1. Sirindhorn International Institute of Technology, Thammasat University, Pathum Thani, Thailand
2. School of Information Science, Japan, Advanced Institute, of Science and Technology, Ishikawa, Japan
3. Sirindhorn International, Institute of Technology, Thammasat University, Pathum Thani, Thailand
4. NECTEC, National Science and Technology, Development Agency, Pathum Thani, Thailand