Dear staff, I am so sorry. I changed my email address(Jin@nautilus.org) to jinchen@nautilus.org. Would you please send me the paper to the new email address. Thank you very much! Jin _______________________________________ Jin Chen The Nautilus Institute 125 University Avenue Berkeley, CA 94710-1616 USA (510) 295-6121 * Fax: (510) 295-6130 jchen@nautilus.org http://www.nautilus.org