In the operational parameter group, the prime parameter is {TAIL ~ the operation cost} and {HEAD ~ the parameter set} is a set of operational efficiency parameters  
In the operational parameter group , the prime parameter is { TAIL ~ the operation cost } and { HEAD ~ the parameter set } is a set of operational efficiency parameters
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH