1. Temporary: Postdoctor Fellow, Hydraulics Research and Testing Facility (HRTF), Dept. of Civil Engineering, Univ. of Manitoba, Winnipeg, Manitoba, Canada, R3T 5V6; Permanent: Assistant Professor, Civil Engineering Dept., Assiut Univ., Assiut, Egypt (corresponding author).
2. Professor, Hydraulics Research and Testing Facility (HRTF), Dept. of Civil Engineering, Univ. of Manitoba, Winnipeg, Manitoba, Canada, R3T 5V6.