Journal of Gender Equality Disability Social Inclusion and Children
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On an interval prediction of COVID-19 development based on a SEIR epidemic model
No full textIn this report, a revised version of the well-known mathematical outbreak SEIR model is used to analyze the epidemic's course of COVID-19 in eight different countries. The proposed model enhancements reflect the societal feedback on pandemic and confinement features. The parameters of the SEIR model are identified by using publicly available data for France, Italy, Spain, Germany, Brazil, Russia, New York State (US), and China. The identified model is then applied for the prediction of the SARS-CoV-2 virus propagation under different conditions of confinement. For this purpose, an interval predictor is designed allowing variations and uncertainties in the model parameters to be taken into account. The code and the utilized data are available in Github
La place du risque de réputation et du risque de mauvaise gouvernance dans les comptes annuels, le rapport de gestion et les autres documents imposés par la réglementation, élaborés par les sociétés du SBF 120 soumises aux normes comptables françaises pour l’exercice comptable 2018
No full text5th annual newsletter and minutes of the two demonstration events and of the stakeholder meeting organised during the 5th year of the project
No full textDemonstration of a precision feeding system for growing pigs at a commercial farm operation to demonstrate practical feasibility
No full textSuivi de la dévalaison d'anguilles argentées en 2018-2019 (7ème année) sur la Vilaine à l'aide d'un DIDSON.
No full textThe downstream run of silver eels has been monitored for the seventh year with a muti-beam sonar (DIDSON)positioned on a guidance rail at the fourth gate of the Arzal dam at the head of the Vilaine estuary. The2017-2018 season is impacted by a technical problem occuring at the end of January. The concentrator ofthe aquisition chamber acting as a focus to the beam has been twisted, and the detection diminished stronglyfrom 9m. This problem has been repared from 13 december. It is partly offset by assumptions of decreasingdetection effciency and by not taking into accounts detections beyond 11 m in extrapolations. The detectioneffciency has been calculated according to the position, the distance to the sonar, and the eels sizes. Usingthis effciency, the percentage of the surface of the gate monitored by the sonar, and the ratio of the flow of the fourth gate to the other gates, the number of eels counted when the monitoring of the sonar was judgedaccurate (1 678) have been extrapolated first on the whole gate than to the whole dam to obtain an estimateof the run (N=52 534). From these values, a model was built to estimate the run of eels when the sonar wasbadly positioned or when it failed to record properly (N=11 182). The annual run of silver eel on the Vilaineis estimated at (N=64 640) corresponding to an estimated weight of 36 tons. This value is decreasing whenit is compared to the downstream migration from previous years (130 000, 119 600, 114 200, 69 500 (Partialmonitoring), 114 200 ) from 2012-2013 to 2017-2018.Les dévalaisons d'anguilles argentées ont été suivies pour la septième année consécutive à l'aide d'un sonarmultifaisceaux (DIDSON) placé sur un rail porteur au niveau du quatrième pertuis de vannes du barraged'Arzal à la limite de l'estuaire de la Vilaine. Le concentrateur de la chambre d'acquisition qui sert àfocaliser le faisceau s'est tordu à la fin du mois de janvier de la de saison 2017-2018, et la détection diminuefortement à partir de 9m. Ce problème de "myopie" a été réparé le 13 décembre. Il est en partie compensépar des hypothèses de diminution de l'efficacité de détection et la non prise en compte des détectionsau-delà de 11 m dans les extrapolations. Un nombre total de 1739 anguilles argentées a été compté lorsdes dépouillements. L'efficacité de la détection a été calculée en fonction de la taille des anguilles, de laposition du DIDSON et de la distance au DIDSON. Pour extrapoler les effectifs migrants à l'ensemble del'ouvrage, le pourcentage de surface de la vanne suivi par le sonar, et le ratio des débits de la vanne 4 auxautres vannes ont été utilisés. Les effectifs suivis pour les configurations correctes, c'est à dire quand leDIDSON est bien positionné par rapport aux écoulements, en surface et au fond sur la vanne (N=1 678),sont extrapolés à l'ensemble des vannes (N=52 534). Lorsque le DIDSON est mal placé, les effectifs sontestimés à partir des densités du jour même (N=11 182). L'estimation quantitative de la dévalaison surla Vilaine, sur la période de suivi s'établit à (N=64 640) soit 35.8 tonnes. Cette valeur est en diminutionlorsqu'on la compare aux dévalaisons des années précédentes (130 000, 119 600, 114 200, 69 500 (Suivipartiel), 114 200, 81 336 et 70 099) de 2012-2013 à 2017-2018
State of the Art : Classification algorithms for sensor fusion in the approach phaseCocotier Project
No full textThis report first formulates the problem that must be approached in the work package LOT 5.9 as well as the identified challenges to solve this problem with a data driven approach (model based approaches are the focus of another work package). It then presents a state of the art of the methods that are commonly used to solve a fault detection problem and it provides an overview of the different data driven approaches applicable to the problem.Standard unsupervised learning methods (Section 3.1) as well as supervised learning methods (Section 3.2) are presented. A focus is then put on data driven dynamic methods (Section 3.3) that allow one to account for dynamics and evolving environments, in par- ticular dynamic clustering methods are presented in Section 3.3.1, including the in-house dynamic clustering tool DyClee, and correlation-based methods are presented in 3.3.2.Specific methods that can be used to face identified challenges (fusion, imbalanced data) are introduced in Section 4 and some metrics that can be used to evaluate a model obtained from a learning process are given
