An improved safety analysis based on the causality diagram for the complex system of micro aero-engines is presented.The study is examined by using the causality diagram in analytical failure cases due to rupture or p...An improved safety analysis based on the causality diagram for the complex system of micro aero-engines is presented.The study is examined by using the causality diagram in analytical failure cases due to rupture or pentration in the receiver of micro turbojet engine casing,and the comparisons are also made with the results from the traditional fault tree analysis.Experimental results show two main advantages：（1）Quantitative analysis which is more reliable for the failure analysis in jet engines can be produced by the causality diagram analysis;（2）Graphical representation of causality diagram is easier to apply in real test cases and more effective for the safety assessment.展开更多
Causality Diagram (CD) is a new graphical knowledge representation based on probability theory. The application of this methodology in the safety analysis of the gas explosion in collieries was discussed in this paper...Causality Diagram (CD) is a new graphical knowledge representation based on probability theory. The application of this methodology in the safety analysis of the gas explosion in collieries was discussed in this paper, and the Minimal Cut Set, the Minimal Path Set and the Importance were introduced to develop the methodology. These concepts are employed to analyze the influence each event has on the top event ? the gas explosion, so as to find out about the defects of the system and accordingly help to work out the emphasis of the precautionary work and some preventive measures as well. The results of the safety analysis are in accordance with the practical requirements; therefore the preventive measures are certain to work effectively. In brief, according to the research CD is so effective in the safety analysis and the safety assessment that it can be a qualitative and quantitative method to predict the accident as well as offer some effective measures for the investigation, the prevention and the control of the accident.展开更多
目的探讨根本原因分析(Root cause analysis,RCA)方法在医院患者满意度管理中的作用。方法应用RCA方法对广东省某三甲医院2019年第三方门诊和住院患者满意度调查中满意度较低的问题进行分析,查找重要原因,制定针对性的改进对策。结果通...目的探讨根本原因分析(Root cause analysis,RCA)方法在医院患者满意度管理中的作用。方法应用RCA方法对广东省某三甲医院2019年第三方门诊和住院患者满意度调查中满意度较低的问题进行分析,查找重要原因,制定针对性的改进对策。结果通过RCA方法找到导致医院卫生间清洁、空间布局及路标指示、挂号体验、出入院信息及手续等患者满意度低的重要原因,提出了有效的改进对策。结论RCA是帮助管理者提高患者满意度管理水平的有效方法,能够在医院服务质量持续改进中发挥积极作用。展开更多
文摘An improved safety analysis based on the causality diagram for the complex system of micro aero-engines is presented.The study is examined by using the causality diagram in analytical failure cases due to rupture or pentration in the receiver of micro turbojet engine casing,and the comparisons are also made with the results from the traditional fault tree analysis.Experimental results show two main advantages：（1）Quantitative analysis which is more reliable for the failure analysis in jet engines can be produced by the causality diagram analysis;（2）Graphical representation of causality diagram is easier to apply in real test cases and more effective for the safety assessment.
基金Supported by the Natural Science Foundation of China (No. 59677009) the National Research Foundation for the Doctoral Program of Higher Education of China (No.99061116)
文摘Causality Diagram (CD) is a new graphical knowledge representation based on probability theory. The application of this methodology in the safety analysis of the gas explosion in collieries was discussed in this paper, and the Minimal Cut Set, the Minimal Path Set and the Importance were introduced to develop the methodology. These concepts are employed to analyze the influence each event has on the top event ? the gas explosion, so as to find out about the defects of the system and accordingly help to work out the emphasis of the precautionary work and some preventive measures as well. The results of the safety analysis are in accordance with the practical requirements; therefore the preventive measures are certain to work effectively. In brief, according to the research CD is so effective in the safety analysis and the safety assessment that it can be a qualitative and quantitative method to predict the accident as well as offer some effective measures for the investigation, the prevention and the control of the accident.
文摘目的探讨根本原因分析(Root cause analysis,RCA)方法在医院患者满意度管理中的作用。方法应用RCA方法对广东省某三甲医院2019年第三方门诊和住院患者满意度调查中满意度较低的问题进行分析,查找重要原因,制定针对性的改进对策。结果通过RCA方法找到导致医院卫生间清洁、空间布局及路标指示、挂号体验、出入院信息及手续等患者满意度低的重要原因,提出了有效的改进对策。结论RCA是帮助管理者提高患者满意度管理水平的有效方法,能够在医院服务质量持续改进中发挥积极作用。
