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PITTETD 檢索結果共 4141 筆,本頁資料從第 37 筆到第 48 筆

This research aims to enable a large-scale, high-volume, peer-to-peer, stored-video streaming service over the Internet, such as on-line DVD rentals. P2P allows a group of dynamically organized users to cooperatively support content discovery and distribution services without needing to employ a central server. P2P has the potential to overcome the scalability issue ass....

By Masaru Okuda-Information Science-University of Pittsburgh-doctoral-2007-01-30
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Due to its exponential growth and decentralized nature, the Internet has evolved into a chaotic repository, making it difficult for users to discover and access resources of interest to them. As a result, users have to deal with the problem of information overload. The Semantic Web's emergence provides Internet users with the ability to associate explicit, self-describe....

By Chatree Sangpachatanaruk-Information Science-University of Pittsburgh-doctoral-2007-01-30
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This study focused on journalists, who are constantly seeking, processing, evaluating and packaging information, in order to shed light on their information behaviors, and contribute to the development of efficient information behaviors. The examination focused on the information behaviors of journalists as they relate to the Internet and information technologies. The p....

By Abdulnasir Taleb Abdulla-Library and Information Science-University of Pittsburgh-doctoral-2007-01-30
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Obesity and cardiovascular disease is common in bipolar disorder, both of which are associated with insulin resistance. Insulin resistance is also associated with distribution of body fat, specifically abdominal visceral fat and fat accumulation in skeletal muscle. Furthermore, reduced capacity to utilize fat has been linked with obesity, type 2 diabetes and insulin res....

By Sara Beth Fleet-Health, Physical, and Recreation Education-University of Pittsburgh-doctoral-2007-01-30
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The ability of the catalytic, asymmetric acyl halide-aldehyde cyclocondensation (AAC) reaction to produce stereoenriched beta-lactone products has found extensive utility in natural product synthesis. The asymmetric Al(III)-catalyzed AAC-SN2 ring opening sequence was exploited in synthetic efforts towards the enantioselective total synthesis of the aspidospermane alkal....

By Andrew Stephen Wasmuth-Chemistry-University of Pittsburgh-doctoral-2007-01-30
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As more users rely on web-based health information there is a growing need to identify reliable information sources. Currently there are a few evaluation approaches for web-based information but they require paper-based materials for note taking or require utilization on a subjective ranking system. In each case, these approaches require an extended period of time to as....

By Elizabeth Marie La Rue-Library and Information Science-University of Pittsburgh-doctoral-2007-01-30
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Educational leaders are at the forefront for implementing policies and practices that promote rigorous teaching and learning. In order to plan, implement, and evaluate appropriate programming, educational leaders, especially principals, must make data driven decisions. Educational leaders can afford themselves the opportunity to make informed decisions through the accep....

By Jill Michaela Jacoby-Administrative and Policy Studies-University of Pittsburgh-doctoral-2007-01-30
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Alzheimers disease (AD) affects a considerable, and increasing, part of the population. Early diagnosis of AD is very important to permit effective therapy, and minimize ADs social and economic burden. The goal of our research is to evaluate the changes of cerebral perfusion (i.e., blood flow) in the early stages of AD and the effects from hypertension. We studied volun....

By Weiying Dai-Computer Science-University of Pittsburgh-doctoral-2007-01-30
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The dissertation considers Irish films through the valence of movement and migration to conceptualize a cinema that can account for how films function locally and transnationally. I consider various forms of migration in films produced in Ireland to interrogate how identity and the nation are presented. Considering forms of migration opens a different approach to the fi....

By Dana C Och-English-University of Pittsburgh-doctoral-2007-01-30
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Understanding the function of every protein is one major objective of bioinformatics. Currently, a large amount of information (e.g., sequence, structure and dynamics) is being produced by experiments and predictions that are associated with protein function. Integrating these diverse data about protein sequence, structure, dynamics and other protein features allows fur....

By Xiong Liu-Information Science-University of Pittsburgh-doctoral-2007-01-30
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This thesis examines the Latin American avant-garde movements of the 1920s and 1930s not through the usual focus, poetry, but through narrative fiction. I am working here with three 1930s novels that portray profound ideological concerns that had not often been considered in earlier Latin American avant-garde narratives. El tungsteno, by Peruvian César Vallejo, is a mi....

By Alejandro Bruzual-Hispanic Languages and Literatures-University of Pittsburgh-doctoral-2007-01-30
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This study investigates the recent implementation of the Escuelas de Bienvenida program (Welcome Schools), in the Autonomous Community of Madrid (CAM). Specifically, it focuses on the Aulas de Enlace, one integral part of the program. This research investigates the participants everyday experiences, and the perceptions and meanings attached to those experiences while in....

By María Dolores Inglés-Hispanic Languages and Literatures-University of Pittsburgh-doctoral-2007-01-30
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