Results 21 to 30 of about 166,521,371 (311)

An Instantaneous Correlation Coefficient and Simplified Coherent Averaging Method for Single-Channel Foetal ECG Extraction

open access: yesApplied Sciences, 2020
In this paper, an instantaneous correlation coefficient and simplified coherent averaging method for single-channel foetal ECG (FECG) extraction is proposed. The instantaneous correlation coefficient is used to determine the position of the R peak of the
Miao Zhang, Guo Wei
doaj   +1 more source

Equivalence between volume averaging and moments matching techniques for mass transport models in porous media. [PDF]

open access: yes, 2010
This paper deals with local non-equilibrium models for mass transport in dual-phase and dual-region porous media. The first contribution of this study is to formally prove that the time-asymptotic moments matching method applied to two-equation models is
Davit, Yohan   +5 more
core   +1 more source

Averaging Methods for Second-Order Differential Equations and Their Application for Impact Systems

open access: yesMathematics, 2020
In this paper, we discuss the averaging method for periodic systems of second order and the behavior of solutions that intersect a hyperplane. We prove an averaging theorem for impact systems.
Michal Fečkan, Július Pačuta
doaj   +1 more source

Finding the Optimal Multimodel Averaging Method for Global Hydrological Simulations

open access: yesRemote Sensing, 2021
Global gridded precipitations have been extensively considered as the input of hydrological models for runoff simulations around the world. However, the limitations of hydrologic models and the inaccuracies of the precipitation datasets could result in ...
Wenyan Qi   +3 more
doaj   +1 more source

A method to average immunofluorescent histograms [PDF]

open access: yesCytometry, 1986
AbstractSingle parameter gated flow cytometric fluorescent histograms were obtained on normal donor blood mononuclear cells using several commonly available lymphocyte surface markers. A computer method was developed to average single parameter flow cytometric immunofluorescent histograms.
G E, Marti   +3 more
openaire   +2 more sources

Biofilms in porous media: development of macroscopic transport equations via volume averaging with closure for local mass equilibrium conditions [PDF]

open access: yes, 2009
In this work, we upscale a pore-scale description of mass transport in a porous medium containing biofilm to develop the relevant Darcy-scale equations.
Quintard, Michel   +4 more
core   +1 more source

An extraction of cycle-to-cycle variation of in-cylinder flow using temporal / spatial averaging and a proposal of variable sized spatial filtering

open access: yesNihon Kikai Gakkai ronbunshu, 2019
Cycle-to-cycle variation (CCV) of in-cylinder flow occurs in internal combustion engines. It is necessary to analyze CCV of flow to separate averaged-flow (as low frequency / low wave number) from turbulence (as high frequency / high wave number ...
Satoshi HOKIMOTO   +6 more
doaj   +1 more source

Phase stable swept-source optical coherence tomography with active mode-locking laser for contrast enhancements of retinal angiography

open access: yesScientific Reports, 2021
Swept-source optical coherence tomography (SS-OCT) is an attractive high-speed imaging technique for retinal angiography. However, conventional swept lasers vary the cavity length of the laser mechanically to tune the output wavelength. This causes sweep-
Kwan Seob Park   +5 more
doaj   +1 more source

CT Volumetry of Convoluted Objects—A Simple Method Using Volume Averaging

open access: yesTomography, 2021
Accurate measurement of object volumes using computed tomography is often important but can be challenging, especially for finely convoluted objects with severe marginal blurring from volume averaging. We aimed to test the accuracy of a simple method for
Rani Al-Senan, Jeffrey H. Newhouse
doaj   +1 more source

The average method is much better than average

open access: yesJournal of Computational and Applied Mechanics, 2021
Operator splitting is a powerful method for the numerical investigation of complex time-dependent models, where the stationary (elliptic) part consists of a sum of several structurally simpler sub-operators. As an alternative to the classical splitting methods, a new splitting scheme is proposed here, the Average Method with sequential splitting.
Lívia Boda   +2 more
openaire   +1 more source

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