Under favorable conditions, one can make do with {HEAD ~ a constant threshold} that can be varied by {TAIL ~ a factor} depending on the application 
Under favorable conditions , one can make do with { HEAD ~ a constant threshold } that can be varied by { TAIL ~ a factor } depending on the application
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH