In this paper, a new algorithm for studying elastic wave propagation in the phononic crystals is presented. At first, the displacement-based forms of elastic wave equations are derived and then the forms are discretized using finite difference method. So the new algorithm is called the displacement-based finite difference time domain (DBFDTD). Three numerical examples are computed with this met...

This note addresses the following shape matching problem: given a ‘template’ shape, numerically described by means of a computational mesh, and a ‘target’ shape, known only via a signed distance function to its boundary, we aim at deforming iteratively the mesh of the template shape into a computational mesh of the target shape. To achieve this goal, we rely on techniques from shape optimizatio...

In this paper, the authors propose an adaptive Elastic Net method for edge linking of images. Edge linking is a fundamental computer-vision task, which is a constrained optimization problem. In the proposed method, an adaptive dynamic parameter strategy and a stochastic noise strategy are introduced into the Elastic Net, which enables the network to have superior ability for escaping from local...

A new method is proposed for integrating the equations of motion of an elastic filament. In the standard finite-difference and finite-element formulations the continuum equations of motion are discretized in space and time, but it is then difficult to ensure that the Hamiltonian structure of the exact equations is preserved. Here we discretize the Hamiltonian itself, expressed as a line integra...

Complete List of Authors: Cheesman, Tom; Swansea University, Arts and Humanities Flanagan, Kevin; Swansea University, Arts and Humanities; SDL Thiel, Stephan; Bauhaus University; Studio Nand Rybicki, Jan; Jagiellonian University S.Laramee, Robert; Swansea University, Computer Science Hope, Jonathan; University of Strathclyde, English Roos, Avraham; University of Amsterdam, Centre for Digital Hu...

The Cattell-Horn-Carroll (CHC) Cross-Battery Assessment approach (hereafter referred to as the XBA approach) was introduced by Flanagan and her colleagues in the late 1990s (Flanagan & The XBA approach provides practitioners with the means to make systematic, valid, and up-to-date interpretations of intelligence batteries and to augment them with other tests in a way that is consistent with the...

In this paper an overview is given of the space-time discontinuous Galerkin finite element method for the solution of the Euler equations of gas dynamics. This technique is well suited for problems which require moving meshes to deal with changes in the domain boundary. The method is demonstrated with the simulation of the elastic deformation of a wing in subsonic and transonic flow.