Abstract:The determination of cognitive behavior mode (CBM) is studied and a probabilistic method to determine CBM is proposed. Firstly, the SRK framework of CBM is introduced briefly. Characteristics of three CBM types (skill-based, rule-based and knowledge-based) are analyzed. The applications of SRK framework in human reliability analysis (HRA) are reviewed. Secondly, the CBM determination method, Hanaman decision tree, is outlined, which strengths and weaknesses are respectively pointed out. It is emphasized that it is extremely necessary to consider uncertainties in the CBM determination process. Thirdly, the uncertainties are categorized into four groups, which are crew, system, task and environment. On the basis of this taxonomy, the influence factors of CBM in Hanaman decision tree are analyzed, and their uncertainties resources are presented. Lastly, the probability is introduced into the CBM determination and a new method to determine CBM is constructed, in which the probability and Hanaman decision tree are synthesized. Because this method has considered uncertainties in the CBM determination process, it has more extensive application in HRA. |