The idea of “species” is the main unit for representing ecological relations. But what would an ecology look like if we started by tracing its relations from below species threshold? By deploying infraspecies ethnography, I show how, in suburban Barcelona, human and wild boar individuals relate personal, creative ways, how doing so, they also reshape their quotidian ecologies bottom up. Departi...

Reversible computing allows one to execute programs both in the standard, forward direction, and backward, going back to past states. In a concurrent scenario, the correct notion of reversibility is causal-consistent reversibility: any action can be undone, provided that all its consequences (if any) are undone beforehand. In this paper we present an overview of the main approaches, results, an...

Bennett has shown how to simulate arbitrary forwards-only computations by fully reversible computation. In particular he has given a space-efficient linear time simulation. After describing a different lineartime reversible simulation with improved space efficiency, we initiate the study of real-time simulations. In addition to being linear-time, these must offer continuous progress, meaning th...

Data hiding is one of the most important techniques for protecting communications in the Internet. It provides a secure method to distribute data through a public and unsafe channel. In this paper, we studied different data hiding methods. These methods were classified into two groups according to their reversibility; and finally, after arguing on each group based on their different features, w...