Roughness distributions of 1+1 dimensional noisy Kuramoto-Sivashinsky(KS) equation at steady states are obtained and compared with Kardar-Parisi-Zhang(KPZ) equation's with numerical simulation.It is shown that the scaling functions of roughness distributions of the noise KS equation in 1+1 dimensions show small finite-size effects.They are in good agreement with the Kardar-Parisi-Zhang(KPZ) equation's.

1+1 dimensional Wolf-Villain model for molecular-beam epitaxy(MBE) growth is investigated with kinetic Monte-Carlo simulation in large scale and during long growth time so that crossover effects are eliminated.Global and local dynamic exponents are obtained.It is shown that Wolf-Villain model in 1+1 dimensions exhibits intrinsic anomalous scaling behavior in time and length simulated.The result is inconsistent with theoretical analysis by López.