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The Effects of a Conflicting Instruction on a Fr 5 Performance
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The purpose of this experiment was to evaluate the effects of a conflicting instruction on FR-5 performances by an ABABC design. After all four college students were consistently pressing 1-5-3 followed by sound-clips, the schedule value changed to FR-5 (A). Then they were presented with the written instruction "Press 426" (B) in addition to the previous condition. In the last condition (C), 1-5-3 responses were then scheduled for extinction in three participants and the reinforcer was changed from sound-clips to points for one participant. The results showed that unlike previous experiments, instructions did not override the scheduled contingencies. Instruction-following occurred only when there were no other contingencies (i.e., extinction of 1-5-3) or the scheduled reinforcer for FR-5 performances was weak.
Date:
May 2001
Creator:
Koremura, Yuka
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Break-up of the Confederate Trans-Mississippi Army, 1865
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Unlike other Confederate armies at the conclusion of the Civil War, General Edmund Kirby Smith's Trans-Mississippi Army disbanded, often without orders, rather than surrender formally. Despite entreaties from military and civilian leaders to fight on, for Confederate soldiers west of the Mississippi River, the surrender of armies led by Generals Robert E. Lee and Joseph E. Johnston ended the war. After a significant decline in morale and discipline throughout the spring of 1865, soldiers of the Confederate Trans-Mississippi Department chose to break-up and return home. As compensation for months of unpaid service, soldiers seized both public and private property. Civilians joined the soldiers to create disorder that swept many Texas communities until the arrival of Federal troops in late June.
Date:
May 2001
Creator:
Clampitt, Brad R.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Geography of Tuberculosis in the Greater Accra Region of Ghana
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In Ghana, spatial patterns of TB vary for different regions and variations may occur within the same region. This study examines TB distribution in the Greater Accra Region of Ghana using Geographic Information Systems (GIS). Behavioral, cultural and economic variables associated with TB morbidity are examined. From January 1998 to June 1999, data obtained from the Ghana Ministry of Health revealed that, men had a higher TB rate than women, TB was common among the age groups 20-29 and 30-39, and the average TB rate of 67.7 per 100, 000 population in the Greater Accra Region was higher than the national average (58.6 per 100,000 population). Using the human ecology model, this study attempts to explain the spatial distribution of the disease.
Date:
May 2001
Creator:
Donkor, Kweku
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Reactions of psychotherapists in training to religious questions
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This project investigated the spiritual well-being (SWB) of psychotherapists in training and their physiological reactions to religious questions posed by a mock client. Electrodermal activity served as an index of physiological arousal interpreted as anxiety. Thirteen psychotherapists in training at the University of North Texas were recruited. They participated in a simulated intake session with a mock client who asked the psychotherapist neutral questions, personal-other questions (POQs), and personal-religious questions (PRQs). It was discovered that the level of SWB did not affect subjects' anxiety responses to PRQs. There also was no difference in subjects' anxiety responses for POQs between high and low SWB therapists. However, psychotherapists did experience some anxiety associated with questions related to their counseling experience and expertise.
Date:
May 2001
Creator:
Hutchinson, Geoffrey
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Layered Double Hydroxides and the Origins of Life on Earth
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A brief introduction to the current state of research in the Origins of Life field is given in Part I of this work. Part II covers original research performed by the author and co-workers. Layered Double Hydroxide (LDH) systems are anion-exchanging clays that have the general formula M(II)xM(III)(OH)(2x+2)Y, where M(II) and M(III) are any divalent and trivalent metals, respectively. Y can be nearly any anion, although modern naturally occuring LDH systems incorporate carbonate (CO32-), chloride (Cl-), or sulfate (SO42-) anions. Intercalated cobalticyanide anion shows a small yet observable deviation from local Oh symmetry causing small differences between its oriented and non-oriented infrared spectra. Nitroprusside is shown to intercalate into 2:1 Mg:Al LDH with decomposition to form intercalated ferrocyanide and nitrosyl groups of an unidentified nature. The [Ru(CN)6]4- anion is shown to intercalate into layered double hydroxides in the same manner as other hexacyano anions, such as ferrocyanide and cobalticyanide, with its three-fold rotational axis perpendicular to the hydroxide sheets. The square-planar tetracyano-nickelate(II), -palladate(II), and platinate(II) anions were intercalated into both 2:1 and 3:1 Mg:Al layered double hydroxides (LDH). The basal spacings in the 2:1 hosts are approximately 11 Å, indicating that the anions are inclined approximately 75 degrees relative to …
Date:
May 2001
Creator:
Brister, Brian
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Improving Appointment Keeping at an Eye Care Clinic Using a Revised Process Package
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Missed appointments by patients are a major problem for health care professionals. To combat this issue, some optometrists use a pre-appointing system in which patients are scheduled for an annual exam a year after their initial visit. Prior to that subsequent appointment, clinic staff often try to contact the patient to confirm the appointment. This study examined baseline levels of appointment keeping, analyzed existing processes for pre-appointing patients, and introduced a revised process package to improve appointment keeping at an eye care clinic. This package included training, mailed postcard reminders and two phone call reminders. Results indicate appointment keeping by pre-appointed patients increased over baseline. The intervention was also shown to be cost-beneficial.
Date:
May 2001
Creator:
Hodge, Victoria L.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A preliminary study on the effect of selective serotonin reuptake inhibitors on peripheral and lower brainstem auditory processing.
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This study compared auditory behavioral and physiologic measures in normal control subjects and subjects prescribed with a selective serotonin reuptake inhibitor (SSRI) who were yet to take the drug and those currently taking an SSRI. Test measures used were pure tone averages (PTA), acoustic reflex thresholds, uncomfortable loudness levels (UCL), otoacoustic emissions, masking level difference, temporal integration, amplitude resolution, and Beck Depression Inventory-II (BDI-II) scores. Results indicated that there was a significant difference in the amplitude resolution of the unmedicated group when compared to the medicated and the control group. There was also a significant positive correlation between dynamic range (difference between UCL and PTA) and amplitude resolution. The BDI-II revealed a significant difference between the scores of the unmedicated and the control group as well as the medicated and the control group. Although other test measures indicated differences between the groups, the differences were not statistically significant.
Date:
May 2001
Creator:
Carney, Lara E.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A model for designing a new telecommunication system in Mongolia
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The objective of this research is to design, and determine the feasibility of, a telecommunication system for the city of Erdenet, Mongolia. The Mongolian Telecommunication Company, Telecommunication Company of Erdenet city, and the National Statistical Office of Mongolia provided the data required for telecommunication forecasting of Erdenet. The literature review and analysis of the telecommunication forecasting indicate the need for a model of a new Telecommunication system in Erdenet, Mongolia. The model, as indicated, should become a useful example for planning and updating the telecommunication system in Mongolia. The design of a proposed telecommunication network involves the following considerations: analyzing and forecasting telephone traffic, calculating the required number of channels, determining exchange locations, traffic matrix, and establishing a basic hierarchical structure.
Date:
May 2001
Creator:
Baatarjav, Enkhbat
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Master’s Recital: 2012-04-05 - Arsentiy Kharitonov, piano
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Recital presented at the UNT College of Music Voertman Hall in partial fulfillment of the Master of Music (MM) degree.
Date:
April 5, 2012
Creator:
Kharitonov, Arsenity
Object Type:
Video
System:
The UNT Digital Library
Southland, The Completion Of a Dream: The Story Behind Southern Newsprint's Improbable Beginnings
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The purpose of this thesis is to explore the creative process behind Southland Paper Mills, the South's first newsprint factory. The thesis describes the conditions leading to the need for southern newsprint. It then chronicles, through the use of company records, the difficult challenges southern newsprint pioneers faced. The thesis follows the company history from the gem of an idea during the mid 1930's through the first decade of the Southland's existence. The paper concludes with the formative years of the company in the 1940's.
Date:
May 2001
Creator:
McGrath, Charles
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Effect of Steroid Dose Regimen on the Relationship Between Lower Extremity Muscle Function and Cardiac Function in Post Heart Transplant Patients
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Differences in cardiovascular/aerobic function in heart transplant patients might be attributed to the rate of corticosteroid withdrawal and/or to skeletal muscle function. This hypothesis was tested among nine male, cardiac transplant recipients. Prednisone dosage was monitored, and isokinetic strength testing was performed at 4 different time periods throughout the first year post-transplantation. Cardiovascular/aerobic measurements were obtained at the fourth time period. Pre-surgery characteristics were obtained from the patient's medical record. Significant Pearson-product moment correlations were only found between muscle function and aerobic function and between pre-surgery characteristics and cardiovascular/aerobic performance. The results of this study show no evidence that rapid reduction of prednisone dosage enhances aerobic function by benefiting skeletal muscle function.
Date:
May 2001
Creator:
Galatas, Mary V.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Parts of Women
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Use of this item is restricted to the UNT Community
Parts of Women contains a scholarly preface that discusses the woman's body both in fiction and in the experience of being a woman writer. The preface is followed by five original short stories. "Parts of Women" is a three-part story composed of three first-person monologues. "Controlled Burn" involves a woman anthropologist who discovers asbestos in her office. "Tango Lessons" is about a middle-aged woman who's always in search of her true self. "Expatriates" concerns a man who enters the lives of his Hare Krishna neighbors, and "Rio" involves a word-struck man in his attempt to form a personal relationship.
Date:
May 2001
Creator:
Murphy, Maria Christine
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Master's Recital: 2012-03-03 - Lindsey Rae Johnson, soprano
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Recital presented at the UNT College of Music Voertman Hall in partial fulfillment of the Master of Music (MM) degree.
Date:
March 3, 2012
Creator:
Johnson, Lindsey Rae
Object Type:
Video
System:
The UNT Digital Library
Reflections on the Development of Children of Alcoholics
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The specific purpose of this study was to try and understand why unique experiences of living with an alcoholic parent could create developmental deficits which emotionally challenge COAs' when faced with the life lessons a college environment offers. This study offered four possible explanations for experiencing challenges in its theoretical background: (1) psychosocial development, (2) the epistemology of alcoholism and its effects on the family, (3) personality development and the concurrence of building resilience, and (4) the college environment itself, with the phenomenon of binge drinking--forcing COAs to confront family alcoholism. A total of 7 participated in this study--4 men and 3 women. Despite the dynamic differences in the answers overall, all 7 participants acknowledged one important concept. When the participants were asked about their own drinking habits, each participant said, though in different ways, they had to be careful with their drinking habits. Participants seemed to be aware that whether alcoholism is genetic or a learned addiction, they were at risk of becoming alcoholics themselves. This study found overall, as previous literature suggests, no matter how COAs are studied, they are found to be a heterogeneous population. Specifically, this study's results points out that they are indeed heterogeneous, yet …
Date:
May 2001
Creator:
Weise, Molly Amanda
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Cure Kinetics and Processing Parameters of Neat and Reinforced High Performance Epoxy Resins: Evaluation of Techniques
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Kinetic equation parameters for the curing reaction of a commercial glass fiber reinforced high performance epoxy prepreg composed of the tetrafunctional epoxy tetraglycidyl 4,4-diaminodiphenyl methane (TGDDM), the tetrafunctional amine curing agent 4,4Â’-diaminodiphenylsulfone (DDS) and an ionic initiator/accelerator, are determined by various thermal analysis techniques and the results compared. The reaction is monitored by heat generated determined by differential scanning calorimetry (DSC). The changes in physical properties indicating increasing conversion are followed by shifts in glass transition temperature determined by DSC and temperature-modulated DSC (TMDSC), thermomechanical (TMA) and dynamic mechanical (DMA) analysis and thermally stimulated depolarization (TSD). Changes in viscosity, also indicative of degree of conversion, are monitored by DMA. Thermal stability as a function of degree of cure is monitored by thermogravimetric analysis (TGA). The parameters of the general kinetic equations, including activation energy and rate constant, are explained and used to compare results of various techniques. The utilities of the kinetic descriptions are demonstrated in the construction of a useful time-temperature-transformation (TTT) diagram for rapid determination of processing parameters in the processing of prepregs. Copyright is held by the author, unless otherwise noted. All rights reserved. Files: Thesis.pdf Special Conditions
Date:
December 1999
Creator:
Bilyeu, Bryan
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Hospitality Students' Attitudes and Behavioral Intentions toward Learning and Using Computer Technology
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Following Ajzen/Fishbein's 1980 Theory of Reasoned Action, influences of hospitality students' external variables (age, gender, university classification, and work experience) on computer attitudes, and relationships between computer attitudes and intentions to learn and use computers were tested. A sample of 412 hospitality students completed two measurements: Loyd/Gressard's 1984 Computer Attitude Scale, and Behavioral Intentions to Learn and Use Computers. Males and females had positive computer attitudes. Graduates had more positive computer attitudes. No interaction effect existed between gender and classification. No relationships existed between age and work experience on computer attitudes. Computer attitudes positively correlated with intentions to learn and use computers. Results supported the Theory of Reasoned Action. External variables partially influence attitudes and attitudes influence intentions.
Date:
December 1999
Creator:
Chuvessiriporn, Suttichai
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Development of a Coaxiality Indicator
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Use of this item is restricted to the UNT Community
The geometric dimensioning and tolerancing concept of coaxiality is often required by design engineers for balance of rotating parts and precision mating parts. In current practice, it is difficult for manufacturers to measure coaxiality quickly and inexpensively. This study examines feasibility of a manually-operated, mechanical device combined with formulae to indicate coaxiality of a test specimen. The author designs, fabricates, and tests the system for measuring coaxiality of holes machined in a steel test piece. Gage Repeatability and Reproducibility (gage R&R) and univariate analysis of variance is performed in accordance with Measurement System Analysis published by AIAG. Results indicate significant design flaws exist in the current configuration of the device; observed values vary greatly with operator technique. Suggestions for device improvements conclude the research.
Date:
December 1999
Creator:
Arendsee, Wayne C.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Techniques of Sensual Perception: The Creation of Emotional Pathways
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Some artists strive to create artwork that has aesthetic value. If a piece of artwork has the ability to capture the attention of an audience, it must contain strong sensual attributes. Thus, understanding how to design an art form to contain strong sensual attributes may increase the possibility of an aesthetic experience. Since aesthetics is an experience of sensations perceived when in contact with a creative form in any artistic discipline, it is necessary for an artist to understand the nature of the sensual experience. In understanding the sensual experience, artists may be able to create techniques to enhance the aesthetic experience of their work. My video piece, entitled Ararat is a study of methods to enhance the sensual experience. I hope to accomplish this by means of using techniques that optimize an audience's perceptual experience.
Date:
December 1999
Creator:
Henry, Jon L.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Bird Bones and a Hatched Egg
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A fifty page manuscript of poetry and a critical introduction detailing the poet's aesthetics. Using the idea of the double-image and eroticism, the poet places her work in the category of the surreal. She describes the process of writing poetry born of fragmentary elements as a feminist emergence of agency. The manuscript is composed of four sections, each an element in the inevitable breakdown of a love relationship: meeting, love-making, birth of a child, death. Quotes from various authors of anthropological and fictional texts begin each section to reinforce thematic structure in a process of unveiling the agency of the narrator. The poems are organized as a series, beginning and ending with sequence poems.
Date:
December 2000
Creator:
Skebe, Carolyn Alifair
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Effect of Attachment on Preschooler's Emotion Understanding
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Use of this item is restricted to the UNT Community
The purpose of this study was to identify the relationship between attachment and emotion understanding in preschoolers. Data was collected from 16 preschool children and their mothers recruited from a private learning center in a downtown metropolitan area. Attachment was measured by use of the Attachment Q-sort, 3.0 (Waters, 1995), while emotion understanding was assessed through use of Denham's (1986) affective perspective-taking task and interviews of children concerning naturally occurring emotions and emotion causes (Fabes et al., 1991). Results included a significant correlation (p < .05) between secure attachment and preschooler's ability to decipher the cause of another's emotion; however, a significant correlation was not found between secure attachment and preschooler's perspective-taking ability or ability to name other's emotions. Thus, conclusions about the impact of attachment upon emotion understanding were mixed, and more research on the subject was implicated.
Date:
December 2000
Creator:
Hernandez, Jennie R.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Logic Programming Tools for Dynamic Content Generation and Internet Data Mining
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Use of this item is restricted to the UNT Community
The phenomenal growth of Information Technology requires us to elicit, store and maintain huge volumes of data. Analyzing this data for various purposes is becoming increasingly important. Data mining consists of applying data analysis and discovery algorithms that under acceptable computational efficiency limitations, produce a particular enumeration of patterns over the data. We present two techniques based on using Logic programming tools for data mining. Data mining analyzes data by extracting patterns which describe its structure and discovers co-relations in the form of rules. We distinguish analysis methods as visual and non-visual and present one application of each. We explain that our focus on the field of Logic Programming makes some of the very complex tasks related to Web based data mining and dynamic content generation, simple and easy to implement in a uniform framework.
Date:
December 2000
Creator:
Gupta, Anima
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Master's Recital: 2011-06-10 - Bob True, clarinet
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Use of this item is restricted to the UNT Community
Recital presented at the UNT College of Music Voertman Hall in partial fulfillment of the Master of Music (MM) degree.
Date:
June 10, 2011
Creator:
True, Rob
Object Type:
Sound
System:
The UNT Digital Library
Master's Recital: 2012-06-11 - Chad Ostermiller, multiple woodwinds
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Use of this item is restricted to the UNT Community
Recital presented at the UNT College of Music Voertman Hall in partial fulfillment of the Master of Music (MM) degree.
Date:
June 11, 2012
Creator:
Ostermiller, Chad
Object Type:
Sound
System:
The UNT Digital Library
Masters Recital: 2012-10-15 - Tien-Jou Kao, flute
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Use of this item is restricted to the UNT Community
Recital presented at the UNT College of Music Voertman Hall in partial fulfillment of the Master of Music (MM) degree.
Date:
October 15, 2012
Creator:
Kao, Tien-Jou
Object Type:
Sound
System:
The UNT Digital Library