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- W2032128562 abstract "Excursion sets of Gaussian random fields (GRFs) have been frequently used in the literature to model two-phase random media with measurable phase autocorrelation functions. The goal of successful modeling is finding the optimal field autocorrelation function that best approximates the prescribed phase autocorrelation function. In this paper, we present a technique which uses convex quadratic programming to find the best admissible field autocorrelation function under a prescribed discretization. Unlike previous methods, this technique efficiently optimizes over all admissible field autocorrelation functions, instead of optimizing only over a predetermined parametrized family. The results from using this technique indicate that the GRF model is significantly more versatile than observed in previous studies. An application to modeling a base-catalyzed tetraethoxysilane aerogel system given small-angle neutron scattering data is also presented." @default.
- W2032128562 created "2016-06-24" @default.
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- W2032128562 date "2007-04-30" @default.
- W2032128562 modified "2023-10-14" @default.
- W2032128562 title "Using convex quadratic programming to model random media with Gaussian random fields" @default.
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- W2032128562 doi "https://doi.org/10.1103/physreve.75.046709" @default.
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