A three-phase discrete event simulation with EPNSim graphs

Article Abstract:

In the simulation world view, there are three methods of constructing a simulation in common use: event scheduling, process orientation, and activity scanning (or three-phase approach). Because the three-phase approach has advantages of both modeling flexibility and modularity, we propose a simulation modeling tool, EPNSim extended from the ordinary Petri Nets (PNs) to generate a language-independent pseudo code for the three-phase discrete simulation. Using the proposed method, the modeling processes of the three-phase discrete simulation can be concisely represented. In addition, it preserves the relative analytic properties of the original Petri net models (e.g. boundedness, liveliness, etc.), which are important for designing a system. (Reprinted by permission of the publisher.)

Petri nets, Models of Computation, Pseudocode

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Extending resources to multiple busy states in discrete simulation

Article Abstract:

This paper introduces and develops the concept of multiple busy state resources to simplify the process of stratifying statistics associated with resources. Most simulation languages recognize only busy and idle states. In many applications stratification of the busy state statistics is necessary to account for phenomena such as failures, repairs, maintenance, shift capacity changes, and cost tracking. These ideas are demonstrated by way of an implementation in a discrete simulation language. (Reprinted by permission of the publisher.)

Computer aided manufacturing, Modeling, Data modeling software, Simulation Languages, Resource Management, Scientific Research, Statistical Analysis, Computer-Aided Manufacturing

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