The properties of the response function and the fluctuation dissipation relation in phase-ordering systems are discussed. These issues are shown to be highly nontrivial even in the relatively simple case of coarsening dynamics considered here. It is discussed how the connection between statics...

Traffic examples from vehicular systems to socio- and micro-biological systems are used to illustrate features relevant for modelling. After some comments on linear flow the emphasis turns to collective traffic flow, as it is captured by driven lattice-based excluding-particle models. An...

Some economists (Mirowski, 2002) have asserted that the neoclassical economic model was motivated by Newtonian mechanics. This viewpoint encourages confusion. Theoretical mechanics is firmly grounded in reproducible empirical observations and experiments, and provides a very accurate description...