Variability based Approach for Minimizing over Design and under Design Yucong Duan, Nanjangud C Narendra, Honghao Gao, Mingdong Tang, Abdelrahman Osman Elfaki, Shixiang Wan and Junxing Lu MATEC Web of Conferences, 54 (2016) 07002 Published online: 22 April 2016 DOI: 10.1051/matecconf/20165407002