With the rapid development of the Internet era, the demand for data traffic has exploded, and
this dramatic growth has brought higher requirements for spectrum resources. Unlicensed …

Integrating hybrid active-passive communications into cognitive radio can achieve a
spectrum-and energy-efficiency information transmission, while the resource allocation has …

abstract Disease and pest are the main factors causing grape yield reduction. Correct and
timely identification of these symptoms are necessary for the vineyard. However, the …