Search results for "temps"
showing 10 items of 198 documents
199 Causal Classes of Space-Time Frames
1992
It is shown that from the causal point of view Minkowskian space-time admits 199, and only 199, different classes of frames.
Two-point functions with an invariant Planck scale and thermal effects
2008
Nonlinear deformations of relativistic symmetries at the Planck scale are usually addressed in terms of modified dispersion relations. We explore here an alternative route by directly deforming the two-point functions of an underlying field theory. The proposed deformations depend on a length parameter (Planck length) and preserve the basic symmetries of the corresponding theory. We also study the physical consequences implied by these modifications at the Planck scale by analyzing the response function of an accelerated detector in Minkowski space, an inertial one in de Sitter space, and also in a black hole spacetime.
Dialogue sur le handicap : réciprocité et altérité
2017
This dialogue is not one between a lecturer in philosophy (Pierre Ancet) questioning a person in a situation of physical dependency (Marcel Nuss), but a dialogue between two full-fledged authors. In this exchange the organic deficiency constitutes only the specific character of an individual’s experience, which is to be described without making it a pathology. Disability is considered in its organic, psychological and social dimension, as an incapacitating constraint, but also as a potential vector to discover nonstandard capacities. Among these capacities, the authors stress the consciousness of time and of the body, particularly unexpected as this consciousness is examined by an entirely …
The design and implementation of Neuma, a collaborative Digital Scores Library - Requirements, architecture, and models
2012
This paper presents the design and implementation of the Neuma platform, a digital library devoted to the preservation and dissemination of symbolic music content (scores). Neuma is open to musicologists, musicians, and music publishers. It consists of a repository dedicated to the storage of large collections of digital scores, where users/applications can upload their documents. It also proposes services to publish, annotate, query, transform, and analyze scores. The long-term goal of the project is to enable an open and collaborative space where musician communities will be able to share music in symbolic notation. The project is organized around the French IRPMF institute (BnF–CNRS) whi…
Combining hectometric and decametric satellite observations to provide near real time decametric FAPAR product
2017
Abstract A wide range of ecological, agricultural, hydrological and meteorological applications at local to regional scales requires decametric biophysical data. However, before the launch of SENTINEL-2A, only few decametric products are produced and most of them remain limited by the small number of available observations, mostly due to a moderate revisit frequency combined with cloud occurrence. Conversely, kilometric and hectometric biophysical products are now widely available with almost complete and continuous coverage, but the associated spatial resolution limits the application over heterogeneous landscapes. The objective of this study is to combine unfrequent decametric spatial res…
Anxiété, Mémoire et Traitement de l'Information Temporelle
2019
Optimizacion en procesos cognitivos y su repercusión en el aprendizaje de la danza
2009
El presente trabajo ha pretendido, en última instancia, acercar la psicología al mundo de la danza: desde la investigación sobre los mecanismos psicológicos que subyacen a este comportamiento (danzar); pasando por la demostración de sus beneficios, también a nivel cognitivo, que repercuten en otras áreas del individuo; hasta la profundización en el proceso de enseñanza/aprendizaje de la danza para buscar la forma de optimizarlo. En su justificación teórica, esta tesis analiza exhaustivamente el fenómeno de la Danza. Así, hace un recorrido que nos muestra la repercusión social que la danza ha tenido a lo largo de la historia; describe las peculiaridades tanto de la danza clásica, como modern…
Comments on space–time signature
1993
In terms of three signs associated to two vectors and to a 2-plane, a formula for the signature of any four-dimensional metric is given. In the process, a simple expression for the sign of the Lorentzian metric signature is obtained. The rela- tionship between these results and those already known are commented upon.
Les temps de parcours interurbains en France : Une analyse géo-historique
2016
National audience; Un nombre croissant de chercheurs profite des progrès informatiques pour reconstruire les réseaux de transport à l'intérieur de Systèmes d'Informations Géo-Historiques (SIG-H). De tels corpus permettent en effet d'apprécier les effets des investissements successifs dans les infrastructures sur les dynamiques territoriales de long-terme. Cet article présente un SIG-H original, initialement développé au sein du laboratoire ThéMA et complété par des chercheurs de l'IFSTTAR pour le projet de recherche BASECOGV, financé par la DRI dans le cadre du PREDIT. Le projet BASECOGV portant sur les Retombées Economiques Indirectes (REI) des Trains à Grande Vitesse (TGV) en France, le S…
Les réseaux de transport à grande vitesse en France : construction et apports d'un système d'information géo-historique
2016
The originality of this Historical Geographic Information System (SIGH) is that it is focuses on various transport networks (road and railway) at several temporal scale (from 1975 to 2010). The corresponding spatial network offers the possibility to generate spatial and temporal matrices across France, at different dates. These possibilities open important spatial analysis perspectives. They allow for example to assess the effect of investments in high-speed transport supply on the durations of intercity trips, also multiple opportunity in the field of Regional Science and Complex Systems analysis.