Study of the storage of GIS data based on Oracle Spatial 10g
wang ya-wen1; rong xiao-feng1; li jian-yuan2(1.school of computer science & engineering; xi an technological university; xi an 710032; china; 2.school of engineering; shanxi normal university; linfen 041004; china)
α-decomposition of intuitionistic fuzzy relation
guo zhi-lian1; 2(1.school of e.& a.; northwest university of political science and law; xi an 710063; china; 2.school of math.& i.s.; shaanxi normal university; xi an 710062; china)