Reliability (Engineering) 27 Mathematical models 7 Engineering 5 Computer software 4 Statistical methods 4 Mathematics 3 Reliability 3 Computer engineering 2 Engineering & allied operations 2 Probabilities 2 Quality control 2 Risk assessment 2 Stochastic Processes 2 Stochastic processes 2 System failures (Engineering) 2 Uncertainty 2 Acclerated life testing 1 Analysis of variance 1 BUSINESS & ECONOMICS / Quality Control 1 Data processing 1 Dependence (Statistics) 1 Design, Industrial 1 Differential equations 1 Dissertations, Academic (Ph.D) 1 Engineering mathematics 1 Failure time data analysis 1 Fault-tolerence (Computing) 1 Fault-tolerence (Engineering) 1 Fractional differential equations 1 Fuzzy engineering 1