Mahdi Ghafariasl’s Post

Exciting News! I am thrilled to share that our latest paper on "Optimizing convergence: GMRES preconditioner for Darcy flow problem in a fracture network" has been published! In this work, we explore the effectiveness of GMRES preconditioners in solving linear equations with block structures, commonly arising in unfitted finite element discretizations of Darcy flow problems in fracture networks. Our research demonstrates the efficiency of these preconditioners through spectral analysis and numerical experiments, highlighting their potential in accelerating solutions for complex problems. Read the full paper here: https://lnkd.in/ehciTVTM

My recent review paper about quantized vortices of Bose-Einstein condensates confined in spatially curved configurations. The paper has been written in collaboration with two excellent scientists: Andrea Tononi and Alexander Yakimenko. 😀

📣We are delighted to share that we have a paper📜 out on "Dynamics and condensation of polaritons in an optical nanocavity coupled to two-dimensional materials" in Physical Review B. Find the link in the comment field 👇 We investigate how light and matter interact in an optical nanocavity coupled with a two-dimensional material, focusing on the strong coupling regime🔆This interaction breaks the translational symmetry of excitons in the 2D structure and creates a localised polariton state. Using a novel approach, we develop a model to understand how this state emerges and evolves. Our work reveals how cavity size and temperature influence the system's behaviour, offering valuable insights into strong coupling dynamics in highly confined systems⚡ The paper is authored by NanoPhoton - Center for Nanophotonics member Maria Vittoria Gurrieri and co-authored by Emil Denning and NanoPhoton - Center for Nanophotonics members Kristian Seegert, Philip Kristensen and Jesper Mørk.

A new technical paper titled “Dual-Layer Thin-Film Transistor Analysis and Design” was published by Oregon State Professor Emeritus John Wager and researchers from Applied Materials. https://bit.ly/3AIyBxV

One of the three pre-conference courses at the International Modal Analysis Conference that will be held in Orlando, FL on February 10-13, 2025 is entitled Modal Domain Approaches for Nonlinear Identification and Analysis in Industry. The course will be given by Ben Pacini (Sandia National Laboratories), Matt Allen (BYU) and myself. The course is designed for practicing engineers, students and faculty interested in better understanding nonlinear structural dynamics and employing experimental methods to characterize them. For more information: https://lnkd.in/d5p9PR8C

📚 Getting to the end of my Ph.D. publications. This is my fourth article, in which we go into exact details on the Curved Boundary Integral Method and how it works near and at the source points, avoiding singularities. ✨ Our method offers improved performance compared to Physical Optics near and at the source surface. Both methods are derived from the Stratton-Chu equation. 🔗 Check it out here: https://lnkd.in/d-qRbKvh

Thrilled to announce that our research paper on pile-up crash severity analysis has been published in the Safety journal! This study delves into the complexities of pile-up crashes, which involve multiple collisions between more than two vehicles in a short span of time. We focused on analyzing real-time traffic, environmental factors, and crash characteristics, using crash and real-time traffic data from Iran's Sub-urban freeways over a 5-year period. Through ensemble machine learning and Shapley Additive Explanations, we identified the key factors contributing to severe pile-up crashes. This paper is part of my PhD thesis, and it wouldn't have been possible without the guidance and support of my PhD supervisor, Professor Kayvan Aghabayk, and the invaluable insights from Professor Alfonso Montella from the University of Naples Federico II. For access to the full paper, please visit: https://lnkd.in/eSRgfW7D

Hello everyone! I am excited to announce the publication of my first journal paper, "Reachable Sets of Homogeneous Polynomial Dynamical Systems using Exact Solutions" in the IEEE Control Systems Letters. This work was written under the guidance of Prof. Ram Vasudevan from the University of Michigan and Prof. Can Chen from the University of North Carolina at Chapel Hill. This work presents a novel method for generating reachable sets of homogeneous polynomial dynamical systems using their exact solutions derived from tensor theory. This method performs better than available reachable set-generating frameworks for general dynamical systems. This work can be found at: https://lnkd.in/g8qMGhD6 The GitHub repository can be found at: https://lnkd.in/gvpyi536

I am excited to share our latest publication in the International Journal for Numerical and Analytical Methods in Geomechanics! In this paper, we present a comprehensive computational model for analyzing thermo-hydro-mechanical coupled processes in unsaturated porous media under frost actions. Special thanks to my supervisor, Professor Biao Li, for his invaluable guidance and support throughout this research. Read the full paper here: https://lnkd.in/e65rjqCE