大型光学望远镜主镜主动支撑系统研究进展

主动支撑系统能使大型光学望远镜的主镜具备面形控制及定位的能力,单体镜面形主动控制技术及拼接镜共相位成像技术因而得到了迅速发展。回顾了近年来主动支撑系统及促动器在大型光学望远镜中的应用,并对其进行了总结,归纳出了几种常见的主动支撑系统及促动器,比较了它们的特点,陈述了主动支撑系统与促动器之间的内在联系。最后对未来应用于望远镜主镜的主动支撑系统及促动器进行了展望。

The Building of Network Education Platform based on Web 2.0

Comparing with the traditional network education supporting system, this system introduced by the paper adds to many functions based on web 2.0 besides of traditional teaching functions, such as Blog, RSS, etc. These functions accelerate that learner interactive with system. The practice proves that network education supporting system based on web 2.0 can improve learner＇s positivity of active studying and improves the network education＇s quality.