On the morning of December 1, 2014, Ms. Yuanyuan Zhai successfully passed her Master of Applied Science defense. The title of her thesis is "Development of Inexact Optimization Methods for Planning Environmental Management Systems under Multiple Uncertainties". Her profound knowledge and excellent presentation helped her win the good evaluation from external examiner, Dr. Yiyu Yao and other examining committee members (Drs. Gordon Huang, Liming Dai, Kelvin Ng, Chunjiang An and Zhou Zhang).