Preface for the special issue of ISGMA 2014

Jaehwan Kim1, Won-Shik Chu, Sung-Hoon Ahn2,3
1Department of Mechanical Engineering, Inha University, Incheon, South Korea
2School of Mechanical and Aerospace Engineering, Seoul National University, Seoul, South Korea
3Institute of Advanced Machinery and Design, Seoul National University, Seoul, South Korea