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, ...

Within each content area, there are one or more tutorials. Each tutorial consists of lessons. Each lesson should be a page detailing the concept being taught, along with sample code. Lesson and page ...

This project was created to enable embedding XCSoar (or any other Windows application) inside the Condor 2 Soaring Simulator's PDA for use in VR. While there are other methods, like a Virtual Desktop ...