  Effective star formation rates in tabular form are computed which yield a
prescription for the star formation activity in model galaxies as a function of
ambient density, metallicity, and stellar feedback. The effects of supernova
explosions on the thermal balance of the Interstellar Medium (ISM) and the
presence of a multi-phase ISM are explicitly included. The resulting grid of
models can be implemented easily in N-body codes for the computation of star
formation processes in merging galaxies and cosmological simulations.
