In a computer system with a DBMS running thereon, management of the performance of a storage apparatus is executed by using a performance indicator provided by a user job so as to simplify the management of the performance. The pixel structure has single cell gap design, but a coupling capacitor and a modulating capacitor are properly connected to the reflection electrode so as to modulate the voltage of the reflection electrode. The fluid checking feature operates when the valve assembly is disassembled. Before receiving an indication of whether the mobile station is in DTR mode, the method includes retransmitting to the mobile station at least one of the first radio block and a radio block previously transmitted to the mobile station using a timeslot that is not monitored by the mobile station when the mobile station is in the DTR mode. The built-in sealant layer provides self-sealing properties to the pneumatic tire. The first active portion and the second active portion are deformed by applying the voltage to each of the first and second active portions.