Search results for "ESPACE"

A Beggar, Self-Awareness And Willingness To Help

2008

The present field experiment examines the relationship between self-awareness, violation of personal space and helping  behavior. A beggar asking for alms on the streets. To induce the first experimental condition, the state of objective self-awareness, the beggar had a mirror at chest height, suspended from a string round his neck. In the control condition, in place of the mirror, the beggar held a similarly dimensioned piece of cardboard in the same position. Both mirror and cardboard bore the message "A FEW PENNIES THANKS." As concerned the second experimental condition, the beggar either stood still waiting for people to come up to him, or walked toward the people as they approached, th…

La préservation de l'environnement nocturne : les enjeux d'une controverse sociotechnique

2013

This communication explains the birth of an environmental problem, light pollution, understood as a socio-technical controversy. Over forty years, in support of the actor-network approach, it traces the conditions of its emergence, transformation and dissemination to local, national and transnational levels, and through various professional disciplines. Schematically, "environmentalists" uphold a holistic approach of "nocturnité" and define artificial light as a pollutant. Facing them, the "technicist" defend a segmented approach and define artificial light as a nuisance. The implementation of this controversy on the political agenda leads to institutional decisions that grasp it with diffi…

(Ré)concilier éclairage urbain et environnement nocturne : les enjeux d’une controverse sociotechnique

2014

International audience; Our paper explains the birth of an environmental problem, i.e. light pollution, viewed as a socio-technical controversy. Supported by the actor-network approach, it traces over forty years the conditions of its emergence, transformation and dissemination to local, national and transnational levels and through various professional disciplines. Schematically, “environmentalists” uphold a holistic approach of “nocturnality” and define artificial light as a pollutant. Facing them, the “technicist” defends a segmented approach and defines artificial light as a nuisance. The introduction of this controversy into the political agenda leads to institutional decisions that gr…

Je n’ai rien dit, j’ai montré. Les copiaus et l’espace scénique du vin autour de 1925

2014

International audience

Points massiques, espace des sphères et « hyperbole »

2015

The use of massic points permits to define a branch of a hyperbola in the Euclidean plane using a Rational Quadratic Bézier Curve. In the space of spheres, a circular cone, a circular cylinder, a torus, a pencil of spheres or a Dupin cyclide is represented by a conic. If the kind of the pencil is Poncelet or if the canal surface is a circular cone, a spindle torus, a spindle or a horned Dupin cyclide, the curve is a circle which is seen as a hyperbole. The limit points of the pencil or the singular points of the Dupin cyclide can be determined using the asymptotes of this circle. In this article, we show that the use of massic points simplifies the modelization of these pencils or these Dup…

La diffusion des sites internet en .fr dans l'espace périurbain et rural français

2000

ACL; International audience; II existe à l'heure actuelle très peu d'études sur la localisation et la diffusion des sites Internet compte tenu de la rareté des sources qui n'intègrent pas pour la plupart la dimension géographique (échelle nationale). A partir des fichiers de l'AFNIC, il est possible de spatialiser l'implantation des sites Internet uniquement à l'échelle des codes postaux. Pour évaluer la situation de la diffusion des sites Internet en milieu rural, le zonage en aire urbaine (ZAU) fournit une grille spatiale d'analyse pertinente.En août 1999, seulement 10 % des 40 000 sites recensés sont localisés en zone rurale et autant en milieu périurbain. Le réseau des petites villes (d…

La politisation de l'ordinaire : Enjeux et limites de la mobilisation numérique

2015

This article examines the politicization processes of ordinary digital practices as well as its role in the constitution of new protester groups. Its interest is also represented by the construction of an original theoretical framework aiming to underline the complementarity between different theoretical perspectives. By encouraging a connection between the sociology of social movements, the critical Theory and the studies of “information practices”, the author elaborates a new approach to mobilisation focused on the emergence of a more and more citizen's engaged position with regard to the “information world” and not only based on militant uses of the media. While claiming a critical appro…

L'espace baroque et l'anamorphose de l'objet

2008

Espace urbain, espace de vie. Pratiques artistiques autour de la cartographie de la ville

2014

National audience

Surface canal, squelette et espace des sphères

2016

A canal surface is the envelope of a one-parameter familly of oriented spheres. With the knowledge of center an radius functions associated to it, it is easy to compute a parametrisation of the surface. In this article, we study the inverse operation, which is the search for the spheres in the canal surface. By selecting a point on the boundary and using the sphere space, we estimate the maximal sphere tangent with this point and a second point on the boundary. Furthermore, we estimate a second sphere, which allows to build the characteiristic circle of the canal surface. So this article consists in a new approach of the skeletonization of an object. Indeed, a skeleton is a shape representa…