Migration,self‐selection and income distributions

Self‐selection in rural–urban migration is examined using three datasets from rural and urban China in 2002. We construct a migrant sample including both migrants who converted their hukou status from rural to urban (permanent migrants) and those who did not (temporary migrants). We find a strong positive selection for permanent migrants, but the selection for temporary migrants is ambiguous. We reach these conclusions by comparing migrants' counterfactual wage densities, assuming they are paid as rural local workers, to actual wage densities of rural local workers. Our results imply that permanent migration has negative effects on rural human capital accumulation and income levels.     

供热价格制订的理论探讨

本文概述了供热价格的三种定价方法,对比分析了平均成本定价法和边际成本定价法,介绍了供热成本的主要影响因素,最后用边际理论对两部制热价的合理性进行了论证。     

Land Transport for Export: The Effects of Cost, Time, and Uncertainty in Sub-Saharan Africa

In Sub-Saharan Africa (SSA), inland export transport costs and time delays are much higher for landlocked countries, vary substantially between different geographic corridors, and exhibit substantial uncertainty. Unit costs and costs of time for land transport of exports are high for many agricultural products relative to metals and other high-value products. We illustrate systemic uncertainty in land and maritime transport for exporting by use of simulation. Relationships among uncertainty, infrastructure quality, and other features of logistics systems are highly non-linear, and can be potentially used to identify priorities for trade facilitation.     

西安城市竞争力的问题分析

城市竞争力是城市发展中关键的因素,它可以影响到所属区域的经济能力。西安是西部大开发的战略重点,所以抓住西部大开发的机遇,加快西安开放和现代化进程,提高城市竞争力就成为推进西部经济与社会发展的重大战略任务。本文通过分析西安城市发展中存在的问题,提出相应的对策。     

Be Berlin! Governing the City through Freedom

In this article, I examine how contemporary Berlin is governed, with a particular focus on the production of urban space. My points of reference are the term ‘government’ (as employed by Foucault) and the field of governmentality studies (where it is applied empirically). Based on a critical discourse and dispositive analysis of the city's current urban development policy, I propose that urban governance in Berlin may be analysed through the lens of three central dispositives: the dispositive of governing through citizenship; the dispositive of the creative city; and the dispositive of the social city. I discuss the characteristics of these dispositives of urban governance, drawing on a number of examples taken from the discipline of urban space production in order to look specifically at the aims and objectives of governance, its subjects and the ways it manifests itself. In conclusion, I suggest that the new forms of governance based on empowerment and cooperation have by no means replaced disciplinary technologies of governance, but are rather embedded within them.     

高层住宅三步节能工程质量控制

在全国范围内首次推行三步节能建设目标,尤其对民用建筑的屋面、门窗、采暖、地面和墙体等的节能工程及检测等领域,做出了多方位的研究和探索,取得的成效也颇为明显,同时也为我国寒冷地区的民用建筑节能设计、施工及验收等能够达到三步节能建设目标奠定了基础。三步节能工程中,施工是保证,材料是基础,设计是关键,检测是评价。笔者就高层住宅三步节能工程的质量控制进行了具体的阐述。     

浅谈城市道路设计

城市道路的建设发展将面临前所未有的机遇和挑战,方便快捷的交通能推动城市建设快步进入新纪元,因此城市道路规划、设计必须在可持续发展的战略原则。笔者叙述了城市道路的可持续设计要点,和城市道路相关可持续解决方案,及可持续设计理念在我国的应用现状及前景。     

Anatomy of Russia’s market segmentation1

Based on a relationship between price difference and demand difference among locations, the role of various market frictions in causing segmentation of the Russian goods market is analysed. The spatial sample covers most of Russian regions (70 of the 89); the data are annual, spanning 1992 to 2000. Spatial disconnectedness of regions is found to be responsible for about 70 percent of the average price differential, while the rest is caused by ‘artificial’ impediments to market integration such as regional protectionism, organized crime and intra‐region shipping conditions.