Results 31 to 40 of about 66,276 (316)

Efficient Fourier Single-Pixel Imaging with Gaussian Random Sampling

open access: yesPhotonics, 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
doaj   +1 more source

Hyperbolic Fourier coefficients of Poincaré series [PDF]

open access: yesThe Ramanujan Journal, 2016
38 pages, typos ...
O'Sullivan, Cormac, Taylor, Karen
openaire   +3 more sources

Solutions to Differential-Differential Difference Equations with Variable Coefficients by Using Fourier Transform Method

open access: yesSüleyman 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
doaj   +1 more source

Some Fourier-Stieltjes Coefficients Revisited [PDF]

open access: yesProceedings of the American Mathematical Society, 1989
We give a new proof of a result of R. Salem: The Fourier-Stieltjes coefficients of certain strictly increasing singular functions do not vanish at infinity.
openaire   +2 more sources

Approximation of Functions on a Square by Interpolation Polynomials at Vertices and Few Fourier Coefficients

open access: yesJournal 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
doaj   +1 more source

Some theorems on Fourier coefficients [PDF]

open access: yesProceedings of the American Mathematical Society, 1959
where P is given by (1.1)? If one allows the coefficients Cn to be complex numbers of absolute value 1, an affirmative answer to the question is furnished by the partial sums of the series ZE inlogneinO; this example is due to Hardy and Littlewood [4, pp. 116-118]. A theorem of Salem and Zygmund [2, pp. 270, 278] shows, roughly speaking, that (N log N)"
openaire   +2 more sources

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

open access: yesFEBS 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

Convex functions and Fourier coefficients [PDF]

open access: yesProceedings of the American Mathematical Society, 1985
Let f f be a continuous function defined on the interval ( 0 , 1 ) (0,1) . For n = 1 , 2 , … n = 1,2, \ldots and 0 > s > t > 1 0 > s > t >
openaire   +2 more sources

Visual Recovery Reflects Cortical MeCP2 Sensitivity in Rett Syndrome

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Rett syndrome (RTT) is a devastating neurodevelopmental disorder with developmental regression affecting motor, sensory, and cognitive functions. Sensory disruptions contribute to the complex behavioral and cognitive difficulties and represent an important target for therapeutic interventions.
Alex Joseph Simon   +12 more
wiley   +1 more source

Asymptotic behavior of entire functions of improved regular growth in the metric of $L^p[0, 2\pi]$

open access: yesKarpatsʹkì 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’
doaj   +1 more source

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