Institution: | (1) Department of Statistics and Operations Research, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia (e-mail: lotftadj@ksu.edu.sa), SA;(2) Department of Statistics, National Taichung Institute of Technology, No. 129, Sec. 3, Sanmin Rd., Taichung 404, Taiwan, R. O. C. (email: jauchuan@mail.ntit.edu.tw), TW |