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Object-Based Modeling and Simulation: What, Why, and How

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:   No Citation available.
Authors:   Tania R Lanphere, Robert Kok
Keywords:   Ecological modeling, Object-based modeling

In an object-based model each component is represented as a discrete entity. The spatial resolution of the model can be set at any desired level and thus describe a given system in many different ways. The sophistication of the model can be determined by adjusting number of attributes used to describe each object. Relationships between objects are described with rule based expressions, and the combined activities of all the objects give rise to the global dynamics of the system. To elicit these dynamic, the interaction of the objects is typically acted out in a simulation for a number of equal time intervals under the influence of forcing functions and disturbances (e.g. solar radiation, temperature, rainfall, earthquakes). Object-based modeling has both advantages and disadvantages, and thus is not applicable for all modeling / simulation projects. However, it is very useful for modeling complex systems, both existent and hypothetical, and for investigating general, complex system problems and methods using virtual systems.

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