Before revision: Networks of planar Hamiltonian systems closely resemble Hamiltonian system in R^{2n}, but with the canonical equation for one of the variables in each conjugate pair rescaled by a number called the Turing instability parameter.
After revision: Certain dissipative physical systems closely resemble Hamiltonian system in R^{2n}, but with the canonical equation for one of the variables in each conjugate pair rescaled by a number called the Turing instability parameter.