Telecommunication equipment includes a TDM interface operable to receive STS-n data, and a packet interface operable to receive packetcell data and filling a STS-MC payload with the packetcell data. Each trace represents a sequence of logical instructions within the segment of code that can be executed in a corresponding operand stack. The client-side local assistant system, which is download installed on a customer’s computer, implements an automated client-side system that is fully data driven. A query certainty vector is generated from the intermediate representation. A current control computing means calculates a corrected current control signal by multiplying a current control signal of the electric motor computed on the basis of a steered condition of a vehicle by the output correction coefficient, and outputs a drive control signal based on the corrected current control sign al to a motor driving means. The device may include a bifacial solar cell comprising a partially-transparent first surface and a partially-transparent second surface opposite the first surface, and an optical element comprising a first partially-transparent dielectric portion in contact with the first surface and the second surface.