Growth in the number of people living to very old age and progress in health care technology are creating important new challenges for our society. Among them is modern medicine's ability to extend some people's lives beyond the point where they are capable of making decisions or expressing their needs and desires, resulting in the very complex problem of knowing when to allow a person to die. In part, advance directives were created to solve this problem. Texas has been busy developing changes to existing state laws in an effort to create more "user-friendly" directives. This paper explores the history of advance directives, and discusses the details and nuances of the Texas Advance Directives Act of 1999.

Modernist painters such as Picasso, Ernst and Matisse were among others who incorporated what was then considered "primitive" art, mostly from Africa and Oceania, into their works. Prior to this, European artists had appropriated Greco-Roman themes and characters. These appropriated elements were consequently recreated without their cultural context and content, altered to reflect more current themes. In most cases, attention was directed toward the recreator, the author of the new work of art, not the creator of the artifact. In contrast, Post-Modern artists, including myself, have reproduced appropriated elements virtually unaltered as a way of denying authorship and emphasizing a more conceptual format. Appropriated imagery has been a tool for me in my work. Additionally, both figurative and abstract elements play significant roles since I consider juxtaposition of elements to be a strength. The challenge of fitting these elements together has enabled me to develop a style of painting that seems uniquely mine. The formal issues of style and content figure heavily in my endeavor to capture a moment in time; something lost forever except for its persistence in memory. These reflections are often imbued with personal icons, arcane text and symbolic drawing that weave in and out of the …

From its inception, the direction of The Fantasticks has been a fascinating and wonderful educational experience. When I first submitted my proposal to do the show, I had not intended for it to be my problem in lieu of a thesis, but rather a beginning directing project. I had no idea that the submission would meet with such opposition. I figured this was a lesson in "real life," for it is a widely recognized fact that getting a show produced requires much salesmanship and determination. When informed that I would be able to use this production for my master's thesis project, I was both delighted and frightened. After all, I had never directed a show before; and I wasn't really sure what I was getting myself into. In addition, I would be going about this project backwards. Usually, when such a project is contemplated, the thesis research is done first; and the direction of the show done after the completion of the written work. Although I did do my homework before directing The Fantasticks; because of time constraints, I was unable to delve as deeply into the subject as I would have liked. I have often stated that this, in …

Currently, there are more than 30 million refugees and internally displaced people in the world. Since the 1970s, after the Vietnam War, international organizations and many countries have supported refugees financially, however, they all have different definitions for a refugee. Refugees who desire peace or freedom and resettle in new countries have had remarkable economic, social, and educational achievement, especially Indochinese people in the US. However, refugees who flee from conflicts have often faced new conflicts in their host society. Both refugees and the host countries experience economic and social burden, however, refugees struggle and try to escape from their economic dependency from the local government. If refugee achievements continue, they could exceed the US educational and social norm in the future.

In recent developments of composite materials, scientists and engineers have come up with fibers as well as matrices for composites and techniques of blending high cost components with low cost materials. Thus, one creates cost effective composite materials that are as efficient as space age components. One of the major breakthroughs in this area is the innovation of molecular composites, specifically polymeric liquid crystals (PLCs). These materials have excellent mechanical properties such as tensile impact and bending strength. They have excellent chemical resistance, low thermal expansivity, and low flammability. Their low viscosity leads to good processability One major setback in using space age composite technology in commercial applications is the price. Due to the complexity of processing, the cost of space composite materials is skyrocketing. To take the same concept of space age composite materials to create a more economical substitute has become a serious concern among scientists and engineers around the world. The two issues that will be resolved in this thesis are: (1) the potential impact of using PLCs (molecular reinforcement) can have on macro reinforced (heterogeneous composite, HC) long fiber systems; and (2) how strategic placement of the reinforcing layers can affect the macromechanical properties of the …

This study focused on the enzyme, aspartate transcarbamoylase (ATCase) from A. hydrophila, a Gram-negative bacterium found in fresh water. The molecular mass of the ATCase holoenzyme from A. hydrophila is 310 kDa. The enzyme is likely composed of 6 catalytic polypeptides of 34 kDa each and 6 regulatory polypeptides of 17 kDa each. The velocity-substrate curve for A. hydrophila ATCase is sigmoidal for both aspartate and carbamoylphosphate. The Km for aspartate was the highest to date for an enteric bacterium at 97.18 mM. The Km for carbamoylphosphate was 1.18 mM. When heated to 60 ºC, the specific activity of the enzyme dropped by more than 50 %. When heated to 100 ºC, the enzyme showed no activity. The enzyme's activity was inhibited by ATP, CTP or UTP.

The purpose of this investigation is to explore the possibilities of manipulating clay in three distinct ways to effectively show that clay objects were at one time moist and pliable. The techniques used are faceting while wet, manipulating a variety of additions, applying different glazing techniques, and three separate firing methods. In addressing the problem, the following concerns were considered: (a) Which of the pieces made best expresses my aesthetic concerns? (b) Which firing method, oxidation, reduction or atmospheric, best illustrates these concerns? (c) Which glazing technique was most successful? In an attempt to explore and solve these problems, a series of twenty pieces were produced. A visual record of slides showing individual pieces were made to demonstrate the differences and similarities between firing methods.

The purpose of this study is to examine housing construction trends in the Denton Independent School District area for the next 5 years estimating impacts on the resulting school district enrollments. Combining enrollment data obtained from the DISD and housing data from the Denton County Appraisal District, it is possible to calculate enrollment multipliers for elementary, middle, and high school students based on predefined categories of single family home values. The study suggests that enrollment multipliers currently used by the DISD over estimate the number of students coming from new single family residences, especially at the elementary school level. Using data from real estate agents, builders, developers, and permitting boards, a map is created showing areas of the DISD that will likely see the largest gains in school-age children during the next 2 to 5 years.

Most of my childhood was spent in either the expansive suburbs of north Texas or on a farm in southern Oklahoma. The experience of growing up in these two regions has done much to shape my sense of aesthetic. From these early experiences, I have developed two completely divergent ideas of beauty which I've tried to reconcile in my artwork. The first influence is that of sparseness, simplicity and the commonplace. This influence comes from the emptiness of the suburban landscape, the sameness of its architecture and the need to find beauty in mundane things as a simple cure for boredom. The second major idea is centered around peculiarity, chaotic complexity and irrationality. This interest originally stems from early memories of my grandfather, whose experiences in Oklahoma during the Great Depression gave him the obsessive habit of never discarding anything for fear that he might need it some day. The complexity in meaning that comes from unfamiliar combinations has allowed the ideas in my work a kind of ambiguity that frees it from any singular reading. I think the content of my work could best be described as constructions of memories, experiences and influences. I never speak about any one …

In this experiment, fluorescent N- (1-pyrenyl) iodoacetamide modified the two reactive thiols, SH1 (Cys 707) and SH2 (Cys 697) on myosin to detect SH1-SH2 a -helix melting. The excimer forming property of pyrene is well suited to monitor the dynamics of the SH1 and SH2 helix melting, since the excimer should only form during the melted state. Decreased anisotropy of the excimer relative to the monomeric pyrene fluorescence is consistent with the disordering of the melted SH1-SH2 region in the atomic model. Furthermore, nucleotide analogs induced changes in the anisotropy of the excimer, suggesting that the nucleotide site modulates the flexibility of SH1-SH2 region.

Composed for soprano, tenor, and baritone voices, woodwind, percussion, and string instruments, Three Voices is a polyglotic work that includes German, Chinese, and Spanish texts. The texts are chosen from Brecht Bertolt's Das Schiff, Po Chu I's Lang T'ao Sha, and Frederico Garcia Lorcá's Mar. Significant features of the piece are 1) application of Chinese operatic singing methods to vocal material in the sections that use Chinese text, 2) use of western instruments to emulate the sound of certain Chinese instruments, and 3) employment of Sprechstimme and dramatically inflected speech to create theatrical effects and highlight the sections that use German and Spanish texts.

This thesis examines China's state-owned enterprise reform and financial reform in the last two decades. I characterize the progress of China's state-owned enterprises reform in two areas: privatization of small SOEs and mass layoffs. I argue that privatization rests on the political economy of China. I also discuss the evolution of the financial system and come up with some strategies of financial liberalization in China. Result from this study suggests that if the necessary reforms of the financial sector and state enterprises are effectively carried out, inevitably this will lead to a significantly slower rate of growth for a period of time. However, these reforms will provide the basis for a period of sustained growth in the long run.

Dimethoxynaphthalene (donor) and quinone (acceptor) have been chosen as a suitable redox pair and are bonded to either permethylated silane chains or corresponding permethylated alkyl chains to form Acceptor-(Bridge)-Donor molecules. The idea that the s-delocalization phenomenon of silane chains may greatly facilitate ET reactions will be tested. The starting material for the donor precursor, 4-(1,4-dimethoxynaphthyl)bromocyclohexane, was 1,4-naphthoquinone. After methylation and bromination, the Grignard reagent of the resulting bromide was reacted with cyclohexanedione, mono ethylene ketal. The resulting alcohol was changed to the donor precursor through the following functional group transformation steps: dehydration, hydrogenation, deketalization and bromination. 1,4-Dibenzyloxybromobenzene, the precursor for the acceptor, was synthesized from 1,4-hydroquinone through bromination and benzylation. The connection of the two precursors and either permethylated silane chains or permethylated alkyl chains will give the final target molecules for ET research. Progress on this is included.

Valve stem seal leakage is a major source of fugitive emissions, and controlling these emissions can result in added expense in leak detection and repair programs. Elastomeric O-rings can be used as valve stem seals, and O-ring manufacturers recommend lubrication of elastomeric seals to prevent damage and to assure proper sealing. In this research, a metallic coating was applied as a lubricant using a vacuum vapor deposition process to the surface of elastomeric valve stem seals. Valve stem leak measurements were taken to determine if the coated O-rings, alone or with the recommended lubrication, reduced valve stem seal leakage. This research determined that the metallic coating did not reduce valve stem leakage.

Haiku Seasons is a choral work that uses several haiku to portray moments in nature. Spread throughout the performance space, four choirs (SATB, 3/part) depict larger parts of the pastoral scene (i.e., mountains, the moon, etc.). Soloists depart from the choirs in order to perform solo, duo, trio, and quartet passages, which take place throughout the work. If enough singers are available, individual soloists may be used. The soloist groups display the more intimate moments of the scenes (i.e., sparrows, a blade of grass, etc.). The intent of Haiku Seasons is to create an image of nature isolated from human interaction. Thus, the image is a pastoral setting with many independent parts all coexisting in a relatively silent world. I combine aspects of tonality, time, space, and silence to create this image.

Limitations from reduced light and increasing water depth on Nelumbo lutea seedlings were determined in tank experiments. Survival was high in all tested light levels. Total biomass increased significantly with increasing light. Biomass allocation shifted significantly to root production between 3 and 6 weeks in the 10 and 24% levels. Survival decreased with increasing planting depth, and biomass of survivors reduced significantly between 0.5, 1.0, and 1.5 m depths. Nelumbo lutea and Myriophyllum spicatum populations were monitored for one season in a 0.7 ha pond to track changes in species dominance. Myriophyllum spicatum dominated early, and N. lutea dominated from July through October, suppressing M. spicatum at all depths. Competitive interactions between N. lutea and M. spicatum were investigated for two seasons in a container experiment situated within a pond. Where established, N. lutea dominated in the presence of M. spicatum. However, N. lutea could not be established in depths greater than 1 meter.

Distributed simulation is an enabling concept to support the networked interaction of models and real world elements that are geographically distributed. This technology has brought a new set of challenging problems to solve, such as Data Distribution Management (DDM). The aim of DDM is to limit and control the volume of the data exchanged during a distributed simulation, and reduce the processing requirements of the simulation hosts by relaying events and state information only to those applications that require them. In this thesis, we propose a new DDM scheme, which we refer to as dynamic grid-based DDM. A lightweight UNT-RTI has been developed and implemented to investigate the performance of our DDM scheme. Our results clearly indicate that our scheme is scalable and it significantly reduces both the number of multicast groups used, and the message overhead, when compared to previous grid-based allocation schemes using large-scale and real-world scenarios.

This thesis explores the relationship of the Sermo Angelicus of St. Birgitta of Sweden, written in the fourteenth century, with the Nativity/Concert of Angels panel of the Isenheim Altarpiece, painted by Matthias Grunewald in 1514 for a hospital and monastery run by the Antonite Order. Taking into consideration the context of the altarpiece, this thesis analyzes its iconography in relation to specific passages from the Sermo Angelicus, suggesting that the text was a possible source used by the Antonites in the Nativity/Concert of Angels panel. By doing so, parallel themes of salvation in both the text and the panel are discovered that in turn relate to the altarpiece in its entirety and present a message fashioned specifically for those patients at the hospital at Isenheim that viewed the altarpiece.

This project explores the representational strategies used to depict a gay male/straight female dyad across a variety of popular media. The study problematizes and critically evaluates how the narrativization of the dyad both challenges and reinforces stereotypes of gay men and at the same time circulates a troubling image of femininity in the figure of the straight woman. This line of argument is extended to the context of "Lifestyle Television" to demonstrate how the dyad implicitly structures two particular programs. It is suggested that the prevalence of the dyad is in part indicative of an assimilation of a particular gay identity into mainstream culture. The ideological implications of the dyad are discussed throughout this thesis.

This study investigated the effects of unit price structure, unit price descriptions, and unit price sequence on the demand for money in humans. Six groups of 3 participants solved multiplication problems in exchange for money under various unit prices. Consumption of money decreased as the unit price increased across all conditions. However, the data also showed that: (a) fixed price structures produced slightly more elastic demand than did variable price structures, (b) price descriptions produced more elastic demand under variable price structures but had little or no effect under fixed price structures, and (c) the alternate sequence used with fixed price structures produced slightly more elastic demand.

The present study consists of two experiments that analyze the effects of high and low densities of reinforcemnt on the maladaptive behaviors of a 9 year old girl with autism. The first experiment investigates the isolated effects of density of reinforcement on the frequency of maladaptive behaviors during a motor imitation teaching task. High densities of reinforcement produced fewer occurrences of maladaptive behavior than low densities of reinforcement. Experiment 2 analyzes the effects of density of reinforcement during the same teaching tasks as in experiment 1 on maladaptive behavior, task accuracy, prompt resistance, and language. Maladaptive behavior did not recur during experiment 2. High density of reinforcement conditions during the second experiment showed a positive effect on the accuracy of responding and compliance with prompts.

During the presidential contest of 1884, Republicans used singing as a campaign tactic at rallies, meetings, and parades. Their songs may be divided into several categories, such as rally songs, songs of praise for the party and its candidate, "bloody shirt" songs, mudslinging songs, and issue-based songs. Songs provide a perspective on the overall tenor of the campaign, while a lack of songs on certain topics, such as temperance, reflects the party's reluctance to alienate voters by taking a strong stand on controversial issues. Although the campaign has often been called one of the dirtiest in American history, this negativity is not reflected in the majority of the songs.

The purpose of this investigation was to assess the association between body mass index as well as race/ethnicity and established correlates of disordered eating including drive for thinness, body dissatisfaction, bulimia, dietary restraint and social physique anxiety in male and female college students. Difference between actual, desirable and perceived body weight was also assessed. ANOVA suggested that as actual body mass index increased, in general, attitudes and behavior toward weight, body shape and eating increased. A two-tailed t-test suggested that males and females differed significantly with regards to attitudes and behavior toward weight body shape and eating. ANOVA indicated that little to no association existed between race/ethnicity and established correlates of disordered eating.

Female archetypes reflect a social construction of reality, expressing expected modes of behavior, beliefs, and assumptions about women and are reinforced by repetition of common patterns and themes. Often female archetypes take on the physical characteristics of animals, commune with nature, engage in sexual promiscuity, and possess special powers to bewitch and control men into doing their bidding. Four prevalent archetypes include: the Predatory Woman, who with her bestial nature becomes the hunter of men; the Sacrificial Woman, who dutifully negates herself for the sake of men; the Bad Mother, who is cold, unnatural, and challenges men; and les enfants terrible seductive girl-women who at once tempt and torment men. This research traces the development and evolution of female archetypes and explores how images of women, nature, sexuality, and evil are structured within a cultural framework of Western tradition: myths and folktales, religious, philosophical, and scientific works, and film.