Traditional DEA models ignore the internal process of production systems and are not able to identify the cause of deficiency in efficiencies measuring. At this research, traditional DEA model and two-stage DEA model were used to measure the efficiency of Iranian private insurance companies during 2007-2009. The results indicated that the traditional DEA model is not suitable for such kind of n...

S urfing on the wings of time, days turned into weeks. Weeks turned into months. And, I found myself at a point to write you again—three months after the first issue of The IJOEM. Since then, many things happened: the Journal was welcomed by various healthcare professionals so that its Web site (www.theijoem.com and www. theijoem.org), received more than 60 000 hits almost three weeks after it ...

More than 1000 radiation workers are engaged in about 70 private industrial radiography companies (IRCs) using 312 mobile gamma radiography devices (GRDs) in Iran. These companies mainly carry out radiography in open areas using 192Ir radioactive sources, ranging from 0.07 to 3 TBq (2-80 Ci). The radiation accidents that occurred in these companies led to acute radiation syndrome in 13 workers ...