The present invention relates to optimized Fc variants, methods for their generation, Fc polypeptides comprising optimized Fc variants, and methods for using optimized Fc variants. Furthermore, a computerized network provides different parties at different locations with a mechanism to conduct cooperative activities concerning such a subject of common interest without exposing that subject to possible identity theft. The second electrode has a plurality of linear portions. A drive circuit is coupled to output a drive signal in response to the edge signal. The invention is characterized in that a control device which is designed to detect a parameter of the first andor second storage cell, to identify a state of deterioration of the storage cell, and to change the threshold voltage of the first andor the second storage cell is provided.