The commonest assumption in compartmental modeling is that material in a homogeneous compartment behaves exponentially. The typical Ecolego model is a compartmental model which requires a solver of differential equations. Pharmacokinetic modelling is performed by noncompartmental or compartmental methods. These approaches include both compartmental models and agent-based models. It is of a unique compartmental brutalism architecture. The 1920s saw the emergence of compartmental models. The construction of a gamma camera is sometimes known as a compartmental radiation construction. Compartmental models simplify the mathematical modelling of infectious diseases. For more information, see Compartmental models in epidemiology. For peripheral operations, eight Compartmental Directions were created. Compartmental methods estimate the concentration-time graph using kinetic models. Compartmental PK analysis uses kinetic models to describe and predict the concentration-time curve.