Supported by the Scientific Research Fund of Hunan Provincial Education Department(09A080);the Scientific Research Founds for "New Century Engineering of ‘121’Talents in Hunan Province";the Returned Overseas Chinese Scholars in University of South China
Project supported by the Natural Science Foundation of China(No.60572093);Specialized Research Fund for the Doctoral Program of Higher Education of China(No.20050004016);NSFC-KOSEF Joint Research Project and IITA Professorship Program of Gwangju Instiute of Science and Technology