A path calculating section obtains a path suitable for carrying out an automatic cache updating operation, a link prefetching operation, and a cache server cooperating operation, based on QoS path information that includes network path information and path load information obtained by a QoS path information obtaining section. In one embodiment, the multi-mode system and method is based on the addition of a local network monitoring system to a wide area satellite network monitoring system. , route reflector clients, in an autonomous system of a computer network. A dq-axisthree-phase conversion portion converts the command voltages vd and vq to command voltages of three phases. The protection layer is made of metal oxide, and has a hollow frame for covering or supporting edges of the metal mirror layer. Also described herein are methods for making and using the compositions.