1. NIST Fellow, Engineering Laboratory, National Institute of Standards and Technology, 226-8611, 100 Bureau Dr., Gaithersburg, MD 20899.
2. Mathematical Statistician, Information Technology Laboratory, National Institute of Standards and Technology, 222-8980, 100 Bureau Dr., Gaithersburg, MD 20899.
3. Structural Research Engineer, Engineering Laboratory, National Institute of Standards and Technology, 226-8611, 100 Bureau Dr., Gaithersburg, MD 20899 (corresponding author).
4. Structural Research Engineer, Engineering Laboratory, National Institute of Standards and Technology, 226-8611, 100 Bureau Dr., Gaithersburg, MD 20899.