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We introduce a preconditioning technique based on Domain Decomposition and the Fast Diagonalization Method that can be applied to tensor product based discretizations of the steady convection-diffusion and the linearized Navier-Stokes equations. The method is based on iterative substructuring where fast diagonalization is used to efficiently eliminate the(More)
News sentiment has been empirically observed to have impact on financial market returns. In this study, we investigate firm-specific news from the Thomson Reuters News Analytics data from 2003 to 2014 and propose an optimal trading strategy based on a sentiment shock score and a sentiment trend score which measure extreme positive and negative sentiment(More)
Application results are described of a new parallel Navier-Stokes solver developed by Nektonics Inc. for NASA. The 3D unsteady code is based on the spectral-element method which combines the geometric exibility of nite-element methods and the high accuracy of spectral methods. The dis-cretization methodology, parallelization technique and performance(More)
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