Petite géographie de la co-présence.

Une première approche comparée des pratiques spatiales de consommation des touristes et habitants à partir des réseaux sociaux numériques sur l’île de Xiamen (Chine).

Conventional statistical data rarely provide information on the different "present populations" that coexist in cities and in regions so as to be able to separate, for example, tourists from permanent residents. It is difficult to analyse the spatio-temporal behaviour of these different populations, to identify potential conflicts and to imagine possible futures. The research proposes to overcome these limits by using the data provided by the Chinese social network SINA Micro-blog. A new geography of co-presence emerges and allows [...]

Lisbonne, 21e siècle.

Vers un nouvel espace référentiel du centre urbain : emprise marchande, aménagement certifié, libéralisme multiculturel.

This text questions the dynamics of urban government, which claims to guarantee a set of individual and public goods through the standard and expert certification procedures. It pays attention to the economic properties of standards and the normative re-description of reality they operate. It focuses in particular on the city of Lisbon which, like other metropolitan areas in southern Europe, is planning redevelopment operations under the pressure of the economic and financial crisis. It discusses the advent of a [...]

Tracer l’émergence des foules et des publics en ligne et sur site.

Events are exceptional moments in urban rhythms and attract a lot of attention. However, they are not easily traceable, and social sciences clearly favored long duration phenomena (structural effects) or cycles (as in opinion trends). Thanks to the traces that we leave on digital networks, rapidly emerging collective behaviors can now be accounted for. They may even be related to on site events. Qualities of the constructed environments (containers) and attention attractors (contenants) can be combined to generate eurythmic [...]

Métrologies critiques de l'espace.

Critical Approaches to Metrology.

When the construction of a political space demands shared systems of measurement, ensuring that everything is made comparable, coding categories and procedures are brought into place. Attributing singular cases to measurable categories was for a long time a prerogative of the State, but new systems of metrology are now broadening the range of players. With this traversal, we aim to start deconstructing these metrological systems, both old and new, to prompt different readings of the rhetoric behind them. By [...]

La fabrique des projets de grands territoires : un essai de rythmanalyse.

This article proposes to enter the black box of the large territories making process, by means of a rhythm analysis. We examine the rhythmic trajectory of three projects, a French one (Pôle d'Orly) and two Swiss ones (the Geneva and Lausanne agglomeration projects), using the notion of improvisation. Rhythm analysis allows us to show how improvisation, beyond metaphor, qualifies this trajectory. We will first focus on the temporal trajectory of our projects, i.e. their emergence and deployment over time [...]

Déconstruire la spatialisation de services écosystémiques par la modélisation critique.

This article analyzes the impact of the choice and accuracy of input data on the metrology of the objects of Nature, based on the example of the ecosystem services mapping in the Amazonian pioneer fronts. To do so, field and remote sensing data are linked using regressions. These regressions emphasize : 1) the unequal capacity to map ecosystem services ; 2) the need to adapt the methodology to each indicator ; 3) the need to take into account various [...]

Rythmes urbains.

Promesses d'un concept en mouvement.

La ville ? « Ne pas essayer trop vite de trouver une définition de la ville ; c’est beaucoup trop gros, on a toutes les chances de se tromper ». Le rythme ? Comment réussir « à définir un seul et même signifiant qui véhicule tant de signifiés différents ? ». Et pourquoi chercher à le faire ? Paul Valéry lui-même a avoué (dans ses Cahiers) son échec à éclairer la double énigme du langage et de l’être. La [...]

Quantification, marché et fluidification urbaine : le cas du passe Navigo.

This article deals with the imaginary sources of the quantification of the world, through the typical case of electronic ticketing in urban public transport. The historical study of the process of technical innovation makes it possible to specify the concrete problems which arose for the actors and the ideological framework in which they sought to solve them. The "Navigo" case is at the crossroads of two complementary "dreams" regarding management : on the one hand, the idea of an autonomous [...]

Glacis mémoriels en Médoc.

À propos de la cartographie multi-strates des milieux et usages d’une rive estuarienne.

On the basis of two animated maps, the paper aims to contribute to the thinking of the mapmaking practices that are based on the overlay of various stratas. The examples suggest that the added value of such multilayered cartographies (that we choose to call glacis) is to be found in two complementary directions : that of helping to grasp the complexity of processes and stakes by building a lavish – if not blurred – general picture ; that of [...]

Maillage paroissial et pratiques religieuses dans le diocèse de Rennes, Dol et Saint-Malo.

The subject belongs to the scientific field of social geography. The article proposes to examine, in light of their new components, the territories of religion and the faithful Catholics in the dioceses of Rennes, Dol and St. Malo. Our study, nourished by qualitative field studies, casts a light on these new forms of organisation based on spatial domains. Rural parishes, peri-urban or urban ones were used as a framework to the study, to assess the characteristics of the faithful [...]