Changhua Li

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Experimental Section Materials. N-Isopropylacrylamide (NIPAM, 97%, Tokyo Kasei Kagyo Co.) was purified by recrystallization from a mixture of benzene and n-hexane (1/3, v/v). Styrene (St, 99.5%, Beijing Chemical Factory) was successively washed with aqueous NaOH (5.0 wt %) and water, then distilled over CaH 2 at reduced pressure.(More)
— Aiming at the problems of the traditional feature selection methods that threshold filtering loses a lot of effective architectural information and the shortcoming of Bagging algorithm that weaker classifiers of Bagging have the same weights to improve the performance of Chinese architectural document categorization, a new algorithm based on Rough set and(More)
Based on Geography Information System and Virtual Reality technology, a new system of collaborative urban planning and design is established by publishing the future urban developing and planning information in the urban government Website. With the help of the plug-ins supplied by the system, the citizens concerning with public affairs can interact easily(More)
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