A ring laser gyroscope is described which includes a laser cavity configured to provide an optical laser path for a pair of counter-propagating laser beams, an optical sensor configured to receive a portion of the energy from the counter-propagating laser beams, and a unit configured to receive outputs from the optical sensor. The NAR receives network messages and determines the network address of the appropriate network elements that is the destination of the message. One advantage of the composite sheet and related systems and methods is that users can create customized designs conveniently on their own home printer. 7 to 1, the cationic ratio of ) being from 0. When a pressure difference between the detected intake pressure and the atmospheric pressure during the catalyst temperature raising control is less than a predetermined pressure, the increased intake air amount and the retard amount of the ignition timing is gradually decreased. This circuit includes at least one light emitting diode positioned near the opening in the housing member, and a switch interposed between the capacitor and the output circuit.