Human Factors and Reliability Engineering for Safety and Security in Critical Infrastructures by Fabio De Felice & Antonella Petrillo

Author:Fabio De Felice & Antonella Petrillo
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

Availability of procedures and plans: As in the previous input parameter, three fuzzy sets were defined, namely: “Inappropriate”, ‘Acceptable” and “Appropriate”. Their range and their effect are exactly the same as in the above input parameter. The fuzzy sets for the input variable “Adequacy of procedures and plans” are presented in Fig. 5.

Fig. 5Fuzzy sets representation of the “Availability of procedures and plans” input variable

Adequacy of man-machine interface and operational support: Four fuzzy sets were defined for this input parameter named respectively, “Inappropriate”, “Tolerable”, “Adequate” and “Supportive”. Only the first and the last fuzzy set influence human performance with a negative and positive effect respectively. The range of values covers again the interval from 1 to 100 and depicts the quality of man-machine interface and operational support. The fuzzy sets for the input variable “Adequacy of MMI” are presented in Fig. 6.

Fig. 6Fuzzy sets representation of the “Adequacy of man-machine interface” input variable

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