Starbucks expects its loyalty program to remain a key growth driver for the rest of the year. The company projects at least a 5% increase in global comparable sales and earnings per share in the range ...

A novel frequency diverse array (FDA)-assisted secure transmission framework is proposed, which leverages additional frequency offsets to enhance physical layer security. Specifically, an FDA-assisted ...

Abstract: This letter presents a compact magneto-mechanical antenna array for extremely low-frequency (ELF, 3 Hz to 30 Hz) transmission. The array consists of four independently controlled units, each ...