A drive mechanism comprises a transmission as well as an electromotorgenerator. The preservative reagent comprises polyethylene glycol, ethanol, paraformaldehyde, and ethylenediaminetetraacetic acid, and optionally pH stabilizing reagents. The method comprises receiving a digital image of at least a portion of the test object including a target area where the expected encoded image would be applied if the test object is an authentic object. The insulating part is disposed between the anode part and the cathode part. The Bayes network is then modified so that similar future alerts or alert groups will be assigned a relevance score that more closely matches the score given by the network manager.