1. Graduate Research Assistant, Dept. Civil, Geological, and Mining Engineering, Ecole Polytechnique, Montreal, Canada H3C 3A7.
2. Professor, Dept. Civil, Geological, and Mining Engineering, Ecole Polytechnique, Montreal, Canda H3C 3A7.
3. Professor, Dept. Civil, Geological, and Mining Engineering, Ecole Polytechnique, Montreal, Canada H3C 3A7.
4. Professor, Dept. of Civil and Environment Engineering and Center for Advanced Technology for Large Structural Systems (ATLSS), Lehigh University, Bethlehem, PA 18015.