Colored Petri Nets (CPN) are a powerful, recognized and intuitive modelling tool. They allow a precise representation of distributed, embedded and/or real time systems. These models can be then used among others for the dependability assessment. This paper develops a new method of CPN analysis called the Backward reachability. It provides information about different ways of reaching a particula...

In architectures of parallel computing system, which has a large number of processing nodes, communication overhead is an important metric to evaluate and minimize by improving computation speedup solutions. In this paper, we propose using Stochastic Colored Petri Net to give models of parallel computing multi-processing systems for analyzing and evaluating effectiveness of communication overhe...

This paper presents the process-oriented aspects of a formal and visual agent-based business process modeling language. The language is of use for (networks of) organizations that elect or envisage multi-agent systems for the support of collaborative business processes. The paper argues that the design of a collaborative business process should start with a proper understanding of the work prac...

This paper discusses an extension of our previous work (Saitou, 1998) on robustness optimization of flexible manufacturing systems (FMS) that undergo forecasted production plan variations. The extension is made to a more general class of FMS performing “non-linear” or “cyclic” production that allows multiple operation types per one machine type. As in our previous work (Saitou, 1998), a configu...

Distributed{memory multithreaded multiprocessors are composed of a number of (multithreaded) processors, each with its memory, and an interconnecting network. The long memory latencies and synchronization delays are tolerated by context switching, i.e., by suspending the current thread and switching the processor to another `ready' thread provided such a thread is available. Because of very sim...

due to the changes which may occur in their parameters, systems are usually demonstrated by some subsystems for different conditions. this paper employs modified petri nets (mpn) to model theses subsystems and makes it simple to analyze them. in this method, first, the continuous transfer function is converted to a discrete transfer function and then, by mpn, system is modeled and analyzed. all...

The last decade has witnessed an increasing transformation in the design, engineering, and mining of processes, moving from a pure control-flow perspective to more integrated models where also data and decisions are explicitly considered. This calls for methods and techniques able to ascertain the correctness of such integrated models. Differently from previous approaches, which mainly focused ...

This paper introduces a formal metamodel for the specification of security policies for workflows in online service systems designed to be suitable for the modeling and analysis of complex business-related rules as well as traditional access control. A translation of the model into a colored Petri net is shown and an example of policy for an online banking system is described. By writing predic...