基于GIS平台的多源地学数据管理系统

为了有效保存、充分利用地质勘查数据,建立了基于GIS(Geographic Information System)的平台大庆探区外围盆地多源地学数据管理系统。该系统是大庆探区外围盆地地学数据库的组成部分,空间数据库使用GIS平台,属性数据库以Access 2003作为底层数据库,采用MO(Map Object)控件,应用DAO (Data Access Object) 技术,通过Visual Basic语言实现了系统的各项功能。该系统具有对原始空间数据和属性数据进行添加、删除、查询和维护等功能,并开发了常规重力数据处理功能,可对原始重力的异常数据进行解析延拓、垂向导数、水平方向导数、归一化总梯度处理等。该系统可对研究区的地质、物探、化探等多源地学数据进行综合分析与对比,为确定油气资源区的位置、数量、质量提供了基础信息和技术支持。

On Hamming Gracefulness of Quadrilateral Cactus Graph

Hamming gracefulness of graphs problem, in computer networks graceful embedding aspect, has the good application value and the broad research prospect. So far, few related works has been done in domestic and abroad. Therefore, we introduce and establish the labeling function method to prove that the graphs G+C₄ were hamming-graceful, which hamming-graceful graph G random vertex hangs a circuit C₄ obtained graphs. An important conclusion was proved from this all connections quadrilateral cactus graph are hamming-graceful graphs in which graph C₄ is an 4-vertex circuit.