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    <title>An Approach to Distributed Modeling</title>
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    <abstract>Many works on analyzing the behavior of complex systems are based on building large-scale integrated models and sequentials using decomposition and aggregation procedures. In this paper an approach is described which permits to investigate a set of linked subsystems without explicitly building any integrated model. 

This approach based on the &apos;smooth&apos; version of the Sequential Unconstrained Minimization Techniques (SUMT) can be considered from a mathematical point of view as a realization of the &apos;general decomposition scheme&apos; (Orchard-Hays 1968). 

Section 1 describes the statement of the problem; Section 2 gives a general description of the idea of the SUMT; Section 3 contains the conditions of applicability of the approach; and in Section 4 we give a short description of the practical realization and computer testing of this method for a case of linking two submodels of a health care system.</abstract>
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