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 Collection: UNT Theses and Dissertations
Liquid Nitrogen Propulsion Systems for Automotive Applications: Calculation of Mechanical Efficiency of a Dual, Double-acting Piston Propulsion System

Liquid Nitrogen Propulsion Systems for Automotive Applications: Calculation of Mechanical Efficiency of a Dual, Double-acting Piston Propulsion System

Date: May 2008
Creator: North, Thomas B.
Description: A dual, double-acting propulsion system is analyzed to determine how efficiently it can convert the potential energy available from liquid nitrogen into useful work. The two double-acting pistons (high- and low-pressure) were analyzed by using a Matlab-Simulink computer simulation to determine their respective mechanical efficiencies. The flow circuit for the entire system was analyzed by using flow circuit analysis software to determine pressure losses throughout the system at the required mass flow rates. The results of the piston simulation indicate that the two pistons analyzed are very efficient at transferring energy into useful work. The flow circuit analysis shows that the system can adequately maintain the mass flow rate requirements of the pistons but also identifies components that have a significant impact on the performance of the system. The results of the analysis indicate that the nitrogen propulsion system meets the intended goals of its designers.
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El Lirismo Indigena en las Novelas de Jose Maria Arguedas

El Lirismo Indigena en las Novelas de Jose Maria Arguedas

Date: May 1973
Creator: Centurión, César Enrique
Description: The purpose of this thesis is to show that an indigenous, emotional, and poetic lyricism is found in the novels of Jose Maria Arguedas, which distinguishes and separates Arguedas from the Hispanic indigenous classical writers.
Contributing Partner: UNT Libraries
The List

The List

Date: December 2009
Creator: O'Brien, Tanner Chase
Description: The List is a collection of short stories focusing on the inability to adapt, or learn from self-destructive patterns, and the bizarre ways people reach out for one another when they don't know what else to do.
Contributing Partner: UNT Libraries
Listening to the Freshman Voice: First-year Self-efficacy and College Expectations Based on High School Types

Listening to the Freshman Voice: First-year Self-efficacy and College Expectations Based on High School Types

Date: May 2013
Creator: May, Paul B.
Description: This quantitative study used Astin's I-E-O theory to explore the relationship between a college freshman's high school background and academic self-efficacy. The Beginning College Survey of Student Engagement was used to measure academic self-efficacy across four types of high schools. Student gender and precollege experiences (dual-credit and communication assertiveness) were used as control. A total of 15,400 first-year students were included in this study. An ANOVA was used to examine the differences between groups, and ordinary least-square analysis was used to study the factors that affect academic self-efficacy. Results showed statistically significant difference in academic self-efficacy between public and private religious high school graduates. Specifically, graduates of public high schools had statistically higher academic self-efficacy than graduates of private religious high schools (p < .001). Additionally, females and participants of dual-credit courses also tended to have higher academic self-efficacy. Finally, analysis revealed that a first-year student's communication confidence is highly correlated to their academic self-efficacy. Results confirm in-coming first-year students perceive higher education engagement differently based on traits attributed to their precollege experiences. Results point to criteria colleges may be able to use in identifying freshmen at risk for low academic self-efficacy and, therefore, for problems in retention and degree ...
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Literary and Realistic Influences upon the Women of the Spectator

Literary and Realistic Influences upon the Women of the Spectator

Date: August 1952
Creator: Perry, Carolyn Oliver
Description: This study will outline the two great literary genres of character-writing and satire, upon the tradition and practice of which Joseph Addison and Richard Steele based their characters of women in the Spectator. The three-fold purpose of this study is to determine how the Spectator was influenced by, and what it in turn contributed to, the two literary genres, the "Character" of women and satire on women; and to present the social status of the female audience as it existed and as the Spectator sought to improve it.
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The Literary Criticism of H. L. Mencken

The Literary Criticism of H. L. Mencken

Date: December 1970
Creator: Sellers, Stephen W.
Description: The thesis of this paper is that Mencken was a better critic than he is credited with being, that he was unusually discerning in his judgment of the fiction of his time, and that his criteria are clearly stated in various of his writings. It is conceded, however, that his taste in poetry was limited and that his contribution to dramatic criticism was not? greatly significant.
Contributing Partner: UNT Libraries
The Literary Theory of Ayn Rand

The Literary Theory of Ayn Rand

Date: January 1969
Creator: Carpenter, Thomas W.
Description: The author believes that Ayn Rand presents a systematic approach to aesthetics and that her work presents an interesting and significant approach to aesthetic problems. The author will attempt to present Ayn Rand's basic aesthetic concepts that throw light on her literary theory. The author will also present her views on literary schools and of individual authors.
Contributing Partner: UNT Libraries
Literature in the Age of Science: Technology and Scientists in the Mid-Twentieth Century Works of Isaac Asimov, John Barth, Arthur C. Clarke, Thomas Pynchon, and Kurt Vonnegut

Literature in the Age of Science: Technology and Scientists in the Mid-Twentieth Century Works of Isaac Asimov, John Barth, Arthur C. Clarke, Thomas Pynchon, and Kurt Vonnegut

Date: August 2010
Creator: Simes, Peter A.
Description: This study explores the depictions of technology and scientists in the literature of five writers during the 1960s. Scientists and technology associated with nuclear, computer, and space science are examined, focusing on their respective treatments by the following writers: John Barth, Kurt Vonnegut, Thomas Pynchon, Isaac Asimov, and Arthur C. Clarke. Despite the close connections between the abovementioned sciences, space science is largely spared from negative critiques during the sixties. Through an analysis of Barth's Giles Goat-boy, Vonnegut's Cat's Cradle, Pynchon's The Crying of Lot 49, Asimov's short stories "Key Item," "The Last Question," "The Machine That Won the War," "My Son, the Physicist," and Clarke's 2001: A Space Odyssey, it is argued that altruistic goals of space science during the 1960s protect it from the satirical treatments that surround the other sciences.
Contributing Partner: UNT Libraries
Litigation Subsequent to a Mandated Psycho-Educational Seminar for Divorcing Parents

Litigation Subsequent to a Mandated Psycho-Educational Seminar for Divorcing Parents

Date: May 1997
Creator: Buckner, Brenda Sullivan
Description: This study was designed to assess the difference in litigation between two courts: one mandating For Kids' Sake, a psycho-educational seminar for divorcing parents, and the other not so mandating. The level of difficulty of children's adjustment to divorce has been positively correlated with parental hostility. More hostile parents would have more contested cases, interim motions, and relitigations. This research compared final dispositions, interim motions, and relitigation between parents in two courts in Collin County, Texas. The treatment group was from the 219th District Court which mandated all divorcing parents with minor children to attend the For Kids' Sake Seminar and the control group was from the 199th District Court which did not so mandate. Archival data was collected from a computer generated list for the Total group data to assess final dispositions and directly from District Clerk files for the In-Depth group data to assess interim motions and relitigation. The Total group was comprised of 679 research subjects with 330 cases in the treatment group and 349 cases in the control group. The In-Depth group consisted of 182 cases from both courts with 84 cases in the treatment group and 98 cases in the control group. Chi square analysis ...
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Little Deviants

Little Deviants

Date: December 2000
Creator: Booker, Paul
Description: Most of my childhood was spent in either the expansive suburbs of north Texas or on a farm in southern Oklahoma. The experience of growing up in these two regions has done much to shape my sense of aesthetic. From these early experiences, I have developed two completely divergent ideas of beauty which I've tried to reconcile in my artwork. The first influence is that of sparseness, simplicity and the commonplace. This influence comes from the emptiness of the suburban landscape, the sameness of its architecture and the need to find beauty in mundane things as a simple cure for boredom. The second major idea is centered around peculiarity, chaotic complexity and irrationality. This interest originally stems from early memories of my grandfather, whose experiences in Oklahoma during the Great Depression gave him the obsessive habit of never discarding anything for fear that he might need it some day. The complexity in meaning that comes from unfamiliar combinations has allowed the ideas in my work a kind of ambiguity that frees it from any singular reading. I think the content of my work could best be described as constructions of memories, experiences and influences. I never speak about any one ...
Contributing Partner: UNT Libraries