1. National Cheng Kung University, No.1, University Road Tainan City 701 Taiwan.
2. National Central University, No.300, Jhongda Road Taoyuan 32001 Taiwan.
3. The University of Arizona, 1133 E. James E. Rogers Way, 214 Harshbarger Bldg 11 Tucson AZ 85721‐0011.
4. National Chiao‐Tung University, No. 1001, University Road Hsinchu 30010 Taiwan.
5. Chung Chou University of Science and Technology, No. 2, Lane 2, Sec. 3, Shanjiao Road Changhua 510 Taiwan.