Multi-stem mechanised harvesting operation analysis : application of discrete-event simulation

ion of a real world system is achieved through identifying and incorporating into the model only the dominant and/or relevant factors that control the real world system’s behaviour (Taha, 2003). Through this, the real world system can be represented to an acceptable degree of accuracy. Models vary in the degree to which they represent reality. Isomorphic models comprise an exact agreement between the elements of the model and the object itself. Exact relationships and interactions between the elements are preserved in these models. Homomorphic models are similar to the real system in form, but different in fundamental structure. This difference can be attributed to abstraction in representation. Simulation models are homomorphic, but the degree of isomorphism (extent to which the model agrees with reality) needs to be stated and tested if conclusions from the model are to be drawn. This process is known as model validation (Banks, 1998). Real World System Assumed Real World System Model

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