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In this paper, a digital signature with high security based on location information is proposed. Based on the characteristics of mobile terminal, we proposed the scheme, taking network attack and physical attack into consideration, to insure the data on mobile terminal to insure user's right. By analyzing related location data to calculate user's often area, we judges whether user's current access...
With respect to conventional energy, the significant advantages of new energy are the balanced regional distribution and the large resource extent which, to some extent, could be regarded as infinity compared with human's demand for energy. The development and utilization of new energy are beneficial to optimize energy consumption structure, to protect ecological environment, and to guarantee energy...
A locally produced Vi polysaccharide vaccine against typhoid fever was licensed in China following two placebo-controlled, efficacy trials conducted in the early 1990s in Baoying, Jiangsu Province, and Quan-zhou, Guangxi Province. The two trials each enrolled over 80,000 participants and followed participants for 12 and 19 months post-vaccination, respectively. To define the long-term efficacy of...
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