人流联系和经济联系视角下区域城市关联比较——基于手机信令数据和企业关联数据的研究

手机信令数据所代表的人流联系与国内外研究常用的企业关联数据在测度城市关联存在何种差异,尚缺乏明确的研究。本文以江西省北部地区为研究对象,分别以手机信令数据、企业关联数据测度城市关联,比较了两种城市关联与城市之间空间距离、人口规模的关系,比较了两种城市关联网络的层级、结构、腹地。主要研究发现：人流联系不仅集中在城市周边地区,而且集中于较高等级城市之间;经济联系则主要集中在较高等级城市之间。人流联系、经济联系受到城市人口规模影响均较小。人流联系显著地符合幂函数空间衰减规律。手机信令数据和企业关联数据是两种不同的城市关联数据,但可互为补充,较为全面地反映城市关联。     

Smells like politics: planning and the inconvenient politics of intensive peri‐urban agriculture

Intensive farming is an increasing part of Australian agriculture, including in the multi‐functional landscapes at the edges of Australian cities. The example of intensive “broiler” poultry production reveals the tensions that arise when sites of hyper‐productivity conflict with social change in rural areas. Planning processes for intensive farming in the Australian state of Victoria are predicated on stability and consensus: on assumed static and uncontroversial ideas of agriculture, its place, and the primacy of agricultural productivity. Yet concerns about the industrialisation of agriculture are live political issues at the local level, especially in dynamic peri‐urban locations. This paper explores the emergence of a politics of place outside the bounds of planning consensus through an analysis of planning appeals and associated media relating to planning permits for intensive poultry developments in Victoria over 2011–2016. We highlight tensions that exist in relation to technical planning assessments and categorisations used to assert farming as the orthodox use of rural land, especially when new forms of farming look and feel demonstrably different. Using Mouffe's problematising of the negation of antagonism and Rancière's notion of the risks of a false consensus democracy, we argue that planning processes for intensive farming illustrate critical issues in participatory planning. While ostensibly post‐political decision‐making narrows the politics of place and food systems to decisions about policing the boundaries and buffer distances placed around intensive poultry developments, alternative representations of rural life persist. The certainty offered by code‐based planning does not negate the ongoing (if inconvenient) politics of intensive peri‐urban agriculture.     

Urban commons are more‐than‐property

Urban commons are characterised in the literature as collectively shared property in the city shaped by a context of scarce resources, population density, and the interaction of strangers. In the broader commons literature, commons appears as a verb, a noun, and a process made by practices of commoning—albeit still with a focus on property. In this paper, I argue that an understanding of urban commons as more‐than‐property is needed to recognise how present but elusive urban commons are. I use examples from interviews and observations conducted at a Women's Library to discuss how the access, use, benefit, care, responsibility, and ownership of this urban commons bring it into being through particular practices of commoning. By questioning current ways of defining urban commons, urban scholars gain a grounded understanding of the role of property, and other practices, in maintaining an urban commons over time.     

近70年来中国历史城市地理研究进展

历史城市地理是历史地理学的重要分支之一。近70年来,中国历史城市地理研究经历了奠基与探索、缓滞、复苏与拓展、深化与融合等发展阶段,在研究内容拓展、理论与方法总结、新技术探索等方面取得了长足进步和丰硕成果,促进了中国历史地理学的整体发展。基于近70年来历史城市地理领域的代表性研究论著,总结了中国历史城市地理研究的阶段性特征,论述了九大专题领域的研究进展,并对历史城市地理研究相关问题进行了辨析,对今后的研究趋向加以展望。     

‘IT'S ALL A QUESTION OF BUSINESS’: INVESTMENT IDENTITIES,NETWORKS AND DECISION‐MAKING IN THE CLEANTECH ECONOMY

Cleantech has emerged in the last decade as a major new investment sector at the forefront of the green economy. It responds to the need for innovative technologies to combat the impact of global environmental, climate and resource trends. Focusing on the cleantech sector, this article explores the central importance of relationality within the financial domain of the green economy. The central aim of this article is to deepen understandings of the operation of cleantech investment by examining the decision‐making processes of cleantech actors, how these are influenced by (and influence) cleantech investment networks, and the relationships between these factors and the macro‐level drivers and discourses focused on the cleantech sector. A relational economic geography approach is used in conjunction with other frameworks (spanning the cultural, structural and actor‐network dimensions of cleantech investment) to investigate: how cleantech investors define the sector; the macro‐ and micro‐level drivers of cleantech investment; and how cleantech networks form and operate to create and disseminate cleantech discourses and to generate the mutual trust and information sharing needed to secure cleantech investments. In so doing, the article seeks to shed greater light on the micro‐level processes contributing to the creation and growth of cleantech investment markets as an essential catalyst and component of the green economy.     

Home divided,home reconstructed: children in rural–urban migration in contemporary China

This article is centred on the geographies of Chinese children in contemporary China – an area which has been problematically overlooked in geographical literature on childhood. In employing unique mobile research methods by tracking migrant children through the migration cycle, the author conducted an extensive ethnographic study of rural migrant children aged 8–17 in China. The article explores rural children's everyday lived experience of migration and how migrant children negotiate and articulate home and belonging while on the move. The study demonstrates the dynamic environment that migrant children inhabit, the fluid, contextual and mobile nature of their life in rural migrant households, their migrancy and their active involvement in homemaking.     

Conceptions of place: approaching space,children and physical activity

In this paper, we argue that place mapping is useful for approaching children's conception of place and that this is of relevance when designing physical activity interventions. We contend that socio-material factors influence children's perception and use of places, and are crucial to understand in relation to their use of local neighbourhoods for physical activity. A place mapping of children's understandings and everyday use of their local neighbourhood in suburban Copenhagen was conducted with a fifth grade elementary school class. The mapping and subsequent analysis resulted in three categories of relevance to children's conceptions of place; located social experiences, experiences of the unknown, and children's contested spaces. We argue that such knowledge can provide useful information in the development and evaluation of activities that promote physical activity in urban spaces.     

城市化下的“卫生”困境与突破--论19世纪后半期美国城市公共卫生改革

19世纪后半期迅猛发展的美国城市化,使美国社会经济生活出现全方位的变化。同时,人口高度密集的城市环境导致公共卫生问题恶化,出现所谓的卫生危机,从而促发了城市公共卫生改革。此后,在美国城市的环境治理和疫病防治方面都出现系列性变化,城市公共卫生开始走上正轨。在此过程中,政府开始直接干预公共卫生,大众卫生意识得以强化,为美国城市卫生事业留下了宝贵遗产。     

Knowledge Production,Urban Locations and the Importance of Local Networks

This paper analyses the relationship between knowledge production and urban locations in industrial design, a knowledge-intensive business service (KIBS). KIBS concentrate in urban locations. This is often explained by the co-location of client firms and market access in large cities. Recent research on knowledge production, however, reveals that knowledge productive networks are significant for both the competitiveness and location of KIBS. Thus, to understand the urban location of industrial design, it is important to analyse how knowledge production is organized within the industry. Industrial design is concentrated in urban locations, but most of its clients are located elsewhere. Hence, it seems that industrial design firms concentrate in urban locations mainly because their knowledge networks include specific types of formal and informal local social networks.