Song Ding

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" Cloud-based " Internet services rely on the availability and reliability of managed data centers. Recent events indicate that data centers tend to create centralized points of failure, and providing resilience to large-scale faults remains a significant challenge for both providers and users of cloud in-frastructures. Running data centers also incurs high(More)
We propose a binary decision fusion rule that reaches a global decision on the presence of a target by integrating local decisions made by multiple sensors. Without requiring a priori probability of target presence, the fusion threshold bounds derived using Chebyshev's inequality ensure a higher hit rate and lower false alarm rate compared to the weighted(More)
We consider a network of sensors distributed in a target area providing environmental measurements that are subject to normally distributed, independent additive noise. Each sensor node applies a threshold rule to the measurements to decide the presence of a target; the distance to the target together with the threshold value determines its hit and false(More)
BACKGROUND Educators continue to search for better strategies for medical education. Although the unifying theme of reforms was "increasing interest in, attention to, and understanding of the knowledge base structures", it is difficult to achieve all these aspects via a single type of instruction. METHODS We used related key words to search in Google(More)