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- urban spatial database 城市空间数据库
- Selectivity Estimation is the base of spatial database query optimizer. 选择性估计是设计空间数据库查询优化器的基础。
- Jing Ning, born in 1963.Professor and Ph.D. Supervisor.His main research interests include GIS and spatial database. 景宁,1963年生,教授,博士生导师,主要研究方向为地理信息系统、空间数据库。
- multiacid 2R-brilliant green 多远酸2R亮绿染色
- Spatial database for railway is the foundation of Railway Geographic Information System (RGIS). 摘要铁路空间数据库是铁路地理信息系统(RGIS)的基础。
- City development is a continuous course, urban spatial structure writes down the orbits of human activities and city development in a unique way. 城市发展是一个连续的过程,城市空间结构则以其独特的方式记录着人类活动和城市发展的轨迹。
- It can handle spatial data and spot any-shape clusters in a noised spatial database by dividing them into clusters with high enough density. 该算法将具有足够高密度的区域划分为簇,并可以在带有“噪声”的空间数据库中发现任意形状的聚类。
- The urban spatial expansion is the requirement and materialization of urban development, and the expansion is a space-time process . 本文以南京市为例探讨了其在80年代以来城市空间扩展及结构演化的现象和特点。
- SDM is different from the classical data mining in that spatial database have its own characters compared with relational database (RDB). 空间数据有许多不同于非空间数据的特性，使得空间数据挖掘与一般数据挖掘相比亦有其鲜明的特征。
- This paper classify a series of methods on spatial database index, and introduce the QR-tree index structure with very large spatial database. 在综述现有空间数据库索引技术的基础上，提出了一种面向大型空间数据库的QR-树索引方法。
- The data storage is based on RDS, design spatial database under the direction of object oriented concept and realize object storage. 数据的存储是以现有的关系数据库为基础,以面向对象的思想为指导来设计空间数据库,实现对象的存储。
- A study on the urban spatial structure ofthe east of the city zone of Guangzhou is a furtherimplementation of the strategy of "eastward devel-opment" of the city. 对广州市东部地区的城市空间结构进行研究,是对城市“东进”战略的进一步深化。
- However there are some problem in the content and system of spatial database course and the standard teaching mode has not been formed. 但由于种种原因，空间数据库课程在课程体系、课程内容、教学模式等方面仍然存在许多问题和不足。
- Inspired by Lefebvre’s ideology of “The production of space”, this paper aims to find the relationship between the spatial division of labor and the urban spatial organization. 劳动空间分工是生产空间组织所产生的社会空间格局的一种特殊形式，它表征着不同场所活动之间的新关系，社会组织的新格局。
- ArcGIS extends ArcView by providing multi-userediting, advanced analysis, Internet services, and highperformance spatial database services. 在 ArcView 中，无论用view，table，chart，layout或script哪一种方式来对数据进行检索、查询、统计分析或生成图，都是通过对专题(theme)，特征(feature，又作要素)，属性(attribute)，字段(field)进行操作来实现。
- In response to the above phenomena, this thesis analyzes the impact ofadministrative center's move-out on urban spatial structure with Hefei city as acase study. 本文针对这一现象，结合对安徽省合肥市实际建设状况的案例研究，分析了城市行政中心外迁对城市空间结构可能产生的影响。
- With the penetration of geographical information system in people's lives,NL-oriented spatial database query has been noticed. 随着地理信息系统深入应用于人们的日常生活,面向自然语言的空间数据库查询的研究越来越被人们重视。
- The information technology is having great influence on all sides of city when it accelerates the development of city, and makes urban spatial structure change greatly. 迅速发展的信息技术在促进城市发展的同时也在影响着城市的方方面面，从整体上促使城市的空间结构发生巨大的变化。
- Analyzing the effects of information to urban spatial structure, this paper cognizes the reconstitution of urban spatial structure and the shift principle of urban basic spatial. 在分析信息化对城市空间结构影响的基础上，认知了信息化背景下城市空间结构的重构过程和城市基本功能空间的变化原理。
- Based on the platform of new scientific paradigm and making use of analogies and induction,the integrality and complexity of urban spatial structure are interpreted. 基于科学新范式平台,把城市空间结构纳入这一科学范畴,运用归纳和类比的方法,阐释了城市空间结构的整体性和复杂性,辨析了两者内在的异质同构关系。
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