Abstract: Ultrasound (US)-guided needle insertion is widely employed in percutaneous interventions. However, providing feedback on the needle tip position via US imaging presents challenges due to ...

The North American Aerospace Defense Command defends North American airspace 24 hours a day, 365 days a year. But on Christmas Eve, it tackles perhaps its most important mission: tracking Santa Claus ...

NORAD (North American Aerospace Defense Command) had the first ever Santa tracker in 1955. While it used to be just a boring animation of Santa’s sleigh and reindeer flying across a map, NORAD has ...

Having already made his list – and having checked it twice – Santa Claus is coming. You can track his progress on Christmas Eve. Since then, NORAD has upgraded ...

We all know Santa Claus is coming to town. What we don't know is where the jolly old St. Nick is. Don't worry, two of the country's most powerful organizations are here to help – the military and ...

The North American Aerospace Defense Command (NORAD) has been tracking Santa's Christmas journey since 1955. NORAD's official Santa tracker goes live on Christmas Eve, allowing families to follow his ...

While the world prepares to unwrap gifts and sing carols this week, Santa is gearing up for his most demanding 24 hours of the year, checking his list and readying his sleigh for the long night ahead.

ABSTRACT: This paper investigates the computational solution to the problem of projectile motion under a significant linear drag effect. The drag force acting on the particle within the medium of ...

We all know Santa Claus is coming to town. What we don't know is where the jolly old St. Nick is. Don't worry, two of the country's most powerful organizations are here to help – the military and ...

Getting your Trinity Audio player ready... By COLLEEN SLEVIN, Associated Press PETERSON SPACE FORCE BASE, Colo. (AP) — Sometimes kids drop the phone after hearing Santa won’t show up if they’re not ...