PHARAO laser source flight model: design and performances.

In this paper, we describe the design and the main performances of the PHARAO laser source flight model. PHARAO is a laser cooled cesium clock specially designed for operation in space and the laser source is one of the main sub-systems. The flight model presented in this work is the first remote-controlled laser system designed for spaceborne cold atom manipulation.

Hysteresis prediction inside magnetic shields and application.

We have developed a simple model that is able to describe and predict hysteresis behavior inside Mumetal magnetic shields, when the shields are submitted to ultra-low frequency (<0.01 Hz) magnetic perturbations with amplitudes lower than 60 μT. This predictive model has been implemented in a software to perform an active compensation system.

The resistible growth of health care costs.

Rather than our routinely blamed ageing demography, pharmaceutical promotion and the medical business, not research, are responsible for our ever growing health bill. To keep essential health care affordable, only what has been proved necessary and cost effective should be financed by some kind of risk mutualisation system. Hedonistic care should be left to the free market.

To screen or not to screen.

All screenings lack efficiency because they rely too often on biaised and underpowered statistics. Healthcare business makes tremendous benefits out of well established and easy profit earning processes from screenings to treatments; therefore patients enlightened consent is under influence. In the wealthiest parts of the world, this field of public health sciences impulses studies with intense statistical analysis of tiny differences.