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The traditional distributed individual rekeying protocols are inefficient and have high rekeying cost, while batch rekeying protocols are vulnerable to collusions attack. Aiming at those drawbacks, three algorithms are presented: 1) MST algorithm, which is used to merge two subtrees; 2) CARR algorithm, which is resistant to collusions attack, and can avoid a renewed node to be rekeyed more than once;...
We present a hierarchical structure or multi-scales infectious diseases analysis based on meta-population model with heterogenous connectivity and mobility patterns, and study the effect of multi-scales hierarchical connectivity pattern of complex social network on the propagation dynamics of epidemics. The simulation results show that the scale of growth time of outbreaks is inversely proportional...
Contemporary face recognition algorithms rely on precise localization of keypoints (corner of eye, nose etc.). Unfortunately, finding keypoints reliably and accurately remains a hard problem. In this paper we pose two questions. First, is it possible to exploit the gallery image in order to find keypoints in the probe image? For instance, consider finding the left eye in the probe image. Rather than...
In order to obtain good performance for inverters and to solve the problem of time delay in digital control, a novel dual-loop control based on state observer with repetitive compensation is proposed. Dual-loop control for PWM inverter can achieve fast dynamic response and inhibit nonlinear load disturbances while observer can solve the problem of duty-cycle regulation caused by sampling and computing...
The search for new nonvolatile universal memories is propelled by the need for pushing power-efficient nanocomputing to the next higher level. As a potential contender for the next-generation memory technology of choice, the recently found ??the missing fourth circuit element??, memristor, has drawn a great deal of research interests. In this paper, we characterize the fundamental electrical properties...
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