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Reducing disk energy consumption and improving disk performance in high-performance computer systems are increasingly pressing issues for reasons of disk economy and efficiency. To achieve these goals, we define the concept of Immediate Successor Relationship Amount (ISRA) to represent the successor relationship of data blocks, and propose an ISRA-based grouping algorithm for disk reorganization,...
In multipath environments, cyclic MUSIC is failed to detect all incident sources. In order to de-correlate the coherent signals, spatial smoothing (SS) and forward/backward SS techniques have been investigated to resolve this situation, however, all these algorithms will reduce the number of detectable signals and cause the deficiency of array aperture. In this paper, two new approaches called virtual...
A 4-sensor folded Sagnac sensor array with an active phase biasing scheme is presented. The overlapping of the signal and noise pulse is avoided through a time division multiplexing scheme and the noise pulses is eliminated almost completely. The scheme can address 16 sensors when the repeat frequency of input pulse is at 68.3 KHz. The alternative phase bias technique is demonstrated, which can provide...
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