the identification of internal factors influencing the bank’s credit risk

the aim this research is the diagnosis of production chains in oil’s regions of iran. for this reason, by using, input-output table for oil’s regions of iran,linkages and production chains are identified. the results of research indicate that although oil and natural gas sectors contain 50 percent of region’s output, but it is not a leading sector. in contrast, manufacturing of species of machines is leading sector in oil’s region. the survey about production chains in oil’s regions of iran indicates that coke and chemicals sector has longest chains in region. meanwhile, the effects of electrics and bank and insurances sectors on oil and natural gas sector are direct.moreover.although water and gas sectors in the region,have relative advantage, but they haven’t any role in the production chains in the region.   jel classification: d57, c67, r15, r12