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, ...

Aerospace Engineering is at the cutting edge of technology, understanding and applying scientific principles to the design, development and service of some of the most technologically advanced ...

Mechanical engineers utilize expertise in mathematics, science, and software to conceive and produce innovative, cost-optimized, and reliable technology. They spearhead the development of sustainable ...