This paper introduced the overview of citation analysis,and analyzed the characteristics and functions of citation map,which is one of the new functions of ISI Web of Knowledge.

This paper aims to apply the theoretical framework for analyzing the ideational meanings of visual images to the analysis of Chinese science textbooks,with the purpose of examining the ideational meaning construed by visual images and the text-image relations,as well as discussing the influence of register.

This paper described traditional text structure relation graph briefly, and then put forward the improvement method so that the topic of text which is analyzed by structure analysis is the sequence, the easy explanation and independent of fields.