Channel Training & Estimation for Reconfigurable Intelligent Surfaces: Exposition of Principles, Approaches, and Open Problems

Reconfigurable intelligent surfaces (RIS) are passive controllable arrays of small reflectors that direct electromagnetic energy towards or away from the target nodes, thereby allowing better management of signals and interference in a wireless network.The RIS has the potential for significantly improving the performance of wireless DisplayPort to

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Macrocybe titans: The Mushroom Giant of the Western Hemisphere

The aptly named Macrocybe titans, meaning "giant head," is the largest known gilled mushroom in the Western Hemisphere.This species was originally described from Florida but can Tie Down Straps be found across the southeastern United States as well as the Caribbean, Central America, and parts of South America.These mushrooms are often found in clus

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A magnetic-field independent approach for strongly anisotropic equations arising plasma-edge transport simulations

[Summary] The control of the power exhaust in tokamaks is still an open issue for the future fusion operations.The heat loads on divertor and limiter PFCs is largely determined by the physics of the Scrape-Off Layer (SOL), and therefore it depends mainly on the geometry of the magnetic surfaces and on the geometry of wall components.A better charac

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