In this letter, a general design criterion is proposed for optimizing non-uniform three-dimensional (3D) arrays to enhance near-field capacity in extremely large-scale MIMO (XL-MIMO) communications.

Blender (free) is pretty daunting to someone who’s never used 3D modeling or animation software. For me, using Blender 2.60a was somewhat like having to know exactly how my car works before I ...

But highlights for many 3D artists were a couple of demos of new features coming to Blender, a free and open-source program that's become on the of the best 3D modelling software options.