Gaowei Yi
College of Engineering, Ocean University of China, Qingdao 266000, P. R. China
China

Xinlin Zhuang
School of Computer Science and Technology, East China Normal University, Shanghai 200062, P. R. China
China

Da Zhang
College of Engineering, Ocean University of China, Qingdao 266000, P. R. China; Department of Mechanical Engineering, National University of Singapore, Singapore 119260, Singapore
Singapore

Yan Li
College of Engineering, Ocean University of China, Qingdao 266000, P. R. China
China

Liang Gong
College of New Energy, China University of Petroleum (East China), Qingdao, Shandong, 266580, P.R. China
China