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Masters No More: Abolition and Texas Planters, 1860-1890

Masters No More: Abolition and Texas Planters, 1860-1890

Date: December 2010
Creator: Ivan, Adrien D.
Description: This dissertation is a study of the effects of the abolition of slavery on the economic and political elite of six Texas counties between 1860 and 1890. It focuses on Austin, Brazoria, Colorado, Fort Bend, Matagorda, and Wharton Counties. These areas contain the overwhelming majority of Stephen F. Austin's "Old Three Hundred," the original American settlers of Texas. In addition to being the oldest settled region, these counties contained many of the wealthiest slaveholders within the state. This section of the state, along with the northeast along the Louisiana border, includes the highest concentration of Texas' antebellum plantations. This study asks two central questions. First, what were the effects of abolition on the fortunes of the planter class within these six counties? Did a new elite emerge as a result of the end of slavery, or, despite the liquidation of a substantial portion of their estates, did members of the former planter class sustain their economic dominance over the counties? Second, what were abolition's effects on the counties' prewar political elite, defined as the county judge? Who were in power before the war and who were in power after it? Did abolition contribute to a new kind of politician?
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Masturbation and Relationship Satisfaction

Masturbation and Relationship Satisfaction

Date: May 2013
Creator: Ramos, Marciana Julia
Description: Relationship satisfaction often declines after marriage or cohabitation and between 40-50% of marriages end in divorce. Furthermore, many couples who stay together report feeling unsatisfied in their relationships. Thus, it is important to examine factors that contribute to enduring and satisfying relationships. One factor that has been closely linked to relationship satisfaction is the sexual relationship of the couple. One aspect of the sexual relationship that has received little attention is masturbation. Although most psychologists hold positive views about masturbation, and recommend masturbation in many instances, the empirical data examining the association between masturbation and relationship satisfaction has mixed findings, with the majority of studies reporting a small negative relationship between these variables. The purpose of the present study was to further explore the association between masturbation and relationship satisfaction, focusing on possible moderators and mediators of this relationship including: masturbation guilt, openness with an individual's partner about masturbation, gender, object of arousal during masturbation, and reason for masturbating. Overall, masturbation frequency did not have a significant association with relationship satisfaction. However, the object of arousal during masturbation and openness about masturbation moderated the association between masturbation frequency and relationship satisfaction. Specifically, individuals who (a) used objects of arousal other ...
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Matador

Matador

Date: May 1998
Creator: Patino, Julio
Description: Matador is an opera scored for orchestra, mixed chorus and soloists (mezzosoprano, 3 tenors, 2 baritones). The work is in one act divided into two main sections. Each of these sections is divided into subsections. The libretto is aphoristic in nature and dictates the form of each of these subsections. The division into two parts also serves as a means to evoke a sense of hopelessness of emotions in the first and a transforming disposition that culminates in a jubilant song in the second.
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Material for Conversation in Spanish at the High School Level

Material for Conversation in Spanish at the High School Level

Date: 1944
Creator: Lee, Louise Cleveland
Description: This thesis consists of material for conversation in Spanish at the high school level.
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Materials Acquisition Cycles for Manufacturing Firms

Materials Acquisition Cycles for Manufacturing Firms

Date: May 1969
Creator: Thompson, George H. (George Hutchinson)
Description: The general purpose of this investigation was to identify general models of materials acquisition cycles for manufacturing firms as found in representative industries. The study further undertook to identify types of industrial situations in which the acquisition cycles display unique characteristics.
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Materials properties of hafnium and zirconium silicates: Metal interdiffusion and dopant penetration studies.

Materials properties of hafnium and zirconium silicates: Metal interdiffusion and dopant penetration studies.

Date: August 2002
Creator: Quevedo-Lopez, Manuel Angel
Description: Hafnium and Zirconium based gate dielectrics are considered potential candidates to replace SiO2 or SiON as the gate dielectric in CMOS processing. Furthermore, the addition of nitrogen into this pseudo-binary alloy has been shown to improve their thermal stability, electrical properties, and reduce dopant penetration. Because CMOS processing requires high temperature anneals (up to 1050 °C), it is important to understand the diffusion properties of any metal associated with the gate dielectric in silicon at these temperatures. In addition, dopant penetration from the doped polysilicon gate into the Si channel at these temperatures must also be studied. Impurity outdiffusion (Hf, Zr) from the dielectric, or dopant (B, As, P) penetration through the dielectric into the channel region would likely result in deleterious effects upon the carrier mobility. In this dissertation extensive thermal stability studies of alternate gate dielectric candidates ZrSixOy and HfSixOy are presented. Dopant penetration studies from doped-polysilicon through HfSixOy and HfSixOyNz are also presented. Rutherford backscattering spectroscopy (RBS), heavy ion RBS (HI-RBS), x-ray photoelectron spectroscopy (XPS), high resolution transmission electron microscopy (HR-TEM), and time of flight and dynamic secondary ion mass spectroscopy (ToF-SIMS, D-SIMS) methods were used to characterize these materials. The dopant diffusivity is calculated by modeling ...
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Materials properties of ruthenium and ruthenium oxides thin films for advanced electronic applications.

Materials properties of ruthenium and ruthenium oxides thin films for advanced electronic applications.

Access: Use of this item is restricted to the UNT Community.
Date: May 2006
Creator: Lim, ChangDuk
Description: Ruthenium and ruthenium dioxide thin films have shown great promise in various applications, such as thick film resistors, buffer layers for yttrium barium copper oxide (YBCO) superconducting thin films, and as electrodes in ferroelectric memories. Other potential applications in Si based complementary metal oxide semiconductor (CMOS) devices are currently being studied. The search for alternative metal-based gate electrodes as a replacement of poly-Si gates has intensified during the last few years. Metal gates are required to maintain scaling and performance of future CMOS devices. Ru based materials have many desirable properties and are good gate electrode candidates for future metal-oxide-semiconductor (MOS) device applications. Moreover, Ru and RuO2 are promising candidates as diffusion barriers for copper interconnects. In this thesis, the thermal stability and interfacial diffusion and reaction of both Ru and RuO2 thin films on HfO2 gate dielectrics were investigated using Rutherford backscattering spectrometry (RBS), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). An overview of Ru and RuO2/HfO2 interface integrity issues will be presented. In addition, the effects of C ion modification of RuO2 thin films on the physico-chemical and electrical properties are evaluated.
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Maternal employment: Factors related to role strain.

Maternal employment: Factors related to role strain.

Date: August 2009
Creator: LoCascio, Stephanie
Description: Past literature suggests that working mothers are at an increased risk for experiencing role strain compared to other employed adults. The current study investigated attitudes and beliefs of 783 working mothers of 15-month-old children using data from the National Institute of Child Health and Human Development's Study of Early Child Care and Youth Development. Working mothers' levels of role strain was associated with perceived social support, attitudes toward maternal employment, job and parental role quality, financial stress, and depression. Negative attitudes toward maternal employment predicted maternal separation anxiety, while positive attitudes toward employment did not affect separation anxiety. These findings have implications for the importance of decreasing role strain in working mothers.
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Math literacy: The relationship of algebra, gender, ethnicity, socioeconomic status, and AVID enrollment with high school math course completion and college readiness.

Math literacy: The relationship of algebra, gender, ethnicity, socioeconomic status, and AVID enrollment with high school math course completion and college readiness.

Date: August 2009
Creator: Edge, Donna L.
Description: The questions guiding this research seek to discover the factors that affect high school math course completion and college readiness in a Texas suburban public school district. The first research question examines the relationship between 8th grade completion of Algebra I and high school mathematics course taking patterns and college readiness. The second question evaluates the relationship between race, gender, socioeconomic status and enrollment in the Advancement Via Individual Determination (AVID) program to college math readiness and high school mathematics course completion. Participants included 841 high school graduates of the class of 2006; 76% of the graduates were White, 15% Hispanic and 7% African American. Twenty-three percent of students were economically disadvantaged and 46% of students completed Algebra I in 8th grade. Chi-square, Cramer's V, and multiple regression were conducted to evaluate possible relationships between variables. The Chi-square and Cramer's V showed statistically significant (p<.05) relationships between 8th grade algebra completion and both college readiness and high school math course completion. A significant statistical relationship was also found between college readiness and each of the independent variables, ethnicity, economic status, completion of 8th grade algebra and enrollment in AVID. The number of math courses completed in high school was statistically ...
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Mathematical Modeling of Charged Liquid Droplets: Numerical Simulation and Stability Analysis

Mathematical Modeling of Charged Liquid Droplets: Numerical Simulation and Stability Analysis

Date: May 2006
Creator: Vantzos, Orestis
Description: The goal of this thesis is to study of the evolution of 3D electrically charged liquid droplets of fluid evolving under the influence of surface tension and electrostatic forces. In the first part of the thesis, an appropriate mathematical model of the problem is introduced and the linear stability analysis is developed by perturbing a sphere with spherical harmonics. In the second part, the numerical solution of the problem is described with the use of the boundary elements method (BEM) on an adaptive mesh of triangular elements. The numerical method is validated by comparison with exact solutions. Finally, various numerical results are presented. These include neck formation in droplets, the evolution of surfaces with holes, singularity formation on droplets with various symmetries and numerical evidence that oblate spheroids are unstable.
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