Modeling resource-centric services for service adaptation in cyber physical systems

The strategic application domains of Cyber Physical Sys- tems (CPS) include health care, transportation, manage- ment of large-scale physical infrastructures, and power plants. In all these applications the systems need to adapt, depend- ing upon the availability of reliable resources, in order to provide trustworthy services at every context of its execu- tion. Hence, CPS is viewed as a large distributed system of service and supply chain management, in which services are resource-centric. For service adaptation, resource qual- ity and availability are determining factors, especially dur- ing emergencies. In this paper an abstract service-oriented description of CPS is given with emphasis on resource and service providers and requesters, the context space created by them is defned, and adaptation rules that arise from the context constraints and contracts defined by them are explained.