A multi-chips stacked package mainly comprises a substrate, a first lower chip, a second lower chip, an upper chip and a carrier. The thermal barrier may be formed by a thermal choke plate assembly positioned between a hot side and a cold side of the blower to dissipate heat conducted from the hot side. The electric current of electrons undergoing the above-described procedure is amplified by an external amplification circuit. The storage operation is scheduled in accordance with the congestion control parameter at a selected physical storage device to which the portion of the storage object is mapped. Also, the system comprises an amplification network which comprises a plurality of amplifier systems, with one or more separate amplifiers in each amplifier system for separately amplifying each of the separate audio signals. In the improved maneuvering system, the autopilot is used for controlling the direction of a waterjet boat during very low speed maneuvers, such as docking.