We compare the intensity assess form used in China mainland and intensity assess form used in Taiwan region,we select the peak ground motion of horizontal acceleration(PGA) as our criterion and define a new assess form which has 10 levels and each level has certain PGA bound.

On Theodore Roosevelt's Protective Policy of Natural Resources;

Theodore Roosevelt s Different Attitudes towards Chinese and Japanese Immigrants: Comparing his two Annual Messages Delivered to the Congress;

Theodore Roosevelt and American Muckraking Movement;