Interplay between telecommunications and face-to-face interactions - a study using mobile phone data

In this study we analyze one year of anonymized telecommunications data for over one million customers from a large European cellphone operator, and we investigate the relationship between people's calls and their physical location. We discover that more than 90% of users who have called each other have also shared the same space (cell tower), even if they live far apart. Moreover, we find that close to 70% of users who call each other frequently (at least once per month on average) have shared the same space at the same time - an instance that we call co-location. Co-locations appear indicative of coordination calls, which occur just before face-to-face meetings. Their number is highly predictable based on the amount of calls between two users and the distance between their home locations - suggesting a new way to quantify the interplay between telecommunications and face-to-face interactions

Cyberspace As/And Space

The appropriate role of place- and space-based metaphors for the Internet and its constituent nodes and networks is hotly contested. This essay seeks to provoke critical reflection on the implications of place- and space-based theories of cyberspace for the ongoing production of networked space more generally. It argues, first, that adherents of the cyberspace metaphor have been insufficiently sensitive to the ways in which theories of cyberspace as space themselves function as acts of social construction. Specifically, the leading theories all have deployed the metaphoric construct of cyberspace to situate cyberspace, explicitly or implicitly, as separate space. This denies all of the ways in which cyberspace operates as both extension and evolution of everyday spatial practice. Next, it argues that critics of the cyberspace metaphor have confused two senses of space and two senses of metaphor. The cyberspace metaphor does not refer to abstract, Cartesian space, but instead expresses an experienced spatiality mediated by embodied human cognition. Cyberspace in this sense is relative, mutable, and constituted via the interactions among practice, conceptualization, and representation. The insights drawn from this exercise suggest a very different way of understanding both the spatiality of cyberspace and its architectural and regulatory challenges. In particular, they suggest closer attention to three ongoing shifts: the emergence of a new sense of social space, which the author calls networked space; the interpenetration of embodied, formerly bounded space by networked space; and the ways in which these developments alter, instantiate, and disrupt geographies of power

Managing technological transitions: prospects, places, publics and policy

Transition management (TM) approaches have generated considerable interest in academic and policy circles in recent years (Kemp and Loorbach, 2005; Rotmans and Kemp, 2003). In terms of a loose definition, a ‘transition can be defined as a gradual, continuous process of structural change within a society or culture’ (Rotmans et al, 2001, p.2). The development of TM, much of which has occurred within the context of the Netherlands, may be seen as a response to the complexities, uncertainties and problems which confront many western societies, in organising ‘sustainably’ various aspects of energy, agricultural, water, transport and health systems of production and consumption. Problems such as pollution, congestion, the vulnerability of energy or water supplies and so on are seen as systemic and entwined or embedded in a series of social, economic, political, cultural and technological relationships. The systemic nature of many of these problems highlights the involvement - in the functioning of a particular system and any subsequent transition - of multiple actors or ‘stakeholders’ across different local, national and international scales of activity. With this in mind, such problems become difficult to ‘solve’ and ‘solutions’ are seen to require systemic innovation rather than individual or episodic responses. The point being that ‘these problems are system inherent and… the solution lies in creating different systems or transforming existing ones’ (Kemp and Loorbach, 2005, p.125). In this paper we critically engage with and build upon transitions approaches to address their ‘applicability’ in the context of the UK. In doing this the paper addresses the prospective potential of transitions approaches, but also their relative neglect of places and publics. Through developing an argument which addresses the strengths and ‘gaps’ of transitions approaches we also analyse the resonances and dissonances between three themes – cities and regions, public participation and national hydrogen strategy – in the transitions literature and the UK policy context

Commons - Whose Commons? Considering conceptual approaches to rural space of production

The article takes its point of departure in current suggestions stating that the idea of ‘commons’ could be a universal and normative guideline for how to organise a part of the interplay between nature and human activity. It is stated, that the concept in contemporary discourses has a widespread spectrum of connotations and is engaged for descriptive, prescriptive, and normative purposes. The content, character and meaning thus depend on context and dimensions in focus; the point is illustrated by means of the historical Danish commons. In a consecutive investigation of implicated concepts from social sciences (‘property rights’ being the starting point) it is similarly stated that implications cannot be determined ex ante. By means of elements from institutional economics and the sociology of space, suggestions for a conceptual framework are presented as basis for more detailed studies at a lower level of abstraction. Returned to Danish farming – but now in its contemporary settings – it is concluded that the framework of commons not adequately can be copied-and-pasted into present context due to the complex interconnectivity where local agriculture have boundless prerequisites and effects

Rapporteur’s comments on four sessions about ‘Food Matters’

Final Published versio

Migration systems, pioneers and the role of agency

The notion of a migration system is often invoked but it is rarely clearly defined or conceptualized. De Haas has recently provided a powerful critique of the current literature highlighting some important flaws that recur through it. In particular, migration systems tend to be identified as fully formed entities, and there is no theorization as to how they come into being. Moreover, there is no explanation of how they change in time, in particular how they come to decline. The inner workings – the mechanics – which drive such changes are not examined. Such critiques of migration systems relate to wider critiques of the concept of systems in the broader social science literature, where they are often presented as black boxes in which human agency is largely excluded. The challenge is how to theorize the mechanics by which the actions of people at one time contribute to the emergence of systemic linkages at a later time. This paper focuses on the genesis of migration systems and the notion of pioneer migration. It draws attention both to the role of particular individuals, the pioneers, and also the more general activity of pioneering which is undertaken by many migrants. By disentangling different aspects of agency, it is possible to develop hypotheses about how the emergence of migrations systems is related to the nature of the agency exercised by different pioneers or pioneering activities in different contexts.migration systems, agency, emergence, pioneer migrants, migrant networks, social capital

Epidemic spreading and risk perception in multiplex networks: a self-organized percolation method

In this paper we study the interplay between epidemic spreading and risk perception on multiplex networks. The basic idea is that the effective infection probability is affected by the perception of the risk of being infected, which we assume to be related to the fraction of infected neighbours, as introduced by Bagnoli et al., PRE 76:061904 (2007). We re-derive previous results using a self-organized method, that automatically gives the percolation threshold in just one simulation. We then extend the model to multiplex networks considering that people get infected by contacts in real life but often gather information from an information networks, that may be quite different from the real ones. The similarity between the real and information networks determine the possibility of stopping the infection for a sufficiently high precaution level: if the networks are too different there is no mean of avoiding the epidemics.Comment: 9 pages, 8 figure