Results 61 to 70 of about 3,451,835 (375)

Short-time Fourier transform laser Doppler holography [PDF]

open access: yesJournal 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

Steerable Discrete Fourier Transform

open access: yes, 2017
Directional transforms have recently raised a lot of interest thanks to their numerous applications in signal compression and analysis. In this letter, we introduce a generalization of the discrete Fourier transform, called steerable DFT (SDFT).
Fracastoro, Giulia, Magli, Enrico
core   +1 more source

The Chromatic Fourier Transform

open access: yesForum 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   +3 more
doaj   +1 more source

Quantum Fourier Transform Has Small Entanglement

open access: yesPRX 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)   +2 more
doaj   +1 more source

Fourier-Mukai transforms [PDF]

open access: yes, 2007
Suggestions by many people incorporated (see the acknowledgement at the end of the introduction)
Hille, Lutz, Bergh, Michel Van den
openaire   +2 more sources

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

open access: yesNeutrosophic 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

Holomorphic harmonic analysis on complex reductive groups

open access: yes, 2007
We define the holomorphic Fourier transform of holomorphic functions on complex reductive groups, prove some properties like the Fourier inversion formula, and give some applications.
An, Jinpeng, Qian, Min, Wang, Zhengdong
core   +1 more source

Hands‐on protocol for preparing water‐soluble fractions from agri‐food samples for NMR‐based metabolomics analysis

open access: yesFEBS Open Bio, EarlyView.
This research protocol outlines a workflow for nuclear magnetic resonance (NMR)‐based metabolomics in the agri‐food sector. Using two case studies—strawberry leaves (solid matrix) and wine (liquid matrix)—it details the procedures for sample preparation, data acquisition, and processing.
Andrea Fernández‐Veloso   +4 more
wiley   +1 more source

Phase-controlled Fourier-transform spectroscopy

open access: yesNature Communications, 2018
Fourier transform spectrometers are generally limited to slow scanning rates at high resolution. Here the authors demonstrate highly efficient Fourier transform spectroscopy using a dynamic phase-control technique that enables fast acquisition without ...
Kazuki Hashimoto, Takuro Ideguchi
doaj   +1 more source

Quantum Fourier transform revisited

open access: yesNumerical Linear Algebra with Applications, 2020
SummaryThe fast Fourier transform (FFT) is one of the most successful numerical algorithms of the 20th century and has found numerous applications in many branches of computational science and engineering. The FFT algorithm can be derived from a particular matrix decomposition of the discrete Fourier transform (DFT) matrix.
Daan Camps, Roel Van Beeumen, Chao Yang
openaire   +6 more sources

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