%0 Journal Article %T THE IMPACT OF CATASTROPHIC FAILURES ON THE EFFECTIVENESS OF QS WITH UNEQUAL CHANNELS %A Galiullin, R.F. %A Il'ina, A.A. %K QUEUING SYSTEM, DEVICES OF DIFFERENT PERFORMANCE, CATASTROPHIC FAILURES, PROBABILITY OF FAILURE, HETEROGENEITY OF PERFORMANCE %J Herald of Technological University %D 2026 %N 29 %P 4 %I Kazan National Research Technological University