Search results for "TACL"

A variational inequality approach to the problem of the design of the optimal covering of an obstacle

2005

Experiments on a Prey Predators System

2003

The paper describes a prey-predators system devoted to perform experiments on concurrent complex environment. The problem has be treated as an optimization problem. The prey goal is to escape from the predators reaching its lair, while predators want to capture the prey. At the end of the 19th century, Pareto found an optimal solutions for decision problems regarding more than one criterion at the same time. In most cases this ‘Pareto-set’ cannot be determined analytically or the computation time could be exponential. In such cases, evolutionary Algorithms (EA) are powerful optimization tools capable of finding optimal solutions of multi-modal problems. Here, both prey and predators learn i…

A Projected Algebraic Multigrid Method for Linear Complementarity Problems

2011

We present an algebraic version of an iterative multigrid method for obstacle problems, called projected algebraic multigrid (PAMG) here. We show that classical AMG algorithms can easily be extended to deal with this kind of problem. This paves the way for efficient multigrid solution of obstacle problems with partial differential equations arising, for example, in financial engineering.

On smoothing problems with one additional equality condition

2009

Two problems of approximation in Hilbert spaces are considered with one additional equality condition: the smoothing problem with a weight and the smoothing problem with an obstacle. This condition is a generalization of the equality, which appears in the problem of approximation of a histogram in a natural way. We characterize the solutions of these smoothing problems and investigate the connection between them. First published online: 14 Oct 2010

A Boundary Control Approach to an Optimal Shape Design Problem

1989

Abstract We consider the problem of controlling the coincidence set in connection with an obstacle problem. We shall transform the obtained optimal shape design problem into a boundary control problem with Dirichlet boundary conditions.

Robotic path planning for non-destructive testing – A custom MATLAB toolbox approach

2016

AbstractThe requirement to increase inspection speeds for non-destructive testing (NDT) of composite aerospace parts is common to many manufacturers. The prevalence of complex curved surfaces in the industry provides motivation for the use of 6 axis robots in these inspections. The purpose of this paper is to present work undertaken for the development of a KUKA robot manipulator based automated NDT system. A new software solution is presented that enables flexible trajectory planning to be accomplished for the inspection of complex curved surfaces often encountered in engineering production. The techniques and issues associated with conventional manual inspection techniques and automated s…

Electrostatic backscattering by insulating obstacles

2012

AbstractWe introduce and analyze backscattering data for a three-dimensional obstacle problem in electrostatics. In particular, we investigate the asymptotic behavior of these data as (i) the measurement point goes to infinity and (ii) the obstacles shrink to individual points. We also provide numerical simulations of these data.

QUALITY OF INCLUSIVE EDUCATION, OBSTACLES AND NECESSARY PEDAGOGICAL SOLUTIONS IN WORKING WITH PUPILS WITH AUTISM IN ITALY

2018

Nowadays are increasingly encountered children diagnosed with autism, but there are still serious problems of inclusion of these children in the comprehensive general education system. This is due to various factors. The author of this study many years is working in the schools of special education in Rome, so in the year 2010 started research on inclusion of pupils with autism into the Italian schools. The idea is to transmit the author's knowledge and experience further in Latvia, where inclusion of such pupils into general education schools is still at an early stage because of a lack of both human resources and financial resources, as well in regard of experience and clear understanding…

Is the Spectacled WarblerSylvia conspicillataexpanding northward because of climate warming?

2014

Capsule The Spectacled Warbler shows a strictly Mediterranean distribution which is expected to expand northward in response to climate warming. To test this hypothesis, we defined the regular distribution of the species based on the literature and we tested whether: (1) spring temperatures in this area significantly increased between 1967 and 2010; (2) breeding attempts north of the regular range occurred progressively at northern latitudes. Both of these hypotheses were confirmed, supporting the hypothesis that the species is expanding northward because of climate warming.

Speaking from above and below -The Gospel of John as metaphorical and narrative reference to a distant reality

2018

The one who is from the earth belongs to the earth and speaks from the earth (Jn 3:31). How can one speak from the earth and at the same time about heavenly things? The Fourth Gospel (FG) creates a tension between these two realms of perception and cognition. To reach beyond or above the earth we have to transcend time and space, our individual context and limited visual horizon. To overcome the obstacle of confined space we can rely on metaphors since their key faculty is to transport (μετα-φέρω). To transcend the limitations of time we can recruit the genre of narration. These two modes of references to a reality that is located and dated beyond our realms are at work in the FG. With Rico…