A comparative site evaluation study for relocating Japanese government agencies out of Tokyo

As a national project of Japan, plans for the relocation of several government agencies out of Tokyo have been ongoing. This paper is concerned with the problem of site selection for this project. The National Land Agency, the agency responsible for this project, has declared that the process of site selection should be rational, open to the public and easily understandable. In an effort to meet these requirements, we propose a consensus-making method for reaching a group decision, based on a combination of the analytic hierarchy process (AHP) and the Assurance Region model of data envelopment analysis (DEA). Several strategic uses of these methodologies, e.g., Delphi procedures, are also discussed. Based on these analyses, the “Wise Men” Committee for deciding the best site has chosen two from among ten contenders, one from the North-East and the other from the Central part of Japan, as candidates for the best relocation site. We could not discriminate between the two with respect to the multiple criteria chosen for evaluating sites. The Committee recommended the two sites to the Prime Minister at the end of December 1999. The Prime Minister reported this conclusion to the Diet. This topic is currently the focus of political discussions in the Diet. In this report, the authors summarize the decision-making processes that the Wise Men Committee followed, putting emphasis on the methodological aspects.     

等截面斜腿刚构桥的几何布局优化

以应力平方均值最小为优化目标，建立了跨越V形谷的等截面斜腿刚构桥在列车荷载和自重共同作用下的布局静力优化的数学模型，采用直接搜索法进行了设计变量的寻优。     

Privatization and contaminated site remediation in Central and Eastern Europe: Do environmental liability policies matter?

This paper examines the effects on site remediation decisions after state-owned firms have been privatized of providing environmental information to potential investors and undertaking site remediation planning prior to privatization. The literature suggests that to minimize distortions created by uncertain environmental problems, governments should invest in environmental information for potential investors, inventory problems and develop plans for remediation. One of the believed benefits is a higher probability of site remediation, because with uncertainty resolved potential conflicts after privatization are less likely. Few countries in Central Europe, which has experienced both environmental problems and privatization on enormous scales, have adopted this advice. Using firm-level data, empirical analysis is presented, which suggests providing only information to investors is insufficient to spur remediation. Inventorying site contamination and planning remediation prior to privatization is a much more effective measure. Combining provision of information with remediation planning is found to be the most powerful policy package for encouraging remediation.     

卫生检疫的创始原因和发展进程

通过考证卫生检疫创始的原因和发展进程,得出检疫起源于中世纪黑死病时期,并且欧洲社会、经济、宗教、神学等方面因素的综合作用,促进了卫生检疫的产生;检疫的场所在历史上经过了多次变迁,其称谓也随着历史的发展而有所变化。卫生检疫的内容和制度随着历史发展和社会需要逐渐完善,时至今日,海港检疫已成为世界通用的检疫方式。     

有机生长理念下物流园区弹性布局方法初探

物流园区作为城市中特殊的功能区,对提升城市经济结构、完善城市功能布局、促进资源有机整合有着积极的促进作用。然而,物流园的发展是一个动态过程,既包括应对市场环境变化所产生的自身功能优化,又包括应对城市空间扩张所产生的城市功能置入,因此,合理的园区空间布局规划应具备一定的弹性。本文基于有机生长理念,从功能分区、用地分类、道路交通、地块划分等方面对物流园区的弹性布局方法展开探讨,以期为科学合理的园区规划提供一定的技术支撑和借鉴。     

南通市综合交通枢纽布局优化对策

为推进南通市交通运输转型发展,优化交通基础设施空间一体布局,在经济增长中发挥好支撑引领作用,在阐述南通市综合交通枢纽布局现状、发展定位和存在问题的基础上,从强化对外综合运输通道建设、畅通周边城市城际交通网络、提升市域集散网覆盖通达水平、大力发展多式联运系统和促进综合货运枢纽高效衔接5个方面提出南通市综合交通枢纽布局优化对策。综合交通枢纽的布局优化,有利于完善南通市的枢纽功能,进一步提升其在全国综合交通体系中的战略地位,发展枢纽经济,实现经济转型,加快打造成长三角北冀经济中心。     

鄂尔多斯铁路枢纽客运系统布局方案研究

为加强鄂尔多斯铁路枢纽建设,提高鄂尔多斯与外界联系通道的运输能力,完善铁路枢纽内客运系统布局,基于鄂尔多斯铁路枢纽现状分析,结合城市现状规划和枢纽客运预测,从铁路枢纽内线路走向、铁路枢纽内客运站布局、枢纽内高速铁路车站选址3个方面,对鄂尔多斯铁路枢纽客运系统布局方案进行研究。经综合比选分析,分别采用沿既有铁路通道的中线引入方案、高速铁路"两站"格局方案及新设东胜北站。在此基础上,提出鄂尔多斯铁路枢纽内客运站建设方案,不断提高鄂尔多斯与外界联系通道的运输能力。     

高速铁路动车组检修资源布局优化研究

高速铁路网的日趋完善,高速列车开行数量的进一步增加,对高速铁路动车组检修资源布局提出新的要求。为合理优化动车组检修资源布局,提高动车组检修效率,在分析我国动车段和动车运用所管理模式及布局方案的基础上,将动车组检修资源布局优化问题转化为基于多基地车辆路径运用的基地选址问题,基于"备选运用所-运输需求-动车组运用"间的关联关系构建动车组运用检修接续网络,建立动车组检修资源布局优化模型。以某区域的铁路网为例,利用近远期规划优化动车组检修资源布局,验证模型有效性,为今后动车组检修资源布局优化提供参考。     

如何用遗传算法解决公路客运枢纽选址问题

文中首先分析了公路客运交通枢纽选址问题的研究思路.然后从客运枢纽为了达到方便客户、优化路网、减少投资等综合交通最优化的角度建立了教学模型,并给出了用遗传算法求解的程序流程图.最后通过某城市的客运枢纽规划实例,表明此理论型布局能够满足人们的出行需求,显示了该方法的科学性和可行性.     

城市密集建设区绿色空间网络的规划布局探索——以重庆市主城区为例

本文是从城市规划的角度,来研究城市密集建设区内的绿色空间网络规划所涉及的相关理论基础和实践中的规划布局要点.在理论上认为连接性、服务覆盖面和多功能复合性是规划布局的要素,并认为景观生态学的景观安全格局和网络效应原理可以用来指导规划布局.在重庆市主城区的实践探索中,提出了体现“梳理——评价——辨析——成果”思路的工作程序...