Levent Gürel
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Computer Science
Levent Gürel's Degrees
- PhD Computer Science Middle East Technical University
- Masters Computer Engineering Istanbul Technical University
- Bachelors Computer Engineering Istanbul Technical University
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Why Is Levent Gürel Influential?
(Suggest an Edit or Addition)According to Wikipedia, Levent Gürel is a Turkish scientist and electrical engineer. He was the director of Computational Electromagnetics Research Center and a professor in the Department of Electrical and Electronics Engineering at the Bilkent University, Turkey until November 2014. Currently, he is serving as an adjunct professor at the University of Illinois Urbana-Champaign, Department of Electrical and Computer Engineering. He is also serving as the founder and CEO of ABAKUS Computing Technologies.
Levent Gürel's Published Works
Number of citations in a given year to any of this author's works
Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author
Published Works
- Efficient Parallelization of the Multilevel Fast Multipole Algorithm for the Solution of Large-Scale Scattering Problems (2008) (129)
- Comparison of Integral-Equation Formulations for the Fast and Accurate Solution of Scattering Problems Involving Dielectric Objects with the Multilevel Fast Multipole Algorithm (2009) (125)
- A Hierarchical Partitioning Strategy for an Efficient Parallelization of the Multilevel Fast Multipole Algorithm (2009) (111)
- The Multilevel Fast Multipole Algorithm (MLFMA) for Solving Large-Scale Computational Electromagnetics Problems: Ergul/The Multilevel Fast Multipole Algorithm (MLFMA) for Solving Large-Scale Computational Electromagnetics Problems (2014) (105)
- Validation through comparison: Measurement and calculation of the bistatic radar cross section of a stealth target (2003) (97)
- Singularity of the magnetic-field Integral equation and its extraction (2005) (93)
- Three-dimensional FDTD modeling of a ground-penetrating radar (2000) (93)
- Incomplete LU Preconditioning with the Multilevel Fast Multipole Algorithm for Electromagnetic Scattering (2007) (86)
- Linear-Linear Basis Functions for MLFMA Solutions of Magnetic-Field and Combined-Field Integral Equations (2007) (74)
- JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS (2012) (73)
- Simulations of ground-penetrating radars over lossy and heterogeneous grounds (2001) (73)
- A generalized recursive algorithm for wave-scattering solutions in two dimensions (1992) (70)
- The use of curl-conforming basis functions for the magnetic-field integral equation (2006) (69)
- Hierarchical parallelisation strategy for multilevel fast multipole algorithm in computational electromagnetics (2008) (68)
- Fast and accurate solutions of extremely large integral-equation problems discretised with tens of millions of unknowns (2007) (67)
- Improving the accuracy of the magnetic field integral equation with the linear-linear basis functions (2006) (60)
- Investigation of the inaccuracy of the MFIE discretized with the RWG basis functions (2004) (57)
- Rigorous Solutions of Electromagnetic Problems Involving Hundreds of Millions of Unknowns (2011) (56)
- An efficient and accurate technique for the incident-wave excitations in the FDTD method (1998) (53)
- Electromagnetic scattering solution of conducting strips in layered media using the fast multipole method (1996) (50)
- Comparisons of FMM implementations employing different formulations and iterative solvers (2003) (44)
- Design and Simulation of Circular Arrays of Trapezoidal-Tooth Log-Periodic Antennas via Genetic Optimization (2008) (40)
- Fast and accurate solutions of extremely large integral-equation problems discretised with tens of millions of unknowns (2007) (40)
- Fast and accurate analysis of large metamaterial structures using the multilevel fast multipole algorithm (2009) (39)
- SOLUTIONS OF LARGE-SCALE ELECTROMAGNETICS PROBLEMS USING AN ITERATIVE INNER-OUTER SCHEME WITH ORDINARY AND APPROXIMATE MULTILEVEL FAST MULTIPOLE ALGORITHMS (2010) (38)
- Frequency responses of ground-penetrating radars operating over highly lossy grounds (2002) (38)
- Optimal Interpolation of Translation Operator in Multilevel Fast Multipole Algorithm (2006) (36)
- Accelerating the Multilevel Fast Multipole Algorithm with the Sparse-Approximate-Inverse (SAI) Preconditioning (2009) (35)
- Enhancing the Accuracy of the Interpolations and Anterpolations in MLFMA (2006) (35)
- Recursive algorithm for wave-scattering solutions using windowed addition theorem (1992) (33)
- On the choice of basis functions to model surface electric current densities in computational electromagnetics (1999) (33)
- Improving the accuracy of the MFIE with the choice of basis functions (2004) (33)
- A recursive T‐matrix algorithm for strips and patches (1992) (32)
- Solid-angle factor in the magnetic-field integral equation (2005) (31)
- Efficient Solutions of Metamaterial Problems Using a Low-Frequency Multilevel Fast Multipole Algorithm (2010) (30)
- Improved testing of the magnetic-Field integral equation (2005) (30)
- Recursive algorithms for calculating the scattering from N strips or patches (1990) (29)
- Discretization error due to the identity operator in surface integral equations (2009) (29)
- Interpolation techniques to improve the accuracy of the plane wave excitations in the finite difference time domain method (1997) (28)
- Signal-processing techniques to reduce the sinusoidal steady-state error in the FDTD method (2000) (26)
- Optimization of the transmitter-receiver separation in the ground-penetrating radar (2003) (25)
- Contamination of the Accuracy of the Combined-Field Integral Equation With the Discretization Error of the Magnetic-Field Integral Equation (2009) (24)
- Efficient Parallelization of Multilevel Fast Multipole Algorithm (2006) (23)
- Extending the Applicability of the Combined-Field Integral Equation to Geometries Containing Open Surfaces (2006) (23)
- Fast and accurate analysis of large-scale composite structures with the parallel multilevel fast multipole algorithm. (2013) (22)
- Sequential and parallel preconditioners for large-scale integral-equation problems (2007) (22)
- Modeling of ground-penetrating-radar antennas with shields and simulated absorbers (2001) (21)
- Schur Complement Preconditioners for Surface Integral-Equation Formulations of Dielectric Problems Solved with the Multilevel Fast Multipole Algorithm (2011) (20)
- Hierarchical parallelization of the multilevel fast multipole algorithm (MLFMA) (2013) (20)
- Efficient solution of the electric and magnetic current combined‐field integral equation with the multilevel fast multipole algorithm and block‐diagonal preconditioning (2009) (19)
- Stabilization of Integral-Equation Formulations for the Accurate Solution of Scattering Problems Involving Low-Contrast Dielectric Objects (2008) (19)
- Iterative Solutions of Hybrid Integral Equations for Coexisting Open and Closed Surfaces (2009) (19)
- Efficient Solution of the Electric-Field Integral Equation Using the Iterative LSQR Algorithm (2008) (17)
- Analysis of Dielectric Photonic-Crystal Problems With MLFMA and Schur-Complement Preconditioners (2011) (17)
- Efficient methods for electromagnetic characterization of 2-D geometries in stratified media (1998) (17)
- Discretization error due to the identity operator in surface integral equations (2009) (17)
- Reflection and transmission operators for strips or disks embedded in homogenous and layered media (1988) (17)
- Approximate MLFMA as an efficient preconditioner (2007) (16)
- Accurate solutions of extremely large integral-equation problems in computational electromagnetics (2013) (15)
- Hierarchical parallelization of the multilevel fast multipole algorithm (MLFMA) (2013) (14)
- Guidance or resonance conditions for strips or disks embedded in homogeneous and layered media (1988) (14)
- Macro-modeling of electromagnetic domains exhibiting geometric and material uncertainty (2012) (13)
- Recursive T-matrix algorithms for the solution of electromagnetic scattering from strip and patch geometries (1993) (13)
- Computational study of scattering from healthy and diseased red blood cells. (2010) (12)
- Two-Step Lagrange Interpolation Method for the Multilevel Fast Multipole Algorithm (2009) (12)
- Parallel-MLFMA Solution of CFIE Discretized with Tens of Millions of Unknowns (2007) (12)
- EFIE and MFIE, why the difference? (2008) (11)
- Accurate Analysis of Metamaterials Involving Finite Arrays of Split-ring Resonators and Thin Wires (2007) (11)
- Hierarchical parallelization of the multilevel fast multipole algorithm for the efficient solution of large-scale scattering problems (2008) (11)
- Computational study of scattering from healthy and diseased red blood cells. (2010) (11)
- Efficient surface integral equation methods for the analysis of complex metamaterial structures (2009) (10)
- Nonplanar trapezoidal tooth log-periodic antennas: Design and electromagnetic modeling (2005) (10)
- Comparative benchmarking: matrix multiplication on a multicore coprocessor and a GPU (2015) (10)
- Computational analysis of complicated metamaterial structures using MLFMA and nested preconditioners (2007) (10)
- Scattering solution of three-dimensional array of patches using the recursive T-matrix algorithms (1992) (10)
- Iterative Near-Field Preconditioner for the Multilevel Fast Multipole Algorithm (2010) (10)
- Memory-efficient multilevel physical optics algorithm for fast computation of scattering from three-dimensional complex targets (2007) (10)
- Incomplete LU Preconditioning Strategies for MLFMA (2006) (10)
- Accurate solutions of extremely large integral-equation problems in computational electromagnetics (2013) (10)
- Modeling and synthesis of circular‐sectoral arrays of log‐periodic antennas using multilevel fast multipole algorithm and genetic algorithms (2007) (9)
- Effective Preconditioners for Large Integral-Equation Problems (2007) (8)
- Subsurface-scattering calculations via the 3D FDTD method employing PML ABC for layered media (1997) (8)
- A Fast and Massively-Parallel Inverse Solver for Multiple-Scattering Tomographic Image Reconstruction (2018) (8)
- Novel electromagnetic surface integral equations for highly accurate computations of dielectric bodies with arbitrarily low contrasts (2008) (8)
- MLFMA memory reduction techniques for solving large-scale problems (2014) (8)
- Fast and accurate solutions of scattering problems involving dielectric objects with moderate and low contrasts (2007) (7)
- Transmitter‐receiver‐transmitter configurations of ground‐penetrating radar (2002) (7)
- Hybrid CFIE-EFIE solution of composite geometries with coexisting open and closed surfaces (2005) (6)
- Improving Iterative Solutions of the Electric-Field Integral Equation Via Transformations Into Normal Equations (2010) (6)
- Fast and accurate solutions of large-scale scattering problems with parallel multilevel fast multipole algorithm (2007) (6)
- Hybridizing physical optics with MLFMA for efficient scattering computations of three-dimensional complex targets (2009) (6)
- Multilevel physical optics algorithm for fast solution of scattering problems involving nonuniform triangulations (2007) (6)
- PO-MLFMA Hybrid Technique for the Solution of Electromagnetic Scattering Problems Involving Complex Targets (2007) (6)
- Large inverse-scattering solutions with DBIM on GPU-enabled supercomputers (2017) (6)
- Employing PML absorbers in the design and simulation of ground penetrating radars (1999) (5)
- Efficient solution of the electric and magnetic current combined‐field integral equation with the multilevel fast multipole algorithm and block‐diagonal preconditioning (2009) (5)
- A comparison of surface-modeling techniques (1997) (5)
- Solution of Extremely Large Integral-Equation Problems (2007) (5)
- Solutions of Extremely Large Electromagnetics Problems Involving Tens of Millions of Unknowns Using Parallel MLFMA and Preconditioners (2008) (5)
- Benchmark solutions of large problems for evaluating accuracy and efficiency of electromagnetics solvers (2011) (5)
- Fast algorithm for scattering from planar arrays of conducting patches (1998) (5)
- Accuracy: The frequently overlooked parameter in the solution of extremely large problems (2011) (5)
- Improving the accuracy of the surface integral equations for low-contrast dielectric scatterers (2007) (5)
- Electromagnetic imaging of three-dimensional dielectric objects with Newton minimization (2014) (5)
- Efficient solution of the combined-field integral equation with the parallel multilevel fast multipole algorithm (2007) (5)
- On the Accuracy of MFIE and CFIE in the Solution of Large Electromagnetic Scattering Problems (2006) (5)
- Accurate Modeling of Metamaterials with MLFMA (2006) (4)
- Accurate Solutions of Scattering Problems Involving Low-Contrast Dielectric Objects with Surface Integral Equations (2007) (4)
- Shape reconstruction of three-dimensional conducting objects via near-field measurements (2014) (4)
- Fast multipole method in layered media: 2-D electromagnetic scattering problems (1996) (4)
- Fast and accurate analysis of large-scale composite structures with the parallel multilevel fast multipole algorithm. (2013) (4)
- Novel electromagnetic surface integral equations for highly accurate computations of dielectric bodies with arbitrarily low contrasts (2008) (4)
- MLFMA solutions of transmission problems involving realistic metamaterial walls (2007) (3)
- Recursive algorithms for computational electromagnetics (1991) (3)
- Quantitative comparison of rooftop and RWG basis functions (1997) (3)
- Parallelization of MLFMA for the Solution of Large-Scale Electromagnetics Problems (2014) (3)
- Fast direct solution algorithm for electromagnetic scattering from 3D planar and quasi-planar geometries (1997) (3)
- Application of Signal-Processing Techniques To Dipole Excitations in the Finite-Difference Time-Domain Method (2002) (3)
- Fast solution of electromagnetic scattering problems with multiple excitations using the recompressed adaptive cross approximation (2014) (3)
- Scalable parallelization of the sparse-approximate-inverse (SAI) preconditioner for the solution of large-scale integral-equation problems (2009) (3)
- Preconditioned MLFMA solution of multiple dielectric-metallic composite objects with the electric and magnetic current combined-field integral equation (JMCFIE) (2009) (3)
- Preconditioning iterative MLFMA solutions of integral equations (2010) (3)
- Coupled matrix pencil method for frequency extrapolation of electromagnetic solutions (2005) (3)
- Improving the accuracy of the magnetic field integral equation with the linear‐linear basis functions (2006) (3)
- Multilevel PO algorithm for nonuniform triangulations (2006) (3)
- Log-periodic antenna design using electromagnetic simulations (2003) (3)
- An effective preconditioner based on schur complement reduction for integral-equation formulations of dielectric problems (2009) (3)
- Investigation of various metamaterial structures using multilevel fast multipole algorithm (2007) (3)
- On the errors arising in surface integral equations due to the discretization of the identity operator (2009) (2)
- An efficient parallel implementation of the multilevel fast multipole algorithm for rigorous solutions of large-scale scattering problems (2010) (2)
- Advanced partitioning and communication strategies for the efficient parallelization of the multilevel fast multipole algorithm† (2010) (2)
- The Solution of Large EFIE Problems via Preconditioned Multilevel Fast Multipole Algorithm (2007) (2)
- Iterative Solution of Composite Problems with the Combined-Field Integral Equation (2006) (2)
- Microwave imaging of three-dimensional conducting objects using the newton minimization approach (2013) (2)
- Approximate Schur preconditioners for efficient solutions of dielectric problems formulated with surface integral equations (2009) (2)
- Iterative solution of the normal-equations form of the electric-field integral equation (2007) (2)
- Parallel out-of-core MLFMA on distributed-memory computer architectures (2015) (2)
- Rigorous solutions of scattering problems involving red blood cells (2010) (2)
- Parallel preconditioners for solutions of dense linear systems with tens of millions of unknowns (2007) (2)
- An MPIxOpenMP implementation of the hierarchical parallelization of MLFMA (2015) (2)
- Design of Circular Log-Periodic Arrays using Electromagnetic Simulations (2006) (2)
- Solution of radiation problems using the fast multipole method (1997) (2)
- Scalable parallel DBIM solutions of inverse-scattering problems (2017) (2)
- Efficient Preconditioning Strategies for the Multilevel Fast Multipole Algorithm (2007) (2)
- Effective Preconditioning Techniques for Iterative Solutions of Integral Equation Methods (2006) (2)
- Transmitter‐receiver‐transmitter‐configured ground‐penetrating radars over randomly heterogeneous ground models (2002) (2)
- Circular arrays of log-periodic antennas for broadband applications (2006) (1)
- Contamination of the Accuracy of the Surface Integral Equations with the Discretization Error of the Identity Operator (2008) (1)
- Rigorous analysis of double-negative materials with the multilevel fast multipole algorithm (2012) (1)
- Iterative Solutions of Electromagnetics Problems with MLFMA (2014) (1)
- Higher-Order Techniques in Computational Electromagnetics [Book Review] (2016) (1)
- Full-wave and approximate solutions of large electromagnetic scattering problems (2015) (1)
- FMM Computation of the Bistatic RCS of Stealth and Nonstealth Targets (2002) (1)
- Solution of low-frequency electromagnetics problems using hierarchical matrices (2013) (1)
- Simulation of TRT-configured ground-penetrating radars over heterogeneous grounds (2001) (1)
- Combined-field solution of composite geometries involving open and closed conducting surfaces (2005) (1)
- Accelerating hybrid integral-equation and physical-optics solutions with MLFMA (2015) (1)
- On the Lagrange interpolation in multilevel fast multipole algorithm (2006) (1)
- Small and Short-Range Radar Systems [Book Review] (2016) (1)
- Incomplete LU Preconditioning for the Electric-Field Integral Equation (2006) (1)
- Accurate plane-wave excitation in the FDTD method (1997) (1)
- Rigorous solutions of large-scale scattering problems discretized with hundreds of millions of unknowns (2009) (1)
- Benchmarking the solutions of billion-unknown problems (2017) (1)
- Preconditioning large integral-equation problems involving complex targets (2008) (1)
- LU PRECONDITIONING FOR THE ELECTRIC-FIELD INTEGRAL EQUATION (2006) (1)
- Solutions of electromagnetics problems involving hundreds of millions of unknowns with parallel multilevel fast multipole algorithm (2009) (1)
- Modeling and synthesis of circular‐sectoral arrays of log‐periodic antennas using multilevel fast multipole algorithm and genetic algorithms (2007) (1)
- Three-dimensional FDTD modeling of a GPR (2000) (1)
- Iterative Block Near-Field Preconditioners for Surface Integral-Equation Formulations of Dielectric Problems (2008) (1)
- Electromagnetic Modeling of Split-Ring Resonators (2006) (1)
- Fast algorithm for electromagnetic solution of modified-geometry problems (1993) (1)
- Reducing MLFMA memory with out-of-core implementation and data-structure parallelization (2013) (1)
- Windowed equivalence principle for open surfaces (2013) (1)
- Solutions of large integral-equation problems with preconditioned MLFMA (2007) (1)
- Scaling Analysis of a Hierarchical Parallelization of Large Inverse Multiple-Scattering Solutions (2017) (1)
- Solutions of Large Integral-Equation Problems with Parallel Preconditioned MLFMA ∗ (2006) (1)
- Analysis of photonic-crystal problems with MLFMA and approximate Schur preconditioners (2009) (1)
- On the Lagrange Interpolation in Multilevel Fast Multipole Algorithm (2006) (0)
- Electromagnetic Boundary Problems [Book Review] (2016) (0)
- PARALLEL-MLFMA SOLUTION OF CFIE DISCRETIZED WITH TENS OF MILLIONS OF UNKNOWNS (2007) (0)
- Rigorous Solutions of Large-Scale Scattering Problems Discretized with Hundreds of Millions of Unknowns (2009) (0)
- Approximate MLFMA as an Efficient Preconditioner1 (2007) (0)
- Analysis of double-negative materials with surface integral equations and the multilevel fast multipole algorithm (2011) (0)
- Rigorous Analysis of Circular Log-Periodic Arrays Using the Multilevel Fast Multipole Algorithm † (2006) (0)
- Foundations for Radio Frequency Engineering [Book Review] (2016) (0)
- 37 . 5 Quantitative Comparison of Rooftop and , RWG Basis Functionst (0)
- Iterative solution of dielectric waveguide problems via Schur complement preconditioners (2010) (0)
- Algebraic acceleration and regularization of the source reconstruction method with the recompressed adaptive cross approximation (2014) (0)
- Three-Dimensional Electromagnetic Modeling of Various GPR Problems (2003) (0)
- Parallel-MLFMA solutions of large-scale problems involving composite objects (2012) (0)
- Coupled Deconvolution forFrequency Extrapolation ofElectromagnetic Solutions withMatrix Pencil Methodt (2005) (0)
- Benchmarking the solutions of billion-unknown problems (2017) (0)
- A modified equivalence principle for open surfaces (2014) (0)
- Solid‐angle factor in the magnetic‐field integral equation (0)
- Reply to "Comments on 'The Use of Curl-Conforming Basis Functions for the Magnetic-Field Integral Equation'" (2008) (0)
- Fast and accurate solutions of extremely large scattering problems involving three-dimensional canonical and complicated objects (2009) (0)
- Fast and accurate analysis of complicated metamaterial structures using a low-frequency multilevel fast multipole algorithm (2009) (0)
- A windowed recursive T-matrix algorithm for wave-scattering solutions (1992) (0)
- Improving Iterative Solutions of the Electric-Field Integral Equation Via Transformations Into Normal Equations (2010) (0)
- Analysis of lossy dielectric objects with the multilevel fast multipole algorithm (2011) (0)
- Efficient parallelization of the multilevel fast multipole algorithm (MLFMA) (2012) (0)
- Solutions of Electromagnetics Problems with Surface Integral Equations (2014) (0)
- Accuracy and efficiency considerations in the solution of extremely large electromagnetics problems (2011) (0)
- Conceptual Electromagnetics? [Book Review] (2017) (0)
- PIERS 2008 CAMBRIDGE ORGANIZATION (2008) (0)
- Application of signal-processing techniques to reduce the errors related to the FDTD excitations (2001) (0)
- Correction to “Optimal Interpolation of Translation Operator in Multilevel Fast Multipole Algorithm” [Dec 06 3822-3826] (2009) (0)
- Fast multipole methods in service of various scientific disciplines (2014) (0)
- [Illinois] Accurate Solutions Of Extremely Large Integral-Equation Problems Involving Complex Metamaterial Structures (2014) (0)
- Analysis of composite objects involving multiple dielectric and metallic partswith the parallel multilevel fast multipole algorithm (2012) (0)
- Fast algorithms and parallel computing: solution of extremely large integral equations in computational electromagnetics (2012) (0)
- Solutions of Large Problems of Computational Electromagnetics at Bilkent University † (2006) (0)
- FDTD simulations of multiple GPR systems (2003) (0)
- EFIE , MFIE , and CFIE Solutions of Electromagnetic Scattering Problems (2003) (0)
- Towards Exascale Computing for Autonomous Driving (2018) (0)
- Hierarchical Parallelization of MLFMA for the Ef fi cient Solution of Large-Scale Electromagnetics Problems (2008) (0)
- Fast noniterative steepest descent path algorithm for planar and quasi-planar patch geometries (1998) (0)
- Efficient and Accurate Analysis of Large Metamaterial Structures with the Multilevel Fast Multipole Algorithm † (2006) (0)
- Field-Based-Stabilized Combined Tangential Formulation for the Accurate Solution of Scattering Problems Involving Low-Contrast Dielectric Objects (2008) (0)
- On the frequency-band selection for ground-penetrating radars operating over lossy and heterogeneous grounds (2001) (0)
- LU Preconditioning Strategies for MLFMA 1 (2006) (0)
- Rigorous solutions of large-scale dielectric problems with the parallel multilevel fast multipole algorithm (2011) (0)
- Advanced numerical techniques for the scattering of waves by dielectric scatterers (2012) (0)
- Nonplanar trapezoidal tooth log‐periodic antennas: Design and electromagnetic modeling (2005) (0)
- Fast computation of scattering from (near-)resonant structures (1999) (0)
- Reducing the Dispersion Errors of the Finite-Difference Time-Domain Method for Multifrequency Plane-Wave Excitations (2003) (0)
- Fast and Accurate Analysis of Complicated Metamaterial Structures Using a Low-Frequency Multilevel Fast Multipole Algorithm (2009) (0)
- Solution of large-scale scattering problems with the multilevel fast multipole algorithm parallelized on distributed-memory architectures (2007) (0)
- Coupled deconvolution for frequency extrapolation of electromagnetic solutions with matrix pencil method (2005) (0)
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