空腹桁架结构受力机理研究分析

空腹桁架是转换结构的一种基本型式。以往对空腹桁架中构件截面的优化方案是通过采用不同截面尺寸的多个方案进行分析对比而得到。采用适当假定,通过理论分析,得到了空腹桁架结构在竖向荷载作用下的理论解,清楚地解释了空腹桁架的受力机理,为空腹桁架的设计和方案比较提供了理论依据。同时对设计中应注意的问题提供了理论解释。     

区域协调发展的政策途径

分析了我国行政区经济利益博弈成为区域协调的障碍,建设区蔓延、区域产业布局各自为政,重大设施协调困难、重复建设严重等区域发展中存在的困境。探索区域协调发展的四种政策途径:第一,编制有效的区域协调规划;第二,建立有权威的区域协调政府;第三,设置功能单一的特别区及专门机构;第四,促进市场化改革,增进城际合作。     

浅谈城市滨水空间开发策略

通过对滨水空间资源价值的系统分析评价,了解其价值的开发条件和约束条件,制定了成功的开发策略,以指导规划和建设活动理性而有效地开展。     

影响我国房地产价格变化因素分析

近年来．我国房地产价格持续上涨。为了平抑房价。国家采取了调控措施．房地产价格上涨速度虽然减缓．但价格仍居高位。文章从宏观调控下我国房地产投资的特点出发。通过对影响我周房地产价格变化因素进行分析，力图探明住房价格持续上涨问题的根源，并提出相应的政策建议。     

珠江压咸补淡跨地区应急调水的政策探讨

为了避免咸潮对珠江三角洲及港澳地区供水安全的潜在威胁,2005年珠江流域管理机构组织实施了珠江压咸补淡跨地区应急调水.笔者把珠江压咸补淡应急调水界定为水行政部门组织实施的一项公共政策,运用公共政策理论对此次应急调水所隐含的政策选择依据与价值取向进行了剖析.立足一般公共政策所应该遵循的效率与公平原则,阐述了在今后调水政策设计过程中开展成本效益分析和引入水权交易机制的必要性.     

Housing Theory,Housing Research and Housing Policy

Abstract

Jim Kemeny in 1992 criticized existing housing research for neglecting social theory and being overly positivist and policy focused. The result has been a strengthening of the conceptual basis of housing research in general, but also a growing schism between researchers who focus on policy relevancy and those that pursue more theoretical work. This paper challenges this schism and argues for theoretically based and policy-relevant research. First, the paper argues that the policy-making process is complex and can vary between different countries, situations and over time. Therefore, it is argued that many styles of research can influence policy in the right circumstances. Second, the paper challenges the idea that there can be theoretically free housing research arguing that all research has a theoretical foundation even though in many studies it is not explicit. Finally, the paper engages with the debate about where theory for housing research should come from and what it would look like.     

Towards more Social Cohesion in Large Post-Second World War Housing Estates? A Case Study in Utrecht,the Netherlands1

The last few years have seen many studies of large post-Second World War housing estates. At present they are often the most deprived areas of European cities. The turnover of the population on these estates is characteristically rapid, leading to considerable socio-economic and socio-cultural changes and a multi-ethnic neighbourhood. Such areas often have to contend with severe physical, social and economic problems and the consequent dissatisfaction of the residents. This combination of rapid and selective population turnover and increasing numbers of problems may well affect aspects of social cohesion within these neighbourhoods, particularly the social networks. This process is regrettable, because social cohesion is regarded in a positive light, something that enhances the quality of life. Stimulating social cohesion is therefore an important objective of many policies that focus on large post-Second World War housing estates. The authors have found it interesting to discover how important social cohesion is in the opinions and the lives of the inhabitants rather than the policy makers. In their opinion, urban policies focus on social cohesion while the inhabitants' views of its relevance are unknown. On the basis of this paper, certain aspects of social cohesion in large post-Second World War housing estates appear to be valued, but housing market behaviour, such as residential moves, is hardly affected by aspects of social cohesion. Other aspects, such as moving to a better house, are much more relevant. The results may put into doubt the stress placed in urban policies on social cohesion.     

Mortgage interest deductibility and homeownership in the Netherlands

This paper considers the growing amount of mortgage interest paid in the Netherlands against the background of its full fiscal deductibility, increasing homeownership rates, innovation in the mortgage market, and changes in the Dutch income tax system. Its main conclusion is that arguments in favor of fiscal deductibility are weak. Since the deductibility puts pressure on the income tax base, it is likely that sooner or later the facility must be limited or abandoned.

谈现行政策对防水工程质量的影响及对策

对渗漏的治理,多数着眼于技术问题的探讨,有专家提出了“政策为先导”.本文分析了现行政策的局限性,提出了防水工程应引入市场经济,建立赔偿制度,实行施工负责制的建议,并要求通过防水专业培训的强制手段,提高专业防水施工人员的素质.     

城市规划的信用:演变、危机与抉择

城市规划是一种具有“社会契约”性质的公共政策,理应接受信用程度的检讨。在当前我国公共讨论中,城市规划获得的认可和支持度都较低,表征的是我国城市规划的信用不足问题。本文探讨了中国城市规划的信用不足的原因,发现主要有三个方面:一,城市规划体系形成的“制度模糊”,以及制度演变的路径依赖,造成规划的信用下滑;二,不同尺度的规划信用不同,并且,具有创新潜力的小尺度城市规划也面临信用危机;三,城市规划制度变迁和不同尺度规划中公众参与的同时缺位是决定性因素。因而,需要以提升城市规划的信用绩效为目标,调整城市规划的“制度性”设计:城市规划应是约束社会主体的规划;强化向权利讲述真理;推动制度完善下的治理优化。