Abstract: I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2021. This issue includes 23 papers covering different aspects of communication networks. In particular, ...
What is spinal cord compression? Spinal cord compression is caused by any condition that puts pressure on your spinal cord. Your spinal cord is the bundle of nerves that carries messages back and ...
Abstract: Public policies and private initiatives share the will to explore outer space and to monitor the Earth from space sensors. Recent years have seen an increased number of space missions, while ...
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