基于网络的生活条件评价决策支持系统:以科伦坡市为例

E. Ekanayaka, G. Perera
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引用次数: 0

摘要

科伦坡市拥有来自世界各地的近80万人口,是亚洲大陆发展最快的城市之一。由于城市化,这个城市人口大量迁移。由于这个原因,城市的生活条件也因地而异。移民经常关心他们的流动性和获得不同公民服务的机会。因此,居住区域的选择对居民的身体、精神和经济都是一个重要的因素。然而,还没有采用系统的方法来评价这些生活条件。本研究阐述了利用ArcGIS的热点分析和网络分析扩展来推断城市不同街区的犯罪和六项基本公民服务的可达性,包括教育、医疗、公园、购物中心和应急响应(急救和救护车)。采用加权叠加法对以上标准和城市中最适宜居住的社区进行汇总。研究表明,最好的地区是“犯罪率最低、最容易获得上述所有基本服务的社区”。每个公民服务的可访问性按服务区域计算,并转换为栅格数据,栅格数据使用上述加权覆盖方法进一步将它们聚合为单个栅格。在将图形模型导出为python脚本后,进一步开发系统,根据用户的输入动态处理和返回率,最终用户获得最佳区域的结果。然后,生成的地图自动上传到地理服务器,用户可以在专用的网络平台上查看最终的宜居性地图。基于网络分析、多标准评价和决策支持系统等方法,本研究帮助特定用户根据选择的标准选择社区,并帮助城市规划者识别与每个标准相关的城市地区设计差距。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Web-based Decision Support System to Evaluate the Living Conditions: A Case Study of the Colombo City
Colombo city hosts almost eight hundred thousand people from various parts of the world and it is one of the fastest growing cities in the Asian continent. The city subjects to heavy migration because of urbanization. Due to this reason, the living conditions also vary from place to place in the city. The immigrants are often concerned about their mobility and accessibility to dierent civic services. Hence, selection of a living area becomes an important factor for an inhabitant physically, mentally and nancially. However, systematic methodology has not been implemented to evaluate these living conditions. This study explicates utilizing of hotspot analysis and Network Analysis extension of ArcGIS to extrapolate crime and the accessibility to six fundamental civic services including education, healthcare, public parks, shopping centres and emergency response (re ghting and ambulance) from dierent neighbourhoods of the city. Weighted overlay approach is utilized to aggregate above the criteria and nd the most inhabitable neighbourhoods in the city. The study indicates the best area as \neighbourhoods with least crime and easiest accessibility to all mentioned fundamental services". Accessibility to each civic service is calculated by the service area and converted to a raster data which further aggregates them into a single raster using the above mentioned weighted overlay approach. After exporting the graphical model as a python script, the system is further developed to handle and return the dynamic in uence rate based on the user inputs and ultimately the user obtains results for the best area. Then, the generated map automatically gets uploaded into the geo-server and the users can view the nal liveability map on a dedicated web platform. Based on the approaches such as network analysis, multi criteria evaluation and decision support system, this study assists in selecting a neighbourhood on the basis of selected criteria by a particular user and also helps urban planners to identify design gaps in urban areas related to each criteria.
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