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Food Chemistry, 2020
Heavy metal contamination is one of the most pressing concerns for food security and human health. Understanding the risk to human health posed by soil pollution that enters the food chain is paramount.
Shunan Zheng +3 more
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Heavy metal contamination is one of the most pressing concerns for food security and human health. Understanding the risk to human health posed by soil pollution that enters the food chain is paramount.
Shunan Zheng +3 more
semanticscholar +1 more source
Urban unemployment, agglomeration and transportation policies
Journal of Public Economics, 2000We study the role of unemployment in the context of the endogeneous formation of a monocentric city in which firms set efficiency wages to deter shirking. We first show that, in equilibrium, the employed locate at the vicinity of the city-center, the unemployed reside at the city-edge and firms set up in the city-center.
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Consumption variety and urban agglomeration
Regional Science and Urban Economics, 2003Abstract We consider two types of consumers, who prefer different classes of non-tradable goods. Each consumer’s utility increases with the number of different goods available, and increases more with an increase in the variety of goods he prefers.
Amihai Glazer +2 more
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Heterogeneous firms, urban costs and agglomeration
International Journal of Economic Theory, 2017AbstractThis paper explores how the interaction between firm heterogeneity, urban costs and transport costs determines spatial configuration across regions within a simple general equilibrium model. We shed light on how firm heterogeneity affects the centrifugal and centripetal forces and reshapes the spatial configuration of an urban space economy. We
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Urban Wage Inequality and Economic Agglomeration
SSRN Electronic Journal, 2016This paper explorers the impact of interplay between transport costs and commuting costs on urban wage inequality and economic agglomeration within a new economic geography model. As in former study, we find that workers tend at the same time to agglomerate in order to limit transport costs of manufactured goods and to disperse in order to alleviate the
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2010
城市群的基本概念，可以概括为：在特定的地域范围内具有相当数量的不同性质、类型和等级规模的城市，依托一定的自然环境条件，以一个或两个超大或特大城市作为地区经济的核心，借助于现代化的交通工具和综合运输网的通达性，以及高度发达的信息网络，发生与发展着城市个体之间的内在联系，共同构成一个相对完整的城市“集合体” 《中国城市群》不仅总结分析了我国城市群生长发育的因素、空间扩展过程与类型等，而且对它们的演变规律、发展个性与共性特征作了比较全面的分析论证，达到了一定的深度。作者博采众家之长，参阅与引用了许多中外代表性著作，综合地概括了城市群区域发展的动态特征以及城市与区域发展的相互关系，表达了不少新颖的观点。同时，本书对我国六大超大型城市群（沪宁杭、京津唐、珠江三角洲、山东半岛、辽宁中部与四川盆地 ...
Chan, RCK, Yao, SM, Zhu, YM
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城市群的基本概念，可以概括为：在特定的地域范围内具有相当数量的不同性质、类型和等级规模的城市，依托一定的自然环境条件，以一个或两个超大或特大城市作为地区经济的核心，借助于现代化的交通工具和综合运输网的通达性，以及高度发达的信息网络，发生与发展着城市个体之间的内在联系，共同构成一个相对完整的城市“集合体” 《中国城市群》不仅总结分析了我国城市群生长发育的因素、空间扩展过程与类型等，而且对它们的演变规律、发展个性与共性特征作了比较全面的分析论证，达到了一定的深度。作者博采众家之长，参阅与引用了许多中外代表性著作，综合地概括了城市群区域发展的动态特征以及城市与区域发展的相互关系，表达了不少新颖的观点。同时，本书对我国六大超大型城市群（沪宁杭、京津唐、珠江三角洲、山东半岛、辽宁中部与四川盆地 ...
Chan, RCK, Yao, SM, Zhu, YM
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