システムの失敗を利用したソフトなシステム方法論

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  • A ‘Soft’ Systems Methodology Utilizing Information Obtained from Systems Failures
  • システム ノ シッパイ オ リヨウシタ ソフト ナ システム ホウホウロン
  • A ^|^lsquo;Soft^|^rsquo; Systems Methodology Utilizing Information Obtained from Systems Failures

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In large-scale systems, systems failures mean not only physical failures but include failures in decision making proress. The systems failures can't be perfectly prevented in design level, so that it is desirable that the system improves itself by using information obtained from the occurred failures in operation level. To realize such a self-improvement process, we propose a ‘soft’ systems methodology for manmachine systems which consist of a engineering system and its management system.<br>The systems methodology is based on adaptive maintenance which is a kind of metasystem approach. The adaptive maintenance is an adaptive process to improve the inadequate cognitive model which is inconsistent for the real states. We discuss some adaptation properties of this maintenance and show that the internal adaptive process irrelevant to the changes of environment is indispensable to obtaining an adequate model, in addition to the external one for the changes. According to the proposed systems methodology, man-machine systems may develop through the adaptive maintenance that form a positive feedback.<br>The methodology is introduced by goal seeking model in consideration of systemic properties and satisfactory principle of evaluation so that it is also applicable to general control systems.

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