A Study on Identification of City-Regions and Location of Urban-Facilities, Evakuation of Road-Network

本研究的目的是开发方法来识别城市rogions和定位城市设施。每种方法可以总结如下;1.城市-区域的识别（1）城市-区域（同心环）用相互作用数据来识别，以使内部区域和外部区域之间的区别明显。(2)每一个同心环的性质被表示为一个统一的指数，这是计算与相互作用的数据。内部区域和外部区域之间的区分度由相对于相邻单位指数定义的边界指数给出。(3)城市区域通常有多个边界，这些边界包围着中心城市。(4)除上述项目外，还确定了城市区域，反映了地理效应和其他城市区域的影响。此外，多个边界结构的选择中的灵活性允许根据各种边界来表征整个区域。城市设施的位置（1）几个城市设施将位于候选地点中的某些地点。应确定的设施数量是项目成本的函数。(2)设施位置的影响由居住在“服务半径”距离内的居民所获得的总收益来表示。因此，设施选址被表示为一个优化问题。(3)每个居民所获得的利益用一个“满意度”指数来表示。在这项研究中，满意度指数与居民与某个设施之间的距离直接相关。

The purpose of this study was to develop methods both for identifying city-rogions and for locating urban facilities. Each method may be summarized as follows;1. Identification of City-Regions (1) City-regions(concentric rings) are identified with interaction data so as to make apparent the differrence between inner- and outer-regions. (2) The nature of each concentric ring is represented as a unity-index which is calcurated with interaction data. The degree of distinction between inner-and outer-regions is given by a boundary-index defined with respect neighboring unity-indeces. (3) City-regions usually have plural boundaries witch enclose the centre-city. (4) In addition to above items, city-regions are identified reflecting both geographical effects and influences due to othe city-regions. Further more, flexibility in the selection of the plural boundary structure allows for characterizations of an entire region according to various purposes.2. Location of Urban Facilities (1) Several urban facilities are to be located at certain sites among the candidate sites. The number of facilities which should be located is a function of the cost of the project. (2) The effects of facility location are represented by the total benefits received by residents who live within a "service radius" distance. Consequently, facility location is expressed as a optimization problem. (3) The benefit recetived by each resident is represented by a "Satisfaction" index. In this study, the Satisfaction index is directly related to the distance between ones resident and a certain facility.