With hypermedia technology the structure of a publication can be re_arranged to accommodate more easy cognition of the idea and concept by linking the concepts which are represented by different medi
We have determined approximate average rates of deformation in the Qinghai_Tibet plateau and its margins from the GPS data for last 10 years and the moment tensors from earthquakes between 1900 and 19
This paper discusses the rules representing relief with contour lines and methods for automatically constructing relation of contour lines.Meanwhile,the improvement of existent methods for extracting