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, ...

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This article presents a visual puzzle designed to trick the eye into missing hidden digits. Most people overlook a tiny '9' within the central question mark and fail to count the '9's in the status ...

Talking about the features in the Mahindra XEV 9S, Features-wise, the 9S gets triple 12.3-inch displays - a central touchscreen, a fully digital instrument cluster and a dedicated screen for the front ...