Gibrat Revisited: An Urban Growth Model Incorporating Spatial Interaction and Innovation Cycles. 再评吉尔布瑞特：顾及空间相互作用和创新周期的城市增长模型

We designed a geographical model for simulating the distribution of urban growth in systems of cities. The model incorporates the hierarchical and spatial diffusion of innovation cycles through gravitational interactions within a set of cities. Using theoretical simulations, we demonstrate that this model is able to reproduce the observed properties of urban systems for the log‐normal distribution of city sizes as well as the observed distribution of growth rates. Our experimentation was performed on a large harmonized historical database that includes a few hundred French urban agglomerations between 1831 and 1999 (Pumain‐INED database). Both spatial interaction and innovation cycles are necessary ingredients to explain the evolution of urban hierarchies. We suggest that Gibrat's generic stochastic growth model based on independent entities should be replaced by a more relevant model of spatially and temporally interdependent geographical entities.     

Where cities fail to triumph: The impact of urban location and local collaboration on innovation in Norway

The role of cities in fostering innovation has for long been taken for granted. Agglomeration and the knowledge spillovers generated in dense urban environments have been considered fundamental drivers of innovation. This view has, however, become challenged by research questioning the returns to physical agglomeration and local networking, placing instead more emphasis on the importance of interregional and international collaboration, and on innovation in peripheral regions. This paper delves into the debate on the role of cities for innovation by examining the interplay between urban location and local collaboration in Norway. It uses data from the Community Innovation Survey for 2006–2010 to map out the geographical dimension of R&D collaboration in Norwegian firms with a view to assessing whether different types of R&D collaboration in urban and rural locations affect firms’ propensity to innovate. The results show that local collaboration is associated with increased process and organisational innovation, while it does not produce higher levels of product or marketing innovation. Conversely, international collaboration is connected with higher probabilities of product, new-to-market and marketing innovations. Furthermore, location in urban or rural areas makes no difference for most innovation outcomes in Norway when other characteristics are controlled for. Location in cities also does not shape the returns to local R&D collaboration. Hence, the role of cities for innovation in Norway, whether in themselves or as sites for dense local interaction, is less relevant than the urban innovation literature would predict.     

长江三角洲城市一日游的旅游经济空间联系测度与分析

本文通过计算长江三角洲中心城市的中心职能强度,对长三角中心城市进行等级划分,在此基础上,借助修正后的旅游经济联系强度、旅游经济隶属度及旅游吸引范围模型,测度城市间旅游经济的联系强度、隶属度及城市旅游控制范围,同时建立城市旅游经济联系的空间模型并分析长三角中心城市旅游经济联系的方向以及旅游系统空间结构等级层次性特征。结果表明:长三角中心城市旅游经济联系度不断增强,并逐渐向区域旅游经济一体化方向进展,同时区域内部城市旅游经济差异显著,且表现为随着旅游城市等级规模的变化呈现出正相关的旅游经济随之匹配,并在旅游经济的空间联系上按照一定的轴线发生关系,这种轴线在地理空间上表现为"沿线"并且这种联系的规律性在空间上总的方向表现为随城市距离增加而逐级递减规律。基于以上分析,最后针对城市间的旅游经济空间联系对长三角旅游系统空间结构影响加以论述,以此为提升长三角城市一日游的旅游经济活动效率,加快实现长三角旅游经济一体化进程,提供一定理论与现实的依据参考。     

我国三大都市圈城市创新能级体系比较

大都市圈已成为国际经济发展的关键节点,是国际创新的主要支点。我国三大都市圈在我国创新体系中起着至关重要的作用。本文对我国三大都市经济圈内城市创新能力进行测度分析的基础上,对三大都市圈的创新能级体系进行了比较,并应用重力模型,对中心城市创新引力进行测度与比较,分析了三大都市圈内部城市的创新联系。     

Income Disparity, Time Allocation, and Social Welfare in a System of Cities

The objective of this paper is to examine the formation of specialized cities with multiple types of households in a decentralized system of cities. This is done in a two-sector spatial general-equilibrium model of a closed economy consisting of two groups of labor forces: a continuum of unskilled labor used to produce a food product, and a continuum of skilled labor used in the production of a high-tech product. Cities are formed in this model as a result of investment in public infrastructure. This investment leads to a reduction in commuting cost and consequently to an increase in the time that households can utilize for work and leisure. The paper characterizes the equilibrium solution for a purely specialized system of cities and presents some comparative static results. Moreover, the paper presents an explanation for the variation in city sizes as a result of differences in households' value of time. Finally, the paper analyzes the determinants of income disparity between the two different types of cities and its impacts on social welfare.     

新经济环境下的城市创新模式探讨——以沪宁城市带为例

信息时代,非线性化的创新活动和跨国公司主导下的全球化,构成了区域培育创新活动的大背景。在这一背景下,由弹性的专门化生产、战略联盟、地方支撑体系和跨国公司主导的创新等级网络所形成的生产、市场、支持空间构成了创新网络环境,并通过城市等级体系、大型企业分工体系和类似于信息网络的体系,这三种途径形成创新扩散机制。本文结合沪宁城市带内代表性城市创新环境分析,提出了自主、合作、配套、联合和园区五种城市创新模式。     

高铁对中国城市可达性和区域经济空间格局的影响

从沿线城市加权平均旅行时间和中心城市“小时经济圈”两个维度分析高铁开通对中国城市可达性的影响,利用引力模型、区位优势潜力模型、Moran指数等研究高铁开通对区域经济发展空间格局的影响。研究表明：高铁开通显著改善了沿线城市日常可达性;高铁开通后33个沿线城市对中国261个地级市的“加权平均旅行时间”均值降低;东中西三大区域的城市交通发展不平衡性有小幅度改善;北京、武汉“小时经济圈”呈“面状蔓延”模式,上海、广州、西安的“小时经济圈”呈“轴线扩展”模式。高铁开通显著影响中国区域经济发展格局：沿线城市可达性水平提高,城市间经济联系更加密切,二线城市间经济联系强度增长率最高;长三角城市群区位优势最突出,长江中游城市群潜力巨大;高铁带来的扩散效应增强。最后,本文就依托高铁建设推动中国区域经济健康发展展开了进一步的讨论。     

创造阶层与城市可持续发展

随着知识经济的发展和经济全球化,人才资源(人力资本)成为第一资源,以人为本,重视人力资本特别是创造型人才并发挥其创新作用,是城市可持续发展及竞争力的根源和保证。创造阶层理论为城市可持续发展发现了新道路。创造阶层的兴起将深刻地影响城市的可持续发展,中国城市应当采取措施兴起创造阶层。城市可以通过规划建设提高人居环境质量、增加城市便利性,通过制度创新扩展人的自由、提供创新的制度环境,而积累人力资本特别是兴起创造阶层,从根本上增强城市可持续发展能力。     

Government institutions and the dynamics of urban growth in China

Economic growth in China in recent decades has largely rested on the dynamism of its cities. High economic growth has coincided with measures aimed at improving the efficiency of local governments and with a mounting political drive to curb corruption. Yet the connection between government institutions and urban growth in China remains poorly understood. This paper is the first to look into the link between government efficiency and corruption, on the one hand, and urban growth in China, on the other hand and to assess what is the role of institutions relative to more traditional factors for economic growth in Chinese cities. Using panel data for 283 cities over the period between 2003 and 2014, the results show that the urban growth in China is a consequence of a combination of favorable human capital, innovation, density, local conditions, foreign direct investment, and city‐level government institutions. Both government quality—especially for those cities with the best governments—and the fight against corruption at the city level have a direct effect on urban growth. Measures to tackle corruption at the provincial level matter in a more indirect way, by raising or lowering the returns of other growth‐inducing factors.     

Regional technology policy and factors shaping local innovation networks in small German cities1

Local innovation networks are considered to be important to innovation and technological change and to growth prospects of regions and cities in Germany. When analysing the local (or regional) innovation system, one should consequently not only investigate horizontal and vertical relations among firms but also the contacts with universities and other research institutions. Furthermore, the role of government agencies and interest groups that provide financial support as well as commercial and technical information should also be taken into account. However, the review of relevant theoretical and empirical investigations related to the German experience shows that such innovation and R&D cooperation networks appear to be less significant than expected. In general various regional technology policy measures adopted in German states (the provision of research infrastructure, establishment of technology centres, innovative small and medium sized enterprises support programmes, etc.) have been more successful in economically better-off large cities than in the rural areas. Apart from offering a critical review of relevant theoretical and empirical research, this study introduces the present regional technology and R&D promotion policies in German states and examines the local innovation systems, taking Landshut as an example.     

Space, place and innovation: a distance-based approach

Innovation is increasingly considered a prerequisite for regional development and it is commonly understood that certain regions are more conducive to innovation than others. Regions that do not possess the required institutional and cultural contexts are often encouraged to work on creating them. However, there is increasing evidence that innovation is also a spatial phenomenon: the propensity of establishments to innovate also varies with their location relative to major and minor metropolitan areas, independent of local context. This article investigates whether the geography of innovation is similar for three different types of manufacturing sectors ( high-tech (HT), medium-tech, first and second transformation) and across two different types of innovation (product, process). It is shown that, in Québec, to the extent that geography and innovation are connected, it is principally distance from a metropolitan area that plays a role. Our results lend support to   McCann's (2007)   recent spatial model of innovation and are also compatible with   Duranton and Puga's (2003)   theory of nursery cities. Our results also show that HT innovators behave differently from other manufacturers, with a tendency to internalize their innovation behaviour (perhaps out of necessity or for reasons of secrecy) in more distant locations.     

城市紧凑度对中国城市创新的影响

城市空间特征与创新的关系是创新地理的重要研究议题.论文构建了城市紧凑度与城市创新的理论分析框架,提出研究假设,并选取中国地级及以上城市作为研究空间单元,从密度、土地混合利用、街道连通性和交通通达性四个方面构建了城市紧凑度指数,对2010年中国城市紧凑度进行了评价,分析了中国城市紧凑度的空间分布特征,在此基础上,采用空间...     

RECENT CHANGES IN THE SIZES OF SIBERIAN CITIES

The author, comparing growth histories of East and West Siberian cities of over 50,000 population through regression and cluster analysis techniques, develops a number of city typologies based on magnitude of population growth, economic specialization, and social infrastructure. It is argued that such typologies are useful in planning because they identify types of cities experiencing similar growth conditions and instances where cities have changed from one type of situation to another. Although the study is limited to 1926-1986, it addresses economic and social components of Siberian urban growth relevant to the interpretation of preliminary results of the 1989 census (translated by H. L. Haslett, Leamington Spa, UK).     

东北地区资源型城市资源诅咒效应及传导机制研究

通过面板数据固定效应模型,利用东北地区23个资源型地级城市1999-2012年的数据,分析了东北地区资源型城市资源诅咒效应的存在性与主要传导机制。结论显示东北地区资源型城市存在资源诅咒效应;物质资本投资对经济发展起到最为明显的促进作用,制造业投入和教育业投入也具有一定的促进作用,但作用不够显著。城市开放程度与经济发展之间呈现负相关关系,而城市类型与经济发展不存在明显相关关系。传导机制方面,资源诅咒效应主要通过抑制制造业发展、物质资本投入和教育业投入来阻碍经济增长,其中对制造业的负面影响是主要传导因素。煤炭和石油型城市体现出较为明显的人力资本挤出,而其他类城市传导机制作用则比较平均。     

Measuring the Creativity of a City: A Proposal and an Application

Cities are considered to be the major drivers of the global economy for many reasons, including their creative and innovative potential in generating sustainable economic growth. Istanbul is one of the global cities searching for a long-term growth strategy. This paper starts with a modest effort of composing an index to be used in the evaluation of the creative potential of cities. Our proposed index, “global creative index”, consists of five main criteria: (1) creativeness, (2) innovativeness, (3) intellectual development, (4) global network connectivity and (5) world cityness emphasizing multinational corporate economy, international division of labour and high intensity of producer and financial services. The use of the index is illustrated through the comparison of nine cities: Hong Kong, Istanbul, London, Los Angeles, Moscow, New York, Shanghai, Singapore and Toronto. The analysis of these nine cities shows that Istanbul is building an innovation environment, but it still lacks research and development infrastructure, technical support and investment in higher education. This comparison offers guidelines for policy-makers to sketch the growth of Istanbul along the lines of creativity and innovativeness.     

基于亲景度与竞争态的上海入境旅游市场分析

运用亲景度、竞争态等市场指标体系和SPSS统计软件,对1997-2004年上海入境旅游市场进行了分析,发现1997-2004年上海主要的入境旅游市场亲景度相对比较稳定,但竞争态却呈现出上下波动的态势。本文认为亲景度和竞争态虽然有其内在的联系,但就上海入境旅游市场而言,亲景度和竞争态的关联性并不是特别显著,而为了比较合理地测量入境旅游市场,在选取亲景度为偏好系数衡量旅游市场时,需要结合竞争态做综合分析。最后,本文结合Co-Plot分析法,对上海的入境旅游市场选择提出了建议。     

Benefitting from Learning Networks in “Open Innovation”: Spin-off Firms in Contrasting City Regions

R&D and innovation increasingly take place in networks that extend beyond the boundaries of a single firm, with customers in an important role in the learning processes involved. This phenomenon is captured by the term “open innovation”. Advantages of open innovation encompass cost reduction and an increased competitiveness. Spatial innovation theory however indicates that the potential of open innovation is not the same for all urban regions, there may be differences between large metropolitan areas and small cities. In this context, the authors compare university spin-off firms in two contrasting urban regions in Europe, Delft in the Netherlands and Trondheim in Norway (a metropolitan area versus an isolated city) with regard to the profile of their learning networks and the contribution of these networks to growth. Learning networks appear to differ in structure and strength, in spatial configuration and also in the influence on job growth. Thus, networks in Delft (in a large metropolitan area) tend to be stronger compared to those in Trondheim (isolated city), whereas the influence of network strength on growth tends to be negative in Delft but positive in Trondheim. Overall, firms in Trondheim tend to rely more on own resources and capabilities and less on learning networks in open innovation.     

City and innovation: Different size,different strategy

The objective of this paper is to assess whether establishments' innovation performance and innovation strategies differ by the size of the city in which they are located. Using the Canadian 1999 Survey of Innovation database (establishment-based), it was found that the rate of innovation is not correlated with city-size, but when the innovation measure takes into account the importance of innovation, then the size of the city does matter. The results show that establishments belonging to smaller cities (with populations of less than 50,000) are less likely to be associated with a world-first innovation than those located in larger cities. Four innovation strategies have been retained—Private Source, R&D, Collaboration and Public Science Base paths—and the results show that the R&D path leads to the greatest increase in the estimated probability to be associated with a world-first innovation, for almost all sectors and all city sizes.     

Urban development in peripheral regions of the New Europe: The case of Vigo in Galicia

The paper discusses the development of peripheral cities and regions in a world where economic integration is growing. The paper argues that the development of peripheral cities and regions depends on their development potential and accessibility to markets. Their sustainable development, however, lies in the functioning of the forces of development: the organization of the productive system, the diffusion of innovation, the territory's urban development and the change and adaptation of the institutional system. These are forces that govern the economic growth process, generate externalities, and reduce production costs through reciprocal interaction. The paper's discussion is based on the analysis of the dynamics of the city of Vigo in Galicia, a peripheral region of the European Union.     

CREATIVE INDUSTRIES IN THE NETHERLANDS: STRUCTURE, DEVELOPMENT, INNOVATIVENESS AND EFFECTS ON URBAN GROWTH

Creativity is central in stimulating economic growth in cities, regions and advanced capitalist economies in general. There is, of course, no one-to-one relation of the number of firms in creative industries to economic growth. Innovation is a key mechanism explaining the relationship of creative industries with economic performance. Based on an empirical study in the Netherlands we explore the effect of creative industries on innovation, and ultimately on employment growth in cities. In the Netherlands the three specific domains of creative industries - arts, media and publishing, and creative business services - make up 9 per cent of the business population. Drawing on survey data we find that firms in creative industries are indeed relatively innovative. Yet substantial differences are found across the three domains: firms in the arts domain are clearly less innovative, most likely due to a different (less market-oriented) dominant ideology. In addition, firms in creative industries located in urban areas are more innovative than their rural counterparts. We go on to analyse how the concentration of creative industries across cities is connected with employment growth. With the exception of the metropolitan city of Amsterdam, we find no measurable spill-over effect from creative industries. The presence of the creative class (in all kinds of industries other than creative ones) appears to be a much stronger driver of employment growth than creative industries.