This article explores municipal acceptance of wind power in Sweden and draws conclusions
on the basis of semi-structured interviews with municipal decision-makers, together with …

This paper presents a newly developed fast model order reduction boundary element
method (FMORBEM) for three-dimensional acoustic wave problems with the impedance …

We introduce a novel spectral element method based on the ultraspherical spectral method
and the hierarchical Poincaré–Steklov scheme for solving second-order linear partial …

We present a solver for the 2D high-frequency Helmholtz equation in heterogeneous
acoustic media, with online parallel complexity that scales optimally as O (NL), where N is …

We introduce a fast direct solver for variable-coefficient elliptic PDEs on surfaces based on
the hierarchical Poincaré–Steklov method. The method takes as input an unstructured, high …

This paper presents a fast algorithm for computing transport properties of two-dimensional
Dirac operators with linear domain walls, which model the macroscopic behavior of the …

A numerical method for solving elliptic PDEs with variable coefficients on two-dimensional
domains is presented. The method is based on high-order composite spectral …

In writing this book, I set out to create an accessible introduction to fast multipole methods
(FMMs) and techniques based on integral equation formulations. These are powerful tools …

We present the first fast solver for the high-frequency Helmholtz equation that scales
optimally in parallel for a single right-hand side. The L-sweeps approach achieves this …

In a set of problems ranging from 4-D seismic to salt boundary estimation, updates to the
velocity model often have a highly localized nature. Numerical techniques for these …