TY - JOUR KW - business-critical infrastructure KW - defects KW - dependability indicators KW - evolu¬tion of software KW - fault-tolerant architectures KW - IT-infrastructures KW - macrograph. KW - Markov and semi-Markov chains KW - Modelling KW - safety block diagrams KW - variable parameter AU - Vyacheslav Kharchenko AU - Oleg Odarushchenko AU - Valentina Odarushchenko AB - This paper presents the development of the MFMC-based methodology and technique for modelling and quantitative availability assessment of critical IT-infrastructure consisting of maintained and partially unmanned systems. It takes into consideration a variation of system and component parameters and, in particular, variation of failure rates caused by detection and elimination of design faults. BT - Information & Security: An International Journal DA - 2012 DO - http://dx.doi.org/10.11610/isij.2820 IS - 2 LA - eng M1 - 20 N2 - This paper presents the development of the MFMC-based methodology and technique for modelling and quantitative availability assessment of critical IT-infrastructure consisting of maintained and partially unmanned systems. It takes into consideration a variation of system and component parameters and, in particular, variation of failure rates caused by detection and elimination of design faults. PY - 2012 SP - 248 EP - 265 T2 - Information & Security: An International Journal TI - Multi-Fragmental Availability Models of Critical Infrastructures with Variable Parameters of System Dependability VL - 28 ER -