A combined signal is received over a shared spectrum in a time slot in a time division duplex communication system using code division multiple access. The membrane and the reinforcing elements are then positioned under a press consisting of an upper air-filled chamber, the lower part thereof comprising a flexible element, and a lower water-filled chamber, the upper part thereof comprising a flexible element. Both or one of quartz and an acceptor level additive is mixed with a furnace wall of the incinerator main body. The displacement of the tool holder is controlled both along and perpendicular to the centerline. An index is built that includes the identified at least some documents and the identified subset of documents. A target is small enough to be positioned within the active area of a semiconductor device combined with appropriate measurement methods, which result in improved measurement accuracy.