Grand Challenges in Protoplanetary Disc Modelling

The Protoplanetary Discussions conference --- held in Edinburgh, UK, from 7th --11th March 2016 --- included several open sessions led by participants. This paper reports on the discussions collectively concerned with the multiphysics modelling of protoplanetary discs, including the self-consistent calculation of gas and dust dynamics, radiative transfer and chemistry. After a short introduction to each of these disciplines in isolation, we identify a series of burning questions and grand challenges associated with their continuing development and integration. We then discuss potential pathways towards solving these challenges, grouped by strategical, technical and collaborative developments. This paper is not intended to be a review, but rather to motivate and direct future research and collaboration across typically distinct fields based on \textit{community driven input}, to encourage further progress in our understanding of circumstellar and protoplanetary discs

Photography-based taxonomy is inadequate, unnecessary, and potentially harmful for biological sciences

The question whether taxonomic descriptions naming new animal species without type specimen(s) deposited in collections should be accepted for publication by scientific journals and allowed by the Code has already been discussed in Zootaxa (Dubois & Nemésio 2007; Donegan 2008, 2009; Nemésio 2009a–b; Dubois 2009; Gentile & Snell 2009; Minelli 2009; Cianferoni & Bartolozzi 2016; Amorim et al. 2016). This question was again raised in a letter supported by 35 signatories published in the journal Nature (Pape et al. 2016) on 15 September 2016. On 25 September 2016, the following rebuttal (strictly limited to 300 words as per the editorial rules of Nature) was submitted to Nature, which on 18 October 2016 refused to publish it. As we think this problem is a very important one for zoological taxonomy, this text is published here exactly as submitted to Nature, followed by the list of the 493 taxonomists and collection-based researchers who signed it in the short time span from 20 September to 6 October 2016

Une interface gestuelle pour l'apprentissage de la rythmique

Session "Atelier IHMA"National audienceLe système pédagogique d'apprentissage de la rythmique que nous présentons dans ce papier relève à la fois de l'interaction gestuelle et de l'instrument de musique virtuel. Il utilise le gant de données CyberGlove® comme modalité en entrée pour piloter une application musicale d'enregistrement, de production et de modification de sons de percussion. Le papier présente les principes de base du système qui consiste à générer des sons de percussion par reconnaissance de gestes de la main. Cette reconnaissance de la gestuelle est obtenue en temps réel par une méthode de type logique floue

Gesture Analysis : invariant laws in Movement

International audienc

Interaction with In-Vehicle Electronic Systems. A Complete Description of a Neural Network Approach

International audienc

Gesture in Human-Computer Interaction and Simulation

This book is a selection of revised papers presented at Gesture Workshop 2005. It offers a wide overview of the most recent results and work in progress related to gesture-based communication

Virtual humanoids endowed with expressive communication gestures: the HuGEx project

National audienc

Agent virtuel signeur - Aide à la communication pour personnes sourdes

National audienceCet article présente un système permettant de capturer et de structurer une base de connaissance de gestes de la Langue des Signes Française (LSF), et de l'utiliser pour la génération de mouvement d'humanoïde virtuel. On s'intéresse ici plus spécifiquement à la qualité expressive des gestes (quel style de geste : fluide, tendu, énervé), et à ses représentations sémantiques. L'application envisagée est celle d'un humanoïde signeur capable de générer un ensemble de gestes de la LSF. Nous avons constitué une base d'information semi-structurée de gestes capturés comprenant les mouvements corporels, les gestes des bras et des mains ainsi que les mimiques faciales. L'analyse des signaux de cette base d'information nous permet d'extraire des caractéristiques propres à la variabilité des gestes, à la fois d'un point de vue sémantique (segmentation suivant la structure des gestes de la LSF) et d'un point de vue du style d'exécution. Ces caractéristiques sont intégrées dans des modèles de synthèse évalués qualitativement par des personnes sourdes expertes de la LSF, suivant des critères d'intelligibilité et de réalisme des animations produites

Virtual Agent for Deaf Signing Gestures

International audienceWe describe in this paper a system for automatically synthesizing deaf signing animations from motion data captured on real deaf subjects. Moreover, we create a virtual agent endowed with expressive gestures. Our attention is focused on the expressiveness of gesture (what type of gesture: fluidity, tension, anger) and on its semantic representations. Our approach relies on a data-driven animation scheme. From motion data captured thanks to an optical system and data gloves, we try to extract relevant features of communicative gestures, and to re-synthesize them afterwards with style variation. Within this framework, a motion database containing the whole body, hands motion and facial expressions has been built. The analysis of signals makes possible the enrichment of this database by including segmentation and annotation descriptors. Analysis and synthesis algorithms are applied to the generation of a set of French Sign Language gestures. Key words Communication for deaf people, sign language gestures, virtual signer agent, gesture database