In science, a process is every sequence of changes of a real object/body which is observable using scientific method. Therefore, all sciences analyse and model processes. Processes are always properties of dynamic systems, they are characterized by such system attributes as variables and parameters. Every process model has distinguished input and output variables, it can be autonomous or controlled. The recognition of a process is an arbitrary subjective mental operation/event because it depends on different circumstances, observer's goal, perception and conceptualization tools.
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