Abstract: The distributed acoustic sensing (DAS) system based on phase-sensitive optical time-domain reflectometry ($\Phi $ -OTDR) uses optical fiber as a medium to detect external vibration ...
Abstract: In the field of modern mobile communication, (Quadrature Phase Shift Keying) QPSK modulation technology is widely used, which has a great advantage that it can work normally in a limited ...
The tributes to Pinto da Costa, on the day marking one year since his death, multiplied throughout this Sunday. This afternoon, Vítor Baía also posted on social media a message dedicated to the man ...
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