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In DHT (Distributed Hashing Table) based P2P system, load of some nodes is as much as O(logn) times the average. In this paper, an algorithm for ID allocation with complete knowledge is proposed. Based on hierarchical structured topology, even node distribution is achieved in key space according to top-down ID allocation. The algorithm can deal with issues caused by node departure. It is proved that...
For a long time, the lack of effective practices becomes a big obstacle to the management students' integrated application of management knowledge, which is dispersed in many courses. Focus on this issue, we have successfully developed the decision-making simulation training platform. The platform is composed of modern enterprises' operation decision-making simulation teaching software - the mass-competition...
In this paper, a congestion avoidance routing algorithm is proposed to solve congestion problems in satellite IP networks. Because of long delay of satellite IP networks, congestions degrade performances of networks dramatically which can not be solved by current routing algorithms proposed in previous works. The routing algorithm named AARA is based on globally optimizing ant-algorithm, which is...
The evaluation for Web service is essential to select Web services from many candidates, but current evaluation models evaluate Web service only by common service attributes, which can not meet the requirements of end users. We propose an evaluation model for Web service, which customizes reasonable attributes in different domains as evaluation factors, and computes the weights of evaluation factors...
Based on the analysis of the access control requirements for Web services, this paper points out the limitation of current access control models for Web services, and presents an attribute and role based access control model for Web services. The model automatically produces the role set, accomplishes the mapping among users, permissions and roles, and unifies the access control for Web services and...
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