Extended dynamic fault tree (DFT) diagrams represent logical relationships between events. Fault tree model can be used to identify system reliability or potential security weaknesses, and for detecting system of fault-tolerant systems, redundant (or cold and hot spares) repairable system, and public library system with order dependencies for system reliability analysis (SRA). We use stochastic Petri net for the extended DFT analysis and improved its analytic reliability using the

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