actuator means associated with the member, for applying stress to the member in {HEAD ~ such a manner} as to produce {TAIL ~ a strain} opposite in sense to that induced by the external stress forces acting on the structure 
actuator means associated with the member , for applying stress to the member in { HEAD ~ such a manner } as to produce { TAIL ~ a strain } opposite in sense to that induced by the external stress forces acting on the structure
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH