Investigating rare-event failure tolerance: reductions in future uncertainty
نویسندگان
چکیده
At the Computer Assurance COMPASS con ference Voas and Miller presented a technique for as sessing the failure tolerance of a program when the pro gram was executing in unlikely modes with respect to the expected operational pro le In that paper several preliminary algorithms were presented for inverting op erational pro les to more easily distinguish the unlikely modes of operation from the likely modes This paper re nes the original algorithms This paper then demon strates the new algorithms being used in conjunction with a failure tolerance assessment technique on two small programs
منابع مشابه
Overcoming the uncertainty in a research reactor LOCA in level-1 PSA; Fuzzy based fault-tree/event-tree analysis
Probabilistic safety assessment (PSA) which plays a crucial role in risk evaluation is a quantitative approach intended to demonstrate how a nuclear reactor meets the safety margins as part of the licensing process. Despite PSA merits, some shortcomings associated with the final results exist. Conventional PSA uses crisp values to represent the failure probabilities of basic events. This causes...
متن کاملThe Effect of Mindfulness Therapy on Tolerance of Uncertainty and Thought-Action Fusion in Patients with Obsessive-Compulsive Disorder
Background and Purpose: Obsessive-compulsive disorder is a serious disorder that affects psychological, communicative, social, and emotional processes. Accordingly, the present study was conducted with the aim of investigating the effect of mindfulness therapy on tolerance of uncertainty, and thought-action fusion in patients with obsessive-compulsive disorder. Method: This was a semi-experimen...
متن کاملEvent-driven and Attribute-driven Robustness
Over five decades have passed since the first wave of robust optimization studies conducted by Soyster and Falk. It is outstanding that real-life applications of robust optimization are still swept aside; there is much more potential for investigating the exact nature of uncertainties to obtain intelligent robust models. For this purpose, in this study, we investigate a more refined description...
متن کاملTackling uncertainty in safety risk analysis in process systems: The case of gas pressure reduction stations
Industrial plants are subjected to very dangerous events. Therefore, it is very essential to carry out an efficient risk and safety analysis. In classical applications, risk analysis treats event probabilities as certain data, while there is much penurious knowledge and uncertainty in generic failure data that will lead to biased and inconsistent alternative estimates. Then, in order to achieve...
متن کاملReliability Analysis of Underground Pipelines Using Subset Simulation
An advanced Monte Carlo simulation method, called Subset Simulation (SS) for the time-dependent reliability prediction for underground pipelines has been presented in this paper. The SS can provide better resolution for low failure probability level with efficient investigating of rare failure events which are commonly encountered in pipeline engineering applications. In SS method, random sampl...
متن کامل