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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
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.
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
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
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
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.
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.
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
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
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.
System: The UNT Digital Library

Parts of Women

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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
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
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
System: The UNT Digital Library

The Effect of Attachment on Preschooler's Emotion Understanding

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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.
System: The UNT Digital Library

Logic Programming Tools for Dynamic Content Generation and Internet Data Mining

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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
System: The UNT Digital Library

Thermal, Electrical, and Structural Analysis of Graphite Foam

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A graphite foam was developed at Oak Ridge National Laboratory (ORNL) by Dr. James Klett and license was granted to POCO Graphite, Inc. to manufacture and market the product as PocoFoam™. Unlike many processes currently used to manufacture carbon foams, this process yields a highly graphitic structure and overcomes many limitations, such as oxidation stabilization, that are routinely encountered in the development of carbon foam materials. The structure, thermal properties, electrical resistivity, isotropy, and density uniformity of PocoFoam™ were evaluated. These properties and characteristics of PocoFoam™ are compared with natural and synthetic graphite in order to show that, albeit similar, it is unique. Thermal diffusivity and thermal conductivity were derived from Fourier's energy equation. It was determined that PocoFoam™ has the equivalent thermal conductivity of metals routinely used as heat sinks and that thermal diffusivity is as much as four times greater than pure copper and pure aluminum. SEM and XRD results indicate that PocoFoam™ has a high degree of crystalline alignment and near theoretical d spacing that is more typical of natural flake graphite than synthetic graphite. PocoFoam™ is anisotropic, indicating an isotropy factor of 0.5, and may yield higher thermal conductivity at cryogenic temperatures than is observed in …
Date: August 2001
Creator: Morgan, Dwayne Russell
System: The UNT Digital Library

Comparison of GPS Point Selection Methods for GIS Area Measurement of Small Jurisdictional Wetlands

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U.S. Army Corps of Engineers (USACE) regulates fill of jurisdictional waters of the United States including wetlands. Recent USACE regulations set a threshold of impacts to wetlands at one-half acre. Impact area can be determined by Global Positioning System (GPS) measurement of wetland boundary and Geographic Information System (GIS) calculation of impact area. GPS point selection methods include (1) equal time interval, (2) transect and (3) intuition. Four two-acre shapes were measured with each GPS method and brought into GIS for area calculation. Analysis of variance and Root Mean Square Error analyses determine that the transect method is an inferior point selection method in terms of accuracy and efficiency.
Date: August 2001
Creator: Shelton, Michael
System: The UNT Digital Library

Five Seasons: A composition for flutist and percussionist

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Five Seasons is a musical work for flute and percussion. The flutist alternately performs on the C flute with a B foot, alto flute, piccolo, and bass flute in each movement. The percussionist also plays different instruments in each movement: the vibraphone for Mid-Summer; the xylophone for Fall; the woodblock, temple block, and cowbells for Spring; the glockenspiel for Summer; and the marimba for Winter. The five movements of this work - Mid-Summer, Fall, Spring, Summer, and Winter - are based on a combination of Eastern performing practices with Western instruments. The musical characteristics are based on the techniques of fifteenth-century (e.g., isorhythmic technique) and twentieth-century Western music.
Date: August 2001
Creator: Kim, Chol-Ho
System: The UNT Digital Library

Home: A Memoir

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Home: A Memoir, a creative non-fiction thesis, is a memoir in the form of personal essays, each exploring some aspect of the meaning of home, how my sense of self has been formed by my relationship to home, and the inevitability of leaving home. Chapter I explores the nature of memory and of memoir, their relationship to each other and to truth, and how a writer's voice shapes memoir. Chapter II, “Paternity,” is an attempt to remember my father, resulting in renewed interest in his past and renewed awareness of his legacy. Chapter III, “Home,” is on the surface about my grandparents' house, but is really about my grandmother. Chapter IV, “Dixie,” is about my contradictory feelings for the South, and my eventual acceptance of the South's complexities.
Date: August 2001
Creator: Lovell, Bonnie Alice
System: The UNT Digital Library

Memory Management and Garbage Collection Algorithms for Java-Based Prolog

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Implementing a Prolog Runtime System in a language like Java which provides its own automatic memory management and safety features such as built--in index checking and array initialization requires a consistent approach to memory management based on a simple ultimate goal: minimizing total memory management time and extra space involved. The total memory management time for Jinni is made up of garbage collection time both for Java and Jinni itself. Extra space is usually requested at Jinni's garbage collection. This goal motivates us to find a simple and practical garbage collection algorithm and implementation for our Prolog engine. In this thesis we survey various algorithms already proposed and offer our own contribution to the study of garbage collection by improvements and optimizations for some classic algorithms. We implemented these algorithms based on the dynamic array algorithm for an all--dynamic Prolog engine (JINNI 2000). The comparisons of our implementations versus the originally proposed algorithm allow us to draw informative conclusions on their theoretical complexity model and their empirical effectiveness.
Date: August 2001
Creator: Zhou, Qinan
System: The UNT Digital Library

A Case Study of Leftist Terrorism in Turkey

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Change in government has characterized the development of most nations. Sometimes this change has been marked by continued evolution, in a peaceful attempt to move forward. Other times, change has been fraught with violent revolution and terrorism. This process has been the subject of much debate by political scientists and economic philosophers. Today, Turkey suffers from continued threats to its government through violent acts of terrorism conducted by various groups, expressing ideologies of leftist and rightist organizations, as well as ethnic and religious extremists. This thesis examines DHKP/C as the primary leftist revolutionary group effecting Turkey, exploring its historical background in Europe and the Middle East, as well as its philosophical link to Marxism. Further, this treatise discusses the implication of revolution and terrorism expressed by DHKP/C; and explores innovative and peaceful solutions, strategies, and techniques to be used by the police forces of Turkey in combating this group
Date: August 2001
Creator: Yayla, Ahmet
System: The UNT Digital Library

Sarah T. Hughes: Her Influence in Texas Politics

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Conservative males traditionally dominated Texas politics. In 1930, however, Sarah T. Hughes, a liberal woman from Maryland, began a spectacular career in state politics despite obstacles because of her gender and progressive ideas. First elected to the Texas Legislature in 1930, she remained active in politics for the next fifty years. Hard work, intelligence, and ability allowed her to form solid friendships with Texas's most powerful politicians. She became the first woman in Texas to hold a district judgeship, the first woman from Texas appointed to the federal bench, and the only woman to swear in a U.S. president. Hughes profoundly influenced state politics, challenging the long-standing conservative male domination. She helped to create a more diverse political field that today encompasses different ideologies and both genders.
Date: December 2000
Creator: Justiss, Charnita Spring
System: The UNT Digital Library

Effects of Reinforcement History on Stimulus Control Relations

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Ray (1969) conducted an experiment on multiple stimulus-response relations and selective attention. Ray's (1969) results suggested that stimulus-response relations function as behavioral units. McIlvane and Dube (1996) indicated that if stimulus-response relations are behavioral units the effects of environmental variables on stimulus-response relations should be similar to the effects of environmental variables on single response topographies. This experiment analyzed the effects of reinforcement history on the probability of stimulus-response relations with differing reinforcement histories. In separate conditions random-ratio schedules of reinforcement were contingent on each of four discriminated responses. To assess the effects of reinforcement, during test conditions stimuli controlling different topographies were present concurrently in composite form. Results show that reinforcement history affects the probability of each response topography and that the association between response topographies and their controlling stimuli tends to remain constant throughout variations in reinforcement probability.
Date: December 2000
Creator: Reyes, Fredy
System: The UNT Digital Library

Effect of Engineered Surfaces on Valve Performance

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Performance of air operated valves is a major maintenance concern in process industries. Anecdotal information indicates that reliability of some high maintenance valves has been improved by using an ion deposition process to achieve engineered surfaces on selected components. This project compared friction for various surface treatments of selected valve components. Results indicate valve performance may be slightly more consistent when an engineered surface is applied in the valve packing area; however surface treatment in this area does not appear to have a dominant affect on reducing valve friction. Results indicate a linear relation between stem friction and torque applied to packing flange nuts, and even after a valve is in service, controlled packing adjustments can be made without significantly changing valve stroke time.
Date: December 2000
Creator: Pope, Larry G.
System: The UNT Digital Library