похибка error 3 погрешность 3 556.55(556.13 556.142) 1 621.314 1 Kyiv Pechersk Lavra 1 approximation 1 cave complex 1 convergence 1 current transformer 1 data processing procedure 1 diagnostics 1 dielectric loss tangent 1 differential equation 1 discrepancy 1 estimation 1 heat-moisture transfer 1 high voltage insulation 1 hydraulic pump 1 ill-posed equation 1 iteration method 1 mathematical model 1 mathematical modeling 1 non-stationary process 1 numerical method 1 operator 1 parameters 1 processing procedure error 1 projection-iteration method 1 sequence 1