In order to investigate an efficient water control method suitable for the bottom occurring during production process of horizontal wells in reservoirs, characteristic curves a Fluidic Diode AICD (Automatic Inflow Control Device) were tested, and mathematical modeling is proposed. First, working principle was analyzed; subsequently, test platform designed built independently, pressure experimen...

The predictive accuracy of a survival model can be summarized using extensions of the proportion of variation explained by the model, or R2, commonly used for continuous response models, or using extensions of sensitivity and specificity, which are commonly used for binary response models. In this article we propose new time-dependent accuracy summaries based on time-specific versions of sensit...

We propose an algorithm that calculates isogenies between elliptic curves defined over extension K of Q 2 . It consists in efficiently solving with a logarithmic loss 2-adic precision the first-order differential equation satisfied by isogeny. give some applications, especially computing finite fields characteristic and irreducible polynomials, both quasi-linear time degree.