A single Powerball ticket sold in Arkansas matched all numbers to win the $251 million jackpot. Here's what winners need to know about claiming the prize. WSJ opinion: The Democrats’ instant no Nancy ...

Abstract: Self-sustainable RIS can harvest energy to maintain its operation by adaptively adjusting its reflection coefficient matrix, which brings convenience in deployment and maintenance. In this ...

Abstract: Non-orthogonal multiple access (NOMA) offers a promising solution to enhance spectral efficiency and support massive connectivity in future wireless systems. However, most NOMA research ...

There was an error while loading. Please reload this page. feat: add learn tracker with learnwrite/learnread tools Add per-session learning state tracker that records ...

North Korean dictator expresses ‘fond memories’ of US president but insists his regime will never give up its weapons ...