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Simulations Towards the Dynamic Optimal Planning of Plural City-Systems

多元城市系统动态优化规划的模拟

基本信息

批准号：
01300002
负责人：
KOHNO Hirotada
金额：
$ 4.03万
依托单位：
The University of Tsukuba
依托单位国家：
日本
项目类别：
Grant-in-Aid for Co-operative Research (A)
财政年份：
1989
资助国家：
日本
起止时间：
1989 至 1991
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01300002/
关键词：
Accelerating System for revealing Agglomeration-effects Plural City-System Imputed Price of Public Facilities Comprehensive Developmental Plan all over the Country Large-scale Composite Urban Redevelopment Traffic Assingnment on the Network of T

项目摘要

Our model on the Simulathions Towards the Dynamic Optimal Planning Plural City-Systems can be described as one of the typical frontiers of the Third Generation Model in the New Urban Economics, in that it possesses the following characteristics :1) it is a simulation system model by which large-scale numerical analyses can be done ;2) the non-malleable capital accumulation process is set out endogenously and explicitly ;3) it is not a one commodity (industry) model, but a multi-industry and multi-region model ; and4) it treats fundamentally the scale and agglomeration economies which are the intrinsic qualities of all the mammoth cities.If the bottleneck of linear programming software can be solved (upper limit : 2, 000 rows x 6, 000 columns in the data density of one hundreds), our model can tackle multi-cities and different scaled ones. By applying the model to the various different scaled cities over the country concurrently, it will be possible to develop a dynamic optimization mod … More el of both regional development and urban re-growth, along the lines shown in the figures 4 to 6 in Kohno[alpha]*.In Figure 6, it can be seen that the social benefit evaluation curve of a mammoth city shifts downward, while that of a rural city moves slightly upward, and the social benefit in the shaded area will not be realized if the public authorities concerned adopt a obstinate decentralisation policy with respect to industry and population and contract the scale of momoth cities to foster rural regions. on the other hand, it will be seen that, owing to various subsidization policies, the scale of rural city may expand to areas which would not, otherwise, have been developed, and the social benefits shown by the shaded areas will be generated less efficiently at the expense of other urban regions (opportunity costs). These are the consequences that are likely to be brought by development programmes such as the National Comprehensive Development plan of Japan.As the latest and rigorous results, please refer to the reference[1].Note(*) : [alpha]H, Kohno et al., "Dynamic Optimisation of Rural Development and Urban Regrowth" in Prof. Dr. Peter Friedrich and Ian Masser (Eds), International Perspectives of Regional Decentralisation, Nomos Verlagsbesellschaft, Baden-Baden, 1987, pp. 254-277. Less

我们提出的多元城市系统动态优化规划模拟模型可以说是新城市经济学第三代模型的典型前沿之一，它具有以下特点：1)它是一个可以进行大规模数值分析的模拟系统模型，2)内生性和显性地阐述了不可延展性的资本积累过程，3)它不是一个商品(行业)模型，而是一个多行业、多区域的模型；如果能解决线性规划软件的瓶颈问题(数据密度上限：2,000行×6,000列)，我们的模型可以处理多个城市和不同规模的城市。通过将该模型同时应用于全国不同规模的城市，将有可能开发出一个动态优化模型…在图6中可以看到，巨型城市的社会效益评估曲线下移，而农村城市的社会效益评估曲线略有上移，如果有关公共当局在工业和人口方面采取顽固的分权政策，收缩单亲城市的规模来培育农村地区，阴影地区的社会效益将无法实现。另一方面，可以看到，由于各种补贴政策，农村城市的规模可能会扩大到原本不会发展的地区，而阴影区所显示的社会效益将以牺牲其他城市地区为代价，效率较低(机会成本)。这些都是日本国家综合发展计划等发展计划可能带来的后果。作为最新和严格的结果，请参阅参考文献[1]。注(*)：[Alpha]H，Kohno等人，在Peter Friedrich和Ian Masser(编辑)教授的《区域分散的国际视角》中，《农村发展和城市再生的动态优化》，Nomos Verlagsbeellschaft，Baden-Baden，1987，第254-277页。较少