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H azard and operability analysis (HAZOP) is widely used in process hazard analysis of chemical processes. But it is time and effort consuming. To aid human experts in conducting HAZOP analysis in a more thorough and systematic way, a software system (PHASuite) for automated HAZOP analysis has been developed. PHASuite can greatly increase the efficiency of(More)
—Survivability has been one of the active fields in network security recently. In order to evaluate the survivability of networked system effectively, this paper proposes a method of combining grey correlation analysis and improved TOPSIS for quantitative assessment. Firstly, it normalizes indicator matrix according to improved TOPSIS method and determines(More)
OBJECTIVE To explore the method repairing the infra-orbital defect after basal cell carcinoma resection. METHOD A facial rotation flap was applied to repair the infra-orbital defects from tumor resection in 28 cases. RESULT All defects were repaired by this one-stage method, which avoided skin graft, shortened the operation time and minimized the(More)
In this paper, we formally define and study the event graph model based on set theory and multi-relations theory, and discuss the methods of modeling event and event relations in detail. The event graph model is mainly designed to extract the potential events and the relationships between events from massive text streams, and further discover the trends(More)