Suchergebnisse

Age : 8-9 ans Niveau de lecture : CE2Découvre les merveilleuses aventures de Lola et Woufi!Lola et Woufi sont les meilleurs amis du monde. Aujourd'hui, toute la famille part en vacances, y compris Titou, l'ami de Lola!Des petits livres pour apprendre à lire. EXTRAITEt voilà, on y est, le premier jour des grandes vacances est enfin arrivé! Lola saute partout dans sa chambre comme une petite folle, et Woufi aussi. Leurs premières vacances à la mer, quel bonheur, et en plus Titou va les accompagner!À PROPOS DE LA SERIESuivez les aventures de Lola, une petite fille ordinaire et son chien Wouf

Models for the assessment of the risk of complex engineering systems are affected by uncertainties due to the randomness of several phenomena involved and the incomplete knowledge about some of the characteristics of the system. The objective of this article is to provide operative guidelines to handle some conceptual and technical issues related to the treatment of uncertainty in risk assessment for engineering practice. In particular, the following issues are addressed: (1) quantitative modeling and representation of uncertainty coherently with the information available on the system of interest; (2) propagation of the uncertainty from the input(s) to the output(s) of the system model; (3) (Bayesian) updating as new information on the system becomes available; and (4) modeling and representation of dependences among the input variables and parameters of the system model. Different approaches and methods are recommended for efficiently tackling each of issues (1)‒(4) above; the tools considered are derived from both classical probability theory as well as alternative, nonfully probabilistic uncertainty representation frameworks (e.g., possibility theory). The recommendations drawn are supported by the results obtained in illustrative applications of literature.