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$$\uppi $$ π calculus is an effective tool targeted at the description and modeling of mobile concurrency systems. In this paper, a brief introduction of $$\uppi $$ π calculus is followed with the discussion on the $$\uppi $$ π -calculus-based description and modeling of the comparison operation, one of the basic computer operations. According to the two different ways of data...
Real-time video performance is difficult to guarantee under mobile communication environments characterized by loss-probability-varying transmission channel, heterogeneous networks, and various mobile devices of different access capabilities. In this paper, a novel attention-based network-aware robust video coding scheme mixing adaptive intra refresh with reference picture selection is proposed to...
Traditional digital signatures usually are computationally expensive and offer no anonymity to signers. It is not very applicable to mobile commerce, where lots of resource-constrained portable devices are involved. In this paper, we first propose a novel hash chain, called multipath hash chain. Then, a new signature protocol, that combines multipath hash chain with server-supported signature technique,...
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