1. Department of Mechanical Engineering, Sogang University, Seoul, 121-742, Republic of Korea
2. Department of Mechanical Design and Production Engineering, Konkuk University, Seoul 143-701, Republic of Korea
3. Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 2V4, Canada
4. Department of Mechanical
Engineering, Hangzhou Dianzi University, Hangzhou, 310018, China
5. School of Mathematics and Statistics, The University of Melbourne, Victoria, 3010, Australia
6. Department of Mechanical Engineering, University of Utah, Salt Lake
City, Utah 84112, United States