repetitively computing the present rate of change of {TAIL ~ the weight} of {HEAD ~ the utensil contents} and generating a signal representative of the present rate 
repetitively computing the present rate of change of { TAIL ~ the weight } of { HEAD ~ the utensil contents } and generating a signal representative of the present rate
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH