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The morphing of geographical features by Fourier transformation. [PDF]

open access: yesPLoS ONE, 2018
This paper presents a morphing model of vector geographical data based on Fourier transformation. This model involves three main steps. They are conversion from vector data to Fourier series, generation of intermediate function by combination of the two ...
Jingzhong Li   +3 more
doaj   +2 more sources

A practical implementation of de-Pake-ing via weighted Fourier transformation [PDF]

open access: yesPeerJ, 2013
We provide an NMRPipe macro to meet an increasing need in membrane biophysics for facile de-Pake-ing of axially symmetric deuterium, and to an extent phosphorous, static lineshapes.
Marc-Antoine Sani   +4 more
doaj   +3 more sources

Application of two-bit dithered Discrete Fourier basis functions in electricity measurement [PDF]

open access: yesJournal on Processing and Energy in Agriculture, 2021
The paper defines an algorithm for generating two-bit dithered discrete Fourier basis functions (DDFBF) used in a Stochastic Digital Discrete Fourier Transformation (SDDFT) processor.
Đorđević-Kozarov Jelena   +4 more
doaj   +1 more source

Flexible Structured Illumination Microscope based on DMD and Focus-tunable Lens [PDF]

open access: yes한국정밀공학회지, 2021
In this investigation, we propose a flexible structured illumination microscope (FSIM) to eliminate mechanical moving parts for the phase shifts in the spatial pattern and longitudinal scanning of the specimen.
Hyo Bin Jeong, Ki-Nam Joo
doaj   +1 more source

An Early-Stop Adjoint Transient Sensitivity Analysis Method for Objective Functions Associated with Many Time Points

open access: yesTsinghua Science and Technology, 2023
Transient sensitivity analysis aims to obtain the gradients of objective functions (circuit performance) with respect to design or variation parameters in a simulator, which can be widely used in yield analysis and circuit optimization, among others ...
Wenfei Hu   +6 more
doaj   +1 more source

Consistent, accurate, high resolution, long time-series mapping of built-up land in the North China Plain

open access: yesGIScience & Remote Sensing, 2021
Accurate, long time-series, high-resolution mapping of built-up land dynamics is essential for understanding urbanization and its environmental impacts.
Jinzhu Wang   +2 more
doaj   +1 more source

On-chip optical spatial-domain integrator based on Fourier optics and metasurface

open access: yesNanophotonics, 2021
Analog optical computing has been an innovation and research interest in last several years, thanks to the ultra-high speed (potential for real-time processing), ultra-low power consumption and capability of parallel processing.
Chen Chao, Qi Wei, Yu Yu, Zhang Xinliang
doaj   +1 more source

On the Clifford-Fourier Transform [PDF]

open access: yesInternational Mathematics Research Notices, 2011
For functions that take values in the Clifford algebra, we study the Clifford-Fourier transform on $R^m$ defined with a kernel function $K(x,y) := e^{\frac{i π}{2} Γ_{y}}e^{-i }$, replacing the kernel $e^{i }$ of the ordinary Fourier transform, where $Γ_{y} := - \sum_ ...
De Bie, Hendrik, Xu, Yuan
openaire   +3 more sources

Fractional Fourier Transform [PDF]

open access: yes2001 European Control Conference (ECC), 2010
Chapter ...
Ozaktas, Haldun M.   +2 more
openaire   +5 more sources

Quot schemes and Fourier-Mukai transformation

open access: yesComplex Manifolds, 2023
We consider several related examples of Fourier-Mukai transformations involving the quot scheme. A method of showing conservativity of these Fourier-Mukai transformations is described.
Biswas Indranil   +3 more
doaj   +1 more source

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