Croiser les disciplines, se croiser dans l’indiscipline.

Dialogue autour de la notion de rythme.

As polysemous and intangible as the notion of "rhythm" might be, one must note its capacity to make diverse disciplines (such as geography, literature, biology, dance, sociology or economy) work and speak together. Wishing to pursue this dialogue, can the specific conditions to build a common reflection and the production of an "undisciplined knowledge" be identified ? In light of the seminar "Urban Rhythms" – that took place in Lausanne from 8 to 10 November 2017 –, our reflection [...]

Rythmes ambiants, rythmes de marche.

This text explores the links between walking rhythms and rhythms related to fluctuations in tonalities and intensity of ambiances. It hypothesizes a correlation between walking gaits, the variations in pedestrian attentionality and what I propose to call here "ambient rhythms". The rhythm would not be the cadence or the tempo, but rather a way of flowing atmospheres and bodies. The review of field work carried out in two districts of the city of Grenoble – Europole and Île-Verte – [...]

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 [...]

Recherches interdisciplinaires.

L’injonction contemporaine à l’interdisciplinarité se révèle paradoxale. Elle s’accompagne, dans la pratique, de nombreuses difficultés théoriques et pratiques, comme l’ont montré, par exemple, Nicole Mathieu et Anne-Françoise Schmid à partir de la question de la modélisation (Mathieu et Schmid 2014). Ce constat liminaire a conduit à l’organisation d’une journée d’études sur les « Pratiques du pluridisciplinaire », le 12 juin 2015, à l'Université Paris Ouest-Nanterre La Défense, avec le soutien du laboratoire Sophiapol. L’objectif était de mettre en lumière les enjeux [...]