1. Professor Emeritus, Dept. of Civil and Environmental Engineering, Hong Kong Univ. of Science and Technology, Clear Water Bay, Hong Kong SAR, China (corresponding author).
2. Distinguished Professor, Dept. of Civil and Environmental Engineering, Univ. of California, Davis, CA 95616; Emeritus Professor, Dept. of Mechanics, School of Applied Mathematical and Physical Sciences, National Technical Univ. of Athens, Zographou, Athens 15773, Greece; Leading Research Scientist, Institute of Thermomechanics, Czech Academy of Sciences, 18200 Prague 8, Czech Republic.