Abstract: Advances in 4-D ultrasound imaging open new perspectives in biomedical research by reducing the long-standing challenge of operator dependency. Extensive research efforts are focused on ...

ROME — The US Navy is cancelling its Constellation frigate program following months of cost overruns and delays but plans to keep two vessels that are already being built in Wisconsin. “We’re ...

Abstract: Compared to conventional 3D radar systems, 4D radar systems require higher angular resolution in both azimuth and elevation. Besides, sparse arrays offer several advantages, including ...