1. Lecturer, Faculty of Civil Engineering, Ho Chi Minh City Univ. of Technology, Ho Chi Minh City, Vietnam; formerly, Construction Consultant, Jax Kneppers Associates, Inc. (JKA), 2125 Ygnacio Valley Rd., Suite 200, Walnut Creek, CA 94598 (corresponding author).
2. President, Jax Kneppers Associates, Inc. (JKA), 2125 Ygnacio Valley Rd., Suite 200, Walnut Creek, CA 94598.
3. Construction Consultant, Jax Kneppers Associates, Inc. (JKA), 2125 Ygnacio Valley Rd., Suite 200, Walnut Creek, CA 94598.
4. Professor of Construction Management, Dept. of Civil and Environmental Engineering, Univ. of California, Berkeley, CA 94720; and President, The Ibbs Consulting Group, Inc.