Based on the Tibet Autonomous Region's statistic yearbooks and the data from the two household surveys in 2002 and 2004, this paper has comprehensively anal
Three different spin-lattice relaxation times (T1) of water were obtained in activated alumina-water slurry system, which indicate that there exist three states
We present a new approach to reduce the communication overhead caused by threshold cryptography using modified multicast protocol and certificate proxy technolo