A bone prosthesis device is comprised of an upper and lower abutment surfaces and an intervening malleable member. A vehicle characteristic is adjusted in response to the added mass. The method is to also include transitioning at least one memory module resident on the computing platform to one of a plurality of power states based at least in part on memory power utilization predicted via the implementation of the at least one statistical prediction model. In an embodiment, it uses a hybrid approach consisting of the commitersignerbidder creating a certificate for the public key of an efficient k-time signature scheme using a regular signature key.