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, ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Gordon Scott has been an active investor and ...

Main goal of this library is to make images viewing process as smooth as possible and to make it easier for developers to integrate it into their apps. Licensed under ...

A thriving manufacturing sector is vital to the nation’s economic health and global security, yet few companies possess the research and development (R&D) capacity essential to staying competitive.