In this book, continuum models of re-entrant production systems are developed that treat the ow of products in analogy to traffic ow. Specifically, the dynamics of material ow through a re - entrant factory via a parabolic conservation law is modeled describing the product density and ux in the factory. The basic idea underlying the approach is to obtain transport coefficients for uid dynamic models in a multiscale setting simultaneously from Monte Carlo simulations and actual observations of the physical system, i.e. a production factory. Since partial differential equation (PDE) -...