基于本体和Agent的地理空间信息语义共享

地理空间信息语义共享是地理信息系统的重要研究内容。语义参照系统主要用于在地理信息的生产者和用户之间解释专题数据的意义，实现对不同语义数据的集成。本文分析了地理空间信息共享的含义和层次，借鉴语义网研究思想，建立了地理空间信息语义共享的总体框架。提出采用本体概念和方法，形式化定义领域知识，解决地理空间信息研究和应用中存在的地理实体语义不明确问题。采用基于Agent的信息查询和语义映射，实现在不同用户间对地理空间信息的共同理解和认识。     

地理空间信息服务模式的创新性研究

针对当前地理空间信息服务存在的服务理念缺失、服务对象单一、服务内容单调、服务手段滞后、技术运用不充分等弊端,以地理空间信息技术为基础,与管理学、经济学、统计学等多学科进行交叉与融合,成功设计了地理空间信息服务"5C"原则,从理论、技术和应用三个层面创新性地提出了面向政府决策、企业管理和公众认知的空间信息服务模式,扩展了空间和时间的服务范围,解决了全社会信息化新形势下地理空间信息服务建设的瓶颈问题。本研究成功构建了一种新的地理空间信息服务模式,将有力地促进地理信息行业以及地理信息科学的发展。通过创新的地理空间信息服务,有助于提高政府管理水平与决策能力,促进"两化"融合与企业信息化建设,满足社会公众的认知需求,更好地服务于国民经济发展和社会信息化。     

《地理信息世界》2008-2009年度选题方向

随着地理空间信息研究与应用的不断深入与普及,近年来地理空间信息领域在战略发展、理论与技术研究、工程应用等方面涌现出了许多新的热点问题,为了促进国内同行对这些热点问题的交流与     

《地理信息世界》2008-2009年度选题方向

随着地理空间信息研究与应用的不断深入与普及,近年来地理空间信息领域在战略发展、理论与技术研究、工程应用等方面涌现出了许多新的热点问题,为了促进国内同行对这些热点问题的交流与     

上海城市空间基础地理信息的建设与发展

城市是信息化进程最快、信息交换程度最高的区域，它对空间信息的需求呈现出比例尺大、更新周期短、社会对空间信息需求量大等3个方面特点。本文对上海城市空间基础地理信息的建设历程进行了回顾，并就现阶段主要任务和发展作了展望。     

国家基础地理信息数据库建设和提供服务政策

描述地球表面的基础地理信息数据是国家空间信息基础设施建设中的重要组成部分，基础地理信息数据库建设是一项基础性和公益性系统工程。本文回顾了我国基础地理信息数据库建设的历程，介绍了基础地理信息数据产品的特点以及其提供服务政策。     

北京市综合遥感影像数据库系统

1系统简介 1．1系统建设背景 地理空间数据库是电子政务四大基础数据库之一，也是重要的信息化基础设施。随着北京市信息化建设的不断深入，地理空间信息资源的开发利用需求日趋紧迫。为满足“数字北京”、“数字奥运”建设的要求，北京市政府自2001年开始就开展了年度航空拍摄，以获取高分辨率遥感影像数据，同时，采购其他相关的卫星遥感影像，为政府各部门提供基础地理空间信息支撑。传统的数据管理和共享方式日益不能适应需求，北京市综合遥感影像数据库系统的建设就是为了有效解决海量遥感数据的存储、管理问题，[第一段]     

地理信息软件标准体系建设与发展分析

地理信息软件是地理信息产业的重要组成部分。当前迫切需要加快标准化建设工作,建立一套与产业发展相适应的完整、系统、协调的标准体系框架,推动地理信息软件标准化工作的有序发展。本文首先分析了当前地理信息软件标准化建设工作中存在的若干问题,包括现行标准的适用性、系统性与先进性的不足,软件标准化与产业发展联动的缺乏,企业参与标准化建设的积极性不高等。在分析当前地理信息产业发展的标准化需求的基础上,本文提出了地理信息软件标准体系建设的初步思路,形成了地理信息软件标准体系的基本框架,编制了体系框架图与分类表,并且展望了未来地理信息软件标准化的发展方向。     

面向电子政务的自然资源与地理空间数据整合方法研究

自然资源与地理空间数据库是电子政务建设的四大重要基础信息资源库之一,它是一个多层次、综合性的空间信息与属性信息集成的数据库。具有多业务类型、多尺度、多源性等特点。由于历史、数据政策、管理体制和技术等方面的原因,目前这些信息资源普遍是分散的、异构的和不同格式的,是仅与局部范围信息化应用相适应的“信息孤岛”。因此,通过对地理空间信息资源的整合,开发与提升新的应用,在电子政务建设中实现跨部门、跨地区、跨行业、跨应用系统之间的信息交换、数据共享、协同处理成为十分迫切的要求。本文将重点讨论面向电子政务的地理空间信息数据整合的原则与方法,信息共享及数据交换。以及地理空间信息数据整合与更新的技术路线与实现方法等问题。     

为地理知识库构建位置本体

随着网络中各种地理相关的应用越来越多,要想解决地理空间信息语义层次上的应用问题,就需要用到地理知识库.其中本体是地理知识库的核心.地理本体是研究地珲信息科学领域内小同层次和不同应用方向上的地理空间信息概念的详细内涵和层次关系.本文为地理知识库构建了极具实用性的的位置本体,并详细阐述了基于ETL的数据知识库从资源采集,到数据集成,最后到本体构建的过程.     

New patterns of urban development in China

1　ＩＮＴＲＯＤＵＣＴＩＯＮＣｉｔｙｐｌａｙｓａｎｉｍｐｏｒｔａｎｔｒｏｌｅｉｎｔｈｅｐｒｏｃｅｓｓｏｆｒｅ ｇｉｏｎａｌｅｃｏｎｏｍｉｃｄｅｖｅｌｏｐｍｅｎｔ .Ｆｏｒｉｎｓｔａｎｃｅ ,ｉｎ 1996,ｔｈｅｔｏｔａｌｍｕｎｉｃｉｐａｌａｒｅａｓｏｆ 666ｃｉｔｉｅｓｏｎｌｙｃｏｖｅｒｅｄｔｈｅｐｒｏｐｏｒｔｉｏｎｏｆ 18.12ｐｅｒｃｅｎｔｉｎｎａｔｉｏｎａｌｔｅｒｒｉｔｏｒｙ ,ａｎｄｂｕｉｌｔ ｕｐａｒｅａ 1.8ｐｅｒｃｅｎｔ .Ｂｕｔｔｈｅｙｐｒｏｄｕｃｅｄｔｈｅ 68.63ｐｅｒｃｅｎｔｏｆＧＤＰ(ＧｒｏｓｓＤｏ…     

ASSESSING THE QUALITY OF URBAN LIFE IN CHINA

The quality of life is considered as the distributed degree of social resources with significance to the urban residents as a whole. There are three features about the study of the quality of life by means of objective method. First, objective methid is based on the government publication of statistics from which the information of social environment influencing people's life can be obtained by systematic analysis. Second, as a result of social policy and planning development, the quality of life studied by objective method can provide scieatific basis for regulating and making policy. Third, the objective method emphasize that the improvement of the quality of life mainly depends on the effort from the government so as to set up a coordinatly developed environment of community.On the basis of relevant data from the 1991 Yearbook of Urban Statirtics of China published by Statistics Press of China, and using spss, the quality of urban life in China is evaluated. Seventy four cities are selected from 467     

EVOLVEMENT OF URBAN SPATIAL STRUCTURE AND MAIN DRIVES IN WUXI, CHINA

1IN TR O D U C TIO NC hina, as a developing country, is experiencing rapidpopulation grow th and land expansion,w hich has gen-erated considerable governm entalconcernsand scholar-ly attention (FA ZA L,2000).R esearchers have revealeda m assive increase i…     

ON SPATIAL AND TEMPORAL CHANGES OF PRESENT URBAN POPULATION IN CHINA

Since 1949, great changes have taken place in the amount and distribution of China's urban population. From the analysis on the change in total urban population, it can be learnt that urbanization progress can be controlled mainly by social-economic development and government policy through influencing the migratory growth of urban population and the number of organic cities. In the period 1949-1990, the states of megalopolises had gone up; medium-sized cities had decreased. It is estimated that the total urban population of China will still increase at a rapid speed in the coming 10 years; there will not be great changes in grade system of urban scale; and urban population may shows a tendency to move to coastal area.     

Factors affecting formation and development of the urban industrial district in China — A case study on caohejing hi-tech park in Shanghai

In China, the urban industrial district is usually an organic concentrated district including many factories that are in big, middle or small size, and are coordinated in the process of production, or use infrastructure in common. The formation and development of the urban industrial district in China are affected by not only general factors such as natural factor, transportation factor, labour factor, ecologic factor, but also special factors such as agglomeration factor, technologic factor and social factor. To the district’s formation, both the social factors and natural factors are important, especially the attitude the government have towards the district and the regional natural condition. But the agglomeration, market and transportation costs here are not as important as those in the traditional Industrial Location Theory. Now we must pay great attention to these three factors owing to the new economic conditions in China. In the development of the district, the main factors are technology and agglomeration. This indicates that the technologic factor is gradually the essential condition in the development of the district. Besides, we must also know the affection of the ecologic factor in the development of the district. According to the reality of Caohejing district, this paper gives every factor mark in the Analytic Hierarchy Process (AHP). With the result of the AHP, some suggestions have been put forward to Caohejing Hi-Tech Park and other urban industrial districts as well.     

CHALLENGES AND PROBLEMS：CHINA‘S URBAN GOVERNANCE

Chinaˊs urban reforms have brought social progress and development,but a comprehensive national system of social welfare(for example,unemployment insurance,pensions,medical care and public housing)for new migrants from rural areas is lacking.One of the most remarkable changes in Chinese cities in the last decade was a change in so-cial“equality“,with the rise of new poverty both in individual communities and some social groups in urban society.Howev-er,there is little social assistance and public infrastructure for the migrants.Governments or communities or individual should pay attention to the control of new urban poverty and new slums.This paper consider that it is necessary to launch a successful policy,which include mainly:1)accommodating urban growth through low-cost investment projects;2)ur-ban economy depends heavily on successful macroeconomic policy;3)to broaden the three channels linking adjustment to the incidence of urban poverty;4)to restructure urban economic based on the high or new technology;5)to coordi-nate relationship between urban economic growth and environment management for sustainable development of Beijingˊs metropolitan fringe.     

CHALLENGES AND PROBLEMS: CHINA′ S URBAN GOVERNANCE

China′ s urban reforms have brought social progress and development, but a comprehensive national system of social welfare (for example, unemployment insurance, pensions, medical care and public housing) for new migrants from rural areas is lacking. One of the most remarkable changes in Chinese cities in the last decade was a change in social " equality", with the rise of new poverty both in individual communities and some social groups in urban society. However, there is little social assistance and public infrastructure for the migrants. Governments or communities or individual should pay attention to the control of new urban poverty and new slums. This paper consider that it is necessary to launch a successful policy, which include mainly: 1) accommodating urban growth through low-cost investment projects; 2) urban economy depends heavily on successful macroeconomic policy; 3) to broaden the three channels linking adjustment to the incidence of urban poverty; 4) to restructure urban economic based on the high or new technology; 5) to coordinate relationship between urban economic growth and environment management for sustainable development of Beijing′ s metropolitan fringe.     

A STUDY ON THE FORECAST AND REGULATION OF COORDINATED DEVELOPMENT OF URBAN ENVIRONMENT AND ECONOMY IN GUANGZHOU

ＡＳＴＵＤＹＯＮＴＨＥＦＯＲＥＣＡＳＴＡＮＤＲＥＧＵＬＡＴＩＯＮＯＦＣＯＯＲＤＩＮＡＴＥＤＤＥＶＥＬＯＰＭＥＮＴＯＦＵＲＢＡＮＥＮＶＩＲＯＮＭＥＮＴＡＮＤＥＣＯＮＯＭＹＩＮＧＵＡＮＧＺＨＯＵＹａｎｇＳｈｉｈｏｎｇ（杨士弘）（ＤｅｐａｒｔｍｅｎｔｏｆＧ...     

URBAN PLANNING： A TOOL FOR URBAN POVERTY ALLEVIATION IN SUDAN

In the past few dacades, urbanization and urban growth have been increasing rapidly in many of the developing countries. It is expected that over 50% of the world population will live in cities in 2005. The growing trend indicates that as many as one fifth of all households still remain with housing tenure problems, which they try to solve through very expensive rentals, insecurity, socially and environmentally-hazardous squatting or unhealthy overcrowding, sometimes ending up with none at all. And hence, proper planning is necessary in urban development policies to improve human settlement managements in a sustainable way. This article has tried to handle urban poverty in the Sudan to a reasonable level of detail. It dealt with selected areas with regard to promotion of sustainable human settlement. The study managed to identity some recent progress in Sudanese human settlements, that is, however, still accompanied by numerous serious instances of decline in the urban environment, especially that of the greater Khartoum.Such instances of environmental deterioration are profiled and analyzed by the study with respect to all human settlement aspects of management, land-use, infrastructure, energy and transport. The paper‘s conclusion emphasized that improving all these aspects is of high priority.     

URBAN RENEWAL AND DEVELOPMENT OF SHANGHAI CITY

刘塔ＵＲＢＡＮＲＥＮＥＷＡＬＡＮＤＤＥＶＥＬＯＰＭＥＮＴＯＦＳＨＡＮＧＨＡＩＣＩＴＹ￥ＬｉｕＴａ（ＮａｎｊｉｎｇＩｎｓｔｉｔｕｔｅｏｆＧｅｏｇｒａｐｈｙａｎｄＬｉｍｎｏｌｏｇｙ，ｔｈｅＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆｓｃｉｅｎｃｅｓ，Ｎａｎｊｉｎｇ２...