Liu Donghai, male, born in 1974, graduated from Tianjin University. And now he is a professor in Hydraulic Engineering at Tianjin University, Tianjin, China. Dr. Liu has published over 30 papers, and co-authored 3 monographs. His current research is system analysis and optimization on hydraulic engineering, real-time monitoring and evaluation of earth rock dam construction quality. He can be reached by E-mail : liudh@ tju. edu. cn