Our colleague Ana Corrales Paredes presented in June, 11, 2012 her PhD Thesis. Its title is Navigation System Based on Signals for Social Robots. The directors of the thesis were Miguel Ángel Salichs. The examing board was formed by Carlos Balaguer, María Malfaz, Antonio Barrientos, Maritza Bracho and Carlos Cerrada. She got the maximum mark of Sobresaliente Cum Laude.