We examined CVD grown polycrystalline diamond films having different methane concentrations to detect defects and study the possible correlation between the methane concentration used during the growth process and the defect density. SEM and Raman results show that the amorphous and sp2 carbon content of the films increases with methane concentration. Furthermore, photoelectric emission from diamond is confirmed to be a two-photon process, hence the electrons are emitted from normally unoccupied states. We found that the photoelectric yield, for our samples, decreases with the increase in methane concentration. This trend can be accounted for in two different ways: either the types of defects observed in this experiment decrease in density as the methane concentration increases; or, the defect density stays the same or increases, but the increase in methane concentration leads to an increase in the electron affinity, which reduces the overall photoelectric yield.

This thesis covers a series of etchings created between 1998 and 2000 in completion of the requirements for graduation. The paper covers the origins and implications of the symbology within the artwork as well as the natural settings displayed. It also speaks of the mythos of art and symbols, as well as my strategy in Art making.

This study proposes a method for measuring the regional economic impact of a relatively new sport: stock car racing. Although research on the economic impact of most major league sports is abundant, little has been written on stock car racing. The purpose of this paper is to estimate, through a simulation, the regional economic impact of Texas Motor Speedway. The study finds that the Texas Motor Speedway boosted economic activity by $87,179,367 in 1998 from racetrack operations, and supported 5,300 jobs paying $22,293,135 in earnings. In addition, expenditures by speedway visitor from outside the region are estimated at $22,985,200, further increasing the total local economic activity by $49 million.

This study examines the fiscal impact the Ballpark in Arlington has on the City of Arlington. Many individuals argue that the new Ballpark in Arlington would create numerous new jobs and bring added economic development to the city, thus increasing tax revenues. An interrupted time-series approach was used to determine whether or not the new ballpark has a measurable impact on retail sales tax receipts in the City of Arlington. Based on sales tax rebate data obtains from the Texas Comptroller's Office, the study found no significant increase in sales tax receipts for Arlington during the baseball season. However, this is not to say that the Ballpark in Arlington has no impact on total local economic activity. These findings do call into question, as other studies have, the relative fiscal value of publicly-sponsored professional sports venues.

Streaming multimedia content with UDP has become popular over distributed systems such as an Internet. This may encounter many losses due to dropped packets or late arrivals at destination since UDP can only provide best effort delivery. Even UDP doesn't have any self-recovery mechanism from congestion collapse or bursty loss to inform sender of the data to adjust future transmission rate of data like in TCP. So there is a need to incorporate various control schemes like forward error control, interleaving, and congestion control and error concealment into real-time transmission to prevent from effect of losses. Loss can be repaired by retransmission if roundtrip delay is allowed, otherwise error concealment techniques will be used based on the type and amount of loss. This paper implements the interleaving technique with packet spacing of varying interleaver block size for protecting real-time data from loss and its effect during transformation across the Internet. The packets are interleaved and maintain some time gap between two consecutive packets before being transmitted into the Internet. Thus loss of packets can be reduced from congestion and preventing loss of consecutive packets of information when a burst of several packets are lost. Several experiments have been conducted with …

Policy makers and households are concerned about the impact of rising energy prices on low-income households. In a trend starting in the 1970s, low-income households are spending an increasingly disproportionate share of their income on home energy. The burden on a household imposed by energy prices can be analyzed through four factors: energy price, energy consumption, income level, and level of assistance provided to help with the costs of energy. The combination of these factors indicates that the energy burden is continuing to be disproportionately large for the nation's poor. Therefore, policy makers make further efforts to alleviate this burden by modifying energy pricing regulation.

The inspiration for my undergraduate body of work is derived from my fascination with Henri Matisse, Jacob Lawrence, and the Impressionists. I suddenly became captivated with the Impressionist movement and the independence of abstraction. I set into motion a series of paintings and drawings featuring random African-Americans and African society representatives in vibrant color and abstracting forms, and was specifically concerned with altering the form outside of the realistic area. While in graduate school, I began to think about how the transformation from realism to abstraction combined with the conception of mortal to the immortal. I worked through ideas to see exactly where these views began, and where they would take me as an artist. Almost immediately I experimented with random figures found specifically in the N'debele culture in South Africa. In addition, I incorporated abstraction and expressive marks within the figure and slowly introduced cut paper, flat imagery and abstraction with the realistic figure. This became very challenging but I was determined to unite these ideas successfully. More recently, my work has concentrated on the essential elements that have influenced my work as an artist, which recedes to childhood. The main elements most prevalent within the work is rhythm …

California legislated the restructuring of its electric power industry in 1996. Deregulation was successful until 2000 when crisis, caused by a number of outside forces and flawed legislation, sent wholesale electric prices skyrocketing. Restructuring of the electricity sector in Texas occurred in two phases. The first phase began in 1995, when wholesale markets were opened to competition; the second phase began June 18, 1997, when the 1999 Texas Electric Choice Act, was signed into law. Deregulation has largely been successful in Texas. This analysis examines the legislation of these states and how they differed, setting the stage for one unsuccessful and one successful move to retail competition in the electricity industry.

In 1993, 38.9 million people were covered by a 401(k) plan, up from 7.1 million in 1983. The rapid growth of 401(k) and other defined contribution pension plans may alter retirement patterns of older workers. Previous research showed that the spread of defined benefit plans, with sharp age-related incentives first discouraging and later encouraging retirement, contributed to the early retirement trend of past decades. Defined contribution plans differ along several dimensions, especially in their smooth rate of pension wealth accrual. Data from the Health and Retirement Study show that retirement patterns have begun to change as defined contribution plans have spread. Estimates indicate that the financial incentives in defined benefit pensions lead people to retire almost two years earlier, compared to people with defined contribution plans.

A genomic clone containing a 16.9-kb segment of cotton DNA was found to encompass a D-12 fatty acid desaturases (FAD2-4) gene. The FAD2-4 gene has a single, large intron of 2,780 bp in its 5'-untranslated region, just 12 bp upstream from the ATG initiation codon of the FAD2-4 opening reading frame. A number of prospective promoter elements, including several light-responsive sequences, occur in the 5'-flanking region. The coding region of the gene is 1155 bp with no introns, and would encode a FAD2-4 polypeptide of 384 amino acids. The putative protein had four membrane-spanning helices, hallmarks of an integral membrane protein, and would probably be located in the endoplasmic reticulum. The FAD2-4 gene is indeed a functional gene, since yeast cells transformed with a plasmid containing the coding region of the gene synthesize an appreciable amount of linoleic acid (18:2), not normally made in wild-type yeast cells. The FAD2-4 gene has many structural similarities to the cotton FAD2-3 gene that was also analyzed in this laboratory.

Chapter 1 discusses how the concept of the stitch as art object evolved. The question in the statement of problems concerned the use of design principles on the stitch and the perception of the stitch by the viewer. Chapter 2 discusses the various processes involved in creating the works to answer the proposed questions, and discusses the use of literalism in the concept of the works. Chapter 3 discusses what was learned from the experience.

I want to find a balance within the juxtaposition of representational imagery, patterned fabric, stain and found objects, which effectively communicates the ideas of my work, yet still provides a visually interesting object/painting. How do my materials relate to the content and/or meaning of the work? How will focusing on a single subject affect the development and visual content of my painting? How will I choose representational images to use in relation to the aims of my subject? I was struck by the connections between the baby doll and the real baby. The baby doll became a representation of an idealized body. My interest in baby doll source materials evolved through several different stages, beginning with drawings of baby dolls, then actual doll parts, and finally to imagery of babies with genetic defects. Formally, the work was able to progress as the idea or content progressed.

The focus of my work is the incorporation of three-dimensional sculptural forms into the design of my garments while still maintaining the functional purpose of the garment. Origami paper folding is the inspiration for the sculptural forms. The major endeavor was to explore and solve the relationship between the organic human forms and the geometric forms created by the origami paper folds. This presented a challenge of exact precision. During this process, I experimented with different fabrics, which can accommodate the sharp creases and retain the shape. A variety of folding patterns were also explored. Although the design should be innovative and creative, the final garment must be wearable and comfortable.

This problem in lieu of thesis report presents a study on gate electrode materials on high K dielectrics, including poly-SiGe and Ru. The stability of poly-SiGe in direct contact with Hf silicon-oxynitride (HfSiON) is studied by rapid thermal annealing (RTA), Rutherford backscattering spectrometry (RBS), X-ray photoelectron spectroscopy (XPS) and high resolution transmission electron microscopy (HRTEM). By performing a series of RTA treatments we found that as RTA thermal budgets reach 1050 C for 30s, the poly-SiGe layer begins to intermix with the HfSiON film, as observed by TEM. The maximum annealing condition for the Hf0.14Si0.23O0.46N0.17 film to remain stable in contact with poly-SiGe is 1050 C for 20s in high purity N2(99.9%) ambient. We also found that after 1000 C annealing for 60s in a nitrogen ambient, the poly-SiGe crystal phase structure was changed from a columnar structure to a large grain structure. For a metal gate, Ru was studied to determine N2annealing effects on sheet resistance of Ru sample electrodes and electrical characterization of Ru/HfSiOx/Si stack. Results show that a pure Ru metal gate is not a good choice for high k materials since it is hard to etch off, and different annealing conditions can cause large changes in …

The following paper reveals some aspects of my thoughts about art. The works discussed are featured in my M.F.A. exhibition. All works are mainly based on the ideas of absence, self-reference and utilization in art practice, even though each piece approaches the subject from differing angles. My dissatisfaction with preconceived notions in the contemporary art, rooted in art history, has shifted my focus from concerns of the direct, physical presence of artworks to the indirect or indecisive elements of their context. From this position I have felt free to explore the paradox of self-reference that is involved in performance. In addition, by transferring art works to functional objects, I have found a way to infuse everyday life with my art, and vice-versa. The ambiguity of interpreting artworks with language means that I present this paper with photographic documentation of my artwork. Combined, this will give a clear indication of the thrust of my graduate studies and the current theatrical direction of my art.

This report analyzes the economic impacts of the Baylor Regional Medical Center at Grapevine, Texas. The economic impacts are analyzed using the IMPLAN impact modeling system developed by the Minnesota IMPLAN Group. The analysis evaluates construction activities by Baylor-Grapevine as well as procurement spending and employment. Additionally, the impact of ancillary facilities surrounding Baylor-Grapevine and the impact of patient visitor spending is also reviewed. Total recurring impacts of procurement spending at Baylor-Grapevine, employment at Baylor-Grapevine and its ancillary facilities, and visitor spending will generate over $227 million in economic activity for the Dallas/Fort Worth Metroplex. This activity will support more than 3,300 direct, indirect, and induced jobs paying over $138 million in annual earnings.

This study describes the role of rural women and their importance in the success of microfarm projects. Microfarm cultivators can increase their income levels through trade of agricultural products. By adopting self-sustaining methods, the cultivator saves money and does not need to rely as much on goods and services from outside resources to increase food production efficiencies in microfarms. This goal can be reached in part through careful planning and construction of the microfarm facility. In addition, in developing phases of the microfarm, the external resources may possibly be a mechanism to increase expansion and knowledge. Microfarms are an important option for the third world countries and poor people worldwide.

Although the study of surface segregation has a great technological importance, the work done in the field was for a long time largely restricted to experimental studies and the theoretical work was neglected. However, recent improvements in both first principles and semi-empirical methods are opening a new era for surface scientists. A method developed by Bozzolo, Ferrante, and Smith (BFS) is particularly suitable for complex systems and several aspects of the computational modeling of surfaces and segregation, including alloy surface segregation, structure and composition of alloy surfaces and the formation of surface alloys. In the following work I introduce the BFS method and apply it to model the Ni-Al alloy through a Monte-Carlo simulation. A comparison between my results and those results published by the group mentioned above was my goal. This thesis also includes a detailed explanation of the application of the BFS method to surfaces of multi-component metallic systems, beyond binary alloys.

The first segment introduces the background information on the use of paños as art by prisoners and how I appropriate the same materials to create and record my own cultural mythology. The Statement of Problem and Questions are about how and what cultural information is chosen in creating a visual mythology. The second segment explains the invention of the mythology by describing why certain experiences were chosen, specifically those of the graduate school experience. Also the development of self-representation through self-portraits is described. The third segment explains the symbolism used in the imagery, such as the cacti as cultural indicator and palimpsest. The fourth segment is a conclusion involving the realization that feeling caught within a hybrid culture is an important part of my identity.

Online airline ticket booking system is one of the essential applications of E-commerce. With the development of Internet and security technology, more and more people begin to consume online, which is more convenient and personal than traditional way. The goal of this system is to make people purchase airline tickets easily. The system is written in JAVATM. Chapter 1 will introduce some basic conception of the technologies have been used in this system. Chapter 2 shows how the database and the system are designed. Chapter 3 shows the logic of the Web site. In Chapter 4 the interface of the system will be given. Chapter 5 tells the platform of this system.

Movement, whether conveyed through an actual motion or a gestured implication, remains an underlying theme in my creative process that started with my earliest works. I explored different aspects of kinetic sculpture, because I am seeking new ways to create motion such as experimenting with circulating air, wind, and the use of water features. I created a series consisting of three to five kinetic sculptures which do not rely on sound or direct viewer manipulation.

This paper is addressed to the inner city and some suburban congregations seeking to express their faith through practical initiatives to revitalize their distressed communities. The paper seeks to inspire and instruct the reader with motivational stories containing illustrations of the valuable role that African-American congregations have played in stimulating economic development in their communities. The paper also shows the importance of African-Americans having some control over the flow of economic funds throughout the community. African-American churches in the inner city should undertake significant ventures in community economic development to minister to the temporal as well as the spiritual needs of their communities. This paper will demonstrate how the African-American church, with assistance from federal, state, local programs, and private concerns, can be effective in the urban revitalization.

This paper evaluated the effects of selected demographic characteristics and services received on obtaining unsubsidized employment by Job Training Partnership Act Program participants in the states of Arkansas, Louisiana, New Mexico, and Oklahoma in 1996 and 1997. The data used for this paper are from Title II A (Disadvantaged Adults) individualized records. Six variables were statistically significant across all four states. These variables were cash welfare benefits, high school grade completed, occupational classroom training with a goal, on-the-job training with a goal, work experience training with a goal, and the real three-year growth rate in retail/wholesale trade employment. included demographic characteristics, as well as service interventions.

This research project evaluates the effectiveness of specific music theory instructional strategies in terms of D. A. Kolb’s theory of experiential learning and Kolb’s typology of individual learning style. The project provides an original methodology for the adaptation of music theory instructional material to the individual learning style types described in Kolb’s typology. The study compares the relative effectiveness of two music theory instructional sequences, one of which is adapted for all of the learning style modalities described in Kolb’s typology, and the other adapted for only a limited number of Kolb’s learning style types. In order to compare the potential “learning outcomes” produced by these instructional sequences, a detailed study is proposed, in which computer based instruction (CBI) will deliver the instructional sequences to research participants and electronically record the participants’ responses. The current study demonstrates the effective aspects of the original methodology and suggests methods for the successful adaptation of music theory instructional material to individual student learning styles.