U.S. President Donald Trump ended trade talks with Canada on Thursday night over what he called a "fake" Ontario government advertisement featuring the words of former U.S. president Ronald Reagan.

Abstract: Earth materials are heterogeneous across a range of spatial scales, but the resolvability of small structures is limited by sparse data coverage, noise, bandlimitedness, and other ...

Abstract: This paper proposes an unsourced random access (URA) scheme that can accommodate massive connectivity in the fifth generation (5G) and future 6G mobile networks. While most of conventional ...