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, ...

Creating a detailed Earth drawing becomes approachable and engaging through this step by step tutorial designed to guide artists with clarity and purpose. The process begins by establishing the basic ...

Blender is a free and open source 3D computer graphics software toolset. For rendering images Blender includes a path-tracer called Cycles and a real-time renderer named EEVEE. However both render ...

Earth’s orbit doesn’t move in a perfectly steady rhythm, and a new study argues that these slow, celestial cycles helped trigger ancient pulses of oxygen. Those pulses appeared roughly every two to ...