Can a Hydroelectric Dam Really Make the Days Longer?

How many times have you said, “I wish the days were longer”? Well, NASA scientists say the construction of China’s Three ...
Nature

A Chinese AI model taught itself basic physics — what discoveries could it make?

A tool called AI-Newton can derive scientific laws from raw data, but is some way from developing human-like reasoning.
Scientific Research Publishing

A Hysteretic Description of Non-Kepler’s Orbit in Two-Body Celestial Mechanics ()

This paper describes the eccentricity, amplitude, phase shift, angular momentum, polarization, radial path, and orbital ...
IEEE

Velocity-Free Attitude Control for Flexible Spacecraft With Global Finite-Time Convergence

Abstract: In this brief, a global finite-time attitude control algorithm is proposed for flexible spacecraft without angular velocity measurement. First, a global finite-time observer is designed to ...
IEEE

Fast mmWave Beam Tracking with Angular Velocity Estimation for Cellular-Connected UAVs

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 ...
Frontiers

Load-dependent increase in lumbar kyphosis is associated with posterior pelvic tilt during deadlift

1 Graduate School of Health and Sport Sciences, Chukyo University, Aichi, Japan 2 School of Health and Sport Sciences, Chukyo University, Aichi, Japan Introduction: Although numerous previous studies ...