HackerRank is a tech company that focuses on competitive programming challenges for both consumers and businesses, where developers compete by trying to program according to provided specifications.

New tariff rules bring 'maximum chaos' as surprise charges hit consumers I Watched Globalization Fail. I’m Worried About What Comes Next. The US added 911,000 fewer jobs last year than we originally ...

Abstract: Sparse linear arrays serve as the fundamental basis for sparse signal processing and have demonstrated remarkable direction-of-arrival (DOA) estimation performance. Due to the merit of ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

Abstract: The mutual coupling (MC) effect between sensors is a critical factor in sparse array (SA) design, substantially affecting direction-of-arrival (DOA) estimation performance. In this paper, we ...

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