%0 Journal Article
%T Resear ch on Road Network Accessibility Based on Time Impedance Function<br>基于时间阻抗函数的路网可达性研究
%A ZHANG Shengrui
%A WANG Chaoshen
%A XU Jingcui
%A <br>张生瑞
%A 王超深
%A 徐景翠
%J 地理科学进展
%D 2008
%I 
%X The paper elaborates the accessibility concept and application scope in the different disciplines simply,analyzes the factors influencing accessibility,summarizes quantification method used commonly at the present stage in geometry topology,points out application conditions and insufficiency of the gravity model,the distance model,the accumulation opportunity method.In this foundation,discovers that quantification limiting to the spatial criterion can not respond the relation of the spatial network accurately,in view of this question,proposes the quantification model basing on the time impedance function,which takes the main variable by the practice capacity.This model can respond the spatial demand intensity indirectly.Then the paper introduces the node importance concept,it can reflect factors influencing accessibility in the road network even more directly,such as society,economy,transportation.This model can make up for the insufficiency of space and time method.
%K accessibility
%K measure method
%K geometry topology
%K time impedance function
%K node importance<br>可达性
%K 度量方法
%K 几何拓扑学
%K 时间阻抗函数
%K 节点重要度
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=869B153A4C6B5B85&jid=1328CFD3AA22A104E94CC0878E405FDC&aid=AF157A318A96A8A91358CFF0927C0531&yid=67289AFF6305E306&vid=DB817633AA4F79B9&iid=E158A972A605785F&sid=7555FB9CC973F695&eid=CDEBD1ACE0A4C1C1&journal_id=1007-6301&journal_name=地理科学进展&referenced_num=1&reference_num=22