A lock that anyone can close but only one person can open sounds impossible, yet it follows directly from Euler's phi ...

Abstract: In order to suppress the swing of slung load during the flight of the quadrotor unmanned aerial vehicle (UAV), a new double closed-loop nonlinear control method Newton–Euler is proposed ...

Abstract: Adaptive traffic signal control plays a crucial role in enhancing the traffic situation in urban cities. Recently, reinforcement learning-based methods have demonstrated remarkable ...

Tim Allen revealed why a possible “Home Improvement” reboot hasn’t come to fruition. “They keep talking about how it could move forward, but they get stuck [because] there are some personality ...

Think about placing dots on a flat surface. You want as many pairs as possible to be separated by the same distance. For any amount of dots, what is the greatest possible number of pairs that can be ...

Artificial intelligence is mastering the kinds of projects that have long helped to build the careers of young mathematicians. What does that mean for their future? Credit...Illustrations by Yoshi ...

For new discoveries, everyday mysteries, and the science behind the headlines, follow NPR's ShortWave podcast . Over a century ago, the German psychologist Wolfgang Köhler conducted what became a ...