Affiliations: Department of Information and Communication
Engineering, Faculty of Information Engineering, Fukuoka Institute of
technology (FIT), 3-30-1 Wajiro-Higashi, Higashi-ku, Fukuoka 811-0295, Japan.
E-mail: barolli@fit.ac.jp | Department of Computer Science and Information
Engineering, Tamkang University, 151 Ying-Chuan Road, Tamsui, Taipei, 25137,
Taiwan. E-mail: hhsu@cs.tku.edu.tw | Faculty of Software and Information Science, Iwate
Prefectural University, 152-52 Sugo, Takizawa, Takizawa-mura 020-0193, Iwate,
Japan. E-mail: shibata@iwate-pu.ac.jp