%0 Journal Article
%T Negotiation-Based Dynamic Role Transition in Data Access across Multi-VOs<br>基于协商的跨社区访问的动态角色转换机制
%A FU Chang-Sheng
%A XIAO Nong
%A ZHAO Ying-Jie
%A CHEN Tao
%A <br>付长胜
%A 肖侬
%A 赵英杰
%A 陈涛
%J 软件学报
%D 2008
%I 
%X This paper proposes an approach to data access across multi-Vos(virtual organizations),using dynamic role transition under role-based access control model in data grid.A negotiation mechanism is introduced to establish the data access based on the trust of both VOs,which also sets up the role transition relationship between them.Once the negotiation succeeds,the dynamic role transition is controlled by several local policies according to the role owned by the user.
%K dynamic role transition
%K negotiation
%K VO(virtual organization)
%K data grid<br>动态角色转换
%K 协商
%K 虚拟社区
%K 数据网格
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=7735F413D429542E610B3D6AC0D5EC59&aid=8F8FB17FDE7D750E909DAEBAE8F4B767&yid=67289AFF6305E306&vid=2A8D03AD8076A2E3&iid=F3090AE9B60B7ED1&sid=9E7CF250B8428BE5&eid=9A0CD72416D5B565&journal_id=1000-9825&journal_name=软件学报&referenced_num=3&reference_num=13