作为下一代访问控制技术的使用控制(ucon)模型已经成为访问控制技术研究的热点。

UCON model has become a hot research as the next generation of access control technology.

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基于波长路由的WDM全光网是下一代高速宽带光纤网络的首选技术，如何对它进行有效而灵活的管理是目前研究的热点。

WDM all optical networks using wavelength routing represent the most promising solution for future high capacity fiber networks and how to manage it efficiently and flexibly is a hot spot.

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在这样的背景下，超宽带(uwb)技术引起了人们的重视，已逐渐成为无线通信领域研究、开发的一个热点，并被视为下一代无线通信的关键技术之一。

UWB is an important technology for indoor high rate wireless communications and now it is looked as one of the key technologies for the next generation wireless communication systems.

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