Back in high school, all the serious gearheads used to brag about two things: their drag strip tickets, and their dynamometer reports. The former showed how fast their muscle car could cover a quarter ...

Abstract: We propose a method for measuring the instantaneous velocity of moving objects using ultrasonic waves. By transmitting and receiving a single dual-chirp pulse, composed of an up-chirp and a ...

Abstract: Beam tracking is a promising technology in mmWave-enabled cellular-connected unmanned aerial vehicle (UAV) communications. However, conventional beam tracking schemes always incur a large ...

If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the ...

Astronomers from Keele University in the UK have utilized NASA's planet-hunting TESS telescope to investigate a totally-eclipsing binary known as UZ Draconis. Results of the new observations, ...

882 Great Deals out of 3857 listings starting at $895 439 Great Deals out of 2085 listings starting at $1,500 539 Great Deals out of 2469 listings starting at $895 136 Great Deals out of 819 listings ...

Holt is far from alone in his view that geopolitics are playing a key role in present-day supply chain operations. Many others—while using less starkly militaristic terms—are clear that the days of ...

When an object is falling, the two main forces acting on it are weight close weightA force that acts on mass, pulling it down, due to gravity. Weight is a force and forces are measured in newtons (N).

State Key Laboratory of Climate System Prediction and Risk Management, Center for Atmospheric Chemistry and Isotope Research, Nanjing University of Information Science & Technology, Nanjing 210044, ...