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Lib Dem leader Ed Davey on why the trolls are wrong about the Trafalgar Square Christmas Tree: Starting in 1947, Oslo has gifted a Christmas tree every year as a token of thanks for Britain’s support ...

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, ...

Definitions of hypoxaemia, hypoxia, type 1 respiratory failure and hyperoxaemia Definition of hypercapnia and type 2 respiratory failure Definition of acidosis (respiratory acidosis and metabolic ...