Results 31 to 40 of about 1,334,101 (280)

Fourier and Inverse Fourier Transform Model for Delayed Self-interferometry System

IEEE Photonics Journal, 2020
Understanding the effects of laser phase and frequency noise on laser interferometry is significant for evaluating the system performance. To precisely study the performance limit caused by laser frequency noise, here we propose and demonstrate a ...
Ling Zhang, Weilin Xie, Yuxiang Feng, Zhangweiyi Liu, Haijun Zhou, Yinxia Meng, Yuanshuo Bai, Wei Wei, Yi Dong   +8 more
doaj   +1 more source

New Algorithm for Real-Valued Fourier Transform

Tikrit Journal of Engineering Sciences, 2023
This paper presents a direct algorithm for fast real discrete Fourier transform (RDFT) computing, using the discrete Fourier transform (DFT) conjugate symmetric property to reduce redundancies.
Sukaina K. Salih, Mounir T. Hamood
doaj   +1 more source

Large-Scale Discrete Fourier Transform on TPUs

IEEE Access, 2021
In this work, we present two parallel algorithms for the large-scale discrete Fourier transform (DFT) on Tensor Processing Unit (TPU) clusters. The two parallel algorithms are associated with two DFT formulations: one formulation, denoted as KDFT, is ...
Tianjian Lu, Yi-Fan Chen, Blake Hechtman, Tao Wang, John Anderson   +4 more
doaj   +1 more source

A hyperkähler Fourier transform

Differential Geometry and its Applications, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
BARTOCCI, CLAUDIO, BRUZZO U., HERNANDEZ RUIPEREZ D.   +2 more
openaire   +3 more sources

The Chromatic Fourier Transform

Forum of Mathematics, Pi
We develop a general theory of higher semiadditive Fourier transforms that includes both the classical discrete Fourier transform for finite abelian groups at height $n=0$ , as well as a certain duality for the $E_n$ -(co)homology of $\pi
Tobias Barthel, Shachar Carmeli, Tomer M. Schlank, Lior Yanovski   +3 more
doaj   +1 more source

Short-time Fourier transform laser Doppler holography [PDF]

Journal of the European Optical Society-Rapid Publications, 2013
We report a demonstration of laser Doppler holography at a sustained acquisition rate of 250 Hz on a 1 Megapixel complementary metal-oxide-semiconductor (CMOS) sensor array and image display at 10 Hz frame rate.
Samson B., Atlan M.
doaj   +1 more source

Discrete Quadratic-Phase Fourier Transform: Theory and Convolution Structures

Entropy, 2022
The discrete Fourier transform is considered as one of the most powerful tools in digital signal processing, which enable us to find the spectrum of finite-duration signals.
Hari M. Srivastava, Waseem Z. Lone, Firdous A. Shah, Ahmed I. Zayed   +3 more
doaj   +1 more source

A Study on the Number of Neutrosophic Crisp Topological Spaces in a Finite Set [PDF]

Neutrosophic Sets and Systems
Fourier transform is one of the oldest and well-known technique in the field of mathematics and engineering mathematical works. As the concept of uncertainty has been introduced in the mathematics, most of the works gravitate towards the use Neutrosophic
Jili Basumatary, Bhimraj Basumatary
doaj   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

FEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav, Bogdan I. Florea, Sebastian Geibel   +2 more
wiley   +1 more source

Quantum Fourier Transform Has Small Entanglement

PRX Quantum, 2023
The quantum Fourier transform (QFT) is a key component of many important quantum algorithms, most famously being the essential ingredient in Shor’s algorithm for factoring products of primes.
Jielun Chen (陈捷伦), E.M. Stoudenmire, Steven R. White   +2 more
doaj   +1 more source