The present disclosure relates to a method for avoiding deadends in a constrained simulation. The SCP broadcasts data pertaining to the incoming telephone call and a request for a destination to individual ones of the PCVDUs via the WAN, and the personal routers negotiate a destination based on individual routing rules and the data pertaining to the call. The conveyance plate has a plurality of platen openings formed therein at positions corresponding to the belt openings in the width direction, and is disposed on a back surface side of the conveyance belt. Thus, the methods and compositions of the invention may be used to produce ligands that are designed to specifically kill or inhibit the growth of any target organism. After amplifying the preferred pilot signal, the apparatus transmits the boosted pilot signal from an antenna within the geographical area. By the cover, it can prevent foreign substances from entering the inside of the air vent and provide a favorable appearance.