Busca avançada
Ano de início
Entree
(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Can the spider hear the position of the prey?

Texto completo
Autor(es):
Kawano, Alexandre [1] ; Morassi, Antonino [2]
Número total de Autores: 2
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Escola Politecn, Av Prof Luciano Gualberto 380, Butantaa 05508010, SP - Brazil
[2] Univ Udine, Polytech Dept Engn & Architecture, Via Cotonificio 114, Udine 33100 - Italy
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: MECHANICAL SYSTEMS AND SIGNAL PROCESSING; v. 143, SEP 2020.
Citações Web of Science: 0
Resumo

Daily experience shows that a spider that stays in the center of an orb-web is able to orient itself immediately toward the prey, and capture it, by testing the web at the contact points of its eight legs. Although this is one of the key aspects in the study of spider behavior, the prey catching problem still remains a mystery to a large extent, and progress has been limited by the lack of two-dimensional models of wave propagation in the orb-web. Here, we formulate the catching problem as the inverse problem of identifying the region of prey's impact in a continuous membrane model of orb-web from dynamic measurements that mimic those made in Nature by a spider. We provide a mathematically-founded answer to this inverse problem by creating a reconstruction algorithm for the determination of the impact prey's region. We find that the amount of information typically assumed to be available by the spider is enough for an accurate identification of the position of the prey, for different prey and orb-web characteristics. (C) 2020 Elsevier Ltd. All rights reserved. (AU)

Processo FAPESP: 17/07189-2 - Comportamento dinâmico de teias de aranha e problemas inversos relacionados
Beneficiário:Alexandre Kawano
Modalidade de apoio: Auxílio à Pesquisa - Pesquisador Visitante - Internacional
Processo FAPESP: 17/06452-1 - Unicidade na identificação de fontes em teias de aranha, vigas contínuas de Euler-Bernoulli e em placas de Germain-Lagrange
Beneficiário:Alexandre Kawano
Modalidade de apoio: Auxílio à Pesquisa - Regular