UNT Theses and Dissertations - 9,678 Matching Results

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Post-Traumatic Symptomatology in the Luby's Shooting

Description: The role of exposure to a human-made disaster and the subsequent development of post-traumatic stress reactions were examined. Subjects included 49 males and 30 females who were variously exposed to the Luby's shooting incident in Killeen, Texas in October of 1991. Post-traumatic stress symptomatology was measured by the SCL-90R. Exposure was operationalized by using a scenario-rating scheme with independent raters estimating each subject's level of exposure. A regression and commonality analysis revealed that exposure is an important predictor in post-traumatic symptomatology. Premorbid functioning and gender were also found to play important roles, with females expressing higher levels of symptomatology.
Date: December 1993
Creator: Adams, Pam, 1964-
Partner: UNT Libraries

The Development and Application of a Rating Scale for the Evaluation of Business Arithmetic Textbooks

Description: The purpose of this study was to prepare a rating scale to be applied as an objective basis in the selection of business arithmetic textbooks. After the rating scale was developed, it was then applied to a number of recently published texts to demonstrate its use and practical value.
Date: 1941
Creator: Adams, Raymond
Partner: UNT Libraries

Dmitri Shostakovich and the Fugues of Op. 87: A Bach Bicentennial Tribute

Description: In 1950-51, for the bicentennial of the death of J. S. Bach, Dmitri Shostakovich wrote his collection of Twenty-four Preludes and Fugues, Op. 87. This thesis is a study of the fugal technique of Shostakovich as observed in Op. 87, in light of the fugal style of Bach as observed in The Well-Tempered Clavier, Volume One. Individual analyses of each of the twenty-four Shostakovich pieces yield the conclusion that Op. 87 is an emulation of Bachian fugal methods as observed in The Well-Tempered Clavier, Volume One.
Date: August 1981
Creator: Adams, Robert M. (Robert Michael)
Partner: UNT Libraries

A Proposed Industrial Arts General Shop Curriculum for Pauline G. Hughes Middle School, Burleson Independent School District

Description: This study was made to gather data and information to aid the Burleson Independent School District in initiating an industrial arts general shop program in the Pauline G. Hughes Middle School. The data and information were obtained from the Texas Education Agency, the Burleson Independent School District records, the vocational director, the assistant superintendent, a questionnaire, and the Brodhead-Garrett 1976-1977 Catalog. The majority of the general shop programs in the north Texas area conduct classes five days a week for fifty-five minutes a day and accommodate twenty-four students per class. Furthermore, the majority of the general shop programs offer three units of instruction per year and teach one unit of instruction each quarter.
Date: May 1978
Creator: Adams, William Leroy.
Partner: UNT Libraries

The Effect of Presence of Support Systems and Level of Agreement on the Performance of Work Groups

Description: In the study of team-based organizations most of the research has focus on the internal make-up and structure of teams. Recently there has been more interest in the effects that environment has on teams. With this new focus Support Systems in organizations have become an area of interest. Examining the perceptions of workers with respect to support systems of organizations could give insight into performance. This study specifically examines the interaction between a team's shared perception of the support in their environment and the level of support in their environment. The interaction between the two does seem to have a strong relationship with perceived performance. How do the two concepts interact, and what does this mean for organizational designers? Both questions are discussed.
Date: May 1999
Creator: Adcock, John R. (John Roger)
Partner: UNT Libraries

"Fools for Christ": An Examination of the Ministerial Call in Three Novels by William Golding

Description: This thesis examines the ministerial call in three novels by William Golding, specifically The Spire, Darkness Visible, and Rites of Passage. The central character of each novel, a Christian minister, has a vision, or series of visions, which dominates his life. The call and vision(s) of Golding's ministers are examined in light of Jacques Ellul's The Humiliation of the Word, a work examining the differences between the word and the image. The ministerial call, in this thesis, is linked to Ellul's ideas about the word; the vision, in this thesis, is linked to Ellul's ideas of the image. As a result of following their vision(s) rather than their call, the ministers fail, and their lives end in despair and ruin.
Date: December 1987
Creator: Adcox, John Roland
Partner: UNT Libraries

The Effects of Music and Operant Conditioning on Gross Motor Activity of Profound Mental Retardates

Description: It has not yet been demonstrated that music can be used therapeutically with profoundly retarded children. One way these children might be helped to respond to music, and therapeutically benefit from it, would be to use operant conditioning in an effort to enhance gross motor activity and then progressively shape responses until more complex behavior patterns are formed. Once these children can respond motorically in the presence of musical stimuli, continuation of responding may be possible by pairing motor activity with musical stimuli. This experiment investigated the effects of operant conditioning and music on the motor activity of profoundly retarded children in an effort to determine the therapeutic usefulness of music with such children.
Date: January 1968
Creator: Addison, Max R.
Partner: UNT Libraries

The Development of Radio Broadcasting in Nigeria, West Africa

Description: The purpose of this study is to set forth the history of radio in Nigeria. Chapters explore the history of Nigeria, the history of Nigerian radio, and the present structure of Nigerian radio. In a final chapter, specific historical factors are isolated that have made Nigerian radio what it is today. The study concludes that the present structure of Nigerian radio is a direct product of the peculiar history of Nigeria as a former British Colony. Little can be done to solve the problems of Nigerian radio unless the problems of Nigeria itself are first solved.
Date: December 1974
Creator: Adejunmobi, Jonathan Adegoke
Partner: UNT Libraries

Attitudes Toward Increased Government Control of Land Use

Description: This investigation is concerned with perceived detrimental aspects of land use and the desirability of extending government participation in land use goals. Interviews with 179 persons were conducted. The data reveal a possible direct relationship between social class and the acceptance of land use and economic controls. The project endorses the following proposals: Local regulations should require housing developers to provide the streets and utilities and to dedicate land for parks and schools. Taxation should be used as a regulatory tool for the attainment of public policy objectives. A federal commission is needed to encourage comprehensive land management programs. It is also suggested that future land management questionnaires should use random samples and ask questions about specific land use problems.
Date: May 1975
Creator: Adeler, Harold C.
Partner: UNT Libraries

Qos Aware Service Oriented Architecture

Description: Service-oriented architecture enables web services to operate in a loosely-coupled setting and provides an environment for dynamic discovery and use of services over a network using standards such as WSDL, SOAP, and UDDI. Web service has both functional and non-functional characteristics. This thesis work proposes to add QoS descriptions (non-functional properties) to WSDL and compose various services to form a business process. This composition of web services also considers QoS properties along with functional properties and the composed services can again be published as a new Web Service and can be part of any other composition using Composed WSDL.
Date: August 2013
Creator: Adepu, Sagarika
Partner: UNT Libraries

Determining the Emissivity of Roofing Samples: Asphalt, Ceramic and Coated Cedar

Description: The goal is to perform heat measurements examine of selected roofing material samples. Those roofing materials are asphalt shingles, ceramics, and cedar. It’s important to understand the concept of heat transfer, which consists of conduction, convection, and radiation. Research work was reviewed on different infrared devices to see which one would be suitable for conducting my experiment. In this experiment, the main focus was on a specific property of radiation. That property is the emissivity, which is the amount of heat a material is able to radiate compared to a blackbody. An infrared measuring device, such as the infrared camera was used to determine the emissivity of each sample by using a measurement formula consisting of certain equations. These equations account for the emissivity, transmittance of heat through the atmosphere and temperatures of the samples, atmosphere and background. The experiment verifies how reasonable the data is compared to values in the emissivity table. A blackbody method such as electrical black tape was applied to help generate the correct data. With this data obtained, the emissivity was examined to understand what factors and parameters affect this property of the materials. This experiment was conducted using a suitable heat source to heat up the material samples to high temperature. The measurements were taken during the experiment and displayed by the IR camera. The IR images show the behavior of surface temperatures being distributed throughout the different materials. The main challenge was to determine the most accurate emissivity values for all material samples. The results obtained by the IR camera were displayed in figures and tables at different distances, which was between the heap lamp and materials. The materials exhibited different behaviors in temperature and emissivity at certain distances. The emissivity of each material varied with different temperatures. The results led to suggestions ...
Date: December 2015
Creator: Adesanya, Oludamilola
Partner: UNT Libraries

An Analysis of Location and Offender Characteristics for Motor Vehicle Theft in Texas from 2001 to 2005

Description: Motor vehicle theft is the costliest property crime in the United States equaling billions of dollars in losses each year. Despite law enforcement success in decreasing the rate of motor vehicle theft in recent years, the actual number of thefts has increased. It is vital for law enforcement agencies to know who is committing motor vehicle theft and where vehicles are being stolen. This study answers these questions by examining offender demographic characteristics and the location types most targeted for motor vehicle theft in Texas from 2001 to 2005. The state of Texas was chosen because Texas has continually been ranked second in the Federal Bureau of Investigation's Uniform Crime Report for the number of reported incidents of motor vehicle theft in the United States.
Date: December 2007
Creator: Adger, Katherine
Partner: UNT Libraries

Knowledge Based System and Decision Making Methodologies in Materials Selection for Aircraft Cabin Metallic Structures

Description: Materials selection processes have been the most important aspects in product design and development. Knowledge-based system (KBS) and some of the methodologies used in the materials selection for the design of aircraft cabin metallic structures are discussed. Overall aircraft weight reduction means substantially less fuel consumption. Part of the solution to this problem is to find a way to reduce overall weight of metallic structures inside the cabin. Among various methodologies of materials selection using Multi Criterion Decision Making (MCDM) techniques, a few of them are demonstrated with examples and the results are compared with those obtained using Ashby's approach in materials selection. Pre-defined constraint values, mainly mechanical properties, are employed as relevant attributes in the process. Aluminum alloys with high strength-to-weight ratio have been second-to-none in most of the aircraft parts manufacturing. Magnesium alloys that are much lighter in weight as alternatives to the Al-alloys currently in use in the structures are tested using the methodologies and ranked results are compared. Each material attribute considered in the design are categorized as benefit and non-benefit attribute. Using Ashby's approach, material indices that are required to be maximized for an optimum performance are determined, and materials are ranked based on the average of consolidated indices ranking. Ranking results are compared for any disparity among the methodologies.
Date: August 2016
Creator: Adhikari, Pashupati Raj
Partner: UNT Libraries

Solvent Effects and Bioconcentration Patterns of Antimicrobial Compounds in Wetland Plants

Description: This study looked at effects of organic solvents dimethylsulfoxide, dimethylformamide and acetone at 0.01%, 0.05% and 0.1% concentration on germination and seedling development wetland plants. Even at 0.01% level, all solvents affected some aspect of seed germination or seedling growth. Acetone at 0.01% was least toxic. Root morphological characteristics were most sensitive compared to shoot morphological characteristics. This study also looked at bioconcentration patterns of antimicrobial compounds triclosan, triclocarban and methyl-triclosan in wetland plants exposed to Denton Municipal Waste Water Treatment Plant effluent. Bioconcentration patterns of antimicrobial compounds varied among species within groups as well as within organs of species. The highest triclocarban, triclosan and methyltriclosan concentration were in shoot of N. guadalupensis, root of N. lutea and in shoots of P. nodous respectively.
Date: May 2011
Creator: Adhikari, Sajag
Partner: UNT Libraries

Presence of Wolbachia, A Potential Biocontrol Agent: Screening for Vertebrate Blood Meal Source and West Nile Virus in Mosquitoes in the North Texas Region

Description: West Nile virus (WNV) is a geographically endemic mosquito-borne flavivirus that has spread across the United States infecting birds, mosquitos, humans, horses and other mammals. The wide spread nature of this virus is due to the ability of the mosquito vector to persist in broad, ecological diverse environments across the United States. In this study, mosquito populations in North Texas region were sampled for detection of Wolbachia, blood meal source, and WNV. The ultimate goal of this study was to examine the potential of a biocontrol agent, Wolbachia sp. that colonizes the hindgut of various insects, including mosquitos, as a natural means to interrupt virus transmission from mosquitos to other hosts, including humans. In Australia, Wolbachia sp. from fruit flies (Drosophila melanogaster) have been successfully used to block transmission of a similar pathogenic virus from mosquitos responsible for transmission of Dengue fever. Here, mosquitoes were collected using CDC style Gravid Traps in Denton, Texas, from October 2012 through September 2014. Collected mosquitoes were identified, sexed, and categorized as to the amount of host blood in their alimentary system using a Zeiss Axio Zoom microscope (Carl Zeiss Microscopy, LLC, Thornwood, NY). Culex quinquefaciatus was the dominant blood engorged species collected. Smaller populations of Culex tarsalis and Aedes albopictus, another known vector for WNV were also collected. Mosquito larva were also collected from the UNT water research field station and reared to adults. Cx. tarsalis was the dominant mosquito taken from this habitat. Samples of Cx. quinquefasciatus, Cx. tarsalis and A. albopictus were analyzed for Wolbachia sp. and to identify host blood in the mosquito alimentary system. Total DNA extraction from the pool of mosquito samples was by both commercially available DNA extraction kits (Qiagen, Valencia, CA) and salt extraction technique. Polymerase chain reaction (PCR) was used to amplify and identify Wolbachia ...
Date: August 2016
Creator: Adiji, Olubu Adeoye
Partner: UNT Libraries

Children of Battered Women: Personality Patterns and Identification

Description: Mental health professionals have observed that children who witness interparental violence frequently display either an affrontive, demanding personality style, or a passive, compliant style. The prevalence of these personality types and their relation to identification, stress, and other variables was evaluated in a sample of 40 children (age range = 6 - 12 years old) who have witnessed parental spouse abuse. Children completed the Children's Personality Questionnaire and the Parental Identification Questionnaire. Mothers completed the Life Experiences Survey. Independent ratings of the children's personality were made. The results validated the existence of these two personality styles among both male and female witnesses, and supplied evidence for their relation to paternal identification, familial instability, and parental ineffectualness. The implications of these findings for assessment and intervention are discussed.
Date: December 1985
Creator: Adler, Jeffrey Steven
Partner: UNT Libraries

Ecological Factors Related to Juvenile Delinquency

Description: The purpose of this study is to discover the spatial distribution of adjudicated delinquents and to analyze the relationship of these delinquents to a distribution of other attributes of population aggregates. Specifically, this study focuses on the relationship in Fort Worth between the social and economic data of a specific zone. Chapter I and III of this study discuss previous ecological studies and their findings. Furthermore, possible restriction to previous studies are brought out and the design for this study is developed. Chapter III presents the methodology design used in the project. Chapter IV and V present findings of this study and discuss implication drawn from these findings. Moreover, statistically significant results are explained with regard to present sociological knowledge and future research.
Date: May 1975
Creator: Adrian, Larry Michael
Partner: UNT Libraries

A Preliminary Investigation of the Relationships Among Life Satisfaction, Status Inconsistency, and Selected Demographic Variables

Description: The purpose of this research is to investigate the relationships among life satisfaction, status inconsistency, marital status, sex, race, and age. Status inconsistency is determined through a comparison of the status indicators of education, occupation, and income. Life satisfaction is determined by the responses to five areas of satisfaction which are presented in the 1976 General Social Survey conducted annually by the National Opinion Research Center (NORC). The five satisfaction variables are factor analyzed to assure the appropriateness of their use in the construction of the life satisfaction index. Analysis of the data consists of the use of chi-squares, Cramer's V, and Kendall's tau-b. Findings are reported and suggestions are presented for future research.
Date: December 1979
Creator: Agamau, Terry Jeane Nashert
Partner: UNT Libraries