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 ...

Abstract: In this article, a kind of electromagnetic coil catapult for life-saving projectile (LSP) is designed and developed for water rescue. We adopted the single-stage coil launcher scheme to save ...

The police and animal welfare charities have teamed up to tackle a disturbing crime involving teenagers killing or injuring waterfowl with powerful catapults and being fuelled by boasts on social ...