Figure 4From: Discriminating between rival biochemical network models: three approaches to optimal experiment designThree distinctive input profiles S = S 0 + u. Basal input S0 perturbed until time 60 by a step function (a), a sine function (b), or a square wave function (c). ||u||2 = 1 in all cases. In (b) and (c) the frequency is 0.3853, the critical frequency corresponding to the single output R*.Back to article page