“…Probabilistic, fuzzy and interval theories and methods have also been extensively developed to solve problems involving uncertainty. Over the past several decades, uncertain modeling and uncertain analysis have been receiving considerable attention in many areas such as mathematics [1][2][3][4]10,[20][21][22][23], physics [5,6,[24][25][26][27][28][29][30][31], social sciences [32][33][34][35][36], engineering [12][13][14][15][16][17][18][37][38][39][40][41][42], etc. Generally speaking, random and interval variables are more suitable for most engineering problems as subjective information is involved in a fuzzy variable and hence in fuzzy analysis.…”