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The construction and effective application of net based educational resources are of great importance for e-learning. SOA (service oriented architecture) enables the reuse and share of net based educational resources by publishing the resources as web services. However, frequent identity authentications in resources access among different providers take up overfull system resources and lower the implementation...
Digital right management can be used on digital copyright protection, access to control, trust management and other areas. Right expression language is an important component of DRM system. The purpose of this paper is to research the application of REL in education.It gives the introduction of development of right expression language firstly, and describes in detail the development process of MPEG-21...
Web service is a new service-oriented computing paradigm which poses the unique security challenges due to its inherent heterogeneity and highly dynamic nature. A key challenge in Web service security is the design of effective access control schemas. However, traditional role-based access control (RBAC) model can not meet the dynamic and context sensitivity features of Web service demands. In this...
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