Union algorithm for polygon set based on multi-level grid(基于多级格网的多边形集合求并算法研究) by HUANGZhi(黄志), ZHANGZhelun(张哲伦), ZHANGFeng(张丰), CHENMing(陈明), LIURenyi(刘仁义)

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Heterogeneous land-use database integration based on OEM and XML(基于OEM模型与XML的异构土地利用数据库集成方法) by FANGXuan(方旋), ZHANGZhelun(张哲伦), DUZhenhong(杜震洪), ZHANGFeng(张丰), LIURenyi(刘仁义)

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