Titlebook: Justifying the Dependability of Computer-based Systems; With Applications in Pierre-Jacques Courtois Book 2008 Springer-Verlag London 2008

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Pierre-Jacques CourtoisProvides a framework for the justification of the dependability of a computer system.Author is a consultant to the OECD and the IAEA and has published over 100 papers on computers and communications i

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Introductionplex, poorly understood and, as a result, often not efficiently mastered by regulators, licensees and suppliers; “Understanding Computer System Dependability” might have been a more appropriate title for this work..The difficulties – some are devilishly complex – are both practical and theoretical.

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Current Practices They may condition the approval on the provision of evidence that a set of rules, laws, standards, design criteria, (or even sometimes “beliefs”! [13]) is complied with. They may condition their approval on the success of a pre-defined method, such as the so-called “Three Leg” approach advocated in

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Justification and Dependability Casehe true mathematical sense is likely to be beyond reach..A further distinction is necessary between . and .. The justification framework presented here provides a method to organize and structure technical claims supported by technical arguments using technical factual evidence. The framework does n

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Requirements, Claims and Evidence1]. This common sense advice takes on a special meaning in the context of dependability, because the point of departure of the justification is also its destination. We regard a . as the set of arguments and evidence components which support a carefully selected set of requirements addressing the de

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Axiomatic Principles and Limitse discussion of axiomatic principles until some of the most important syntactical and semantics concepts have been introduced..The justification of the dependability of a real system is based, like other disciplines, on general accepted principles and assumptions that are most of the time considered

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Structures and Interpretationsritory of models and interpretations and is vast and full of ambushes. In many places, the previous chapters indicated that, in addition to relying on multi-level and disparate evidence, the justification of the dependable behaviour of a computer system critically depend on truthful models of the re

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