Method for controlling a vehicular system based on the presence of an object in an environment around a vehicle with one goals being to prevent collisions between the vehicle and any objects. The material comprises a partially sintered ceramic material. The frame includes an top peripheral frame portion and finger grip openings at the underside of the trap frame. In that manner the debris barrier remains in position during the lifting to determine release from the liner before cementing. The irradiance system includes a measuring system and at least one energy source for directing radiation to the surface of the workpiece.