Abstract: Dynamic power system models are instrumental in real-time stability, monitoring, and control. Such models are traditionally posed as systems of nonlinear differential algebraic equations ...

Earth system box models are essential tools for reconstructing long-term climatic and environmental evolution and uncovering ...

Duke University engineers are using artificial intelligence to do something scientists have chased for centuries; turn messy, real-world motion into simple rules you can write down. The work comes ...

Yosra Barkaoui’s doctoral dissertation in mathematics at the University of Vaasa, Finland, has successfully generalised a fundamental theorem that has been limited to the bounded case. The research ...

When Donald Trump stood on the White House lawn in April 2025 holding a large, laminated poster announcing the first round of trade tariffs to be imposed on different countries, the Trade Policy ...

Abstract: A nonlinear equation system often has multiple roots, while finding all roots simultaneously in one run remains a challenging work in numerical optimization. Although many methods have been ...

HUKOU, Taiwan — Taiwan does not want China’s “one country, two systems” and must uphold its freedom and democracy, and resolve to defend itself, President Lai Ching-te said Friday, rejecting Beijing’s ...

Taiwan will defend its freedom and democracy, president says China making a renewed push for Taiwan to accept its autonomy offer U.S. expresses concerns about Chinese activity around Taiwan China ...

The Atlantic is suddenly buzzing with tropical activity. Hurricane Gabrielle is a strong Category 3 storm east of Bermuda, and two more potential tropical systems — one nearing the Caribbean and ...

A full appeals court panel voted 7-4 to restore Cathy Harris and Gwynne Wilcox to their positions, setting up an expected Supreme Court finale. By Zach Montague Reporting from Washington A federal ...