acoustic emission bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBX History of engineering & technology BP neural network Bingham slurry DEM numerical simulation DPM parameters Drucker–Prager model GA-SVM MEA-BP model RF SPH UCS prediction model XGBoost b value backfilled stopes bayesian optimization beetle antennae search algorithm blind shaft cutting blasting brittle-ductile transition chemical-stress coupling factor closed-form solution coal complex variable method concrete part conformal mapping cooling condition copula function crack damage constitutive model