ΔVi(d-m) denotes the value at which Rai + Rbi decreases moderately, whereas ΔVi(d-s) represents the value at which Rai + Rbi decreases sharply. Similarly, ΔVi(in-m) and ΔVi(in-s) correspond to the values that increase Rai + Rbi moderately and sharply, respectively. The member ...
The basic idea of their method is to find a feasible solution (𝑥,𝑦)(x,y) that satisfying 𝑋(𝑥,𝑦)=𝑄X(x,y)=Q and 𝑌(𝑥,𝑦)=𝑄Y(x,y)=Q, where 𝑄Q denotes the service capacity of the train station in their model. They discover that after implementing a ...
In Formula (2), 𝐹𝐻𝑛FHn denotes the fuzzy evaluation levels; N denotes the number of risk evaluation levels; 𝛽𝑛βn denotes the belief level of a safety risk factor at fuzzy evaluation levels; additionally, 𝛽𝑛≥0βn≥0 and ∑𝑁𝑛=1𝛽𝑛≤1∑n=1Nβn≤1. This st...