Spatial segregation and urban structure

In this paper, we develop a model of spatial segregation mediated by competitive land prices. Agents of two groups consume city land and benefit from social interactions. Because of cultural or ethnic differences, intragroup interactions are more frequent than intergroup ones. When group sizes differ, population groups sort into distinct neighborhoods. We characterize two‐ and three‐district urban structures. For high population ratios or strong intergroup interactions, only a three‐district city exists. In other cases, multiplicity of equilibria arises. Both groups generally rank these equilibria differently. However, when group sizes are similar, all individuals agree on which spatial equilibrium is best.     

Multi-Firm City Versus Company Town: A Micro Foundation Model of Localization Economies

When do we have a company town and when do we have a multi‐firm city? In this paper I analyze the impact of public infrastructure investment decisions on types of cities in a decentralized urban system. This is done in a one‐sector spatial general equilibrium model of a closed economy. Investment in public infrastructures reduces the fixed set up cost of all firms within the city resulting in multi‐firm cities. Thus, in this approach localization economies are modelled explicitly instead of assuming that larger industrial size within the city enhances productivity. On the other hand, when the infrastructure is not provided, a company town will be formed by a developer because of the fixed cost required by each firm. The decision of whether to invest in the provision of public infrastructures depends on the type of city that will provide households with the highest utility. This paper characterizes the conditions that lead to each of the two equilibrium configurations.     

A diasporic right to the city: the production of a Moroccan diaspora space in Granada,Spain

In this paper, I bring together ideas of ‘diaspora space’ and ‘the right to the city’ and empirically demonstrate how the formation of diasporas is frequently dependent on migrants attaining certain rights to the city. These rights, I argue, are conditioned and attained by the interplay of urban structural context with the place-making strategies of migrants. Drawing on 8 months of ethnographic fieldwork, I demonstrate that Moroccan migrants in Granada, Spain, have achieved a partial right to a neighbourhood of the city, producing a multi-sensory, self-orientalised diaspora space. First, I show that certain urban conditions in Granada provided a foothold for Moroccan migrants to begin to form a diaspora and transform urban space. Second, I demonstrate that through the mobilisation of a strategically self-orientalised cultural capital, the diaspora have partly appropriated the valuable history of Al-Andalus, a key component in the city’s tourist imagery. These factors and strategies have enabled Moroccan migrants to gain a right to have a visible presence in the city, a right to produce and transform urban space and a right to spatalise diverse identities – all key rights, I argue, in the formation of a diaspora.     

丝绸之路经济带城市群空间联系特征比较研究——以我国西北地区城市群为例

以丝绸之路经济带暨第二亚欧大陆桥沿线的我国境内西北地区城市群为研究对象,构建城市综合竞争力指标,运用修正的引力模型、隶属度模型及潜力模型等对西北地区城市群空间联系特征进行实证分析,得出结论:伴随该区域城市群的迅速发育,城市间最短时间距离缩短,通达性大为改观;城市群城市空间联系强度水平较差,空间分异呈由东向西逐渐递减的趋势,受最短时间距离影响明显;城市群内城市受其中心城市的辐射带动作用不足;西北地区城市群潜力值整体呈东西两头好、中间凹陷的"哑铃型"状态,各城市群内城市集聚能力差异明显。     

Cultural planning in Ontario,Canada: arts policy or more?

Cultural planning is often explained as a strategic approach to urban cultural development; an approach that involves the ‘mapping’ and leveraging of a wide range of ‘cultural resources’ (arts, culture, and heritage). However, it is increasingly being questioned whether cultural planning is anything more than a fairly traditional arts policy with a different name. In particular, it has been observed in Australia that cultural plans usually fail to address more than arts sector concerns. The objective of this paper is to investigate whether this assessment applies to cultural planning practice in Ontario, the province at the forefront of the current ‘municipal cultural planning’ push in Canada. An examination of all cultural plans in Ontario’s mid‐size cities and interviews conducted with municipal staff members overseeing these initiatives shows that whereas several municipalities do follow an arts‐driven policy agenda, this is not the case with most mid‐size cities in the province.     

LOCAL PUBLIC SERVICE PROVISION AND SPATIAL INEQUALITY IN CHINESE CITIES: THE ROLE OF RESIDENTIAL INCOME SORTING AND LAND‐USE CONDITIONS

Spatial inequality refers to unequal access to local public services between high‐ and low‐income households in relation to their residential locations. We examine two hypotheses regarding the role of income sorting and land‐use conditions in shaping spatial inequality in Chinese cities, where residents have little direct influence on local public service provision. First, in the presence of resource indivisibility, travel cost, and location‐based rationing, scarcity of public‐service resources in a city makes access to public services more uneven across neighborhoods, thus exacerbating income sorting and spatial inequality in the city. Second, the exacerbating effect of resource scarcity is mitigated by land‐use conditions that limit income sorting. Estimates of willingness to pay by households of different income levels for public‐service resources across cities corroborate both the exacerbating effect of resource scarcity and the mitigating effect of inclusive land‐use conditions.     

A Critical Comment on the Taylor Approach for Measuring World City Interlock Linkages

In the study of economic‐geographic structures, the shifting focus from the national state to the city and its region has highlighted the lack of reliable interurban data sets. The abundance of usable data sets on international structures and flows has no counterpart when studying interurban relations, which makes it hard to draw any extensive conclusions regarding the structure of world city networks. Instead of relying on available data sets, Peter Taylor has developed a method for generating data sets that, it is argued, can be used in research on the structure of the world city network. In this approach, actors are defined as cities with internal attribute service values, values reflecting the presence of different transnational service‐producing corporations in each city. The structural values between each pair of cities are then established by a mathematical formula based on the service value of each firm in each pair of cities. This procedure can be criticized on two accounts. First, although internal attributes on exceptional occasions can be used as a proxy and as a rough estimate for structural values, such studies must have a firm theoretical underpinning in order to be valid from a network‐analytical perspective. If not, such generated structural values become nothing more than a function of internal attributes, thus losing the whole basic idea of social network analysis. Second, the Taylor function used for generating structural values can be questioned. Why should a large presence of TNC offices in a pair of cities imply a larger city interlock link than would be the case between a high‐ranked city and a low‐ranked city, as the city with the larger service value probably serves cities with a lower service value with economic command, control, and support functions?     

A Topological Representation for Taking Cities as a Coherent Whole

A city is a whole, as are all cities in a country. Within a whole, individual cities possess different degrees of wholeness, defined by Christopher Alexander as a life‐giving order or simply a living structure. To characterize the wholeness and in particular to advocate for wholeness as an effective design principle, this article develops a geographic representation that views cities as a whole. This geographic representation is topology‐oriented, so fundamentally differs from existing geometry‐based geographic representations. With the topological representation, all cities are abstracted as individual points and put into different hierarchical levels, according to their sizes and based on head/tail breaks—a classification and visualization tool for data with a heavy tailed distribution. These points of different hierarchical levels are respectively used to create Thiessen polygons. Based on polygon–polygon relationships, we set up a complex network. In this network, small polygons point to adjacent large polygons at the same hierarchical level and contained polygons point to containing polygons across two consecutive hierarchical levels. We computed the degrees of wholeness for individual cities, and subsequently found that the degrees of wholeness possess both properties of differentiation and adaptation. To demonstrate, we developed four case studies of all China and U.K. natural cities, as well as Beijing and London natural cities, using massive amounts of street nodes and Tweet locations. The topological representation and the kind of topological analysis in general can be applied to any design or pattern, such as carpets, Baroque architecture and artifacts, and fractals in order to assess their beauty, echoing the introductory quote from Christopher Alexander.     

Cultural legacies and electoral performance of ethnic minority parties in post‐communist Europe

Although there are numerous contributions on ethnic electoral politics, relatively little research has been devoted to explain the scope of success of ethnic minority parties. This article addresses the issue within the bounds of post‐communist Europe, paying particular attention to the effect of cultural legacies. It was confirmed, first of all, that ethnic parties are likely to emerge only if their titular minority has a number of voters larger than what is necessary to obtain parliamentary representation. Otherwise, the most successful were the ethnic parties representing the minorities characterised by legacy of regional domination, that is, those whose members had once enjoyed a dominant position as a ruling nation on a given territory (e.g. Hungarians in Slovakia). The second‐successful were the parties representing homeland minorities, that is, those which have resided on a given area for more than two centuries, but have never been members of a ruling nation. The parties representing diaspora or immigrant minorities were the least successful. Further research could assess the importance of these factors in other regions of the world.     

以西安为中心的关中城市群的结构优化及其方略

城市群是城市化发展的新形态,也是区域经济发展中的"发展极"。以西安为中心的关中城市群已经形成了西部经济"发展极"的初始条件,成为了西部经济发展的核心地带。以西安为中心的关中城市群的基本现状是:城市群总规模较小,中等城市数量少,小城镇发展滞后。从目前提高竞争力和带动西部经济发展的目标来看,面临着完善空间结构、功能结构和时序结构的任务。在空间结构优化方面,要强化西安中心城市的作用,培育二级中心城市,完善小城镇建设体系,以西安为中心构筑四大城镇群。在功能结构完善方面,要强化城市群区的联系,进行城市群中各个城市功能和性质的重新定位;从时序结构的完善来看,要以增强中心城市的吸引力和辐射力为目标,从近期、远期和远景三个方面安排时序结构。     

City networks: breaking gridlocks or forging (new) lock‐ins?

There is today a global recognition that we live in an ‘urban age’ of near‐planetary urbanization where cities are at the forefront of all sorts of agendas. Yet little attention is offered to the active role of cities as political drivers of the urban age. There might today be more than two hundred ‘city networks’ globally, with thousands of para‐diplomatic connections actively defining relations between cities, international organization and corporate actors. This actively networked texture of the urban age shapes all areas of policy and, not least, international relations, and holds much promise as to possible urban solutions to global challenges. Based on an overview of a representative subset of this mass of city‐to‐city cooperation (n=170), this article illustrates the landscape of city networking, its issue areas and institutional shapes, and its critical features. As we argue, city networks today are faced by a crucial challenge: while trying to overcome state‐centric ‘gridlocks’ cities are, at the same time, building both political–economic as well as very material ‘lock‐ins’. We need to pay serious attention to this impact of city diplomacy in international affairs, developing a greater appreciation of the path dependencies and responsibilities this diplomatic activity purports.     

Cultural icons and urban development in Asia: Economic imperative,national identity,and global city status

Global cities are characterized by the multiplicity of flows that they are implicated in – flows of people, goods, services, ideas, and images. Yet, global cities do not derive their status only on the basis that they are networked nodes. They also require particular forms of cultural capital. Cities with global aspirations have thus increasingly recognized the need to accumulate cultural capital, for which one means is to create new urban spaces, in particular, new cultural urban spaces (e.g. grand theatres, museums, libraries). These often monumental structures are intended to support a vibrant cultural life, in order to attract and sustain global human and economic flows. In this paper, I examine the efforts by Shanghai's, Singapore's and Hong Kong's governments to develop cultural icons as part of the strategy to help their cities gain global city status, and in the process, constructing shared national and city identities. I illustrate how such efforts are not universally interpreted in the manner intended, with city populations sometimes protesting, sometimes simply oblivious. At the same time, I argue that such strategies to achieve global city status are sometimes at odds with projects of nationhood.     

Urban smartness and sustainability in Europe. An ex ante assessment of environmental,social and cultural domains

The aim of the paper is to define a set of smartness and sustainability indicators applicable to European cities and to assess their outcome in an ex ante perspective with regard to the implementation of Europe 2020 strategy. Following the DPSIR (Driving forces, Pressures, State, Impact, Response) model, we select a bundle of indicators for three relevant sustainability domains (environmental, social and cultural), which are proper to the smart city definition. Then we define groups of homogeneous cities for each domain by using a two-step cluster analysis. Results show the existence of heterogeneous groups of cities that are likely to become smart in the cultural domain, side by side with groups of more developed urban areas that have acquired a substantial advantage in the environmental and social dimensions.     

矿业城市类型及发展现状比较研究

按照本文确定的矿业城市标准,我国现有矿业城市的数量为129个。本文对按照矿业类型划分的八类矿业城市发展现状进行比较。总体上看,矿业城市的发展状况比非矿业城市差,低于全国城市的平均水平;在矿业城市中,不同类型发展情况不同,石油城市在经济效益、财政收入、基础设施建设、在岗职工工资及利用外资能力等方面都是发展最好的,并且许多方面超过了全国城市的平均水平,其余类型的矿业城市发展较差,但不同类型发展状况不同,即使同一类型的矿业城市发展状况也不一样。矿业城市发展状况的不同为制定矿业城市转型政策提供了基础和依据。     

世界城市体系研究的定量化趋势及其方法演化

20世纪80年代以来,世界城市体系研究受到越来越多的关注,研究内容由早期的案例研究、基于属性的世界城市排名,发展为对世界城市体系结构的定量化分析。这些变化是与城市间关系数据的日益丰富分不开的,数据的丰富也带动了世界城市体系研究方法的日益丰富与完善。本文首先回顾了世界城市体系研究的定量化发展过程,在此基础上对世界城市体系定量分析方法的演化：由社会网络分析到链锁网络模型的发展以及两种方法的讨论和完善进行了梳理,并对两种方法的异同进行了对比。最后结合中国国内相关领域的研究现状,对未来研究进行了展望。     

Deterritorialising the nation? Internet and the politics of the Greek‐American diaspora

In this article, analysis focuses on the websites of Greek‐American diaspora organisations. The aim is to study these media outlets on two levels: (1) with regard to their communication function(s), in order to understand the spectrum of usages they offer to their visitors; and (2) with regard to the way they signify identity specificity at the crossroads of a parallel ethnic or national adherence. The low interactivity constitutes one of the general features of the media analysed. The persistence of the nation as the framework to apprehend collective belonging and the interaction with the ‘other’ is another recurrent and important element. The ‘identity specificity’ of the Greek diaspora community is not presented in articulation to the host society, but in terms of a continuous attachment to a ‘mother‐nation’, as a historic and cultural entity. The nationhood claimed and promoted in this manner is ethnic and cultural, and it espouses the form of an ecumenical and transcendent Hellenism.     

SITUATIONAL PLACES: RETHINKING GEOGRAPHIES OF INTERCULTURAL INTERACTION IN SUPER‐DIVERSE URBAN SPACE

Cities in general and public urban spaces in particular have re‐emerged as important places where strangers from different social and cultural backgrounds interact. The growing number of intercultural encounters assumed by contemporary urban studies calls for a theoretical examination of how these encounters are conducted. In this article we therefore critically examine the interplay between cultures, strangers, performances, encounters, and urban built environments. This means bringing together the theoretical ideas of super‐diversity, culture in world society, and situational places. The article argues that intercultural interactions between strangers in cities – and elsewhere – shape the cultural conditions of contemporary world society. First, super‐diversity is discussed as a cultural reality of world society. Drawing on empirical evidence from psychology, intercultural interactions between strangers are then demonstrated to be part of ritualized cultural negotiations. Finally, the notion of situational places is put forward as the conceptual nexus between these cultural encounters and the urban environment. This perspective allows the integration of bodily performances between strangers, spatial and situational context, and the resulting places of encounter.     

HOW DO DIFFERENCES IN PROPERTY TAXES WITHIN CITIES AFFECT URBAN SPRAWL?*

ABSTRACT We develop a duocentric‐city model and show that the ratio between the property tax in the suburbs and in the center has an ambiguous impact on the size of the city. We test this model by using a dataset of effective property tax rates which we developed using GIS techniques for central cities and suburbs in 445 urbanized areas. Results from the empirical analyses suggest that a lower property tax rate in the suburbs as compared to the central city is associated with more expansive urban growth and a greater level of decentralization of population and employment.     

全球化视角下的世界城市网络理论

城市诞生时就相互保持着联系,只有将城市纳入世界城市网络中才能正确把握城市产生和发展的本质。1980年以来在第三次全球化浪潮的背景下,世界生产要素和产品市场开始整合,世界城市的兴起是国际劳动分工在空间上的表达。Cohen、Friedmann、Sassen、Castells和Taylor等学者提出并发展了世界城市理论,世界城市网络理论已经成为研究城市问题的重要框架。联系数据的缺乏长期制约了世界城市网络的实证研究,二十世纪九十年代中期以来学者们创新性地解决了方法论的问题,对世界城市网络的各个层面进行了实证研究。