Qualitative spatial reasoning researches representation and process of human ’ s qualitative cognition for spatial objects and their relations in geometric space 定性空间推理研究的是人类对几何空间中空间对象及其关系定性认知常识的表示与处理,面对的是空间对象的定性特征和定性关系。
Spatial database can supply high - powered capability of storing and managing spatial object , well capability of organizing and restricting spatial data , optimized spatial analysis operation function 空间数据库能够提供高效的空间对象存储管理能力,良好的空间数据组织和约束能力,优化的空间分析操作功能。
By using the workspace object in your code , you can perform standard workplace web content management operations , such as retrieving , creating and deleting content and sitearea objects , and so on 通过在代码中使用工作空间对象，可以执行标准workplace web content management操作，如检索、创建和删除内容和sitearea对象，等等。
The system adopts spatial data model based on the vector data model ; topology relation model uses spatial data model combined with spatial data index ; and makes use of relation database to save spatial entity data 本系统采用基于矢量数据模型的空间数据模型；拓扑关系模型采用空间数据模型与空间数据索引结合；采用关系数据库存储空间对象数据。
In order to describe the character of xml document of geographic information , the paper compiles documents respectively in accordance with geo - spatial data transfer format of chinese , and compares with these two kinds of documents 根据中国地球空间数据交换标准及c - xml对同一空间对象分别编写了文档，比较了两种文档的不同，分析了表达地理信息的xml文档的特点。
This paper gives a new 3d spatial object model , iont which the 3d vector spatial data , digital elevation model and digital ground image data are integrated , and introduces com to the implementation of the spatial object model 摘要提出了一种新的基于3d矢量图形、数字高程模型与数字正射影像相结合的空间对象模型的设计思想，并将com组件技术引入到该模型的实现中。
Then , vrml is a kind of file format that is conjoint with the world information network and used for describing the 3d space and intermotive world . it can be used in building 3d spatial object , scene and virtual model for showing 而vrml是一套与全球信息网结合，用来描述三度空间互动世界的一种档案格式，可用来建立三度空间对象、景象、以及虚拟实境的展示模型。
( 3 ) the definition of spatial association rule is defined as the spatial and non - spatial relations between spatial objects . the forms of spatial association rule are abundant . two important types of spatial association rule are studied ( 3 )提出空间关联规则主要指空间对象之间的空间和非空间关系，指出空间关联规则的形式十分丰富，重点研究了两种形式的空间关联规则的挖掘。
Different from the researches of modeling , descriptions , representations , relations ’ analysis and processing of spatial objects in spatial reasoning researching , qualitative spatial reasoning faces to the qualitative characters and qualitative relations of spatial objects 不同于空间推理研究空间对象的建模、描述、表示及其关系的分析和处理,定性空间推理面对的是空间对象的定性特征和定性关系。
Then the distributed computing strategies of spatial information is discussed as a whole , the strategy together with the spatial object , spatial relationship , raster data is designed , realizes the distributed computing strategies and algorithm 在此基础上，对空间信息在网络环境下的分布式计算策略进行了统一研究，并分别对空间对象，空间关系，栅格数据设计，实现了相应的分布式计算方案与运算算法。
