Experience of practical systems modelling suggests that the key conceptual components of a model of a system are processes, resources, locations, and environment. In recent work, we have given a process- theoretic account of this view in which resources as well as processes are first-class citizens. This process calculus, SCRP, provides a general account of the interaction between resources and processes and, for example, captures the structural aspects of the semantics of the Demos2k modelling tool. Demos2k represents environment stochastically using a wide range of probability distributions and queue-like data structures. Associated with SCRP is a (bunched) modal logic, MBI, which combines the usual additive connectives of Hennessy-Milner logic with their multiplicative counterparts. In this paper, we complete our conceptual framework by adding to SCRP and MBI an account of a notion of location, again as a first-class citizen, that is simple yet sufficiently expressive to capture naturally a wide range of forms of location, both spatial and logical. By way of an example, we also provide a sketch of an extension of the Demos2k tool to incorporate this notion of location. 31 PagesAdditional Publication Information: Submitted to Journal of Logic and ComputationExternal Posting Date: June 21, 2008 [Fulltext].Approved for External PublicationInternal Posting Date: June 21, 2008 [Fulltext]
PDF
download
878987797
028-85220240
