Erlen : Une interface tangible pour la réduction de la consommation énergétique sur le poste de travail

International audienceIn this demonstration paper, we present the Erlen environment. A set of tangible interfaces dedicated to raising awareness of employees and the workplace’s energy consumption reduction.Dans cette article de démonstration, nous présentons l’environne- ment Erlen. Un ensemble d’interfaces tangibles dédiées à la prise de conscience des employés et à la réduction de la consommation énergétique d’un poste de travail

Erlen : Une interface tangible pour la réduction de la consommation énergétique sur le poste de travail

International audienceIn this demonstration paper, we present the Erlen environment. A set of tangible interfaces dedicated to raising awareness of employees and the workplace’s energy consumption reduction.Dans cette article de démonstration, nous présentons l’environne- ment Erlen. Un ensemble d’interfaces tangibles dédiées à la prise de conscience des employés et à la réduction de la consommation énergétique d’un poste de travail

Exploring Smartphone-enabled Text Selection in AR-HMD

International audienceText editing is important and at the core of most complex tasks, likewriting an email or browsing the web. Efficient and sophisticatedtechniques exist on desktops and touch devices, but are still under-explored for Augmented Reality Head Mounted Display (AR-HMD).Performing text selection, a necessary step before text editing, in ARdisplay commonly uses techniques such as hand-tracking, voice com-mands, eye/head-gaze, which are cumbersome and lack precision.In this paper, we explore the use of a smartphone as an input deviceto support text selection in AR-HMD because of its availability,familiarity, and social acceptability. We propose four eyes-free textselection techniques, all using a smartphone — continuous touch,discrete touch, spatial movement, and raycasting. We compare themin a user study where users have to select text at various granularitylevels. Our results suggest that continuous touch, in which we usedthe smartphone as a trackpad, outperforms the other three techniquesin terms of task completion time, accuracy, and user preference

Production of H2 by water radiolysis in cement paste under electron irradiation: A joint experimental and theoretical study

International audienceLong-term confinement of nuclear waste is one of the main challenges faced by the nuclear industry. Fission products such as 90 Sr and 137 Cs, both β − emitters known to induce serious health hazards, represent the largest fraction of nuclear waste. Cement is a good candidate to store them, provided it can resist the effects of irradiation over time. Here, we have investigated the effects of β − decay on cement by performing electron irradiation experiments on different samples. We show that H 2 production in cement, the main effect of water radiolysis, depends strongly on composition and relative humidity. First-principles calculations indicate that the water-rich interlayer regions with Ca 2+ ions act as electron traps that promote the formation of H 2. They also show that holes localize in water-rich regions in low Ca content samples and are then able to participate in H 2 production. This work provides new understanding of radiolysis effects in cements

DroneSAR: Extending Physical Spaces in Spatial Augmented Reality using Projection on a Drone

International audienceSpatial Augmented Reality (SAR) transforms real-world objects into interactive displays by projecting digital content using video projectors. SAR enables co-located collaboration immediately between multiple viewers without the need to wear any special glasses. Unfortunately, one major limitation of SAR is that visual content can only be projected onto its physical supports. As a result, displaying User Interfaces (UI) widgets such as menus and pop-up windows in SAR is very challenging. We are trying to address this limitation by extending SAR space in mid-air. In this paper, we propose Drone-SAR, which extends the physical space of SAR by projecting digital information dynamically on the tracked panels mounted on a drone. DroneSAR is a proof of concept of novel SAR User Interface (UI), which provides support for 2D widgets (i.e., label, menu, interactive tools, etc.) to enrich SAR interactive experience. We also describe the implementation details of our proposed approach

Enseignement du numérique : Les apports d'un Learning Lab

National audienceDans cette communication, nous décrivons les évolutions de l’apprentissage liées à l’apport du numérique. Parmi ces évolutions, on voit apparaître de nouveaux lieux de formation appelés « learning labs ». L’objectif de cet article est de présenter comment la mise en œuvre d’un tel lieu (on parle aussi de tiers-lieu) offre de nouvelles perspectives, modifie la manière d’enseigner et donne des résultats intéressants à la fois pour les enseignants (en terme d’évaluation des savoirs et des savoir-faire) et pour les apprenants (en terme de motivation, d’immersion et d’échanges). Dans un second temps, nous nous focaliserons sur la place prépondérante que peut prendre l’électronique dans la mise en place de nouvelles formations, notamment autour des objets connectés. Nous illustrerons concrètement notre propos autour d’une formation expérimentale qui a obtenu le label GEN (Grande Ecole du Numérique

Teaching Digital Literacy: The Outcomes from a Learning Lab

International audienceIn this article, we describe the recent developments in higher education relative to the digital outcomes. Between these evolutions, we are witnessing new teaching locations or sites called "learning labs". The aim of this article is to present how the deployment of such a location (sometimes named third places) can offer some new perspectives, modifies the way of teaching and gives some interesting results both from the teachers' point of view (in terms of assessment of knowledge and know-how) and for the learners (in terms of motivation, immersion and exchanges). In a second phase, we will focus on the predominant role that electronics can take in setting up formations, especially around "connected objects" (i.e. communicating devices connected to networks). We will illustrate concretely our idea around an experimental training which has obtained the national label GEN ("Grande Ecole du Numérique")

Scientific Outreach with Teegi, a Tangible EEG Interface to Talk about Neurotechnologies

International audienceTeegi is an anthropomorphic and tangible avatar exposing a users' brain activity in real time. It is connected to a device sensing the brain by means of electroencephalog-raphy (EEG). Teegi moves its hands and feet and closes its eyes along with the person being monitored. It also displays on its scalp the associated EEG signals, thanks to a semi-spherical display made of LEDs. Attendees can interact directly with Teegi – e.g. move its limbs – to discover by themselves the underlying brain processes. Teegi can be used for scientific outreach to introduce neurotechnologies in general and brain-computer interfaces (BCI) in particular

Approach of dynamic modelling of a hydraulic System

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Production of H2 by water radiolysis in cement paste under electron irradiation: A joint experimental and theoretical study

© 2017 Elsevier Ltd Long-term confinement of nuclear waste is one of the main challenges faced by the nuclear industry. Fission products such as 90Sr and 137Cs, both β− emitters known to induce serious health hazards, represent the largest fraction of nuclear waste. Cement is a good candidate to store them, provided it can resist the effects of irradiation over time. Here, we have investigated the effects of β− decay on cement by performing electron irradiation experiments on different samples. We show that H2 production in cement, the main effect of water radiolysis, depends strongly on composition and relative humidity. First-principles calculations indicate that the water-rich interlayer regions with Ca2+ ions act as electron traps that promote the formation of H2. They also show that holes localize in water-rich regions in low Ca content samples and are then able to participate in H2 production. This work provides new understanding of radiolysis effects in cements