Design of reliable software in distributed systems using the conversation scheme
IEEE Transactions on Software Engineering - Special issue on reliability and safety in real-time process control
Petri nets in software engineering
Advances in Petri nets 1986, part II on Petri nets: applications and relationships to other models of concurrency
Implementation of the Conversation Scheme in Message-Based Distributed Computer Systems
IEEE Transactions on Parallel and Distributed Systems
Using Petri Nets for the Design of Conversation Boundaries in Fault-Tolerant Software
IEEE Transactions on Parallel and Distributed Systems
A tale of two case studies: using integrated methods to support rigorous requirements specication
Methods'96 Proceedings of the 1996 international conference on Methods Integration
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In the conversation design procedure, the definition of the state of the system is one of the most important aspects. The question is how to identify transitions in Occam programs in order to express them as Petri nets. In the paper, a simplified transition identification method is proposed. Using the robot arm control program of A.M. Tyrrell and D.J. Holding it is shown that the correspondent Petri net graph is simpler than theirs, but the communication state change table is the same. It is also shown that these two methods are equivalent