Pisa testing

Beyond Pisa 2015: a Longer-term Strategy of Pisa

d) PISA assesses both subject matter content knowledge, on the one hand, and the capacity of individuals to apply that knowledge creatively, including in unfamiliar contexts, on the other. Until now PISA has assessed students in three main domains in each round: reading, mathematics and science. These domains cover some of the fundamental skills needed to continue on with higher education or su...

The PISA method simplified.

We have read with interest the study by Messika-Zeitoun et al. 1 showing that using a fixed angle value of 100 provides an accurate estimation of the miral valve area (MVA) by the proximal isove-locity surface area (PISA) method in patients with mitral stenosis (MS). We appreciate the study as a means to make PISA method more popular in assessing the MVA. Although not cited in the article, we a...

Panel Estimates from PISA

Universit a Di Pisa Testing Optimality for Quadratic 0-1 Problems Testing Optimality for Quadratic 0-1 Problems 1

The issue tackled is testing whether a given solution of a quadratic 0-1 problem is optimal. The paper presents an algorithm based on the necessary and sufficient optimality condition introduced by Hirriart-Urruty for general convex problems. A measure of the quality of the solution is provided. Computational results show the applicability of the method. The method is extended to constrained qu...

Università Di Pisa

—— An extreme low power voltage reference generator operating with a supply voltage ranging from 0.9 to 4 V has been implemented in AMS 0.35 μm CMOS process. The maximum supply current measured at the maximum supply voltage and at 80 °C is 70 nA. A temperature coefficient of 10 ppm/°C is achieved by means of a perfect suppression of the temperature dependence of the mobility, the compensation o...