Now showing items 1-11 of 11

• #### 1D Painless Multi-level Automatic Goal-Oriented h and p Adaptive Strategies Using a Pseudo-Dual Operator ﻿

(2022-01-01)
The main idea of our Goal-Oriented Adaptive (GOA) strategy is based on performing global and uniform h- or p-refinements (for h- and p-adaptivity, respectively) followed by a coarsening step, where some basis functions are ...
• #### An Agent-Oriented Hierarchic Strategy for Solving Inverse Problems ﻿

(2015-12-31)
The paper discusses the complex, agent-oriented hierarchic memetic strategy (HMS) dedicated to solving inverse parametric problems. The strategy goes beyond the idea of two-phase global optimization algorithms. The global ...
• #### Dimensionally adaptive hp-finite element simulation and inversion of 2D magnetotelluric measurements ﻿

(2016-09-01)
Magnetotelluric (MT) problems often contain different subdomains where the conductivity of the media depends upon one, two, or three spatial variables. Traditionally, when a MT problem incorporates a three-dimensional (3D) ...
• #### $hp$-Adaptive Simulation and Inversion of Magnetotelluric Measurements ﻿

(2015-12-18)
The magnetotelluric (MT) method is a passive exploration technique that aims at esti- mating the resistivity distribution of the Earth’s subsurface, and therefore at providing an image of it. This process is divided into ...
• #### Magnetotelluric characterization of the alhama de murcia fault (Eastern Betics) - Preliminary results ﻿

(2016-12-31)
The Lorca Earthquake (11/5/2011, Mw 5.2) stands as the most destructive in Spain over the last 50 years. It was interpreted as having occurred in an intersegment zone of the strike-slip Alhama de Murcia Fault (AMF). Within ...
• #### Multi-objective hierarchic memetic solver for inverse parametric problems ﻿

(2015-12-31)
We propose a multi-objective approach for solving challenging inverse parametric problems. The objectives are misfits for several physical descriptions of a phenomenon under consideration, whereas their domain is a common ...
• #### A multi-objective memetic inverse solver reinforced by local optimization methods ﻿

(2016-09-01)
We propose a new memetic strategy that can solve the multi-physics, complex inverse problems, formulated as the multi-objective optimization ones, in which objectives are misfits between the measured and simulated states ...
• #### Quantities of interest for surface based resistivity geophysical measurements ﻿

(2015-12-31)
The objective of traditional goal-oriented strategies is to construct an optimal mesh that minimizes the problem size needed to achieve a user prescribed tolerance error for a given quantity of interest (QoI). Typical ...
• #### A Secondary Field Based hp-Finite Element Method for the Simulation of Magnetotelluric Measurements ﻿

(2015-12-31)
In some geophysical problems, it is sometimes possible to divide the subsurface resistivity distribution as a one dimensional (1D) contribution plus some two dimensional (2D) inhomogeneities. Assuming this scenario, we ...
• #### A Simulation Method for the Computation of the E ﻿

(2021-03)
We propose a set of numerical methods for the computation of the frequency-dependent eff ective primary wave velocity of heterogeneous rocks. We assume the rocks' internal microstructure is given by micro-computed tomography ...
• #### Using Covariance Matrix Adaptation Evolutionary Strategy to boost the search accuracy in hierarchic memetic computations ﻿

(2019-04)
Many global optimization problems arising naturally in science and engineering exhibit some form of intrinsic ill-posedness, such as multimodality and insensitivity. Severe ill-posedness precludes the use of standard ...