Tim Sullivan

Junior Professor in Applied Mathematics:
Risk and Uncertainty Quantification

Optimal Uncertainty Quantification

Optimal Uncertainty Quantification in SIAM Review

The 2013 Q2 issue of SIAM Review will carry an article by Houman Owhadi, Clint Scovel, Mike McKerns, Michael Ortiz and myself on the optimization approaches to uncertainty quantification in the presence of infinite-dimensional epistemic uncertainties about the probability measures and response functions of interest.

We present both a mathematical framework for the reduction of such infinite-dimensional problems to finite-dimensional effective feasible sets, and apply the methods to practical examples arising in hypervelocity impact and seismic safety certification.

H. Owhadi, C. Scovel, T. J. Sullivan, M. McKerns & M. Ortiz. “Optimal Uncertainty Quantification.” SIAM Review 55(2):271–345, 2013. doi:10.1137/10080782X

Published on Monday 10 June 2013 at 20:00 UTC #publication

Optimal Uncertainty Quantification

Graphene Plasmonics in Phys. Rev. B

Physical Review B has published an article by Lauren Rast, Vinod Tewary and myself on stratified graphene/noble metal systems for low-loss plasmonics applications. This paper constitutes an initial study of the effect of geometric parameters such as layer thicknesses on the electron energy loss spectra of laminar metamaterials, consisting of a graphene surface, an intermediate noble metal layer, and a substrate.

L. Rast, T. J. Sullivan & V. K. Tewary. “Stratified graphene/noble metal systems for low-loss plasmonics applications.” Physical Review B 87(4):045428, 2013. doi:10.1103/PhysRevB.87.045428

Published on Thursday 31 January 2013 at 12:00 UTC #publication

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