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[期刊论文] 作者：PU Fang,SUN Dao-qing,CAO Qi-yi,
来源：东华大学学报（英文版） 年份：2004
To provide the right services or information to the right users, at the right time and in the right place in ubiquitous computing environment, an Indoor Ubiquit...
[期刊论文] 作者：SUN Dao-qing,PU Fang,CAO Qi-yi,
来源：东华大学学报 年份：2008
Ubiquitous computing systems typically have lots of security problems in the area of identification supply by means of classical Public Key Infrastructure(PKI)m...
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