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H. Leung
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Imagining Globalization
H. Leung, M. Hendley, R. Compton, B. Haley
- Palgrave Macmillan
- 23 Novembre 2009
- 9780230101586
This collection gives voice to the peoples and groups impacted by globalization as they seek to negotiate their identities, language use, and territorial boundaries within a larger global context. Rather than viewing globalization as one-dimensional (i.e., cultural, economic, or political), the approaches taken by the authors reflect a nuanced and multifaceted discussion of globalization that integrates all three perspectives. They explore identity, boundaries, language use, and other issues in the context of specific temporal and spatial contexts.
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High-Performance Parallel Database Processing and Grid Databases
David Taniar, Clement H. C. Leung, Wenny Rahayu, Sushant Goel
- Wiley
- 17 Septembre 2008
- 9780470391358
The latest techniques and principles of parallel and grid database processing The growth in grid databases, coupled with the utility of parallel query processing, presents an important opportunity to understand and utilize high-performance parallel database processing within a major database management system (DBMS). This important new book provides readers with a fundamental understanding of parallelism in data-intensive applications, and demonstrates how to develop faster capabilities to support them. It presents a balanced treatment of the theoretical and practical aspects of high-performance databases to demonstrate how parallel query is executed in a DBMS, including concepts, algorithms, analytical models, and grid transactions. High-Performance Parallel Database Processing and Grid Databases serves as a valuable resource for researchers working in parallel databases and for practitioners interested in building a high-performance database. It is also a much-needed, self-contained textbook for database courses at the advanced undergraduate and graduate levels.
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This thesis describes how the rich internal degrees of freedom of molecules can be exploited to construct the first "clock" based on ultracold molecules, rather than atoms. By holding the molecules in an optical lattice trap, the vibrational clock is engineered to have a high oscillation quality factor, facilitating the full characterization of frequency shifts affecting the clock at the hertz level. The prototypical vibrational molecular clock is shown to have a systematic fractional uncertainty at the 14th decimal place, matching the performance of the earliest optical atomic lattice clocks. As part of this effort, deeply bound strontium dimers are coherently created, and ultracold collisions of these Van der Waals molecules are studied for the first time, revealing inelastic losses at the universal rate. The thesis reports one of the most accurate measurements of a molecule's vibrational transition frequency to date. The molecular clock lays the groundwork for explorations into terahertz metrology, quantum chemistry, and fundamental interactions at atomic length scales.