Searching all the configurations C′ such that produce a given configuration C, or, in other words, computing backwards in Membrane Computing is an extremely hard task. The current approximations are based in heavy hand-made calculus by considering the specific features of the given configuration. In this paper we present a general method for characterizing all the configurations C′ such that pr...

Audio carriers are subject to a fast and irreversible decay. In order save valuable historical recordings, the audio signal other relevant information can be extracted from source document stored on another medium, normally redundant digital storage system. This procedure is called ’content transfer’. It costly time-consuming procedure. There several solutions with which cost reduced. One consi...

Ants often walk backwards to drag large prey to their nest. New experiments show how they can use information from retinotopically encoded views to follow visual routes even while moving backwards. The mechanisms enabling ants to decouple body orientation and the control of travel direction are likely to be shared with other, flying, insects.