1. Senior Lecturer in Geotechnical Engineering, Dept. of Engineering, Univ. of Exeter, Harrison Building, North Park Rd., Exeter, Devon, EX4 4QF, U.K.
2. Dept. of Engineering, Univ. of Exeter, Harrison Building, North Park Rd., Exeter, Devon, EX4 4QF, U.K.; currently, Lecturer, Higher College of Technology, Ministry of Manpower, Sultanate of Oman, P.O. Box 35, Post Code: 133, Al-Khuwair, Muscat.
3. University Research Fellow, Dept. of Engineering, Univ. of Exeter, Harrison Building, North Park Rd., Exeter, Devon, EX4 4QF, U.K.