A distributed generation system that can suppress a voltage fluctuation caused by a distributed generation by an apparatus of a small power capacity in the distributed generation itself and stabilize the power system voltage without inserting interharmonic voltage or current into the power system and without interference among a plurality of distributed generations. The functional channels have a functionality that is different from one another with respect to a gas that can pass through. The radiation-sensitive medium is aqueous-ineluable when coated and dried, and becomes hydrophobic under the action of heat. The closure system provides for a higher closing velocity of the closure member than conventional closure systems. The use of schematic drawings as a source of images allows a quick test of the method for a particular classification problem. The system also may include one or more tension members attached diagonally between adjacent compression members to keep the system in the deployed configuration.