Modeling Resource-centric Services for Service Adaptation in Cyber Physical Systems

The strategic application domains of Cyber Physical Systems (CPS) include health care, transportation, management of large-scale physical infrastructures, and power plants. In all these applications the systems need to adapt, depending upon the availability of reliable resources, in order to provide trustworthy services at every context of its execution. 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 quality and availability are determining factors, especially during 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 defined, and adaptation rules that arise from the context constraints and contracts defined by them are explained.