Abstract: This paper proposes and demonstrates an arbitrarily tunable multi-frequency pulse modulation scheme based on an active fiber loop, which effectively suppresses the interference fading effect ...

According to NASA's announcement on February 10, 2026, NASA's Nancy Grace Roman Space Telescope will perform the most extensive universe survey ever planned by mapping hundreds of millions of galaxies ...

The House passed a resolution introduced by Rep. Gregory Meeks, D-N.Y., to overturn President Donald Trump's tariffs on Canada. On Tuesday, three House Republicans voted with Democrats to defeat a ...

Today, Microsoft is releasing the new Cyber Pulse report to provide leaders with straightforward, practical insights and guidance on new cybersecurity risks. One of today’s most pressing concerns is ...

Abstract: Piezoelectric film sensors can be used to measure pulse wave, but motion artifacts often contaminate the signal, leading to measurement failures. This study proposes a method for estimating ...

We analyze the Apple Watch from a cardiology and scientific perspective. The device uses optical photoplethysmography sensors to measure pulse wave patterns. Irregular rhythms can suggest conditions ...

The Pentagon is officially ditching height and weight tables in favor of using a waist-to-height ratio to estimate troops’ body fat, according to an official memo released on Monday. And to pass, a ...

In a rebuke to the president, the Senate narrowly agreed to bring up a War Powers Act resolution for a vote next week. The measure would require Mr. Trump to seek congressional authorization for ...

A handful of Republicans joined Democrats to allow the measure to move forward, reflecting concerns in both parties about the administration’s strategy. By Robert Jimison and Megan Mineiro Reporting ...

“In this image, I’m collecting faecal samples from Adélie penguins (Pygoscelis adeliae) on Horseshoe Island, off the Antarctic Peninsula at about 68° S. As an analytical chemist, my research focuses ...