Search results for "Informatique"
showing 10 items of 121 documents
EVASPA (EVapotranspiration Assessment from SPAce) tool: an overview
2013
International audience; Evapotranspiration (ET) is a fundamental variable of the hydrological cycle and its estimation is required for irrigation management, water resources planning and environmental studies. Remote sensing provides spatially distributed cost-effective information for ET maps production at regional scale. We have developed EVASPA too for mapping ET from remote sensing data at spatial and temporal scales relevant to hydrological or agronomica studies. EVASPA includes several algorithms for estimating evapotranspiration and various equations for estimating the required input information (net radiation, ground heat flux, evaporative fraction…), which provides a way to assess …
Adaptive high-gain extended kalman filter and applications
2010
The work concerns the ``observability problem” --- the reconstruction of a dynamic process's full state from a partially measured state--- for nonlinear dynamic systems. The Extended Kalman Filter (EKF) is a widely-used observer for such nonlinear systems. However it suffers from a lack of theoretical justifications and displays poor performance when the estimated state is far from the real state, e.g. due to large perturbations, a poor initial state estimate, etc… We propose a solution to these problems, the Adaptive High-Gain (EKF). Observability theory reveals the existence of special representations characterizing nonlinear systems having the observability property. Such representations…
Détection automatique des repères visuels associés à la dépression
2018
Depression is the most prevalent mood disorder worldwide having a significant impact on well-being and functionality, and important personal, family and societal effects. The early and accurate detection of signs related to depression could have many benefits for both clinicians and affected individuals. The present work aimed at developing and clinically testing a methodology able to detect visual signs of depression and support clinician decisions.Several analysis pipelines were implemented, focusing on motion representation algorithms, including Local Curvelet Binary Patterns-Three Orthogonal Planes (LCBP-TOP), Local Curvelet Binary Patterns- Pairwise Orthogonal Planes (LCBP-POP), Landma…
Diffusion des systèmes informatiques au sein des organisations et diversification des utilisateurs.
1986
International audience
Comparaison internationale : à la recherche de jeunes diplômés de l'enseignement supérieur compétents en informatique
2003
By 1990, tow-thirds of all the jobs available for graduates with higher educational qualifications required advanced computer skills. However, only 30% of these graduates felt that they mastered these skills sufficiently well. Many of them have had to complete their initial vocational training by taking continuing training courses. In addition, mastering computer skills usually means earning higher wages. These results were based on a survey carried out on 35000 people who had graduated in disciplines of all kinds in eleven European countries and Japan.
Symmetry-assisted adversaries for quantum state generation
2011
We introduce a new quantum adversary method to prove lower bounds on the query complexity of the quantum state generation problem. This problem encompasses both, the computation of partial or total functions and the preparation of target quantum states. There has been hope for quite some time that quantum state generation might be a route to tackle the $backslash$sc Graph Isomorphism problem. We show that for the related problem of $backslash$sc Index Erasure our method leads to a lower bound of $backslash Omega(backslash sqrt N)$ which matches an upper bound obtained via reduction to quantum search on $N$ elements. This closes an open problem first raised by Shi [FOCS'02]. Our approach is …
Les conditions de vie étudiante en période de confinement : premiers résultats de l’enquête
2020
Etude de l'IREDU, téléchargeable sur https://iredu.u-bourgogne.fr/wp-content/uploads/2020/06/20020.pdf; Le confinement a été pour nombre de Français un bouleversement dans leur quotidien : les pratiques sociales ont dû ainsi s’adapter à cette période d’isolement pour réduire les effets de la crise sanitaire que de très nombreux pays dans le monde ont connu. Cette période, allant du 17 mars au 11 mai 2020, a eu des conséquences importantes sur plusieurs catégories de la population. Les étudiants ont été touchés à plusieurs titres. Les conditions d’études se sont radicalement transformées avec la fermeture en présentiel des établissements d’enseignement supérieur. Si l’enseignement à distance…
Quelles compétences en TIC pour les enseignants en formation ?
2000
Il s'agit d'une contribution du groupe de recherche INRP de l'IUFM de Bourgogne.L'équipe, composée de cinq praticiens de l'IUFM de Bourgogne (Claudine Oudot, Philippe Delvalée, Mireille Duchêne, Jacques Guelorget, Patrick Grosjean), centre ses travaux sur l'analyse des compétences nécessaires pour que les enseignants puissent utiliser à bon escient dans le cadre de leur profession les outils et instruments offerts par les technologies de l'information et de la communication. Elle prête attention à la fois aux compétences de nature générale et aux compétences relatives à différentes disciplines.La contribution débute par un aperçu de la notion de compétences et de son application dans le dom…
Visual scale factor for speed perception
2011
Speed perception is an important task depending mainly on optic flow that the driver must perform continuously to control his/her vehicle. Unfortunately, it appears that in some driving simulators speed perception is under estimated, leading into speed production higher than in real conditions. Perceptual validity is then not good enough to study driver’s behavior. To solve this problem, a technique has recently seen the light, which consists of modifying the geometric field of view (GFOV) while keeping the real field of view (FOV) constant. We define our visual scale factor as the ratio between the GFOV and the FOV. The present study has been carried out on the SAAM dynamic driving simulat…
L'informatique dans l'enseignement de base : bilan coût-efficacité
1993
Eicher Jean-Claude. L'informatique dans l'enseignement de base : bilan coût-efficacité. In: Bulletin de psychologie, tome 46 n°412, 1993. Cognition Education Langage. En hommage à Jacques Wittwer. pp. 712-718.