Study of Microcanonical Distributions of Two Different Densities of States Estimated by Wang-Landau Algorithms Wooseop Kwak (Chosun University) We perform the simulation of the Ising model by using Wang-Landau algorithm, and compare the simulation results estimated from the density of state $g(E)$ with histogram $H(E,M)$ with those estimated from the joint density of state $g(E,M)$. We find that the simulation results without using the joint density of states show the biased microcanonical distribution of order parameter.