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Research projects are usually undertaken to improve on the existing operating systems.

而科研项目，则通常只是改善现有操作系统的性能。

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New access-control methods will also be introduced as research into operating system security continues.

随着对操作系统安全性的深入研究，将会引入新的访问控制方法。

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In addition to operating four small research telescopes at the mesa, the observatory is also in partnership with the U.S. Naval Observatory (USNO) and the Naval Research Lab (NRL) in operating and providing maintenance for the Navy Precision Optical Interferometer (NPOI).

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Dell's operating costs, including research and development, were 10% of revenue last year, versus 20% at Compaq, 21% at Gateway and 45% at Cisco.

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Charles Rutstein is the chief operating officer at Forrester Research.

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