The extrusion limits, parameters and microstructures of aluminium 2014 solid and powder.

Solid and powdered Al-2014 alloy extrusions, heat transfer during compaction, temperature changes during extrusion, microstructures of extrusion products, hot torsion and plane strain compression tested specimens have been extensively investigated. Estimation of maximum and minimum pressure allows the prediction of the possibility of an extrusion and the amount of heat transferred from mechanical work to be obtained. Temperature changes during extrusion have a major effect on the extrusion pressure, microstructure and quality of the products. Temperature changes are mainly in two stages: compaction and steady-state and a numerical model of these stages has been developed. Hot torsion and plane strain compression data has been analysed and this data is used to predict the shear stress at any temperature and strain rate by using hot working theory. The minimized extrusion pressure may then be obtained by upper-bound solution. Microstructures of hot torsion, plane strain compression and extrusion have been extensively examined. ATLASES of microstructures at hot working condition for both solid and powdered material have been created. The thermal model has been shown to be essential for the fundamental prediction of hot shortness limits and for the comparison of microstructures between extrusion and metal working tests

Finding Hope: Guatemalan War Orphans\u27 Responses to the Long-Term Consequences of Genocide

The most brutal period of genocide in Guatemala, known as la violencia and denoting the period of 1978-1983, left tens of thousands of mostly Maya indigenous children orphaned. In this dissertation, I present results from research I conducted with war orphans who are now adults and who were raised at a permanent residential home for orphaned children in Santa Apolonia, a majority Maya Kaqchikel Highlands town. Comparing 20 of these war orphans with 20 of their peers from the town of Santa Apolonia, I found that orphans had suffered greater long-term consequences from the genocide. Relative to their peers, orphans reported more genocide-related childhood trauma and ongoing effects of that trauma, greater economic challenges in adulthood because of economic loss sustained from the death of parents and property destruction brought about by la violencia, and more severed familial and community ties, which dramatically shifted their centers of socialization and enculturation during their most formative years of childhood. Nonetheless, orphans in my research project reported higher levels of emotional resiliency and post-traumatic growth and higher rates of college and advanced education enrollment than their peers, allowing them to outpace their peers economically and professionally. In addition, despite having lost familial and natal community ties, orphans asserted a deeply-rooted sense of identity and belonging in the Guatemalan nation-state today, based on a more fluid conceptualization of identity that allows for a simultaneous internalized sense of continuity and active participation in creative practices. Experiencing neither identity loss\u27 nor an \u27identity crisis,\u27 orphans are actively and creatively adapting to their situations and contexts as orphaned survivors of genocide and maintaining a sense of profound rootedness that cannot be destroyed by external forces. Based on these findings with a particular group of war orphans, I illustrate that even in the long-term aftermath of the most brutal, inhumane violence, genocide survivors, by engaging in creative and constructive practices, can overcome adversity and build a life of hope.\u2

“To Follow the Bright Star”: American Involvement in the Spanish Civil War and the Shaping of the U.S. Popular Front, 1937-1938

This thesis explores how American volunteers in the Spanish Civil War worked to create a unified Popular Front, a coalition of left-leaning political groups, in the United States in the late 1930s. Between 1937 and 1938, approximately 2800 Americans volunteered in the Spanish Republican Army to defend the Spanish Republic in the civil war that followed General Francisco Franco’s Nationalist coup. At the start of the war, Germany, Portugal, and Italy declared support for the insurgents and turned an isolated civil war into an international conflict centered around fascism. While the United States established a policy of non-intervention, the Soviet Union and International Communist Party officially supported the Spanish Republicans. Because of this, American involvement in the Spanish Civil War was largely coordinated by the International Communist Party and the Soviet Union. This, coupled with the Cold War between the Soviet Union and the United States following World War II, has created the tendency to equate American volunteers in Spain with an arm of the Soviet Union. Examining their correspondence during the Spanish Civil War, however, reveals a diversity of political motivations for volunteering in Spain. This thesis argues that volunteers minimized political differences within the Popular Front in order to appeal to moderates back in the United States and persuade the U.S. government to end its position of neutrality. United States volunteers intentionally unified the American Left during the Spanish Civil War in response to the threat of fascism, a threat that volunteers believed included domestic concerns regarding race, ethnicity, and class oppression

Telecommunications access in rural Iowa : a study of local calling areas in the Southern Iowa Development District

http://www.worldcat.org/oclc/1808362

Sealed with a Kiss on Your Artery : An Archive of Southern Lesbian Desire

This dissertation examines southern lesbian feminist print culture of the 1970s-2000s, which produced some of the most intersectional work to come out of second-wave feminism— especially in terms of creative and critical challenges to anti-Blackness, classism, metrocentrism, and regional exceptionalism. A central contribution of “Sealed with a Kiss on Your Artery” is its reimagination of archival reading practices from a queer-feminist literary studies perspective. Each chapter examines the archive of a particular lesbian feminist figure and demonstrates a corresponding interpretive practice; I seek to encounter these historical figures in a manner befitting not only the facts of their contributions to lesbian feminism, but also their radical methods of mobilizing print culture to transform collective feeling, affiliation, and action. Taking North Carolina-based Feminary Collective’s lesbian feminist literary journal as a starting point, the first chapter demonstrates backward-onward reflexivity as a methodology, which researchers can use to confront the past so that our presently-situated research serves ever-evolving visions of justice. Drawing from the archive of writer and special collections librarian Ann Allen Shockley, the second chapter combines some of her theories of librarianship with close readings of her fiction to argue for reading practices that remain cognizant of the power dynamics of archival research. The third chapter revisits the lesbian feminist Sex Wars of the 1980s through the archive of southern writer and sex activist Dorothy Allison; I illustrate a process of perverting the archives to tell a story that moves away from the language of war and centers erotic labor as a form of care work. Finally, the fourth chapter proposes a queer praxis of care, kinship, and grief-work modeled after the speculative archive of Jewelle Gomez’s neo-slave vampire narrative The Gilda Stories

Virtual Probe Microscope : atomic force microscope simulator

Training multiple users on basic atomic force microscope (AFM) operation is expensive in both time and money. Using traditional classroom and lab instruction to train AFM users does not allow for sufficient hands-on training with the actual equipment. As in other fields and industries such as aviation and surgery, hands-on training can not be fully completed on the actual equipment. Training simulators have been developed for scenarios where the actual environment is either too expensive or too dangerous. Virtual Probe Microscope (VPM) has been developed as a training simulator for training multiple users on basic AFM operation. VPM is a Windows-based simulator that can simultaneously train a room full of users without the need of an actual AFM. Instructors can use this tool to demonstrate the exact same instruction that a user would receive in an AFM lab within the confines of a classroom, computer lab or living room for distance education students. To simulate the AFM physics, VPM uses a gaming physics engine to create a physical model of the AFM. The physics engine allows the complex behavior of the AFM to be modeled robustly and efficiently in the simulator. The interface of the simulator is a graphical user interface (GUI) that replicates the interface of one of the most popular commercial AFM models

Photogenerated reactive intermediates from thiophene ylides: thiophenes, oxenes and carbenes, oh my

Substituted thiophene-S-oxides and dimethylmalonate thiophene-S,C-ylides were photolytically degraded under a variety of conditions. The thiophene-S-oxides produced complex mixtures of products, including furan. The dimethylmalonate thiophene-S,C-ylides cleanly produced a mixture of singlet and triplet dicarbomethoxycarbene. The reactivity of the photogenerated carbenes were studied, and the characteristics of the chromophores manipulated in order to change the spin characteristics of the carbene

Music and Aspects of Identity in People with Alzheimer\u27s Disease

Music has been used as a healing tool for centuries, now commonly in the form of music therapy. Music therapy has been beneficial for people with Alzheimer’s disease by brightening moods, increasing social interaction, and reducing the difficulty of finding words (Brotons, Koger, & Pickett-Cooper, 1997). In the current study, the effect of music on aspects of identity in individuals with Alzheimer’s was investigated. Twenty-three participants (nine with Alzheimer’s, fourteen non-Alzheimer’s controls) responded to the Autobiographical Memory Interview (AMI) and the Ten-Item Personality Inventory (TIPI) with and without music played immediately beforehand. It was hypothesized that music would increase autobiographical memory recall and accuracy in judgment of personality for those with Alzheimer’s, but would have no effect on participants without Alzheimer’s. Results showed that for people with Alzheimer’s disease, music increased recall of specific events but not simple factual information, and music had no effect on the recall of those without Alzheimer’s. When the data was split into high and low levels of cognitive functioning (based on scores from the Mini-Mental State Examination), the low cognitive functioning group recalled significantly more information on both the personal Semantic and Autobiographical Incident portions of the AMI. The results suggest that music can aid autobiographical recall in individuals with low cognitive functioning, including those with Alzheimer’s disease. The results also provide additional support for the use of music as therapy

Zen in the craft of acting.

In fulfillment of the thesis project requirement for the Master of Fine Arts Degree at the University of Louisville, I portrayed the role of Paulina in William Shakespeare\u27s The Winter\u27s Tale. The production was directed by Dennis Krausnick, co-founder of Shakespeare and Company in Lennox, Massachusetts. This document explores the nature of zen in acting: a euphoric, heightened state of awareness sometimes achieved during a performance. I will examine how the rehearsal process for this particular play prepared the cast to better achieve moments of zen. I will also describe how to apply these same tactics to other plays in order to achieve similar results