Based on simulations of simulated sheared glassy systems, we are testing the relationship between the strain rate and "effective temperature," a measure of the disorder of the material's structure. We are currently developing constitutive relationships that will be useful to predict the mechanical response of glass/nanocrystal composite systems.  Metallic glass composites with different crystallite grain sizes (as seen in Figure 1) have been generated based on an EAM potential model. These systems are being compared to solutions of the "shear transformation zone" constitutive model under investigation.