The New York Times

Investors Warn of ‘Rot in Private Equity’ as Funds Strike Circular Deals

Buyout firms have struggled to sell companies they own and have instead found a workaround to get cash back to clients: Selling the companies to themselves. By Maureen Farrell Maureen Farrell covers ...
Nature

How Google is supporting the circular economy

For the vast majority of Earth’s existence, our planet functioned as the quintessential circular system. The Sun’s energy nourished trees into life, and once they fell, microorganisms broke them down ...
IEEE

Fast Sparse DFT Computation for Arbitrary Length by Circular Convolution

Abstract: Efficient computation of the Discrete Fourier Transform (DFT) for signals with structured frequency support remains a significant challenge in signal processing. The traditional Fast Fourier ...
IEEE

Joint Channel Estimation and Equalization Using Circular Convolution and DNN for ZP-OTFS

Abstract: To combat the Doppler shift caused by high mobility, orthogonal time frequency space (OTFS) systems have been proposed to convert the timevarying channel into a nearly time-invariant channel ...
Frontiers

Frequency-aligned loss and spectral filtering improve long-range influenza forecasting

1 Department of Rehabilitation, West China Hospital Sichuan University Jintang Hospital, Jintang First People's Hospital, Chengdu, China 2 Jilin Institute of Physical Education, Changchun, China ...