Search results for " Turin"
showing 10 items of 26 documents
Intelligenza artificiale
2009
Chemical self-organization in self-assembling biomimetic systems
2009
Abstract Far-from-equillibrium oscillating chemical reactions are among the simplest systems showing complex behaviors and emergent properties. This class of reactions is often employed to mimic and understand the mechanisms of a great variety of biological processes. In this context, pattern formation due to the coupling between reaction and transport phenomena represent an active and promising research area. In this paper, we present results coming from experiments where we tried to blend the structural properties of self-assembled matrixes (sodium dodecyl sulphate micelles and phospholipid bilayers) together with the evolutive peculiarities of the Belousov–Zhabotinsky reaction. A series …
Super-critical and sub-critical bifurcations in a reaction-diffusion Schnakenberg model with linear cross-diffusion
2016
In this paper the Turing pattern formation mechanism of a two components reaction-diffusion system modeling the Schnakenberg chemical reaction is considered. In Ref. (Madzavamuse et al., J Math Biol 70(4):709–743, 2015) it was shown how the presence of linear cross-diffusion terms favors the destabilization of the constant steady state. We perform the weakly nonlinear multiple scales analysis to derive the equations for the amplitude of the Turing patterns and to show how the cross-diffusion coefficients influence the occurrence of super-critical or sub-critical bifurcations. We present a numerical exploration of far from equilibrium regimes and prove the existence of multistable stationary…
The Life, Death and Miracles of Alan Mathison Turing
2010
The life of Alan Turing is described in many biographies. The best and most encyclopaedic of these is that of Andrew Hodges; quite pleasant is the agile volume by Gianni Rigamonti, Turing, il genio e lo scandalo (Flaccovio editore, Palermo, 1991). Both of these also make mention of his tragic end, which certainly casts a shadow on the mores English society at the time; but of course, who knows how other societies might have behaved?
Vita, morte e miracoli di Alan Mathison Turing
2007
La vita di Turing si puo leggere in molte biografie: ottima ed enciclopedica quella di Andrew Hodges (pubblicata in Italia da Bollati Boringhieri); molto piacevole l’agile libretto di Gianni Rigamonti, Turing, il genio e lo scandalo (Flaccovio editore, Palermo, 1991). In entrambi i libri si possono anche trovare cenni alla sua tragica fine, della quale la societa inglese di quel tempo non puo certo menar vanto; ma chissa come si sarebbero comportate altre societa.
Io Robot, la (fanta)scienza e le altre
2009
Presentazione in termini accessibili a un vasto pubblico di alcuni problemi centrali della robotica, l'intelligenza atificiale, la teoria della calcolabilità con cenni alla vita di A. M. Turing.
Dynamics of Pattern Formation in Biomimetic Systems
2008
This paper is an attempt to conceptualize pattern formation in self-organizing systems and, in particular, to understand how structures, oscillations or waves arise in a steady and homogenous environment, a phenomenon called symmetry breaking. The route followed to develop these ideas was to couple chemical oscillations produced by Belousov-Zhabotinsky reaction with confined reaction environments, the latter being an essential requirement for any process of Life. Special focus was placed on systems showing organic or lipidic compartments, which represent more reliable biomimetic matrices.
The role of local and regional authorities in the implementation of the european social charter
2018
URL del artículo en la web de la Revista: https://www.upo.es/revistas/index.php/lex_social/article/view/3475/2749 Le présent article met l¿accent sur le fonctionnement et les avantages des deux mécanismes de contrôle de la Charte sociale européenne (système de rapports et procédure de réclamations collectives) en termes de progrès réalisés par les États Parties dans le domaine des droits sociaux avec une action primordiale des collectivités locales et régionales, permettant ainsi de forger une conscience européenne plus solide « par le bas ». En ce sens, dans le cadre du « Processus de Turin » pour la Charte sociale européenne, les collectivités territoriales peuvent exercer une influence p…
Ultrametric Finite Automata and Turing Machines
2013
We introduce a notion of ultrametric automata and Turing machines using p-adic numbers to describe random branching of the process of computation. These automata have properties similar to the properties of probabilistic automata but complexity of probabilistic automata and complexity of ultrametric automata can differ very much.
Quantum Real - Time Turing Machine
2001
The principles of quantum computation differ from the principles of classical computation very much. Quantum analogues to the basic constructions of the classical computation theory, such as Turing machine or finite 1-way and 2-ways automata, do not generalize deterministic ones. Their capabilities are incomparable. The aim of this paper is to introduce a quantum counterpart for real - time Turing machine. The recognition of a special kind of language, that can't be recognized by a deterministic real - time Turing machine, is shown.