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, ...

Shell plc is an Anglo-Dutch multinational oil and gas company. The firm was created by the merger of Royal Dutch Petroleum and UK-based Shell Transport & Trading. It is the seventh-largest company in ...

The Shell logo, or "Pecten," is one of the world's most recognised symbols. But it wasn't born that way. It was forged through a century of ruthless simplification. Forget "timeless" design—the real ...

Royal Dutch Shell PLC is an integrated oil and gas company. The company engages in exploration, production, and refining of oil around the world. It supplies fuel and other chemicals to various ...