Risk analysis is necessary for portfolio management. Investors in setting an appropriate portfolio need to pay attention to risk-related indicators as well as profitability. Beside soft approaches for composing indicators to an index such as AHP, the optimization approaches such as DEA are also considered. However, if the indicators have a hierarchical structure, then it is no longer possible t...

Introduction: Statistical Report of the Social Security Organization indicate that among the various industries, the construction industry has the highest number of work-related accidents so that in addition to frequency, it has high intensity, as well. On the other hand, a large number of human resources are working in this whish shows they necessity for paying special attention to these worke...

Introduction: Hazard Identification, risk assessment and management have an important role in reducing potential risks in industrial settings. This research was done with the aim of identifying the hazard and evaluating HSE risks and providing a HSE management program for the Urea Unit of Shiraz Petrochemical Complex. Method: Firstly, hazard identification and qualitative risk assessment was d...