Disclosed generators includes one or more transducers that use electroactive polymer films to convert mechanical energy to electrical energy. In one embodiment the waveguiding channel is planar and is sandwiched on two opposing sides by the periodic index media. If a roof exhaust is desired, a vent assembly is provided that contains a flap that automatically closes when the exhaust flow terminates, but opens when venting is underway. Communication links interconnect the processors with the hub for transmitting the processed information between the processors and the hub. In a fifth step, the removed instrument is reinstated into the universe. The peer IDs on this list instruct those neighbor routers to \u201cgo away\u201d so that their adjacencies can be destroyed.