J. Helsing

发表

Spectral super-resolution in metamaterial composites

Ross C. McPhedran, Graeme W. Milton, Johan Helsing, 2011, 1105.5012.

Solving integral equations on piecewise smooth boundaries using the RCIP method: a tutorial

J. Helsing, 2012, 1207.6737.

On the polarizability and capacitance of the cube

Johan Helsing, Karl-Mikael Perfekt, J. Helsing, 2012, 1203.5997.

Determination of Normalized Magnetic Eigenfields in Microwave Cavities

Anders Karlsson, Johan Helsing, J. Helsing, 2014, IEEE Transactions on Microwave Theory and Techniques.

Comparison of integral equations for the Maxwell transmission problem with general permittivities

J. Helsing, A. Karlsson, Andreas Ros'en, 2020, Advances in Computational Mathematics.

Metamaterial composites and super-resolution

G. Milton, J. Helsing, 2011 .

Classification of spectra of the Neumann–Poincaré operator on planar domains with corners by resonance

M. Lim, J. Helsing, Hyeonbae Kang, 2016, 1603.03522.

Electrostatics of anisotropic inclusions in anisotropic media

J. Helsing, K. Samuelsson, 1995 .

Improved bounds on the conductivity of composites by translation in a variational principle

J. Helsing, 1993 .

Physical-density integral equation methods for scattering from multi-dielectric cylinders

Anders Karlsson, Johan Helsing, J. Helsing, 2018, J. Comput. Phys..

Some computational aspects of iterated structures

J. Byström, J. Helsing, A. Meidell, 2001 .

Corner singularities for elliptic problems: Integral equations, graded meshes, quadrature, and compressed inverse preconditioning

Johan Helsing, Rikard Ojala, J. Helsing, 2008, J. Comput. Phys..

Inverse problem for a planar conductivity inclusion

M. Lim, J. Helsing, Doosung Choi, 2022, 2206.05593.

The spectra of harmonic layer potential operators on domains with rotationally symmetric conical points

J. Helsing, Karl‐Mikael Perfekt, 2017, Journal de Mathématiques Pures et Appliquées.

An accurate near-field solver for scattering from cylinders with corners

J. Helsing, A. Karlsson, 2013, 2013 International Symposium on Electromagnetic Theory.

Resonances and fields near metamaterial inclusions

R. McPhedran, G. Milton, J. Helsing, 2012, Proceedings of the 2012 IEEE International Symposium on Antennas and Propagation.

A Seventh-Order Accurate and Stable Algorithm for the Computation of Stress Inside Cracked Rectangular Domains

J. Helsing, Anders Jonsson, 2004 .

On the computation of stress fields on polygonal domains with V‐notches

J. Helsing, Anders Jonsson, 2002 .

Stress Calculations on Multiply Connected Domains

J. Helsing, Anders Jonsson, 2002 .

Bounds on the shear modulus of composites by interface integral methods

J. Helsing, 1994 .

Inverse problem for a planar conductivity inclusion

M. Lim, J. Helsing, Doosung Choi, 2022, 2206.05593.

Complex variable boundary integral equations for perforated infinite planes

J. Helsing, Anders Jonsson, 2001 .

A numerical study of the ζ2 and η2 structural parameters for a class of fiber‐reinforced composites

J. Helsing, H. Christiansson, 1995 .

An efficient full-wave solver for eddy currents

J. Helsing, A. Karlsson, Andreas Ros'en, 2021, Comput. Math. Appl..

Fast and accurate numerical solution to an elastostatic problem involving ten thousand randomly oriented cracks

J. Helsing, 1999 .

Conductivity Fluctuations in Two-Component Finite Systems

J. Helsing, J. Axell, 1990 .

Thermal conductivity of cast iron: Models and analysis of experiments

J. Helsing, G. Grimvall, 1991 .

STATISTICAL SIMULATIONS OF DIFFUSIONAL COARSENING IN FINITE CLUSTERS

S. P. Marsh, M. Glicksman, J. Helsing, 1998 .

Duality relations, correspondences and numerical results for planar elastic composites

A. Movchan, G. Milton, J. Helsing, 1997 .

A High-Order Accurate Algorithm for Electrostatics of Overlapping Disks

J. Helsing, 1998 .

A Nyström algorithm for electrostatics of an anisotropic composite

J. Helsing, 1995 .

Stress intensity factors for a crack in front of an inclusion

Johan Helsing, J. Helsing, 1999 .

Noise Modeler: An Interactive Editor and Library for Procedural Terrains via Continuous Generation and Compilation of GPU Shaders

Anne C. Elster, Johan K. Helsing, J. Helsing, 2015, ICEC.

Fast reconstruction of harmonic functions from Cauchy data using the Dirichlet-to-Neumann map and integral equations

B. Johansson, J. Helsing, 2011 .

RESEARCH ARTICLE Fast reconstruction of harmonic functions from Cauchy data using the Dirichlet-to-Neumann map and integral equations

B. Johansson, J. Helsing, 2010 .

Elastostatic computations on aggregates of grains with sharp interfaces, corners, and triple-junctions

Johan Helsing, Rikard Ojala, J. Helsing, 2009 .

Stress computations on perforated polygonal domains

Johan Helsing, Jonas Englund, J. Helsing, 2003 .

On the Interior Stress Problem for Elastic Bodies

J. Helsing, 2000 .

On the numerical evaluation of elastostatic fields in locally isotropic two-dimensional composites

L. Greengard, J. Helsing, 1998 .

Poisson’s ratio of fiber‐reinforced composites

J. Helsing, H. Christiansson, 1996 .

An integral equation method for elastostatics of periodic composites

Johan Helsing, J. Helsing, 1995 .

On a Helmholtz transmission problem in planar domains with corners

Anders Karlsson, Johan Helsing, J. Helsing, 2017, J. Comput. Phys..

On the numerical evaluation of stress intensity factors for an interface crack of a general shape

Johan Helsing, J. Helsing, 1999 .

Bounds to the conductivity of some two‐component composites

Johan Helsing, J. Helsing, 1993 .

Laplace's equation and the Dirichlet-Neumann map: a new mode for Mikhlin's method

Eddie Wadbro, Johan Helsing, E. Wadbro, 2005 .

A numerical study of the ζ2 parameter for random suspensions of disks

Leslie Greengard, Johan Helsing, L. Greengard, 1995 .

Fast and accurate calculations of structural parameters for suspensions

Johan Helsing, J. Helsing, 1994, Proceedings of the Royal Society of London. Series A: Mathematical and Physical Sciences.

Third‐order bounds on the conductivity of a random stacking of cubes

J. Helsing, 1994 .

Improved bounds on the conductivity of composites by interpolation

J. Helsing, 1994, Proceedings of the Royal Society of London. Series A: Mathematical and Physical Sciences.

The effective conductivity of random checkerboards

Johan Helsing, J. Helsing, 2011, J. Comput. Phys..

On the evaluation of layer potentials close to their sources

Johan Helsing, Rikard Ojala, J. Helsing, 2008, J. Comput. Phys..

An Extended Charge-Current Formulation of the Electromagnetic Transmission Problem

J. Helsing, A. Karlsson, 2019, SIAM J. Appl. Math..

An Accurate Boundary Value Problem Solver Applied to Scattering From Cylinders With Corners

Anders Karlsson, Johan Helsing, J. Helsing, 2012, IEEE Transactions on Antennas and Propagation.

Corner Effects on the Perturbation of an Electric Potential

Mikyoung Lim, Johan Helsing, Doo Sung Choi, 2017, SIAM J. Appl. Math..

Solving Fredholm second-kind integral equations with singular right-hand sides on non-smooth boundaries

Shidong Jiang, Johan Helsing, Shidong Jiang, 2021, J. Comput. Phys..

An explicit kernel-split panel-based Nyström scheme for integral equations on axially symmetric surfaces

Anders Karlsson, Johan Helsing, J. Helsing, 2013, J. Comput. Phys..

The effective conductivity of arrays of squares: Large random unit cells and extreme contrast ratios

Johan Helsing, J. Helsing, 2011, J. Comput. Phys..

On the Stability of the Nyström Method for the Muskhelishvili Equation on Contours with Corners

Victor Didenko, Johan Helsing, J. Helsing, 2013, SIAM J. Numer. Anal..

Stability of the Nyström Method for the Sherman-Lauricella Equation

Victor Didenko, Johan Helsing, J. Helsing, 2011, SIAM J. Numer. Anal..

Integral Equation Methods and Numerical Solutions of Crack and Inclusion Problems in Planar Elastostatics

Gunnar Peters, Johan Helsing, J. Helsing, 1998, SIAM J. Appl. Math..

EFFECTIVE CONDUCTIVITY OF AGGREGATES OF ANISOTROPIC GRAINS

J. Helsing, A. Helte, 1991 .

Variants of an explicit kernel-split panel-based Nyström discretization scheme for Helmholtz boundary value problems

Anders Holst, Johan Helsing, J. Helsing, 2013, Adv. Comput. Math..

Integral equation methods for elliptic problems with boundary conditions of mixed type

Johan Helsing, J. Helsing, 2009, J. Comput. Phys..

Faster convergence and higher accuracy for the Dirichlet-Neumann map

Johan Helsing, J. Helsing, 2009, J. Comput. Phys..

HERMITE INTERPOLATION OUTPERFORMS NYSTRÖM INTERPOLATION

J. Helsing, 2015 .

Corner singularities for elliptic problems: special basis functions versus "brute force"

J. Helsing, 2000 .

Thin Bridges in Isotropic Electrostatics

Johan Helsing, J. Helsing, 1996 .

Inverse Problem for a Planar Conductivity Inclusion

J. Helsing, Doosung Choi, Sangwoo Kang, 2022, SIAM J. Imaging Sci..

Determination of Normalized Magnetic Eigenfields in Microwave Cavities

J. Helsing, A. Karlsson, 2014, IEEE Transactions on Microwave Theory and Techniques.

Evaluation of the mode I stress intensity factor for a square crack in 3D

J. Helsing, Anders Jonsson, G. Peters, 2001 .

Stability of the Nyström Method for the Sherman-Lauricella Equation

J. Helsing, V. Didenko, 2011, SIAM Journal on Numerical Analysis.

Approximate solution of boundary integral equations for biharmonic problems in non‐smooth domains

Johan Helsing, J. Helsing, Victor D. Didenko, 2013 .

Features of the Nyström method for the Sherman-Lauricella equation on Piecewise Smooth Contours

Johan Helsing, J. Helsing, Victor D. Didenko, 2011 .