QRA

The quantity risk assessment ( QRA) method which can improve the reason of human's behavior is able to quantify the risk in dangerous goods transportation on road, so that the level of risk management can be improved.

提高人类行为的理智性和稳健性、保证人类社会可持续发展的定量风险评价研究，能将道路危险货物运输中的风险准确的予以量化，大大提高道路危险货物运输风险管理水平。

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This paper establishes the mathematical model of quad redundant actuator ( QRA), investigates the force equalization algorithm and carries out the performance degradation simulation and reliability analysis under the first failure and the second failure.

在建立四余度舵机数学模型的基础上，研究了力均衡算法，对四余度舵机一次故障、二次故障情况下的性能降级和可靠性进行了仿真分析。

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Critical points of QRA application in the engineering design of large-scale petrochemical projects

大型石化项目设计应用QRA技术要点

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The results indicate that the optimal equalization algorithm can solve the force fighting effectively, and the QRA can operate at degradation performance continuously under the first failure and the second failure.

仿真结果标明，优化的力均衡算法可以有效解决力纷争的问题，四余度舵机可以在一次故障、二次故障的情况下持续工作。

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The basic principles and general process of quantitative risk analysis ( QRA) for oil and gas pipeline failure were introduced.

介绍了油气管道泄漏事故定量风险评价的基本原则和一般步骤。

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In this thesis, a QRA model of fixed platform is established for analyzing the structure failures induced by the extreme sea loads.

文中主要针对浅海固定式平台结构系统的风险，建立了定量风险评价的模型。

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