View All Items
(9,541 - 9,560 of 9,598)
Pages
- Title
- World peace or war?.
- Creator
-
Kalinin, M. I. (Mikhail Ivanovich)
- Date Issued
- 1938
- Identifier
- 2683083, CFDT2683083, ucf:5026
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/FCLA/DT/2683083
- Title
- The world revolution.
- Creator
-
Gorter, Herman, McMillan, Hugh
- Date Issued
- 1920
- Identifier
- 358317, CFDT358317, ucf:5195
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/FCLA/DT/358317
- Title
- The world significance of the Russian revolution.
- Creator
-
Pitt Rivers, George Henry Lane Fox, Levy, Oscar
- Date Issued
- 1920
- Identifier
- 358321, CFDT358321, ucf:5199
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/FCLA/DT/358321
- Title
- The world situation, the internal and international position of the Soviet Union.
- Creator
-
TSK KPSS, Stalin, Joseph, Kommunisticheskaiia partiia Sovetskogo Soiuza
- Date Issued
- 1934
- Identifier
- 369238, CFDT369238, ucf:5407
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/FCLA/DT/369238
- Title
- World unemployment and the five year plan.
- Creator
-
Trotsky, Leon
- Date Issued
- 1931
- Identifier
- 671407, CFDT671407, ucf:5574
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/FCLA/DT/671407
- Title
- World voices on the Moscow trials: A compilation from the labor and liberal press of the world: Published for the American committee for the defense of Leon Trotsky.
- Creator
-
American Committee for the Defense of Leon Trotsky (New York)
- Date Issued
- 1936
- Identifier
- 369315, CFDT369315, ucf:5415
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/FCLA/DT/369315
- Title
- The world's trade union movement.
- Creator
-
Lozovskiĭ, A., Browder, Earl R., Skromny, M. A.
- Date Issued
- 1924
- Identifier
- 2072175, CFDT2072175, ucf:4887
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/FCLA/DT/2072175
- Title
- WORLDVIEW, IDEOLOGY, AND CERAMIC ICONOGRAPHY: A STUDY OF LATE TERMINAL FORMATIVE GRAYWARES FROM THE LOWER RIO VERDE VALLEY OF OAXACA, MEXICO.
- Creator
-
Brzezinski, Jeffrey, Barber, Sarah, University of Central Florida
- Abstract / Description
-
This study investigates worldview and ideology during the late Terminal Formative period (A.D. 100 250) in the lower Rio Verde Valley of Oaxaca, Mexico, through an analysis of iconography found on grayware ceramic serving vessels. The sample includes 457 vessels and sherds from 17 lower Verde sites obtained through excavations and surface collections between 1988 and 2009. Drawing upon theories of semiotics and style, this thesis identifies a suite of icons suggesting that ceramics were a...
Show moreThis study investigates worldview and ideology during the late Terminal Formative period (A.D. 100 250) in the lower Rio Verde Valley of Oaxaca, Mexico, through an analysis of iconography found on grayware ceramic serving vessels. The sample includes 457 vessels and sherds from 17 lower Verde sites obtained through excavations and surface collections between 1988 and 2009. Drawing upon theories of semiotics and style, this thesis identifies a suite of icons suggesting that ceramics were a medium for expressing regionally shared beliefs. Chatino potters carved common Formative period Mesoamerican themes into the walls of graywares, such as depictions of maize and climatic phenomena, which may have been part of a religious worldview rooted in the belief that humans and non-human deities shared a reciprocal relationship. People at Rio Viejo, including elites, may have attempted to exploit this relationship, thought of as a "sacred covenant" or agreement between humans and deities, to create a more centralized political entity during the late Terminal Formative Chacahua phase. By using iconographic graywares in socially and politically significant ritual activities such as feasting and caching events, elites imbued graywares with a powerful essence that would have facilitated the spread of the coded messages they carried. Based on statistical analyses of the diversity of iconographic assemblages from various sites, I argue that the assemblage of icons at Rio Viejo, a late Terminal Formative political center in the lower Verde, indicates ideas likely originated at or flowed through this site.
Show less - Date Issued
- 2011
- Identifier
- CFE0003728, ucf:48786
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0003728
- Title
- Worldwide Infrastructure for Neuroevolution: A Modular Library to Turn Any Evolutionary Domain into an Online Interactive Platform.
- Creator
-
Szerlip, Paul, Stanley, Kenneth, Laviola II, Joseph, Wu, Annie, Kim, Joo, University of Central Florida
- Abstract / Description
-
Across many scientific disciplines, there has emerged an open opportunity to utilize the scale and reach of the Internet to collect scientific contributions from scientists and non-scientists alike. This process, called citizen science, has already shown great promise in the fields of biology and astronomy. Within the fields of artificial life (ALife) and evolutionary computation (EC) experiments in collaborative interactive evolution (CIE) have demonstrated the ability to collect thousands...
Show moreAcross many scientific disciplines, there has emerged an open opportunity to utilize the scale and reach of the Internet to collect scientific contributions from scientists and non-scientists alike. This process, called citizen science, has already shown great promise in the fields of biology and astronomy. Within the fields of artificial life (ALife) and evolutionary computation (EC) experiments in collaborative interactive evolution (CIE) have demonstrated the ability to collect thousands of experimental contributions from hundreds of users across the glob. However, such collaborative evolutionary systems can take nearly a year to build with a small team of researchers. This dissertation introduces a new developer framework enabling researchers to easily build fully persistent online collaborative experiments around almost any evolutionary domain, thereby reducing the time to create such systems to weeks for a single researcher. To add collaborative functionality to any potential domain, this framework, called Worldwide Infrastructure for Neuroevolution (WIN), exploits an important unifying principle among all evolutionary algorithms: regardless of the overall methods and parameters of the evolutionary experiment, every individual created has an explicit parent-child relationship, wherein one individual is considered the direct descendant of another. This principle alone is enough to capture and preserve the relationships and results for a wide variety of evolutionary experiments, while allowing multiple human users to meaningfully contribute. The WIN framework is first validated through two experimental domains, image evolution and a new two-dimensional virtual creature domain, Indirectly Encoded SodaRace (IESoR), that is shown to produce a visually diverse variety of ambulatory creatures. Finally, an Android application built with WIN, #filters, allows users to interactively evolve custom image effects to apply to personalized photographs, thereby introducing the first CIE application available for any mobile device. Together, these collaborative experiments and new mobile application establish a comprehensive new platform for evolutionary computation that can change how researchers design and conduct citizen science online.
Show less - Date Issued
- 2015
- Identifier
- CFE0005889, ucf:50892
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0005889
- Title
- Wounded Warrior or War Hero? Or Maybe, Neither?: Resisting Common Tropes of the Veteran and Developing Digital Literacy Practices via Narrative Building and Identity Presentation in Social Networking Spaces.
- Creator
-
Branham, Cassandra, Vie, Stephanie, Rounsaville, Angela, Salter, Anastasia, Grohowski, Mariana, University of Central Florida
- Abstract / Description
-
This project reports on the results of a study that investigated the social networking use of student and non-student veterans, with a particular focus on the narrative building and identity presentation practices involved in this use. In this dissertation, I argue that stereotypical and exclusionary tropes of the veteran, such as the veteran as war hero and the veteran as wounded warrior, are damaging to our veterans and to others, in both the society and the classroom. However, through the...
Show moreThis project reports on the results of a study that investigated the social networking use of student and non-student veterans, with a particular focus on the narrative building and identity presentation practices involved in this use. In this dissertation, I argue that stereotypical and exclusionary tropes of the veteran, such as the veteran as war hero and the veteran as wounded warrior, are damaging to our veterans and to others, in both the society and the classroom. However, through the detailed analysis of survey data and data collected from an interview and social networking profile tour with one student veteran participant, I highlight the exclusionary nature of these tropes and argue that the complex digital narratives crafted in social networking spaces can offer resistance to popular tropes of the veteran. The complexity of my participants' digital narratives also offers support for the argument that elements of one's social networking profiles, when viewed independently and decontextualized, can lead to invalid and unfair assumptions about the users' identity. Additionally, I argue that, for my participants, many of whom demonstrated a nuanced and critical understanding of audience, decisions to self-identify as military personnel in social networking spaces are intertwined with perceptions of privacy. Finally, this project culminates in the identification of a number of digital literacy practices present in my participants' social networking use, as well as a set of pedagogical and programmatic recommendations for writing teachers and writing program administrators interested in aiding student veterans in the process of transition and reintegration.
Show less - Date Issued
- 2016
- Identifier
- CFE0006268, ucf:51030
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0006268
- Title
- WRITE THE COMMUNITY: THE EFFECTS OF SERVICE-LEARNING PARTICIPATION ON SEVEN UNIVERSITY CREATIVE WRITING STUDENTS.
- Creator
-
Hodges, Lauren, Kaplan, Jeffrey, University of Central Florida
- Abstract / Description
-
Research in higher education service-learning suggests that there is a positive relationship between service-learning and student learning outcomes as well as a positive relationship between students' interactions with the "real world" through service-learning and the effects of these experiences on deepening students' knowledge in their disciplines. Recent studies have established this positive relationship between service-learning and university composition and literature students. However,...
Show moreResearch in higher education service-learning suggests that there is a positive relationship between service-learning and student learning outcomes as well as a positive relationship between students' interactions with the "real world" through service-learning and the effects of these experiences on deepening students' knowledge in their disciplines. Recent studies have established this positive relationship between service-learning and university composition and literature students. However, aside from the existing literature on service-learning and composition and writing, there has been virtually no examination of the relationship between service-learning and creative writing. The purpose of this study was to investigate how seven creative writing students experienced the process of creative writing differently after engaging in service-learning in a creative writing course at a large, urban university in the southeastern United States and to determine if students experienced a transformative learning experience as indicated by Mezirow's (2000) transformational learning theory. This research study employed an instrumental narrative case study design to determine how seven university creative writing students experienced the process of creative writing differently after taking a creative writing course with an optional service-learning component. The results of the study indicated that service-learning invoked a transformative learning experience in these seven higher education creative writing students, each in different ways-some in their writing processes and writing content, some in how they reflected upon themselves and their writing in relation to the "outside world," and some in their sense of civic duty.
Show less - Date Issued
- 2011
- Identifier
- CFE0003988, ucf:48655
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0003988
- Title
- Writers take sides; letters about the war in Spain from 418 American authors.
- Creator
-
League of American Writers
- Date Issued
- 1938
- Identifier
- 2660259, CFDT2660259, ucf:4977
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/FCLA/DT/2660259
- Title
- Writes of Spring 2014: Fostering Creativity in Theatre, Education, and Leadership.
- Creator
-
Hodson, Alexandra, Weaver, Earl, Wood, Vandy, Siegfried, Judi, University of Central Florida
- Abstract / Description
-
Creativity is valued in many fields. In theatre, creativity celebrates the imaginative power of a theatrical experience. In theatre for young audiences (TYA), creativity is extended from the stage to the classroom, where theatre empowers learning through creative and imaginative teaching. Teaching artists and theatre makers in the field of theatre for young audiences utilize creativity as a means of connecting artistic and educational value. Through professional development and qualitative...
Show moreCreativity is valued in many fields. In theatre, creativity celebrates the imaginative power of a theatrical experience. In theatre for young audiences (TYA), creativity is extended from the stage to the classroom, where theatre empowers learning through creative and imaginative teaching. Teaching artists and theatre makers in the field of theatre for young audiences utilize creativity as a means of connecting artistic and educational value. Through professional development and qualitative research, this project demonstrates the importance of creativity and its role in the classroom and on stage.This study examines my role as Project Coordinator in Orlando Repertory Theatre's (The REP) Writes of Spring 2014 and the developments I add to enhance the educational and artistic value and project. Specifically, I survey the findings of selected students' submissions in a creative writing contest by developing and facilitating an arts integration professional development workshop for their teachers. By evaluating these findings I gain insight into the positive effect of enhancing creativity in public school classrooms.To project the value of creativity further, I apply a theoretical framework to my research. Specifically, I apply creative pedagogy, constructivism, and collective creativity to develop a fully-supported educational and artistic project. This project allows students to find writing inspiration through theatre, guides teachers to find clarity in new practices through creativity, and encourages artists to celebrate creativity in developing and producing new works.
Show less - Date Issued
- 2015
- Identifier
- CFE0005627, ucf:50209
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0005627
- Title
- WRITES OF SPRING: A STUDY OF COMMUNICATION WITHIN COLLECTIVE DEVISING.
- Creator
-
Adams, Jennifer, Weaver, Earl, University of Central Florida
- Abstract / Description
-
Communication is a pivotal element in creating theatre with other artists, with audiences, and with the outside world. Theatre artists are required to collaborate at nearly every step of the process. Despite the necessity of highly developed collaboration skills, communication in the creation of theatre is an often-underdeveloped curriculum area. As a Director and Teaching Artist I am particularly interested in how to find new ways of collaborating so I may model and pass these skills to my...
Show moreCommunication is a pivotal element in creating theatre with other artists, with audiences, and with the outside world. Theatre artists are required to collaborate at nearly every step of the process. Despite the necessity of highly developed collaboration skills, communication in the creation of theatre is an often-underdeveloped curriculum area. As a Director and Teaching Artist I am particularly interested in how to find new ways of collaborating so I may model and pass these skills to my students. Through a qualitative research survey of communication used in collaborative devising, this research analyzes environments that improve communication and allow for maximum creativity in an effort to develop critical communication pedagogy. This study examines my approach in working through a devising process as the Coordinator of a collaborative group of adults creating an original play. I examine our process and make connections as to how devising influenced my future work as a Director and Teaching Artist. By examining the theatres that make extensive use of ensemble devising as a tool for creating theatre, I gained insight into more collaborative ways of working. This research found support through examination of group communication theories and methods in which they promote collaborative spirit. Finally, critical pedagogy offered a lens through which I can impart these discoveries to young artists. I discovered ways to use the model of devising to open the possibilities for my students to take ownership over their processes and the art they create. I also gained insight into the role of facilitator in order to develop ways of modeling and teaching these communications. Communication pedagogy in the theatre allows me the tools to identify, question, and transform my experiences in creating theatre as a director and teaching artist.
Show less - Date Issued
- 2011
- Identifier
- CFE0003610, ucf:48878
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0003610
- Title
- Writing as a public relations task: how much do public relations practitioners write?.
- Creator
-
Stansberry, Frank R., Taylor, K. Phillip, Arts and Sciences
- Abstract / Description
-
University of Central Florida College of Arts and Sciences Thesis; The purpose of this study was to investigate how much public relations people write in the course of their work; to determine if the amount and type of writing varies with experience, job type or employer; and to investigate what other tasks besides writing public relations professionals do. The sample was 198 members of the Public Relations Society of America who responded to a nation-wide mailing of 500 people selected from...
Show moreUniversity of Central Florida College of Arts and Sciences Thesis; The purpose of this study was to investigate how much public relations people write in the course of their work; to determine if the amount and type of writing varies with experience, job type or employer; and to investigate what other tasks besides writing public relations professionals do. The sample was 198 members of the Public Relations Society of America who responded to a nation-wide mailing of 500 people selected from the Society's membership directory. Results showed that public relations practitioners spent 36.5 percent of their time writing. Overall, public relations people spend more time on publicity, media relations, and business administration than on any other function, but counseling management and research--two emerging area--are rating in the top 50 percent. Thus, while this study does not provide any startling new information on the public relations industry, it does provide, for the first time, empirical evidence of what an average or typical public relations practitioner does. That was the primary goal of the study.
Show less - Date Issued
- 1989
- Identifier
- CFR0008148, ucf:52953
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFR0008148
- Title
- Writing for Change and Changing Writing: Service Learning, First-Year Composition and Writing about Writing.
- Creator
-
Bormann, Vanessa, Scott, John, Wardle, Elizabeth, Young, Beth, University of Central Florida
- Abstract / Description
-
Through a piloted model of curriculum designed for ENC 1101 this teacher-research study investigated how service-learning can shape the experiences of both teachers and students in the first-year composition classroom. The research aimed to determine the ways in which enhancement occurred for students and teachers through evaluation of student coursework, a post-semester student focus group and a faculty interview. Focusing on the impacts of this curriculum on a part-time teacher, this study...
Show moreThrough a piloted model of curriculum designed for ENC 1101 this teacher-research study investigated how service-learning can shape the experiences of both teachers and students in the first-year composition classroom. The research aimed to determine the ways in which enhancement occurred for students and teachers through evaluation of student coursework, a post-semester student focus group and a faculty interview. Focusing on the impacts of this curriculum on a part-time teacher, this study also aimed to bring to light some of the challenges inherent in service-learning within FYC, while offering ways to mediate those challenges in both course design and departmental implementation. As a result of this project, recommendations were made for modification of this curriculum to be used as an option for instructors alongside appropriate professional development, which is essential to the success of service-learning in FYC. Continued research dealing with various approaches to using service-learning in FYC was also recommended.
Show less - Date Issued
- 2012
- Identifier
- CFE0004292, ucf:49479
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0004292
- Title
- Wrong-Way Driving: A Regional Approach To A Regional Problem.
- Creator
-
Faruk, Md. Omar, Al-Deek, Haitham, Uddin, Nizam, Hasan, Samiul, University of Central Florida
- Abstract / Description
-
Wrong-way driving (WWD) has been problematic on United States highways for decades despite its rare occurrence. Since WWD crashes are rare, recent researchers have studied WWD non-crash events such as WWD 911 calls and WWD citations to understand the overall nature and trend of WWD. This paper demonstrates the regional nature of the WWD problem and proposes regional transportation systems management and operations (Regional TSM(&)O) solutions to combat this problem. Specifically, it was found...
Show moreWrong-way driving (WWD) has been problematic on United States highways for decades despite its rare occurrence. Since WWD crashes are rare, recent researchers have studied WWD non-crash events such as WWD 911 calls and WWD citations to understand the overall nature and trend of WWD. This paper demonstrates the regional nature of the WWD problem and proposes regional transportation systems management and operations (Regional TSM(&)O) solutions to combat this problem. Specifically, it was found that 11% of all WWD multi-data events (e.g., multiple 911 calls for the same WWD event) traveled from one county to another. Additionally, 30% of all WWD single-data and multi-data events occurred at or near interchanges between two limited access highways in counties with multiple operating agencies. This indicates that a significant proportion of WWD events could potentially travel from one limited access facility to another. Moreover, 28% of WWD events occurred on limited access facilities shared by multiple agencies. To emphasize the regional nature of WWD, this paper determined the vulnerable demographic groups in different regions of Florida by developing WWD crash and citation prediction models. The models' findings indicate that certain demographic groups (such as elderly or Hispanic) increase WWD risk. The models' results can be used to improve driver education and increase law enforcement presence in high risk WWD locations. Regional TSM(&)O solutions, such as coordination and communication among agencies and regional traffic management centers (RTMCs), law enforcement co-location with RTMCs, and strengthening statewide TSM(&)O programs to manage WWD events are also proposed.
Show less - Date Issued
- 2017
- Identifier
- CFE0006874, ucf:51736
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0006874
- Title
- X-ray Radiation Enabled Cancer Detection and Treatment with Nanoparticles.
- Creator
-
Hossain, Mainul, Su, Ming, Behal, Aman, Gong, Xun, Hu, Haiyan, Kapoor, Vikram, Deng, Weiwei, University of Central Florida
- Abstract / Description
-
Despite significant improvements in medical sciences over the last decade, cancer still continues to be a major cause of death in humans throughout the world. Parallel to the efforts of understanding the intricacies of cancer biology, researchers are continuously striving to develop effective cancer detection and treatment strategies. Use of nanotechnology in the modern era opens up a wide range of possibilities for diagnostics, therapies and preventive measures for cancer management....
Show moreDespite significant improvements in medical sciences over the last decade, cancer still continues to be a major cause of death in humans throughout the world. Parallel to the efforts of understanding the intricacies of cancer biology, researchers are continuously striving to develop effective cancer detection and treatment strategies. Use of nanotechnology in the modern era opens up a wide range of possibilities for diagnostics, therapies and preventive measures for cancer management. Although, existing strategies of cancer detection and treatment, using nanoparticles, have been proven successful in case of cancer imaging and targeted drug deliveries, they are often limited by poor sensitivity, lack of specificity, complex sample preparation efforts and inherent toxicities associated with the nanoparticles, especially in case of in-vivo applications. Moreover, the detection of cancer is not necessarily integrated with treatment. X-rays have long been used in radiation therapy to kill cancer cells and also for imaging tumors inside the body using nanoparticles as contrast agents. However, X-rays, in combination with nanoparticles, can also be used for cancer diagnosis by detecting cancer biomarkers and circulating tumor cells. Moreover, the use of nanoparticles can also enhance the efficacy of X-ray radiation therapy for cancer treatment.This dissertation describes a novel in vitro technique for cancer detection and treatment using X-ray radiation and nanoparticles. Surfaces of synthesized metallic nanoparticles have been modified with appropriate ligands to specifically target cancer cells and biomarkers in vitro. Characteristic X-ray fluorescence signals from the X-ray irradiated nanoparticles are then used for detecting the presence of cancer. The method enables simultaneous detection of multiple cancer biomarkers allowing accurate diagnosis and early detection of cancer. Circulating tumor cells, which are the primary indicators of cancer metastasis, have also been detected where the use of magnetic nanoparticles allows enrichment of rare cancer cells prior to detection. The approach is unique in that it integrates cancer detection and treatment under one platform, since, X-rays have been shown to effectively kill cancer cells through radiation induced DNA damage. Due to high penetrating power of X-rays, the method has potential applications for in vivo detection and treatment of deeply buried cancers in humans. The effect of nanoparticle toxicity on multiple cell types has been investigated using conventional cytotoxicity assays for both unmodified nanoparticles as well as nanoparticles modified with a variety of surface coatings. Appropriate surface modifications have significantly reduced inherent toxicity of nanoparticles, providing possibilities for future clinical applications. To investigate cellular damages caused by X-ray radiation, an on-chip biodosimeter has been fabricated based on three dimensional microtissues which allows direct monitoring of responses to X-ray exposure for multiple mammalian cell types. Damage to tumor cells caused by X-rays is known to be significantly higher in presence of nanoparticles which act as radiosensitizers and enhance localized radiation doses. An analytical approach is used to investigate the various parameters that affect the radiosensitizing properties of the nanoparticles. The results can be used to increase the efficacy of nanoparticle aided X-ray radiation therapy for cancer treatment by appropriate choice of X-ray beam energy, nanoparticle size, material composition and location of nanoparticle with respect to the tumor cell nucleus.
Show less - Date Issued
- 2012
- Identifier
- CFE0004547, ucf:49242
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0004547
- Title
- X-ray Scattering Investigations of Metallic Thin Films.
- Creator
-
Warren, Andrew, Coffey, Kevin, Sohn, Yongho, Suryanarayana, Challapalli, Heinrich, Helge, Barmak, Katayun, Toney, Michael, University of Central Florida
- Abstract / Description
-
Nanometric thin films are used widely throughout various industries and for various applications. Metallic thin films, specifically, are relied upon extensively in the microelectronics industry, among others. For example, alloy thin films are being investigated for CMOS applications, tungsten films find uses as contacts and diffusion barriers, and copper is used often as interconnect material. Appropriate metrology methods must therefore be used to characterize the physical properties of...
Show moreNanometric thin films are used widely throughout various industries and for various applications. Metallic thin films, specifically, are relied upon extensively in the microelectronics industry, among others. For example, alloy thin films are being investigated for CMOS applications, tungsten films find uses as contacts and diffusion barriers, and copper is used often as interconnect material. Appropriate metrology methods must therefore be used to characterize the physical properties of these films. X-ray scattering experiments are well suited for the investigation of nano-scaled systems, and are the focus of this doctoral dissertation. Emphasis is placed on (1) phase identification of polycrystalline thin films, (2) the evaluation of the grain size and microstrain of metallic thin films by line profile analysis, and (3) the study of morphological evolution in solid/solid interfaces.To illustrate the continued relevance of x-ray diffraction for phase identification of simple binary alloy systems, Pt-Ru thin films, spanning the compositional range from pure Pt to pure Ru were investigated. In these experiments, a meta-stable extension of the HCP phase is observed in which the steepest change in the electronic work function coincides with a rapid change in the c/a ratio of the HCP phase.For grain size and microstrain analysis, established line profile methods are discussed in terms of Cu and W thin film analysis. Grain sizes obtained by x-ray diffraction are compared to transmission electron microscopy based analyses. Significant discrepancies between x-ray and electron microscopy are attributed to sub-grain misorientations arising from dislocation core spreading at the film/substrate interface. A novel "residual" full width half max parameter is introduced for examining the contribution of strain to x-ray peak broadening. The residual width is subsequently used to propose an empirical method of line profile analysis for thin films on substrates.X-ray reflectivity was used to study the evolution of interface roughness with annealing for a series of Cu thin films that were encapsulated in both SiO2 and Ta/SiO2. While all samples follow similar growth dynamics, notable differences in the roughness evolution with high temperature ex-situ annealing were observed. The annealing resulted in a smoothing of only one interface for the SiO2 encapsulated films, while neither interface of the Ta/SiO2 encapsulated films evolved significantly. The fact that only the upper Cu/SiO2 interface evolves is attributed to mechanical pinning of the lower interface to the rigid substrate. The lack of evolution of the Cu/Ta/SiO2 interface is consistent with the lower diffusivity expected of Cu in a Cu/Ta interface as compared to that in a Cu/SiO2 interface. The smoothing of the upper Cu/SiO2 interface qualitatively follows that expected for capillarity driven surface diffusion but with notable quantitative deviation.
Show less - Date Issued
- 2013
- Identifier
- CFE0004770, ucf:49784
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0004770
- Title
- X: THE RISE AND FALL OF AN ASYLUM STAR (A JOURNEY OF TWO ACTRESSES).
- Creator
-
Wilhite, Erika, Niess, Christopher, University of Central Florida
- Abstract / Description
-
The performance of X: The Rise and Fall of an Asylum Star, in conjunction with my thesis document, investigates the dichotomy of fantasy and reality for a performer. I compare the creative and emotional journey of Augustine, a young woman hospitalized for hysteria, to my own journey as an actress. Augustine was also performer, for her doctors led her in public demonstrations of the symptoms of hysteria. Her "talent" for hysteria earned her notoriety and celebrity. She was coached and directed...
Show moreThe performance of X: The Rise and Fall of an Asylum Star, in conjunction with my thesis document, investigates the dichotomy of fantasy and reality for a performer. I compare the creative and emotional journey of Augustine, a young woman hospitalized for hysteria, to my own journey as an actress. Augustine was also performer, for her doctors led her in public demonstrations of the symptoms of hysteria. Her "talent" for hysteria earned her notoriety and celebrity. She was coached and directed from her doctors to enhance her demonstrations. As a result, the validity and authenticity of her state was questionable. I compare the performative qualities of hysteria with my own states of drama as a performer and draw parallels between us, looking specifically at states of experience, both imagined and real.
Show less - Date Issued
- 2009
- Identifier
- CFE0002679, ucf:48240
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0002679
