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Cloud computing has emerged as a new computing paradigm and its economics has opened up a new research area. Though progress has been made toward address competitions among Cloud service providers (CSPs) or among network service providers (NSPs), few studies have focused on the relationship between CSPs and NSPs. In this paper, we investigate this problem and present a new economic model to characterize...
On the basis of some research work about the educational evaluation index system of electronic games,we establish an educational evaluation system for electronic games using BP neural network model.The system has self-learning and adaptive characteristics.After the BP neural network trained with the expert knowledge,it not only has the experience of experts, but also realizes the changes from the...
In CT-RSA 2008, Yu et al. proposed a family of three efficient Online/Offline signature schemes, which are especially suitable for the devices with limited computing capabilities. In this paper, we propose a new security model of Online/Offline signature. We find that Yu et al.' basic scheme is insecure under our model. We repair Yu et al.'s loophole by proposing a modified scheme.
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