SIG Sauer has partnered with GrabAGun to offer three specially finished Freedom Series handguns that pay homage to Charlie ...

Abstract: Heart rate variability (HRV) is an essential indicator of cardiovascular and nervous system function, with wide applications in health monitoring and disease management. Traditional ...

As part of a new family of guns, SAR USA offers its SAR9 SC Gen3, a small, subcompact, striker-fired design made for daily ...

When Allied bombers looked down on German cities, they saw a terrifying curtain of explosions—the notorious Flak. But the ...

Abstract: Millimeter-wave traffic radar, known for its advantages of all-day, all-weather, and long-distance monitoring, plays a critical role in traffic safety. However, the presence of multipath ...

Built to survive German 88 mm fire and armed with the powerful 17-pounder, the Centurion arrived too late for World War ...