1. University of the Ryukyus,Electrical and Electronics Engineering,Okinawa,Japan
2. National Institute of Technology,Sasebo College,Nagasaki,Japan
3. University of Texas at El Paso,Electrical and Computer Engineering,Texas,USA
4. Financial University,Research Center of Monetary Relations,Moscow,Russia
5. Fuji Electric Co., Ltd,Tokyo,Japan
6. University of the Ryukyus,Electrical and Systems Engineering,Okinawa,Japan