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, ...

Spring Boot is one of the most popular and accessible web development frameworks in the world. Find out what it’s about, with ...

Trump signals backing of direct $1,500 payments for millions of Americans 2 huge earthquakes strike within days. Is it a warning? While Trump got the 'FIFA Peace Prize,' something truly great happened ...

Can you chip in? As an independent nonprofit, the Internet Archive is fighting for universal access to quality information. We build and maintain all our own systems, but we don’t charge for access, ...