Energy avalanches in a rice-pile model
  We investigate a one-dimensional rice-pile model. We show that the distribution of dissipated potential energy decays as a power law with an exponent $\alpha=1.53$. The system thus provides a one-dimensional example of self-organized criticality. Different driving conditions are examined in order to allow for comparison with experiments. 
Luis A. Nunes Amaral (IFF, Forschungszentrum Juelich) and Kent B.   Lauritsen (CATS, Niels Bohr Inst.)