Results 31 to 40 of about 1,311,043 (300)
Efficient Fourier Single-Pixel Imaging with Gaussian Random Sampling
Photonics, 2021 Fourier single-pixel imaging (FSI) is a branch of single-pixel imaging techniques. It allows any image to be reconstructed by acquiring its Fourier spectrum by using a single-pixel detector.
Ziheng Qiu +5 more
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Süleyman Demirel Üniversitesi Fen-Edebiyat Fakültesi Fen Dergisi, 2023 In this paper, differential-differential difference equations with variable coefficients have been solved using the Fourier Transform Method (FTM). In addition, new definitions and theorems are introduced.
Sunnet Avezov, Murat Düz, Ahmad Issa
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Changing Signs of Fourier Coefficients [PDF]
Pacific Journal of Mathematics, 1965 In this chapter we shall be concerned with some remarkable facts concerning not one Fourier series $$ \sum\limits_{{{\text{n}} \in {\text{Z}}}} {\hat{f}(n){e^{{{\text{inx}}}}}}, $$ but rather “most” series $$ \sum\limits_{{{\text{n}} \in {\text{Z}}}} {\pm \hat{f}(n){e^{{{\text{inx}}}}}} $$ of the family obtained by making random changes ...
openaire +4 more sources
Journal of Function Spaces, 2017 For a bivariate function on a square, in general, its Fourier coefficients decay slowly, so one cannot reconstruct it by few Fourier coefficients. In this paper we will develop a new approximation scheme to overcome the weakness of Fourier approximation.
Zhihua Zhang
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Fourier coefficients of Mathieu functions in stable regions
, 1969 A method for calculating the Fourier coefficients of Mathieu functions in stable regions based on the method of bisection and Miller's recurrence algorithm is introduced.
Fruchting, Henning
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On the asymptotic behavior of the Fourier coefficients of Mathieu functions
, 2008 The asymptotic behavior of the Fourier coefficients A(m)(n)(q) and B-m(n)(q) of the periodic Mathieu functions ce(n)(z, q) and se(n)(z, q) is derived for fixed n and q (not equal 0), as m -> infinity.
Wolf, Gerhard
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FEBS Open Bio, EarlyView.This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill +4 more
wiley +1 more source
Asymptotic behavior of entire functions of improved regular growth in the metric of $L^p[0, 2\pi]$
Karpatsʹkì Matematičnì Publìkacìï, 2013 We describe an asymptotic behavior of entire functions of improved regular growth with zeros on a finite system of rays in the metric of $L^p[0, 2\pi]$.
R.V. Khats’
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Decay of Fourier coefficients.
, 2013 We plot versus to illustrate the decay of Fourier coefficients for the three methods. The iterative and perturbative curves coincide and are nearly linear with slope ; the exponential decay of these Fourier coefficients is consistent with theory.
Harish S. Bhat (479312) +1 more
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Comparative assessment of crystallographic and cryo‐EM models in the Protein Data Bank
FEBS Open Bio, EarlyView.Raw data obtained by X‐ray crystallography or cryo‐EM result in experimental maps, ultimately fitted by atomic models. Although the physical principles are different, the final results can be viewed, compared, and evaluated in the same way. With cryogenic electron microscopy (cryo‐EM) on track to surpass X‐ray crystallography as the preferred method ...
Alexander Wlodawer +7 more
wiley +1 more source