1. Fellow, ASCE
2. Sr. Res. Assoc., School of Civic Engrg. and Envir., Univ. of Western Sydney, New South Wales 2747, Australia.
3. Prof., Dir. of the Div. of Engrg., Univ. of Edinburgh, Edinburgh EH9 3JN, U.K.
4. Prof., School of Civic Engrg. and Envir., Univ. of Western Sydney, New South Wales 2747, Australia.