Objective : to explore anatomical variations of the anterior ethmoid sinus in chinese people and to provide reference for clinical management 摘要目的：探讨国人前组筛窦的相关解剖变异，为临床手术提供参照数据和资料。
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From the point of railway modernization management we can use mathematical method to mine useful information from magnanimity waybill data and develop waybill information synthetic application system which serves for the transportation management and decision - making by applying data mining technology and consulting data warehouse solution 从铁路现代化运营的角度来看，可以应用数据挖掘技术，参照数据仓库解决方案，对货票系统长期积累的海量数据用数学方法进行挖掘，将数据处理的重点从传统的业务处理扩展到对运输数据的联机分析处理，建造以数据挖掘技术为核心的决策支持系统? ?货票信息综合应用系统，为运输管理和决策服务。
