Abstract: Estimation of direction-of-arrival (DOA) is a fundamental problem in array signal processing. The uniform circular array (UCA) is a highly useful array geometry for DOA estimation, ...

Learn about the EU’s plan to shift to a circular economic model to make Europe cleaner and more competitive. Subscribe to this topic See all explainers on this topic The Earth’s resources are limited.

Abstract: To address the issue of iterative Fourier transform method (IFT) easily falling into local optima in thinned array synthesis, this communication proposes a two-stage alternating iterative ...

The hand-held circular saw has been with us for over 100 years. It's an essential part of a professional carpenter's toolkit and one of the must-buy power tools for first-time homeowners who intend to ...

Skeptics of a recent investment spree involving OpenAI and others say deals raise questions about the robustness of the artificial intelligence boom. By Andrew Ross Sorkin Bernhard Warner Sarah ...

Students call it hypocritical. A senior at Northeastern University demanded her tuition back. But instructors say generative A.I. tools make them better at their jobs. By Kashmir Hill In February, ...

Researchers have identified a never-before-seen mechanism that enables HIV-1 to evade the body's natural defenses and use it to support its survival and replication. The 'loophole' is a biological ...

We may receive a commission on purchases made from links. Graduating from a manual saw to power tools can be a big step on your DIY journey, but if you don't know how to safely use a circular saw, it ...

Rana Hajirasouli is a Ph.D. Researcher at the University of Cambridge and Founder of The Surpluss (Certified B Corp). The circular economy has long been heralded as an important pathway to sustainable ...

What is the circular economy? The circular economy is a system where products and materials are shared, leased, reused, repaired, refurbished and recycled instead of being thrown away. This gives them ...

French tech brand Circular is stepping up its smart ring game with the unveiling of its Circular Ring 2, the brand announced on Sunday at the Consumer Electronics Show in Las Vegas. Also: CES 2025 ...