Yongfeng Wu

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The authors first present a Rosenthal inequality for sequence of extended negatively dependent (END) random variables. By means of the Rosenthal inequality, the authors obtain some complete moment convergence and mean convergence results for arrays of rowwise END random variables. The results in this paper extend and improve the corresponding theorems by Hu(More)
The paper proposed a new method for the detection of QPSK carrier signal that based on double duffing oscillator to solve the problems as high attenuation and strong noise interference in the QPSK carrier communication of low voltage power line. This method has making use of the different phase of QPSK carrier signal to stimulate the double duffing(More)
— The paper selects 10 kinds of indexes to reflect ecological environment background condition and build the multi-subject spatial database by using ground meteorological data, remote sensing data and DEM. Then methods are illuminated in detail about evaluating eco-environment background condition and analyzing change. Eco-environment background condition(More)
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