Figure 4: Examples of results from computer simulations. (a, b) The elastic and viscous moduli are plotted against frequency for three and pairs. Nonlinear least-squares fitting of (15) to the data produced a good fit shown as the line for each pair of and . (c) The parameters estimated from fitting (15) to the simulated data provided a comparison between the used to generate the data and the gamma distribution predicted from the fits. In this case, the predicted gamma distributions are nearly indistinguishable from the original . (d) The survival function, , was also predicted from the parameter estimates and again very closely resembles the original .