Abstract: A registration system for classifying an object, comprising a sensor unit, an evaluation unit, a memory unit and a data-processing unit. The evaluation unit determines a structure data set or a temporal sequence of structure data sets of the object to be registered from a temporal progression of the radiation captured by the sensor assembly. The memory unit stores association rules, each associated with a set of situation parameters. The data-processing unit accesses the structure data set or a temporal sequence of structure data sets, the current situation parameter set, and the association rule associated with the current parameter set and to associate an object with an object class on the basis of the structure data set associated with the object or a temporal sequence of structure data sets by using an association rule associated with the current situation parameter set and received from the memory unit.

Abstract: There is described a circuit arrangement for the production of a quasi-electrostatic field for climatological and/or therapeutical applications which is variably set to external parameters. These external parameters may be the screening of the external natural electric field, which screening is given in dependence on the constructional design of the room to be air-conditioned, or the long-term or short-term fluctuations of the external natural electric field.