Abstract: In this article, a globally stable adaptive control strategy for uncertain strict-feedback systems is proposed within predefined neural network (NN) approximation sets, despite the presence ...

Abstract: High-resolution and amplitude-preserved imaging is crucial for mapping impedance interfaces and identifying hydrocarbon reservoirs in the subsurface. Although elastic reverse-time migration ...

Cartilage is the body’s most stubborn tissue. Once it wears away, it’s usually gone for good. This biological dead-end is the engine behind osteoarthritis, a grueling condition that stiffens joints, ...

A small community in Denmark has moved away from traditional currency, relying instead on shared resources and cooperation to meet daily needs. Trump threatens tariffs, decertification on ...

An internal memo changed the standard from whether people are unlikely to show up for hearings to whether they could leave the scene. By Hamed Aleaziz and Charlie Savage Reporting from Washington Amid ...