@article{eslaminia_elmeliegy_guddati_2023, title={Improved least-squares migration through double-sweeping solver}, volume={88}, ISSN={["1942-2156"]}, url={https://doi.org/10.1190/geo2021-0628.1}, DOI={10.1190/GEO2021-0628.1}, abstractNote={Based on a recently developed approximate wave-equation solver, we have developed a methodology to reduce the computational cost of seismic migration in the frequency domain. This approach divides the domain of interest into smaller subdomains, and the wavefield is computed using a sequential process to determine the downward- and upward-propagating wavefields — hence called a double-sweeping solver. A sequential process becomes possible using a special approximation of the interface conditions between subdomains. This method is incorporated into the least-squares migration framework as an approximate solver. The associated computational effort is comparable to one-way wave-equation approaches, yet, as illustrated by the numerical examples, the accuracy and convergence behavior are comparable to that of the full-wave equation.}, number={3}, journal={GEOPHYSICS}, author={Eslaminia, Mehran and Elmeliegy, Abdelrahman M. and Guddati, Murthy N.}, year={2023}, pages={S131–S141} }
 @article{eslaminia_elmeliegy_guddati_2022, title={Full waveform inversion through double-sweeping solver}, volume={453}, ISSN={["1090-2716"]}, url={https://doi.org/10.1016/j.jcp.2021.110914}, DOI={10.1016/j.jcp.2021.110914}, abstractNote={An efficient method is proposed to accurately approximate the gradient and the Hessian operator for the full-waveform inversion (FWI) in large-scale problems. The key idea is an approximate solver called double-sweeping solver, which divides the domain into smaller slabs and sequentially solves the wavefields through a downward and an upward sweeping. The sequential solution is facilitated by approximating the continuity conditions that suppress the multiples, thus relaxing long-range coupling between the subdomains. The double-sweeping solver is incorporated into an inexact Gauss-Newton approach to perform FWI, where the gradient and the Hessian vector multiplication are computed more efficiently. Through numerical experiments, we show that the convergence of FWI with respect to the number of iterations does not degrade when the double-sweeping approximation is used. Given that the double-sweeping solver is computationally cheaper than full-wave simulation, the proposed method is more efficient than the standard FWI. This paper contains the complete formulation of the proposed methodology as well as an illustration of its effectiveness to problems of varying complexity including the inversion of the Marmousi model from the Geophysics community.}, journal={JOURNAL OF COMPUTATIONAL PHYSICS}, publisher={Elsevier BV}, author={Eslaminia, Mehran and Elmeliegy, Abdelrahman M. and Guddati, Murthy N.}, year={2022}, month={Mar} }
 @article{eslaminia_guddati_2016, title={Fourier-finite element analysis of pavements under moving vehicular loading}, volume={17}, ISSN={["1477-268X"]}, DOI={10.1080/10298436.2015.1007237}, abstractNote={With the goal of predicting progressive pavement distress (damage and rutting) under millions of cycles of moving vehicular loading, an efficient analysis framework is developed by combining the ideas of Fourier transform, finite element discretisation and time-scale separation. Using the simple observation of time-scale separation between evolution of pavement damage/rutting, temperature variation and traffic load variation, the analysis under millions of cycles is reduced to a few hundred analyses of stress and strain evolution under a single cycle of moving load. A new method called Fourier-finite element (FFE) method is proposed for each independent stress analysis. Essentially, Fourier analysis is used to eliminate the time dimension as well as the spatial dimension in the direction of traffic, reducing the problem to a set of two-dimensional problems, which are in turn solved using the finite element method (FEM). The FFE method is more efficient than direct three-dimensional (3D) FEM by orders of magnitude, but captures the 3D effects in an accurate manner. The FFE stress analysis technique is combined with time-scale separation-based ideas to develop a pavement performance modelling framework. A 20-year pavement simulation is presented to illustrate the efficiency of the proposed framework.}, number={7}, journal={INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING}, author={Eslaminia, Mehran and Guddati, Murthy N.}, year={2016}, month={Aug}, pages={602–614} }
 @article{park_eslaminia_kim_2014, title={Mechanistic evaluation of cracking in in-service asphalt pavements}, volume={47}, ISSN={["1871-6873"]}, DOI={10.1617/s11527-014-0307-6}, number={8}, journal={MATERIALS AND STRUCTURES}, author={Park, Hong Joon and Eslaminia, Mehran and Kim, Y. Richard}, year={2014}, month={Aug}, pages={1339–1358} }
 @article{shahba_attarnejad_eslaminia_2012, title={Derivation of an efficient non-prismatic thin curved beam element using basic displacement functions}, volume={19}, number={2}, journal={Shock and Vibration}, author={Shahba, A. and Attarnejad, R. and Eslaminia, M.}, year={2012}, pages={187–204} }
 @article{attarnejad_shahba_eslaminia_2011, title={Dynamic basic displacement functions for free vibration analysis of tapered beams}, volume={17}, number={14}, journal={Journal of Vibration and Control}, author={Attarnejad, R. and Shahba, A. and Eslaminia, M.}, year={2011}, pages={2222–2238} }