Abstract: Discrete Fourier transform (DFT), inverse DFT (IDFT), and circular convolution are important tools for analyzing and designing discrete signals and systems, and are widely used in various ...

Our research proves a conjecture from string theory asserting the vanishing of a specific convolution sum arising in the 4-graviton scattering amplitude in 10-dimensional type IIB string theory. The ...

We’re watching a new trend in semiconductor stocks concerning circular deals. Here’s why we think investors should be keeping an eye on it, though they shouldn’t be particularly worried at this point.

The nature of different antenna polarizations. Circular polarization and its properties. Where to apply linear and circular polarizations. How to measure and analyze circular polarization. When using ...

A windowed sinc function can implement a low-pass filter, and a two-dimensional convolutional filter can blur or sharpen images. In part 3 of this series, we introduced a low-pass filter based on the ...

The previous generation, the Circular Ring Slim, didn’t impress us too much in our review testing process. But the company has been hard at work righting some of those wrongs. It updated the Ring Slim ...

The Apple Watch Series 10 is my current wearable of choice. I use it to track all the health data Apple can squeeze into a smartphone and all the workouts I do as part of my marathon training. I've ...

Forbes contributors publish independent expert analyses and insights. Prakhar Khanna covers the consumer tech beat for Forbes. Buying a smart ring isn’t as seamless as purchasing a smartwatch. Ideally ...

Smart ring maker Circular announced its next-gen Ring 2 with ECG (electrocardiogram) functionality and AFib (atrial fibrillation) detection at CES 2025 Unveiled on Sunday in Las Vegas. The wearable is ...