Search results for " Computer science"

Périphérique d'interaction apte à contrôler un élément de toucher et de préhension d'objets virtuels multidimensionnels

2012

Ne pas le transférer sur HAL (déjà déposé sur HAL par le co-auteur (hors ENSAM)) L’invention concerne un périphérique d’interaction (1) apte à contrôler un élément de toucher et de préhension d’objets virtuels multidimensionnels, comportant au moins deux modules d’interaction (20), chaque module d’interaction (20) étant destiné à être actionné par un doigt d’un opérateur et comportant un capteur de commande permettant de commander un déplacement, selon un nombre de degrés de liberté prédéterminé, d’une partie de l’élément de toucher et de préhension d’objets virtuels par déplacement en flexion/extension et/ou adduction/abduction du doigt de l’opérateur, et un vibreur apte à émettre une vibr…

Étude du comportement de l'aorte dans le cadre de pathologie de type anévrisme

2013

International audience; Lorsqu'un patient présente une dilatation de l'aorte impliquant la possibilité d'une intervention chirurgicale (en raison du risque de rupture), la décision thérapeutique est prise en fonction du rapport des diamètres de l'artère. Toutefois cette mesure dimensionnelle est insuffisante et doit être compléter d'une estimation de la compliance de l'artère. C'est un travail complexe prenant en compte divers aspects. C'est une première approche qui présentée dans ce papier. Elle a pour objectif de quantifier les déformations de fantômes (répliques) en silicone ayant des géométries simplifiées mais proches de celle des patients présentant une pathologie de type anévrisme. …

Numerical models contribute to expand the sweet taste chemical space

2021

Quantum Cellular Automata: a Short Overview of Molecular Problem

2018

International audience

L'animations 3D, un soutien à l'apprentissage d'informations spatiales ?

2015

Conférence EIAH 2015; Les ressources pédagogiques proposant des contenus en trois dimensions ont fait leur apparition dans de nombreux domaines. Ainsi l'enseignement de l'anatomie, qui faisait jusque-là appel à des croquis en deux dimensions, s'enrichit de ces nouvelles technologies numériques. Les animations avec modèles tridimensionnels rotatifs (animation 3D) offrent à l'apprenant des informations spatiales sur l'objet anatomique indisponibles avec les graphiques en deux dimensions. Toutefois, l'influence des habiletés spatiales dans le traitement cognitif des animations 3D ainsi que la nécessité de prendre en compte les relations spatiales entre l'objet anatomique et le corps tridimensi…

Analysing the mechanisms of common ground in collaborative web-based interaction

2001

The ideas presented in this paper are challenged especially by the certain critical questions concerning web-based interaction and the qualitative analysis of such interaction and learning. The question arises whether the students from different contexts and countries are able to reach such interaction that would lead them to educationally relevant higher-level discussion and learning in web-based environments. Furthermore, as this field of study is fairly novel, there is a shortage of established methodologies for analysing computer-mediated communication and the complex phenomena it encompasses. In this presentation, we attempt to find new approaches to discover how people establish and m…

Uncertainty-reducing cooperation scripts in online learning environments

2004

Online learning courses can create new interaction situations for participants who have not previously worked with each other. Initially, there is some degree of uncertainty between participants in these interaction situations. According to the uncertainty reduction theory, low uncertainty increases theamount of discourse and decreases information seeking. Thus, uncertainty may influence online discourseand learning. However, the relation of uncertainty reduction to learning outcomes has not yet been investigated systematically. Cooperation scripts may reduce uncertainty, and therefore enhance learning.A cooperation script, which aims to reduce uncertainty at a cognitive level, was chosen f…

Agent-based modelling of urban expansion and land cover change: a prototype for the analysis of commuting patterns in Geneva, Switzerland

2023

Agent-based modelling has been used in many studies of urban expansion, land use and land cover change patterns. While representing a powerful tool for depicting and formulating predictions about the evolution of interconnected complex systems, this method also poses a series of challenges to the researcher community, most notably in terms of model calibration and validation, and output data visualisation. Based on these findings, we present an agent-based model developed in GAMA, coupled with a data exploration platform coded in python, for analysing commuting patterns in the canton of Geneva, Switzerland. Output datasets generated from a set of simple evolution rules for the agents, are d…

A Neural Network Meta-Model and its Application for Manufacturing

2015

International audience; Manufacturing generates a vast amount of data both from operations and simulation. Extracting appropriate information from this data can provide insights to increase a manufacturer's competitive advantage through improved sustainability, productivity, and flexibility of their operations. Manufacturers, as well as other industries, have successfully applied a promising statistical learning technique, called neural networks (NNs), to extract meaningful information from large data sets, so called big data. However, the application of NN to manufacturing problems remains limited because it involves the specialized skills of a data scientist. This paper introduces an appr…

Know Beyond Seeing: Combining Computer Vision with Semantic Reasoning

2018

International audience; To date, computer vision systems are limited to extract the digital data of what the cameras "see". However, the meaning of what they observe could be greatly enhanced by considering the environment and common-sense knowledge. A new approach to combine computer vision with semantic modeling has been developed. This approach extracts the knowledge from images and uses it to perform real-time reasoning according to the contextual information, events of interest and logic rules. The reasoning with image knowledge allows protecting the privacy of the users, to overcome some problems of computer vision such as occlusion and missed detections and to offer services such as …