Results 81 to 90 of about 380,680 (312)

Numerical investigation of transitional supersonic axisymmetric wakes

open access: yes, 2006
Transitional supersonic axisymmetric wakes are investigated by conducting various numerical experiments. The main objective is to identify hydrodynamic instability mechanisms in the flow at M=2.46 for several Reynolds numbers, and relating these to ...
Sandberg, Richard D., Fasel, Hermann F.
core   +1 more source

Efficient approximation of random fields for numerical applications [PDF]

open access: yes, 2014
This article is dedicated to the rapid computation of separable expansions for the approximation of random fields. We consider approaches based on techniques from the approximation of non-local operators on the one hand and based on the pivoted Cholesky ...
Michael Peters   +5 more
core   +1 more source

Optimizing photoactivation of PA‐mCherry for optical pooled CRISPR screens

open access: yesFEBS Open Bio, EarlyView.
Photoactivatable PA‐mCherry finds widespread use to optically tag individual cells. However, confocal 405 nm UV laser‐scanning (normal scan) is much less efficient than widefield UV illumination, limiting the use of PA‐mCherry on confocal instruments. We remedy this limitation by reporting that rapid and repeated confocal scanning with a low‐intensity,
Sravasti Mukherjee   +3 more
wiley   +1 more source

Abstract Compilation for Verification of Numerical Accuracy Properties

open access: yesCoRR, 2019
Verification of numerical accuracy properties in modern software remains an important and challenging task. This paper describes an original framework combining different solutions for numerical accuracy. First, we extend an existing runtime verification tool called E-ACSL with rational numbers to monitor accuracy properties at runtime.
Maxime Jacquemin   +4 more
openaire   +2 more sources

Accuracy of numerical solutions using the eulers equation residuals. [PDF]

open access: yes
In this paper we derive sorne asymptotic properties on the accuracy of numerical solutions. We sIlow tIlat the approximation error of the policy function is of the same order of magnitude as the size of the Euler equation residuals.
Santos, Manuel S.
core  

Non-conservative and conservative formulations of characteristics-based numerical reconstructions for incompressible flows. [PDF]

open access: yes, 2006
An investigation of characteristics-based (CB) schemes for solving the incompressible Navier-Stokes equations in conjunction with the artificial-compressibility approach, is presented.
Shapiro, Evgeniy, Drikakis, Dimitris
core   +1 more source

Refinement of amino‐acid conformation vs. difference density maps in time‐resolved serial femtosecond crystallography data analysis

open access: yesFEBS Open Bio, EarlyView.
The dFoCC pipeline starts with observed DED and resting‐state coordinates, which are then used to generate a library of triggered states. Correlation analysis of the calculated DED features of each candidate vs observed DED permits quantitative evaluation of candidate structural quality.
Meng Iao Fong   +3 more
wiley   +1 more source

Numerical Accuracy Improvement by Interprocedural Program Transformation

open access: yesProceedings of the 20th International Workshop on Software and Compilers for Embedded Systems, 2017
Floating-point numbers are used to approximate the exact real numbers in a wide range of domains like numerical simulations, embedded software, etc. However, floating-point numbers are a finite approximation of real numbers. In practice, this approximation may introduce round-off errors and this can lead to catastrophic results. To cope with this issue,
Nasrine Damouche   +2 more
openaire   +2 more sources

Controller reduction using accuracy-enhancing methods

open access: yes, 2005
The efficient solution of several classes of controller approximation problems by using frequency-weighted balancing related model reduction approaches is considered.
Varga, Andras
core  

Deterministic numerical solutions of the Boltzmann equation using the fast spectral method [PDF]

open access: yes, 2013
The Boltzmann equation describes the dynamics of rarefied gas flows, but the multidimensional nature of its collision operator poses a real challenge for its numerical solution. In this paper, the fast spectral method [36], originally developed by Mouhot
Reese, Jason M.   +6 more
core   +1 more source

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