Xianping Tao

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Context Awareness and Mobility are two fundamental characteristics of ubiquitous and pervasive computing, where users may wander among smart spaces equipped with kinds of devices providing types of services with respects to the changing contexts of the users, the environments and the services themselves. Generally, an underlying infrastructure or middleware(More)
With the rapid advances of wearable sensors and wireless networks. There is a growing research interest in building Body Area Sensor Network (BSN) systems to support applications such as human activity recognition and daily health monitoring. The main challenges of building a BSN system include: First, the wearable sensor nodes are highly constrained in(More)
Privacy risks result in great barriers to the long-term success of pervasive computing. Unfortunately, related researches can still be considered in its infancy. Access control is widely used for privacy protection. However, traditional access control methods can only negating or approving accesses, greatly lacking flexibility. In this paper, we introduce(More)
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