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有限Fuzzy复数的Fuzzy极限理论
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作者 王立社 《廊坊师专学报》 2000年第3期55-62,共8页
本文引入了三个概念,即有限Fuzzy复数,有限Fuzzy复数的Fuzzy距 离和有限Fuzzy复数的Fuzzy极限,并且讨论了有限Fuzzy复数的Fuzzy极限理论。
关键词 有限Fuzzy复数 Fuzzy距离 Fuzzy极限 根理理论
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Aviation Accident Causation Analysis Based on Complex Network Theory 被引量:11
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作者 YUE Rentian LI Junwei HAN Meng 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI CSCD 2021年第4期646-655,共10页
Accident causation analysis is of great importance for accident prevention.In order to improve the aviation safety,a new analysis method of aviation accident causation based on complex network theory is proposed in th... Accident causation analysis is of great importance for accident prevention.In order to improve the aviation safety,a new analysis method of aviation accident causation based on complex network theory is proposed in this paper.Through selecting 257 accident investigation reports,45 causative factors and nine accident types are obtained by the three-level coding process of the grounded theory,and the interaction of these factors is analyzed based on the“2-4”model.Accordingly,the aviation accident causation network is constructed based on complex network theory which has scale-free characteristics and small-world properties,the characteristics of causative factors are analyzed by the topology of the network,and the key causative factors of the accidents are identified by the technique for order of preference by similarity to ideal solution(TOPSIS)method.The comparison results show that the method proposed in this paper has the advantages of independent of expert experience,quantitative analysis of accident causative factors and statistical analysis of a lot of accident data,and it has better applicability and advancement. 展开更多
关键词 aviation safety accident causation complex network theory grounded theory “2-4”model
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