Results 241 to 250 of about 790,476 (361)

Direct FFT oversampling without zero-padding. [PDF]

Sci Rep
Donciu C, Temneanu MC, Serea E.
europepmc   +1 more source

A new Algorithm Based on Discrete Fourier Transform to Improve the Lifetime of Underwater Wireless Sensor Networks Communications [PDF]

Wafa Elmannai, Khaled Elleithy
openalex   +1 more source

Non‐Uniform Space‐Time‐Coding Modulation for Low‐Complexity Diagnostics of Reconfigurable Intelligent Surfaces

Advanced Electronic Materials, EarlyView.
A diagnostic method for reconfigurable intelligent surfaces (RIS) based on non‐uniform space‐time‐coding modulation is presented. Fault localization is achieved via amplitude‐only spectral measurements, eliminating the need for complex signal processing. A one‐to‐one mapping between harmonic components and RIS elements enables accurate detection.
Xiao Qing Chen, Lei Zhang, Yi Ning Zheng, Bing Bing Zhu, Marco Rossi, Giuseppe Castaldi, Shuo Liu, Vincenzo Galdi, Tie Jun Cui   +8 more
wiley   +1 more source

Determining Area Affected by Corona in Lung Computed Tomography Images by Three-phase Level Set and Shearlet Transform. [PDF]

J Med Signals Sens
Aghazadeh N, Noras P, Moghaddasighamchi S.   +2 more
europepmc   +1 more source

Physics‐Informed Deep Learning Method for Real‐Time Multi‐Harmonic Beamforming Based on Space‐Time‐Coding Metasurface

Advanced Electronic Materials, EarlyView.
This work proposed an unsupervised physics‐informed deep learning method of generating space‐time‐coding metasurface coding patterns for arbitrary single‐ and dual‐beam requirements at each harmonic. This method is specially designed for the coding pattern design task of multi‐bit scenario, and it can effectively handle the optimization trouble caused ...
Jiang Han Bao, Che Liu, Yi Ning Zheng, Lei Zhang, Wen Ming Yu, Lianlin Li, Tie Jun Cui   +6 more
wiley   +1 more source

Some discrete Fourier transform pairs associated with the Lipschitz–Lerch Zeta function

, 2009
Djurdje Cvijović, H. M. Srivastava
openalex   +2 more sources

Advancing Energy Materials by In Situ Atomic Scale Methods

Advanced Energy Materials, Volume 15, Issue 11, March 18, 2025.
Progress in in situ atomic scale methods leads to an improved understanding of new and advanced energy materials, where a local understanding of complex, inhomogeneous systems or interfaces down to the atomic scale and quantum level is required. Topics from photovoltaics, dissipation losses, phase transitions, and chemical energy conversion are ...
Christian Jooss, Michael Seibt, Martin Wenderoth, Oliver Bünermann, Ole Bunjes, Till Domröse, Christian Eckel, Francesca Falorsi, Christoph Flathmann, Monica Kolek Martinez de Azagra, Matthias Krüger, Jonas Lindner, Tobias Meyer, Claus Ropers, Ulrich Ross, Kai Rossnagel, Sreeju Sreekantan Nair Lalithambika, Simone Techert, Georg A. Traeger, Cynthia Volkert, R. Thomas Weitz, Alec M. Wodtke   +21 more
wiley   +1 more source

Efficient Deep Wavelet Gaussian Markov Dempster-Shafer Network-Based Spectrum Sensing at Very Low SNR in Cognitive Radio Networks. [PDF]

Sensors (Basel)
Jatti S, Tyagi A.
europepmc   +1 more source

Stability of Organic Photovoltaics: From Root Causes to Advanced Analytical Techniques

Advanced Energy Materials, EarlyView.
This review explains the causes and mechanisms of degradation in organic photovoltaics (OPVs). It explores how various factors, including heat, light, oxygen, and inherent material properties, influence OPV stability. The study categorizes degradation pathways and analyzes their impact on device performance, providing insights into the fundamental ...
Yelim Choi, Dohyun Kim, Seung Un Ryu, Hangyeol Kim, Sungryong Kim, Minjun Kim, Taiho Park   +6 more
wiley   +1 more source

FCP-Former: Enhancing Long-Term Multivariate Time Series Forecasting with Frequency Compensation. [PDF]

Sensors (Basel)
Li M, Yang M, Chen S, Li H, Xing G, Li S.   +5 more
europepmc   +1 more source