal Balb/C mice aged 2, 5, 10 and 21 days (PN2-21) was electroneurographically recorded (ENG) via bilateral ventral roots following treatment with three different concentrations (25, 100 and 200 pM) of the neurotransmitter, 5-hydroxytryptamine (5-HT), i.e., serotonin, to determine its effects on spinal pattern generation.
Date: December 1998
Creator: Lowe-Chatham, Janice E. (Janice Elaine)
open access

Recognition of Face Images

Description: The focus of this dissertation is a methodology that enables computer systems to classify different up-front images of human faces as belonging to one of the individuals to which the system has been exposed previously. The images can present variance in size, location of the face, orientation, facial expressions, and overall illumination. The approach to the problem taken in this dissertation can be classified as analytic as the shapes of individual features of human faces are examined separate… more
Date: December 1994
Creator: Pershits, Edward
open access

Physiological Effects of Ascaris Suum Intestinal Microflora on 5-Hydroxytryptamine Level and Binding Sites in the Intestinal Epithelial Cells

Description: Serotonin (5-hydroxytryptamine, 5-HT) has been shown to activate carbohydrate metabolism in adult female Ascaris suum. Serotonin may be either absorbed directly from the environment or synthesized de novo from the absorbed L-tryptophan in adult female A. suum. The enzymes necessary for the synthesis of 5-HT have been identified in both intestine and muscle tissues. The serotonin absorbed from the environment is obtained either from the host's gastrointestinal contents or from the 5-HT producing… more
Date: December 1991
Creator: Shahkolahi, Akbar Mohammadpour
open access

Psychosocial and Spiritual Factors Affecting Persons Living with HIV and AIDS

Description: The purposes of this study were (a) to examine whether social support decreases as the person with HIV disease progresses from asymptomatic HIV to symptomatic AIDS and (b) to examine the extent to which general well-being might be mediated through a religious and/or spiritual support system.
Date: August 1993
Creator: Elkins, Tamara L. (Tamara Lynn)
open access

The Effect of Information Technology on Productivity in the Retail Sector

Description: Three major research questions were addressed in this study. First, does information technology contribute to the productivity of retail institutions? Second, to what degree can information technology be substituted for labor and capital in retailing? Finally, is the market efficient in allocating information technology? These questions were chosen after a careful review of the literature revealed gaps in these areas.
Date: August 1995
Creator: Reardon, James F.
open access

Cerebral Laterality and Leadership Assessment

Description: 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)
open access

Prediction of High School Dropouts and Teen-Aged Parents from Student Permanent Records

Description: Research has reported that a predictive link exists between socio-economic risk factors and high school dropouts, including teen-aged parents. Educators have little control over socio-economic risk factors. However, school records and classroom performance data can point to in-school risk factors. The purpose of this study was to help all students by using the in-school data to pinpoint the indicators that predict potential student achievement difficulties in specific areas of curricula. This s… more
Date: August 1995
Creator: Foster, Edward C., 1946-
open access

The Effects of Mirror Confrontation on Body Image Ratings

Description: There are conflicting data in the literature regarding the effects of mirror exposure on subjective body-image evaluation. Much of the objective self-awareness research by Duval and Wicklund concluded that the presence of a mirror leads people to evaluate themselves negatively, while other studies have reported contrary findings. The primary purpose of this study was to determine the effects of mirror confrontation on individuals' body image ratings. Subjects were 88 childless, female universit… more
Date: August 1995
Creator: Dell'Era, Maria Elena
open access

Cultural Identity in Thai Movies and Its Implications for the Study of Films in Thailand

Description: The primary purpose of this study was to find the content and form of movies which conform to the taste of the majority of Thai audiences and, at the same time, are universal enough to attract international audiences. Because film is an extension of other art forms, this required extensive research into the roots of Thai performing arts.
Date: August 1993
Creator: Dunagin, Kultida Boonyakul
open access

Relationship of Leadership Importance Ratings and Leadership Competency Ratings Across Adjacent Management Levels

Description: Effective leadership can and does influence organizational performance. The Executive Success Profile, a multi-rater feedback instrument, was used to gather perception data on 51 executives and 310 senior managers of a large Fortune 500 electronics manufacturing company in regards to three critical leadership dimensions: visionary thinking, empowering others, and global perspective. Paired t-tests were run to compare the means of the two samples. Significant differences were found between execu… more
Date: May 1998
Creator: Goldman, Joshua L. (Joshua Lee)
open access

"Making the Change": Middle School Band Students' Perspectives on the Learning of Musical-Technical Skills in Jazz Performance

Description: Students' perspectives in jazz education have gone largely ignored. A modified analytic inductive design allowed me to look broadly at the students' jazz band experience while specifically investigating their views about playing individualized parts, improvising, and interpreting and articulating swing rhythms. A focus group procedure was altered (Krueger, 1995) and incorporated into my teaching of 19 students. Two 30 minute sessions per week over a 12 week period were video- and audiotaped. Au… more
Date: August 1996
Creator: Leavell, Brian K.
open access

An Assessment of the University of North Texas's Image among the University of North Texas Administration and Board of Regents, Metro-Plex Business Leaders, the Higher Education Coordinating Board, and the Texas House and Senate Sub-Committees

Description: The purpose of this study was to ascertain the image of the University of North Texas as perceived by the University Administration and Board of Regents, Texas Higher Education Coordinating Baord and selected Legislators, and the Boards of Directors of the Metroplex area Chambers of Commerce. The significance of the study was to contribute knowledge that could be used to construct a more direct and cost effective marketing plan.
Date: August 1993
Creator: Hill, S. Trent (Stanley Trenton)
open access

Intuition versus Formalization: Some Implications of Incompleteness on Mathematical Thought

Description: This paper describes the tension between intuition about number theory and attempts to formalize it. I will first examine the root of the dilemma, Godel's First Incompleteness Theorem, which demonstrates that in any reasonable formalization of number theory, there will be independent statements. After proving the theorem, I consider some of its consequences on intuition, focusing on Freiling's "Dart Experiment" which is based on our usual notion of the real numbers as a line. This experiment gi… more
Date: August 1994
Creator: Lindman, Phillip A. (Phillip Anthony)
open access

Conditional Discriminations and Derived Relations: Pinpointing the Moment of Emergence

Description: Four subjects were exposed to the four trial types that define stimulus equivalence from the beginning of the experiment. Procedures were designed to identify acquisition dynamics and relate these observations to responding indicative of equivalence class formation. The data show that, for all subjects, the acquisition of training conditional discriminations was correlated with systematic changes in the subjects' selection responses. The results also indicate that the traditional percent correc… more
Date: August 1994
Creator: Vaidya, Manish
open access

Behold the Fields: Texas Baptists and the Problem of Slavery

Description: The relationship between Texas Baptists and slavery is studied with an emphasis on the official statements made about the institution in denominational sources combined with a statistical analysis of the extent of slaveholding among Baptists. A data list of over 5,000 names was pared to 1100 names of Baptists in Texas prior to 1865 and then cross-referenced on slaveownership through the use of federal censuses and county tax rolls. Although Texas Baptists participated economically in the slave … more
Date: May 1993
Creator: Elam, Richard L. (Richard Lee)
open access

The Role of Parental Involvement in a Chapter I Extended-Day Kindergarten

Description: This studied investigated parental involvement during the first year of a Chapter I extended-day kindergarten program which sought to promote parents taking an active role in their child's classroom and kindergarten educational experiences. A qualitative design was used to provide information about frequency and types of parental involvement as well as descriptive information about the interactions between parents and children within the classroom. This qualitative design also allowed investiga… more
Date: August 1992
Creator: Stiefer, Toni Kilpatrick
open access

Stock and Species Identification of Selected Marine Fishes and Shellfishes Using Allozyme Analysis and Isoelectric Focusing: Implications for Texas Fisheries Management

Description: Allozyme frequencies and general protein patterns were surveyed among selected Texas marine fishes and shellfishes to illustrate the application of biochemical genetic techniques to stock and species identification in fisheries management.
Date: May 1992
Creator: King, Timothy L. (Timothy Lee)
open access

Play Therapy Behavior of Sexually Abused Children

Description: This survey research was designed to identify play therapy behaviors of sexually abused children. A survey instrument was developed from a comprehensive review of the professional literature and the assistance of an expert panel. After a field test, 140 items of play therapy behavior were developed into a survey instrument. The respondent was asked to rate on a Likert scale the frequency of occurrence of these play therapy behaviors of sexually abused children. Each play therapy behavior was ra… more
Date: December 1994
Creator: Homeyer, Linda.
open access

The Feasibility of Using an Adaptation of the Montessori Method to Teach Basic Nursing Skills to Beginning Generic Baccalaureate Nursing Students

Description: The purposes of this study are to determine the extent to which nursing education administrators accept the use of an adapted Montessori method in teaching basic nursing skills and to determine the feasibility of implementing such a method.
Date: August 1992
Creator: Paterniti, Anthony Peter
open access

Using Normal Deduction Graphs in Common Sense Reasoning

Description: This investigation proposes a powerful formalization of common sense knowledge based on function-free normal deduction graphs (NDGs) which form a powerful tool for deriving Horn and non-Horn clauses without functions. Such formalization allows common sense reasoning since it has the ability to handle not only negative but also incomplete information.
Date: May 1992
Creator: Munoz, Ricardo A. (Ricardo Alberto)
open access

The Role of Electronic Messaging in the Intermediate Business Context

Description: This research examines the role of electronic messaging in business firms. The study presents a taxonomy of electronic mail uses, develops a theoretical framework for analyzing electronic mail impact, and investigates risks and advantages of electronic messaging. The research focus is intermediate-size firms.
Date: May 1996
Creator: Case, Carl Jay
open access

An Attitude Assessment of Amateur Musicians in Adult Community Bands

Description: The purpose of this study was to ascertain certain factors which lead adults to participate in community band activity. This study attempted to answer the following questions: 1. What are the factors of rewards for community band participants based on the responses of a selected sample to validated attitude statements? 2. What are the relationships that might exist between certain demographic characteristics of the sample such as age, gender, education, occupation, musical training, geographic … more
Date: December 1996
Creator: Spencer, William David, 1952-
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