Requests to send data from a first host within a network of hosts are monitored against a record of destination hosts that have been sent data in accordance with a predetermined policy. By using, as a calculating formula, a formula well approximating a portion of a curve representing a state of chemical mechanical polishing on a side showing a target polishing amount, the polishing rate and the polishing time can be set with high accuracy according to a state of chemical mechanical polishing for actually polishing a product wafer. The display infrastructure uses a template page identifier obtained from a resolution component. The bearing shell can be essentially freely positioned in the joint housing in an axial direction of the ball pin. The mapping specification may also specify an external mapping specification for a subset of the mapping operations. Each of the control sound signal generating units generates control sound signal based on the error sound detected by a corresponding error microphone of the plurality of error microphones.