Systems theory in analysis-I: definitions and interpretations in the basic terms of systems theory

The twelve basic terms of systems theory-system, element, relation, function, structure, organization, feedback, Black Box, model, input-output analysis, trial-and-error method, simulation-are given general definitions and are also interpreted in terms of chemical analysis. The distinction between a generally acceptable brief and precise definition and an interpretation peculiar to one particular specialized field avoids, in the case of universally used terms, a biased view and conception. Simple systems are deliberately chosen and the terms used are clarified by means of diagrams. A system-oriented approach is outlined, with feedback-coupled stages (defining the problems, setting the limits, designing the model, simulation) which has proved useful in practical systems analysis and in systems design. The working group will report, in subsequent publications, on specific analytical systems which are of considerable importance in automation. Those with special interests in these fields are warmly invited to communicate their critical opinions, suggestions, and examples of interpretations based on these definitions.