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  Partner: UNT Libraries
 Collection: UNT Theses and Dissertations
Worker-initiated violence: Prevention strategies in park and recreation departments

Worker-initiated violence: Prevention strategies in park and recreation departments

Date: December 2002
Creator: Hutchinson, Tamara Germaine
Description: Workplace violence infects many organizations. This descriptive study assesses the extent to which Texas park and recreation departments institute policies and procedures for preventing worker-initiated violence. Thirty directors from local park and recreation departments were interviewed by telephone and asked to identify whether their departments used specific prevention strategies to thwart instances of worker-initiated violence. The findings reveal few prevention strategies being used and suggest a need for park and recreation managers to increase their awareness and take a more proactive approach to violence prevention.
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John Quincy Adams and Slavery

John Quincy Adams and Slavery

Date: August 1973
Creator: Rosendahl, Nancy Diane Boydston
Description: The purpose of this thesis is to provide for the reader an isolated study based on a thorough research of the Adams Papers, Congressional Globe, and American Foreign Relations Papers, of Adams' views on slavery, both legal and moral.
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Mark Twain's Southern Trilogy: Reflections of the Ante-Bellum Southern Experience

Mark Twain's Southern Trilogy: Reflections of the Ante-Bellum Southern Experience

Date: August 1973
Creator: Robinson, Jimmy Hugh
Description: The purpose of this study is to explore Mark Twain's involvement with the southern ante-bellum experience as reflected in his Southern Trilogy, The Adventures of Tom Sawyer, The Adventures of Huckleberry Finn (Tom Sawyer's Comrade), and Pudd'nhead Wilson. He came to denounce the South more and more vehemently in these novels, and each occupies a critical position in his artistic and philosophical growth.
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Nodal Resistance Measurement System

Nodal Resistance Measurement System

Access: Use of this item is restricted to the UNT Community.
Date: May 2005
Creator: Putta, Sunil Kumar
Description: The latest development in the measurement techniques has resulted in fast improvements in the instruments used for measurement of various electrical quantities. A common problem in such instruments is the automation of acquiring, retrieving and controlling the measurements by a computer or a laptop. In this study, nodal resistance measurement (NRM) system is developed to solve the above problem. The purpose of this study is to design and develop a compact electronic board, which measures electrical resistance, and a computer or a laptop controls the board. For the above purpose, surface nodal points are created on the surface of the sample electrically conductive material. The nodal points are connected to the compact electronic board and this board is connected to the computer. The user selects the nodal points, from the computer, between which the NRM system measures the electrical resistance and displays the measured quantity on the computer.
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Piezoresistive Polyvinylidene Fluoride/Carbon Filled Nanocomposites

Piezoresistive Polyvinylidene Fluoride/Carbon Filled Nanocomposites

Date: May 2011
Creator: Vidhate, Shailesh
Description: This thesis examines the value of using dispersed conductive fillers as a stress/strain sensing material. The effect of the intrinsic conductivity of the filler on the ability to be effective and the influence of filler concentration on the conductivity are also examined. To meet these objectives, nanocomposites of polyvinylidene fluoride (PVDF) with carbon nanofibers (CNFs) and carbon nanotubes (CNTs) were prepared by melt-blending using a twin screw extruder. Since PVDF has a potential to be piezoresistive based on the type of crystalline phase, the effect of CNFs on PVDF crystallinity, crystalline phase, quasi static and dynamic mechanical property was studied concurrently with piezoresponse. Three time dependencies were examined for PVDF/CNTs nanocomposites: quasi-static, transient and cyclic fatigue. The transient response of the strain with time showed viscoelastic behavior and was modeled by the 4-element Burger model. Under quasi-static loading the resistance showed negative pressure coefficient below yield but changed to a positive pressure coefficient after yield. Under cyclic load, the stress-time and resistance-time were synchronous but the resistance peak value decreased with increasing cycles, which was attributed to charge storage in the nanocomposite. The outcomes of this thesis indicate that a new piezoresponsive system based on filled polymers is a viable ...
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A Real-Time Electronic Sound Analysis System with Graphical User Interface

A Real-Time Electronic Sound Analysis System with Graphical User Interface

Date: August 2011
Creator: Brgulja, Amir
Description: Noise-induced hearing loss is a serious problem common to musical environments. Current dosimetry technology is primarily designed for industrial environments and not suited for musical settings. At present, there are no government regulations that apply to the educational music environment as it relates to monitoring and prevention of hearing loss. Also, no system exists than can serve as a proactive tool in observation and reporting of sound exposure levels with the goal of hearing conservation. Newly proposed system takes a software based approach in designing a proactive dosimetry system that can assess the risk of sound noise exposure. It provides real-time feedback trough a graphical user interface that is capable of database storage for further study.
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A Study of Laser Direct Writing for All Polymer Single Mode Passive Optical Channel Waveguide Devices

A Study of Laser Direct Writing for All Polymer Single Mode Passive Optical Channel Waveguide Devices

Date: May 2008
Creator: Borden, Bradley W.
Description: The objective of this research is to investigate the use of laser direct writing to micro-pattern low loss passive optical channel waveguide devices using a new hybrid organic/inorganic polymer. Review of literature shows previous methods of optical waveguide device patterning as well as application of other non-polymer materials. System setup and design of the waveguide components are discussed. Results show that laser direct writing of the hybrid polymer produce single mode interconnects with a loss of less 1dB/cm.
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The role of common stimulus functions in the development of equivalence classes.

The role of common stimulus functions in the development of equivalence classes.

Date: August 2004
Creator: MacIver, Kirsty
Description: College students were exposed to training designed to teach nine simple discriminations, such that sets of three arbitrary visual stimuli acquired common functions. For seven of eight participants, three 3-member contingency classes resulted. When the same stimuli were presented in a match-to-sample procedure under test conditions, four participants demonstrated equivalence-consistent responding, matching all stimuli from the same contingency class. Test performance for two participants was systematically controlled by other variables, and for a final participant was unsystematic. Exposure to a yes/no test yielded equivalence-consistent performance for one participant where the match-to-sample test had not. Implications for the treatment of equivalence as a unified, integrated phenomenon are discussed.
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A Stimulus Control Analysis of Imprinting in a Human-Reared Pigeon

A Stimulus Control Analysis of Imprinting in a Human-Reared Pigeon

Date: August 2011
Creator: Varnon, Christopher A.
Description: Events that occur early in the life of birds greatly influence social and sexual preferences throughout the course of life. Traditionally, this is explained by a learning process known as imprinting. Young birds are thought to imprint to early stimuli, causing the development of permanent preferences for those stimuli. In the present study, imprinting is examined with respect to behaviors of an adult human-reared pigeon in several conditions. The subject was either presented with no stimulus, a conspecific stimulus, a novel stimulus, a human stimulus, or the human and novel stimuli simultaneously. Several phases within these conditions were employed to pinpoint the variables that produced the most social and sexual behavior. The results showed that while some conditions produced unclear behavior, other conditions produced very clear indications of sexual preference for humans and fear of conspecifics. The results suggest that the concept of imprinting may not be needed to explain the sexual preference of the subject, and that operant contingencies may play a large role in sexual behavior.
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The effects of a college human sexuality course on students' sexual knowledge, attitude, and behavior.

The effects of a college human sexuality course on students' sexual knowledge, attitude, and behavior.

Date: December 2001
Creator: Smith, Jolene A.
Description: Using an experimental-comparison group design, data were collected at the beginning and end of a semester to assess the effect of a human sexuality course on students' sexual knowledge, sexual attitude, and sexual behaviors. Data analysis by t-tests showed statistical differences between the experimental and comparison group only on sexual knowledge scores ( p < .001), with the experimental group scoring higher. T-tests showed statistical difference between males and females in sexual attitude (p< .001) and sexual behavior (p< .001) with women scoring higher than men in the experimental group, and also when experimental and control groups were combined. Although not statistically significant, women scored higher in sexual knowledge than males.
Contributing Partner: UNT Libraries