Acknowledgement
The research described in this paper was financially supported by the Natural Science Foundation, the John A Blume Earthquake Engineering Center, and the John Blume and James Gere Fellowships at Stanford University. The author gratefully acknowledges the contribution of the doctoral students involved in the research - Krishnan Nair, Pooya Sarabandi, Alan Cheung, Hae-Young Noh, Konstantinos Balafas, and Yezheng Liao. In addition, the help of colleagues who enabled us to participate in various laboratory tests or provided key data for testing the algorithms is greatly appreciated. They include Professor Emeritus Seiid Seiidi of the University of Nevada, Reno, the late Professor Steve Mahin of the University of California, Berkeley, and Professor Emeritus H.C. Loh of the National Taiwan University.
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