To maximize the effective use of on-chip cache, a method and system for exclusive two-level caching in a chip-multiprocessor are provided. Each cell is a regular polygon and includes a plurality of adjoining sides, a base station located at a center of the cell, a plurality of directional antennas equipped at the base station, and a power adjustment unit electrically connected to the directional antennas. Accordingly, the wobble signal reproducing device and method can effectively reproduce a wobble signal in the CLV mode as well as in the CAV mode in which the spindle motor rotates at a constant speed. A noninvasive liquid level sensor maintains the water level in the boiler and the controller is provided to activate the boiler when water is required for the storage reservoir. The first and second reconstructed clock frequency signals are combined using dynamically adjusted weight factors and compared with the current reconstructed clock frequency signal to correct the latter which then synchronizes the clock of the local telecommunications network. The invention employs a deformable and re-formable elastic stretchsole joined as a planar sheet to the perimeter edge of the shoe upper and forms an elastic end closure for the shoe upper; and includes not less than one pre-positioned median cavity able to receive at least a part of the deformed elastic stretchsole layer and cushion the compression forces generated thereon by a person’s foot.