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We study the multiuser relay network and propose a distributed power-beamforming optimization algorithm to optimize the relay revenue and the utility of each user pair at the same time. The distributed manner of this algorithm is due to the pricing mechanism that provides the possibility of matching between user utility optimization and relay revenue(More)
The mechanisms of resistance to levofloxacin for Aeromonas hydrophila isolated from diseased fish and selected in vitro were examined in this study. Levofloxacin-resistant mutants were obtained by selection of A. hydrophila in vitro. The quinolone resistance-determining regions (QRDRs) of the gyrA and parC genes were sequenced in LevR strains and reverse(More)
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