Abstract: Intelligent reflecting surface (IRS) is an enabling technology to engineer the radio signal propagation in wireless networks. By smartly tuning the signal reflection via a large number of ...
Long considered elusive and endangered, the Sumatran rhino is now estimated to have fewer than 50 individuals left in Indonesia’s fragmented forests. In 1984, conservationists captured 40 animals for ...
This story appears in the October 2016 issue of National Geographic magazine. It was a five-hour drive from South Africa’s Kruger National Park, home of the world’s largest wild rhinoceros population, ...
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