Results 61 to 70 of about 10,707,489 (316)

3D Non-Uniform Fast Fourier Transform Program Optimization

open access: yesApplied Sciences
MRI (magnetic resonance imaging) technology aims to map the internal structure image of organisms. It is an important application scenario of Non-Uniform Fast Fourier Transform (NUFFT), which can help doctors quickly locate the lesion site of patients ...
Kai Nie   +4 more
doaj   +1 more source

Non-classical thermal physics in force-driven micro-channel gas flows [PDF]

open access: yes, 2014
This paper was presented at the 4th Micro and Nano Flows Conference (MNF2014), which was held at University College, London, UK. The conference was organised by Brunel University and supported by the Italian Union of Thermofluiddynamics, IPEM, the ...
4th Micro and Nano Flows Conference (MNF2014)   +1 more
core  

Nonlinear Behavior of Baryon Acoustic Oscillations from the Zel'dovich Approximation Using a Non-Fourier Perturbation Approach

open access: yes, 2012
Baryon acoustic oscillations are an excellent technique to constrain the properties of dark energy in the Universe. In order to accurately characterize the dark energy equation of state, we must understand the effects of both the nonlinearities and ...
McCullagh, Nuala, Szalay, Alexander S.
core   +1 more source

GESPAR: Efficient Phase Retrieval of Sparse Signals [PDF]

open access: yes, 2013
We consider the problem of phase retrieval, namely, recovery of a signal from the magnitude of its Fourier transform, or of any other linear transform. Due to the loss of the Fourier phase information, this problem is ill-posed.
Beck, Amir   +2 more
core   +2 more sources

Pioglitazone plus (−)‐epigallocatechin gallate: a novel approach to enhance osteogenic performance in aged bone marrow mesenchymal stem cells

open access: yesFEBS Open Bio, EarlyView.
Aged human bmMSCs are seeded in the scaffold. Osteoblastic induction can slightly increase cell's bone‐forming activity to produce bone‐like tissues, shown as the sporadic xylenol orange‐stained spots (the lower left image). Notably, pioglitazone plus EGCG co‐treatment dramatically increases cell's bone‐forming activity and bone‐like tissue production (
Ching‐Yun Chen   +6 more
wiley   +1 more source

Application of time-frequency spectral analysis methods

open access: yesTrudy Odesskogo Politehničeskogo Universiteta, 2015
In this article the limited application of the non-stationary signals spectra classical analysis using the Fourier transform is substantiated. It is shown that Fourier transform has benefits at periodic signals analysis and limitations when non ...
Yuriy K. Filipsky   +2 more
doaj   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei   +3 more
wiley   +1 more source

Joseph Fourier 250thBirthday: Modern Fourier Analysis and Fourier Heat Equation in Information Sciences for the XXIst Century

open access: yesEntropy, 2019
For the 250th birthday of Joseph Fourier, born in 1768 at Auxerre in France, this MDPI special issue will explore modern topics related to Fourier analysis and Fourier Heat Equation.
Frédéric Barbaresco   +1 more
doaj   +1 more source

A thermo-mechanically consistent Burnett regime continuum flow equation without Chapman-Enskog expansion [PDF]

open access: yes, 2013
Chapman-Enskog expansion is the orthodox approach to derive continuum flow models from Boltzmann’s kinetic equation for dilute gases. Beyond the Navier-Stokes-Fourier order, these models known as Burnett hydrodynamic-regime equations violate a number of ...
Dadzie, Kokou
core   +1 more source

Computational modeling of non Fourier motion

open access: yesJournal of Vision, 2010
We apply a computational model of biological motion processing [1,2] to a class of stimuli described by Taub et al [3]. In these, n translating sine waves, separated by 2pi/n radians but otherwise identical, are randomly sampled spatially to produce an nth order stimulus. For n > 1, the motion of these stimuli is non-Fourier.
C. P. Benton, A. Johnston, P. W. McOwan
openaire   +1 more source

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