I purchased one of each of these cheap sensors recently from aliexpress for testing purposes. Compared with the ubiquitous HC-SR04 (*), I liked the idea of having a combined emitter/receiver, i.e.

Copyright (c) 2019 Arduino SA. All rights reserved. This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General ...

Abstract: Intelligent reflecting surface (IRS) is an enabling technology to engineer the radio signal propagation in wireless networks. By smartly tuning the signal reflection via a large number of ...

The training material on this webpage is available for download. The purpose of the material is to train the trainers, who are hospital personnel e.g. medical physicists/radiation protection officers, ...

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