Abstract: Sparse arrays designed based on fourth-order difference co-array (DCA) can achieve significantly higher uniform degrees-of-freedom (uDOFs). However, most existing fourth-order sparse arrays ...

A money order enables you to send funds securely without a bank account or large sums of cash. If a money order is lost or stolen, there’s cause for concern. But if you act quickly, you can request a ...

Corrosion of reinforcing bars constitutes a significant factor contributing to cracking and spalling in reinforced concrete (RC) structures. To prolong the service life of RC structures, it is crucial ...

President Donald Trump on Tuesday signed an executive order restricting mail-in voting, the White House said. Trump has long sought to restrict mail-in voting following his loss in the 2020 election ...