Search Results

A Natural History

Description: A Natural History is a collection of original poetry written over the past three years. This project represents a period of learning and growth, as well as a concentrated effort to develop an individual writing style and voice grounded in the most enduring poetic values of the past.
Date: May 1994
Creator: Pipes, Todd David
Partner: UNT Libraries

Caregiver Personality as a Contributing Factor in Caregiver Burden

Description: Personality characteristics of spousal and adult children and active potential caregivers of persons with Alzheimer's Disease were studied in order to better predict caregiver burden and aspects of well-being. Contrary to prediction, no differences were found between spouse and adult children active caregivers on measures of well-being. Additionally, adult children potential caregivers indicated feeling less control over their lives than spouse potential caregivers. When social desirability was controlled, active caregivers reported greater fluctuations in affect than did potential caregivers. As predicted, personality characteristics of individuals were found to have the biggest role in determining which individuals experience stress or burden.
Date: May 1994
Creator: Anderson, Cristina L. (Cristina Lee)
Partner: UNT Libraries

The Relationship Between Interpersonal Communication Satisfaction and Biological Sex: the Nurse-Physician Relationship

Description: This study examined to what extent the biological sex of the nurse-physician interactants affects the interpersonal communication satisfaction experienced by the nurse. Hypotheses One and Two predicted that communication satisfaction would differ significantly across various combinations of sex of nurse and sex of physician dyads. Hypothesis Three predicted that male nurses would experience higher levels of communication satisfaction than would female nurses. Interpersonal communication satisfaction was operationalized by two self-report instruments. The sample included 153 male and female nurses. Results indicated that same-sex interactions were more satisfying for female nurses, while mixed-sex interactions were more satisfying for male nurses. Nurses reported greater communication satisfaction when interacting with female physicians. Hypothesis three was not supported.
Date: August 1994
Creator: Glenn, Theresa Hammerstein
Partner: UNT Libraries

Improving the Quality of Hotel Banquet Staff Performance: a Case Study in Organizational Behavior Management

Description: The banquet staff at a north Texas hotel were responsible for setting up 11 different functions (e.g., buffet dinners) for conferences and meetings. The functions were often set up late and items were often omitted. An analysis suggested that performance problems were the result of weak antecedents, inefficient work procedures, inadequate training and a lack of motivating consequences. An intervention consisting of task checklists, feedback, goal setting, monetary bonuses, training and job aids was designed to enhance the accuracy and timeliness of function setups. Performance increased from an average of 68.8% on the quality measure (accuracy plus timeliness) in baseline, to 99.7% during the intervention phase. Performance decreased to 82.3% during a follow-up phase in which parts of the intervention were discontinued by hotel management. Performance increased to 99.3% with the reintroduction of the intervention phase.
Date: May 1994
Creator: LaFleur, Tobias C. (Tobias Christopher)
Partner: UNT Libraries

SFE Fractionation and RP-HPLC Characterization of Aquatic Fulvic Acid

Description: The Supercritical Fluid Extraction (SFE) technique was used to fractionate Suwannee River reference fulvic acid (FA). The fractions were characterized by gas chromatography (GC) and reversed-phase high performance liquid chromatography (RP-HPLC). A SFE fractionation method was developed using stepwise gradient of supercritical CO₂ and methanol. Three FA fractions were separated. The average mass recovery was 102% with the coefficient of variation of 2.8%. The fractionation dynamics and the difference in the ratios of UV absorption to fluorescence emission indicate the real fractionation of the FA. The HPLC chromatographic peak patterns and the spectra of the corresponding peaks were almost indistinguishable. The overall results of this research support the argument that FA exhibits polymer-like molecular structure.
Date: May 1994
Creator: Shao, Peimin
Partner: UNT Libraries

Scam King

Description: "Scam King" is a full-length feature screenplay and follows standard script format. The idea behind "Scam King" came originally from the James Joyce short story "Two Gallants" in Dubliners. "Scam King" is, however, not an adaption of Joyce's story, but rather was inspired by the gaps in his story pertaining to the characters' way of life on the street.
Date: May 1994
Creator: Kopchick, Laura A. (Laura Ann)
Partner: UNT Libraries

Trapped in the Body of a Cheerleader: an Original Screenplay

Description: Trapped in the Body of a Cheerleader is a feature-length comedic screenplay using juvenile witticisms and black-comedy to tell the story of a teenaged girl accepting her own identity. The introduction, a personal essay, offers the author's personal views towards screen writing, teen-oriented films, and contemporary screen comedy.
Date: May 1994
Creator: Croasmun, Jean M. (Jean Marie)
Partner: UNT Libraries

Magical Contagion and AIDS Scale: Development and Validation

Description: A Magical Contagion and AIDS Scale was developed to address problems with existing Contagion and AIDS measures. Magical Contagion is an influence that exists after contact is terminated. It is comprised of Permanence, Holographic Effects, Moral Germ Conflation and Backward Action. Data from 280 undergraduates revealed low mean levels of Magical Contagion and AIDS. Contagion effects did not differ on demographic variables. Content validity, criterion-related validity, discriminate validity, and internal consistency were evaluated. Significant correlations were found between the Contagion Scale and Merging/Separation and Homophobia Scales. Negative correlations were found between the Contagion scale and the AIDS knowledge and social desirability scales. Alpha reliabilities were high (a > .93) for the Contagion scale and subscales. Factor analysis suggested the existence of a single factor and mixed support for three factors.
Date: May 1994
Creator: Oizumi, Joelle J. (Joelle Julienne)
Partner: UNT Libraries

American Sandwich: West Coast, East Coast, in Between

Description: The thesis begins with an introduction, followed by six short stories. The stories that follow span three or four regions of the American landscape and three or four decades of the twentieth century. What drives each story is the isolation of both narrator and main character (when these are not the same) from the world of the story. In each story, there is either a sense of wanting to belong or an urge to escape, or both. The paradox--also the writer's paradox--is that if one belongs, one has no need to escape; if one escapes, one can never belong.
Date: August 1994
Creator: Clark, Emily A. (Emily Alcorn)
Partner: UNT Libraries

Influences on the Hispanic Woman's Selection of Work and Social Activity Apparel

Description: This study investigated significant influences including Hispanicness, traditionalism and demographic characteristics on Hispanic women's purchase behavior when selecting work and social activity apparel. A sample of 114 Hispanic women from a Hispanic professional organization or businesses in the Dallas and El Paso, Texas areas. Surveys were collected by mail or administered to subjects. Analyses included frequencies, percentages, t-tests, and Pearson's product-moment correlations. For both situations, mean scores indicated the most influential information sources were: clothing displays, friends, and female family members, while the most used acquisition sources were: department and specialty stores. In both situations, these women had very feminine appearance attributes and very feminine and fashionable clothing style. Hispanicness, traditionalism, and demographic characteristics made some difference when selecting work and social activity apparel.
Date: August 1994
Creator: Sifuentes, D. Ileana
Partner: UNT Libraries

The Communist Party and Soviet Literature

Description: The Communist Party's control of Soviet literature gradually evolved from the 1920s and reached its height in the 1940s. The amount of control exerted over Soviet literature reflected the strengthening power of the Communist Party. Sources used in this thesis include speeches, articles, and resolutions of leaders in the Communist Party, novels produced by Soviet authors from the 1920s through the 1940s, and analyses of leading critics of Soviet literature and Soviet history. The thesis is structured around the political and literary developments during the periods of 1917-1924, 1924-1932, 1932-1941, and 1946-1949. The conclusion is that the Communist Party seized control of Soviet literature to disseminate Party policy, minimize dissent, and produce propaganda, not to provide an outlet for creative talent.
Date: May 1994
Creator: Clark, Rhonda (Rhonda Ingold)
Partner: UNT Libraries

An Exploratory Analysis of Judicial Activism in the United States Supreme Court's Nullification of Congressional Statutes

Description: This study analyzes activist behavior of Supreme Court justices in 132 decisions which struck down congressional statutes as unconstitutional in 1789-1990. Analysis of the justices' activist rates and liberalism scores demonstrate that these votes are ideologically based. Integrated models containing personal attribute and case factor variables are constructed to explore the votes as activist behavior. The same models are also tested with a new dependent variable constructed to measure the nullification votes as liberal votes. The models which explain the votes as ideological responses better explain the votes than the models which explain the votes as activism or restraint. The attribute variables offer better explanation in the late 20th century models and the case factors offer better explanation in the early period models.
Date: August 1994
Creator: Keith, Linda Camp
Partner: UNT Libraries

A Comparative Content Analysis of ITAR-TASS's and the United Press International's Coverage of the Russian Referendum in April 1993

Description: A comparative content analysis was conducted to determine whether the Russian (ITAR-TASS) and the American (UPI) wire service coverage of President Boris Yeltsin in the April 25, 1993, referendum was balanced and unbiased. Also, the amount of space dedicated to this topic was measured. Study results indicate that ITAR-TASS was more critical of Yeltsin prior to the referendum than UPI, and that there was no statistically important difference between the two wire services in their post referendum coverage. UPI articles were almost 30% longer than the ITAR-TASS articles. Each UPI article was on an average more than 220 words longer than were the ITAR-TASS articles.
Date: May 1994
Creator: Glad, Lotte Marie
Partner: UNT Libraries

Red Dresses for Funerals

Description: Red Dresses for Funerals contains a scholarly preface concerning the nature of factuality versus credibility in the writing of fiction. Four original short stories are included in this thesis. "A Night With Lawrence Welk" explores the relationship between a patient and student intern psychologist. "Red Dresses for Funerals" is about a wedding that plays a significant role in a variety of the characters' lives. "Trace Elements" is the only story involving young children. "Trace Elements" explores the beginning of understanding of some of the grimmer aspects of reality. "Expectations, Great and Otherwise" addresses the issue of denial. These stories are linked by their setting, a small town in Texas.
Date: May 1994
Creator: Brooks, Michelle Marie
Partner: UNT Libraries

The Texas Response to the Mexican Revolution: Texans' Involvement with U.S. Foreign Policy Toward Mexico During the Wilson Administration

Description: The Mexican Revolution probably affected Texas more than any other state. As the Revolution intensified, Texans responded with increased efforts to shape the Mexican policies of the Woodrow Wilson administration. Some became directly involved in the Revolution and the U.S. reaction to it, but most Texans sought to influence American policy toward Mexico through pressure on their political leaders in Austin and Washington. Based primarily on research in the private and public papers of leading state and national political figures, archival sources such as the Congressional Record and the Department of State's decimal file, major newspapers of the era, and respected works, this study details the successes and failures that Texans experienced in their endeavors to influence Wilson's Mexican policies.
Date: May 1994
Creator: Snow, L. Ray (Livveun Ray)
Partner: UNT Libraries

The Effect of Verbal and Graphic Feedback on Direct Care Trainers' Data-Tecording Behavior

Description: This study investigated the effects of verbal and graphic feedback alone and in combination with praise on the data-recording behavior of 12 direct care trainers (DCTs) who recorded their reinforcer deliveries as they interacted with mentally retarded clients. An additional variable examined was the effect of time of delivering feedback on subsequent data-recording behavior. Feedback was delivered by the experimenter. Correspondence checks were conducted and a three-phase multiple condition experimental design was used. All feedback conditions produced an observable difference in DCT data-recording behavior. Time of delivery of feedback also appeared to have an effect on the amount of data recorded by DCTs.
Date: May 1994
Creator: Morris, Timothy Jewlon
Partner: UNT Libraries

Reliability of a Graded Exercise Test During Deep Water Running and Comparison of Peak Metabolic Responses to Treadmill Running

Description: Populations that utilize deep water running (DWR) are described in Chapter I. A review of the literature concerning maximal and submaximal responses during DWR, shallow water running and swimming is presented in Chapter II. The protocols to elicit maximal responses during DWR and treadmill running (TMR), subject characteristics, and statistical methods employed are described in Chapter III. The results, presented in Chapter IV, indicate that the DWR protocol is a reliable test for eliciting peak oxygen consumption and heart rate. Furthermore, the metabolic responses during DWR are lower than TMR. Chapter V discusses factors which might limit maximal responses during DWR. Chapter VI contains suggestions for further research. Raw data are presented in Appendix A.
Date: May 1994
Creator: Mercer, John A. (John Andrew)
Partner: UNT Libraries

Effect of Small Group Incentives on Sales Productivity in Two Retail Shops: A Case Study

Description: To meet global competition many companies have reorganized work process systems, eliminated management levels, formed employee work groups and implemented variable compensation systems. This study investigated the effect of group incentives on individual sales performance in two specialty shops located in a large metropolitan hotel. Two questions were addressed: What effect would adding a group bonus plan have on individual employee's sales performance who had previously received hourly wages in one shop; and, what effect would changing an individual incentive plan to a group plan have on the individual employee's sales performance in the other shop. In one shop 5 of 7 employees' productivity increased: in the other, 1 of 3 subjects' productivity increased. Contingencies in both shops are analyzed and suggestions offered for future research.
Date: May 1994
Creator: Bohrer, Kathleen
Partner: UNT Libraries

The Effects of a Performance Improvement Strategy in a Work Team Setting: a Case Study

Description: A popular approach to operating organizations in the 1990s is the implementation of work teams. The current literature offers little information on the use of performance management techniques in work team settings. This case study examined the effects of employing a performance improvement strategy on employee performance in a work team environment comprised of part-time graduate students. The performance improvement strategy included composing job descriptions, job aids (e.g., work organization charts), task request logs and posting weekly and monthly performance feedback. Improvements were observed in some aspects of team performance. Some of the improvement was due to task clarification and improved scheduling produced by the antecedent interventions. Performance feedback had little effect on measured performance but seemed to facilitate discussion and problem-solving.
Date: May 1994
Creator: McHale, Carrie L. (Carrie Lynn)
Partner: UNT Libraries

Vitrification of cesium-contaminated organic ion exchange resin

Description: Vitrification has been declared by the Environmental Protection Agency (USEPA) as the Best Demonstrated Available Technology (BDAT) for the permanent disposal of high-level radioactive waste. Savannah River Site currently uses a sodium tetraphenylborate (NaTPB) precipitation process to remove Cs-137 from a wastewater solution created from the processing of nuclear fuel. This process has several disadvantages such as the formation of a benzene waste stream. It has been proposed to replace the precipitation process with an ion exchange process using a new resorcinol-formaldehyde resin developed by Savannah River Technical Center (SRTC). Preliminary tests, however, showed that problems such as crust formation and a reduced final glass wasteform exist when the resin is placed in the melter environment. The newly developed stirred melter could be capable of overcoming these problems. This research explored the operational feasibility of using the stirred tank melter to vitrify an organic ion exchange resin. Preliminary tests included crucible studies to determine the reducing potential of the resin and the extent of oxygen consuming reactions and oxygen transfer tests to approximate the extent of oxygen transfer into the molten glass using an impeller and a combination of the impeller and an external oxygen transfer system. These preliminary studies were used as a basis for the final test which was using the stirred tank melter to vitrify nonradioactive cesium loaded organic ion exchange resin. Results from this test included a cesium mass balance, a characterization of the semi-volatile organic compounds present in the off gas as products of incomplete combustion (PIC), a qualitative analysis of other volatile metals, and observations relating to the effect the resin had on the final redox state of the glass.
Date: August 1, 1994
Creator: Sargent, T. N., Jr.
Partner: UNT Libraries Government Documents Department

Mixed field dosimetry using focused and unfocused laser heating of thermoluminescent materials

Description: The incidents at the Three Mile Island and Chernobyl have triggered the need for better personnel dosimetry methods in mixed radiation fields. This thesis presents a detailed computational study of a new method for mixed radiation field dosimetry using single-element TL dosimeters with pulsed laser heating schemes. The main objective of this study was to obtain an optimum heating scheme so that the depth-dose distribution in a thick TL dosimeter could be accurately determined. The major parts of the study include: (a) heat conduction calculations for TL dosimeters with various heating schemes, (b) glow curve calculations for TL dosimeters based on a first-order kinetic model, (c) unfolding of the depth-dose distribution based on the glow curve data, and (d) estimation of shallow and deep doses from the unfolded depth-dose distribution. Two optimum heating schemes were obtained in this study. The first one was obtained for a focused laser beam, and the second one was obtained for a uniform laser beam. Both heating schemes consist of two processes: top surface heating and bottom surface heating, and each process in turn consists of a sequence of laser pulses with various heating durations and power levels. Compared to the ``true`` depth-dose distribution obtained using Monte Carlo transport code EGS4, relative errors associated with the shallow and deep doses obtained from the unfolded depth-dose distributions are 5% and 25%, respectively, for the focused laser beam, and 15% in both doses for the uniform laser beam. 74 refs., 148 figs.
Date: March 1, 1994
Creator: Han, S.
Partner: UNT Libraries Government Documents Department

Structural oxidation state studies of the manganese cluster in the oxygen evolving complex of photosystem II

Description: X-ray absorption spectroscopy (XAS) was performed on Photosystem II (PSII)-enriched membranes prepared from spinach to explore: (1) the correlation between structure and magnetic spin state of the Mn cluster in the oxygen evolving complex (OEC) in the S{sub 2} state; and (2) the oxidation state changes of the Mn cluster in the flash-induced S-states. The structure of the Mn cluster in the S{sub 2} state with the g{approx}4 electron paramagnetic resonance (EPR) signal (S{sub 2}-g4 state) was compared with that in the S{sub 2} state with multiline signal (S{sub 2}-MLS state) and the S{sub 1} state. The S{sub 2}-g4 state has a higher XAS inflection point energy than that of the S{sub 1} state, indicating the oxidation of Mn in the advance from the S{sub 1} to the S{sub 2}-g4 state. Differences in the edge shape and in the extended X-ray absorption fine structure (EXAFS) show that the structure of the Mn cluster in the S{sub 2}-g4 state is different from that in the S{sub 2}-MLS or the S{sub 1} state. In the S{sub 2}-g4 state, the second shell of backscatterers from the Mn absorber contains two Mn-Mn distances of 2.73 {angstrom} and 2.85 {angstrom}. Very little distance disorder exists in the second shell of the S{sub 1} or S{sub 2}-MLS states. The third shell of the S{sub 2}-g4 state at about 3.3 {angstrom} also contains increased heterogeneity relative to that of the S{sub 2}-MLS or the S{sub 1} state. Various S-states were prepared at room-temperature by saturating, single-turnover flashes. The flash-dependent oscillation in the amplitude of the MLS was used to characterize the S-state composition and to construct {open_quotes}pure{close_quotes} S-state Mn K-edge spectra. The edge position shifts to higher energy by 1.8 eV upon the S{sub 1} {yields} S{sub 2} transition.
Date: November 1, 1994
Creator: Liang, W.
Partner: UNT Libraries Government Documents Department

Multigrid methods with applications to reservoir simulation

Description: Multigrid methods are studied for solving elliptic partial differential equations. Focus is on parallel multigrid methods and their use for reservoir simulation. Multicolor Fourier analysis is used to analyze the behavior of standard multigrid methods for problems in one and two dimensions. Relation between multicolor and standard Fourier analysis is established. Multiple coarse grid methods for solving model problems in 1 and 2 dimensions are considered; at each coarse grid level we use more than one coarse grid to improve convergence. For a given Dirichlet problem, a related extended problem is first constructed; a purification procedure can be used to obtain Moore-Penrose solutions of the singular systems encountered. For solving anisotropic equations, semicoarsening and line smoothing techniques are used with multiple coarse grid methods to improve convergence. Two-level convergence factors are estimated using multicolor. In the case where each operator has the same stencil on each grid point on one level, exact multilevel convergence factors can be obtained. For solving partial differential equations with discontinuous coefficients, interpolation and restriction operators should include information about the equation coefficients. Matrix-dependent interpolation and restriction operators based on the Schur complement can be used in nonsymmetric cases. A semicoarsening multigrid solver with these operators is used in UTCOMP, a 3-D, multiphase, multicomponent, compositional reservoir simulator. The numerical experiments are carried out on different computing systems. Results indicate that the multigrid methods are promising.
Date: May 1, 1994
Creator: Xiao, Shengyou
Partner: UNT Libraries Government Documents Department

Low temperature carrier transport properties in isotopically controlled germanium

Description: Investigations of electronic and optical properties of semiconductors often require specimens with extremely homogeneous dopant distributions and precisely controlled net-carrier concentrations and compensation ratios. The previous difficulties in fabricating such samples are overcome as reported in this thesis by growing high-purity Ge single crystals of controlled {sup 75}Ge and {sup 70}Ge isotopic compositions, and doping these crystals by the neutron transmutation doping (NTD) technique. The resulting net-impurity concentrations and the compensation ratios are precisely determined by the thermal neutron fluence and the [{sup 74}Ge]/[{sup 70}Ge] ratios of the starting Ge materials, respectively. This method also guarantees unprecedented doping uniformity. Using such samples the authors have conducted four types of electron (hole) transport studies probing the nature of (1) free carrier scattering by neutral impurities, (2) free carrier scattering by ionized impurities, (3) low temperature hopping conduction, and (4) free carrier transport in samples close to the metal-insulator transition.
Date: December 1994
Creator: Itoh, K.
Partner: UNT Libraries Government Documents Department