Yong-Kui Chang received his M.S. degree from the Xidian University, China, in 2003 and his Ph.D. degree from the Lanzhou University, China, in 2006. Currently, he serves as a Professor at the School of Mathematics and Physics, the Lanzhou Jiaotong University. His research interest is mainly the functional differential equations with applications.
Biography Updated on 13 December 2013