China Unicom, the largest WCDMA 3G operator in China, meets the requirements of the historical Mobile Internet Explosion, or the surging of Mobile Internet Traffic from mobile terminals. According to the internal statistics of China Unicom, mobile user traffic has increased rapidly with a Compound Annual Growth Rate (CAGR) of 135%. Currently China Unicom… (More)
The direct P(4) activation using group 3 metal complexes was achieved for the first time under mild conditions. Two P(n)-containing products, P(8)(4-) and P(7)(3-), were isolated and characterized for scandium; however, P(7)(3-) was the sole product for yttrium.
This paper presents an improved C-means clustering algorithm based on ACO. The proposed method use pheromone to evaluate individual colony's iterative result. In contrast with the existing C-means clustering algorithm, method in the paper need not appoint the number and pre-centers of clusters beforehand and it updates pheromone according to the transfer… (More)