A remote control communicates via two-way communication with a controller for a bed facility to allow a user of the remote control to control a function of the bed facility. The base end of the portable electrical device is adapted to releasably mount onto the quick release base for power transfer to the electrical device and for data transfer between the primary coil and the secondary coil by inductive coupling between the primary and secondary coils. The hidden information is restored by extracting hidden image information from the read composite image information and control instruction is decoded from the restored hidden information and a controlled apparatus is controlled by executing the decoded control instruction. A through hole is formed in the interlayer insulating film, and the diameter of the through hole is greater than the diameter of the contact hole. The system of the biochemical reactions is then modeled by modeling the biochemical reactions of each region as a spatially homogenous stochastic Petri-net and by modeling the inter-region movement of the reactants based on the relationships as defined.