I do not know if it is true; I am simply conjecturing here.

We study helicopter risk by means of the risk influencing model, so the effect of changes is related directly to the RIFs in the model.

Please spell it out for me.

The most powerful office which came to be held by Mamluks was that of atabeg... The function of the atabeg was to act as the tutor and guardian of a young Seljukid prince, and where his ward was the holder of an appanage, the atabeg was in effect a regent with plenary powers.