A5086330669- Planetary Science and Exploration
- Astro and Planetary Science
- Geophysics and Gravity Measurements
- Educational Games and Gamification
- Geomagnetism and Paleomagnetism Studies
- Space Exploration and Technology
- Innovative Teaching and Learning Methods
- Spacecraft Design and Technology
- Space Science and Extraterrestrial Life
- Solar and Space Plasma Dynamics
- GNSS positioning and interference
- Open Education and E-Learning
- Online Learning and Analytics
- Spacecraft Dynamics and Control
- Scientific Research and Discoveries
- Multimedia Communication and Technology
- Digital Games and Media
- Spacecraft and Cryogenic Technologies
- Ionosphere and magnetosphere dynamics
- Usability and User Interface Design
- Educational Tools and Methods
- Knowledge Management and Sharing
- Semantic Web and Ontologies
- Space Satellite Systems and Control
- Inertial Sensor and Navigation
Centre National d'Études Spatiales
2014-2024
Airbus (Italy)
2024
Laboratoire d'Informatique en Images et Systèmes d'Information
2012-2023
Centre National de la Recherche Scientifique
2009-2023
Université Claude Bernard Lyon 1
2012-2023
Institut National des Sciences Appliquées de Lyon
2017-2023
Université Savoie Mont Blanc
2010-2022
European Space Agency
2022
Géosciences Environnement Toulouse
2019
Observatoire Midi-Pyrénées
2019
Using three months of GPS satellite‐to‐satellite tracking and accelerometer data the CHAMP satellite mission, a new long‐wavelength global gravity field model, called EIGEN‐1S, has been prepared in joint German‐French effort. The solution is derived solely from analysis orbit perturbations, i.e. independent oceanic continental surface data. EIGEN‐1S results geoid with an approximation error about 20 cm terms 5 × degree block mean values, which improvement more than factor 2 compared to...
Abstract Reprocessed Gravity Field and Steady‐State Ocean Circulation Explorer (GOCE) gravity gradient data were combined with from Laser Geodynamics Satellite (LAGEOS) 1/2 Recovery Climate Experiment (GRACE) to generate a satellite‐only field model degree 260 using the direct approach, named DIR‐R4. When compared Earth Gravitational Model 2008 (EGM2008), it is more accurate at low medium resolution thanks GOCE GRACE data. earlier releases of ESA models, high degrees owing larger amount...
Abstract Gravity field and steady state Ocean Circulation Explorer (GOCE) gravity gradient data of the entire science mission from LAGEOS 1/2 Recovery Climate Experiment (GRACE) were combined in construction a satellite‐only model to maximum degree 300. When compared Earth Gravitational Model 2008, it is more accurate at low medium resolution, thanks GOCE GRACE data. earlier releases European Space Agency models, high degrees owing larger amount ingested, which was moreover taken lower...
Gamification is widely used to foster user motivation. Recent studies show that users can be more or less receptive different game elements, based on their personality player profile. Consequently, recent work tailored gamification tries identify links between types and motivating elements. However findings are very heterogeneous due contexts, typologies characterize users, implementations of Our seeks obtain generalizable in order the main factors will support design choices when tailoring...
We report independent results from two subgroups of the Mars Express Radio Science (MaRS) team who independently analyzed (MEX) radio tracking data for purpose determining consistently gravitational attraction moon Phobos on MEX spacecraft, and hence mass Phobos. New values parameter (GM = 0.7127 ± 0.0021 × 10 −3 km 3 /s 2 ) density (1876 20 kg/m provide meaningful new constraints corresponding range body's porosity (30% 5%), a basis improved interpretation internal structure. conclude that...
Several studies have been conducted in recent years into the effects of gamification on learner motivation. However, little is known about how profiles affect impact specific game elements. This research analyzes effect a gamified mathematic learning environment motivation and motivated behaviors 258 learners secondary schools France. Overall, results indicate that randomly assigned elements generally demotivate learners. A more thorough analysis revealed has positive most amotivated to do...
A new model of the Earth's gravity field, called GRIM5‐S1, was prepared in a joint German‐French effort. The solution is based on satellite orbit perturbation analysis and exploits tracking data from 21 satellites to solve simultaneously for gravitational ocean tide potential station positions. satellite‐only results homogeneous representation geoid with an approximation error about 45 cm terms 5×5 degree block mean values, performs globally better restitution than any previous field model....
This paper deals with the subject of personalization in technology-enhanced learning (TEL) Systems. As we want user centred solutions, claim that considerable advantage can be gained from allowing observation and interpretation learnerspsila interactions traces TEL systems. The key concepts our approach are modelled traces, trace transformations. These transformations such as abstraction or filtering enable a better understanding taking place systems allow to provide services for personalization.
The work reported here takes place in the educational domain. Learning with Computer-Based Environments changes habits, especially for teachers. In this paper, we wish to demonstrate through examples how learning sessions set up a Game-Based environment may be regulated by teacher thanks observation facilities. Providing teachers feedback (via observation) on ongoing activity is thus central being aware of what happening classroom, order react an appropriate way and adapt given pedagogical...
The closest ever fly-by of the Martian moon Phobos, performed by European Space Agency's Mars Express spacecraft, gives a unique opportunity to sharpen and test Planetary Radio Interferometry Doppler Experiments (PRIDE) technique in interest studying planet - satellite systems. aim this work is demonstrate providing high precision positional measurements planetary spacecraft using spacecraft. will be used framework various missions, particular mode. We advanced novel approach data processing...
The Venusian geological features are poorly gravity-resolved, and the state of core is not well constrained, preventing an understanding Venus’ cooling history. EnVision candidate mission to ESA’s Cosmic Vision Programme consists a low-altitude orbiter investigate atmospheric processes. gravity experiment aboard this aims determine geophysical parameters fully characterize its internal structure. By analyzing radio-tracking data that will be acquired through daily operations over six days...
The discovery in the Solar System of more and binary asteroids, or even triple asteroids with odd shapes, has triggered studies new space missions to these bodies related their dynamical behavior. Martian moons, due characteristics, are focus similar interest. In this context, aims paper revisit mutual gravitational potential two celestial bodies, evaluate effects on orbit terms, which often neglected. rotational dynamics is not addressed here. method uses complex gravity spherical harmonic...
The main characteristic of Venus that distinguishes it from the other planets is its rotation period, which very long at 243 Earth days. Although several solutions this period have been determined using different methods (either Venus’s orbit or Earth), parameter remains poorly constrained. In particular, there a difference 7 minutes between lowest and highest estimates period. Currently, only 3 minute variation in Length Of Day (LOD) can be explained by modeling various effects...
In this paper, we propose an approach based on visualization to support the teacher observe students' activities. After comparing teaching in classical rooms and e-learning systems, present some techniques used various domains. The paper then focuses order help better interpret what happens during learning session.