Abstract: This letter proposes a novel three-dimensional geometry-based stochastic model (GBSM) for multiple-input-multiple-output (MIMO) channels in unmanned aerial vehicle (UAV) air-to-ground (A2G) ...

Now, scientists claim to have solved one important part of the mystery. Weighing between 12 and 80 tonnes, scientists have long wondered how the island's ancient civilisation could have moved the huge ...

Polygons play an essential role in 3D modeling, allowing the design of complex objects with great precision. By assembling simple geometric shapes, it becomes possible to create a variety of ...

Blind and low-vision programmers have long been locked out of three-dimensional modeling software, which depends on sighted users dragging, rotating and inspecting shapes on screen. Now, a ...

Researchers confirmed that Rapa Nui’s moai statues could “walk” upright using a rocking motion, aided by rope and just a few people. Experiments with replicas and 3D models revealed design features ...

Abstract: With the continuous development of science and technology, drone technology has been widely used in various fields. This paper mainly discusses the application of unmanned aerial vehicle ...