Systems, methods, computer program product embodiments and combinations and sub-combinations thereof for data caching and cache synchronization are described herein. In plate-shaped sintered ceramic body 1, resistive heating element 2 is formed. Preferably, the molecules have bistable orientations. A comparator is used for comparing the derivative signal to a first reference signal to determine a zero crossing point representative of a change in direction of the detection device. The clamping assembly includes a gasket, a load ring, a clamping plate and a pre-load gap between the clamping plate and the casting mold and optionally includes a dimensional compensating ring.