Qui est Marie-hélène Dini ?

Qui est Marie-hélène Dini ?

Marie-Hélène DINI est une entrepreneuse humaniste et audacieuse, passionnée par les métiers de l'accompagnement. Diplômée de l'Ecole Supérieure de Commerce et formée à la Faculté Libre de Développement et de Psychothérapie, elle a exercé pendant 15 ans en entreprise dans les services administratifs et financiers.

Comment devenir un coach ?

Pour devenir coach, on doit tout d'abord suivre une formation initiale en coaching professionnel. Après avoir décroché le diplôme nécessaire, le candidat doit renforce encore ses compétences et s'initie petit à petit à la pratique en contrat de stage, d'alternance ou d'apprentissage.

What is MHD in physics?

• The field of MHD was initiated by Hannes Alfvén[1], for which he received the Nobel Prizein Physics in 1970. The idea of MHD is that magnetic fields can inducecurrents in a moving conductive fluid, which create forces on the fluid, and also change the magnetic field itself.

What is the set of equations that describe MHD?

• The set of equations which describe MHD are a combination of the Navier-Stokes equationsof fluid dynamicsand Maxwell’s equationsof electromagnetism. These differential equationshave to be solved simultaneously, either analytically or numerically.

What is extended MHD?

• Extended MHD describes a class of phenomena in plasmas that are higher order than resistive MHD, but which can adequately be treated with a single fluid description. These include the effects of Hall physics, electron pressure gradients, finite Larmor Radii in the particle gyromotion, and electron inertia.

When to use resistive MHD instead of ideal MHD?

• When the fluid cannot be considered as completely conductive, but the other conditions for ideal MHD are satisfied, it is possible to use an extended model called resistive MHD. This includes an extra term in Ampere’s Lawwhich models the collisional resistivity.