This paper describes the geometric and statistical properties of areal object under randomness. In order to describe formally such a uncertain topological relat
In recent years, Web services and Peer-to-Peer (or simply P2P) appear as two of the hottest research topics in network computing. On the one hand, by adopting a
A new algorithm, called as Double-Epoch Algorithm (DEA) is proposed in GPS rapid positioning using two epoch single frequency phase data in this paper. Firstly,
To meet the authorization administration requirements in a distributed computer network environment, this paper extends the role-based access control model with
At present E-commerce system tends to become more complex, and traditional system designing methods can not fufil the need of E-commerce system, thus requiring