Abstract: This article presents a high-performance frequency-domain chipless RFID reader with vector background subtraction capabilities, implemented in a software-defined radio (SDR) for the first ...

In the following example, we have a summation loop. One of the terms being contributed to the accumulator involves a subtraction. This "-" appears to force us to pick a fixed vectorization factor ...

Geographic atrophy (GA) is one of two kinds of advanced age-related macular degeneration (AMD). It’s an eye disease that damages cells in the central part of your retina called the macula. Late-stage ...

The Earth is awash in data about itself. Every day, satellites capture around 100 terabytes of imagery. But making sense of it isn’t always easy. Seemingly simple questions can be fiendishly complex ...

Today, companies around the world face increasing economic and business uncertainty thanks to the volatile geopolitical environment and the rise of AI. In challenging contexts like this, it’s tempting ...

Looking for the best educational YouTube channels for kids? Discover top picks that turn screen time into meaningful learning from maths and science to languages and culture. Although conventional ...

As National Geographic reimagines its iconic headquarters for the 21st century, here’s a look back at its history as a base for both Cold War spies and the Society’s own Explorers. The National ...

The hottest revival trend in travel for 2025? That would be “fun,” according to National Geographic editor-in-chief Nathan Lump, who spoke exclusively to CNN ahead of the Tuesday reveal of Best of the ...

Converting images into vector graphics or creating vector graphics is particularly useful if you need graphics for logos, illustrations, or print templates. While conventional image formats such as ...

Using Microsoft Excel to subtract numbers may take a few more steps than you're used to, but it can be done. In this guide, we'll show you four different ways to subtract in Excel: Within a cell, ...

Vector-borne diseases cause roughly 700,000 deaths worldwide every year. Vectors can carry different types of pathogens, including viruses and bacteria. Tropical and subtropical regions report large ...

More than 70 percent of Earth’s surface is covered by ocean. But more than 80 percent of that marine realm is unknown. A crew aboard one of the world’s most advanced research vessels is exploring some ...