作者机构:[1]Department of Automation, Tsinghua University, Beijing 100084, China
相关基金:Supported partly by the National Key Basic Research and Development (973) of China (No.2006CB705506), the National High-Tech Research and Development (863) Program of China (Nos.2006AA11Z229 and 2007AA11Z222), and the National Natural Science Foundation of China (Nos.60374059 and 60534060)