This study aims to identify and to classify Open book accounting (OBA) dimensions according to inter-organizational cost management (IOCM). The study selects six university professors in the field of accounting and by studying the theoretical literature and conducted investigations inside and outside of the country, the OBA dimensions were identified and then they were classified by analytical hierarchy process technique. According to the studies and experts’ ideas, four dimensions including nature of data and accounting data disclosure practices, uses of disclosed accounting data, conditions of OBA, cost implementation of OBA were identified as OBA dimensions. The results of our survey indicate that the form of data disclosure as well as coordination and planning among team members played essential role for OBA development. In addition, trust and the cost of the second party were other important factors, which must be considered when OBA is applied in any industry.

This study aims to investigate the effect of risk management on earnings volatility on shares of banks listed in Tehran Stock Exchange. The statistical population includes all 20 listed banks in Tehran Stock Exchange over the period 2009-2015. As the number of listed banks in Tehran Stock Exchange was limited, census method and multiple regressions in panel data were used to collect the data and to test the hypotheses, respectively. In this study, earnings volatility was calculated given in Dichev and Tang (2009) [Dichev, I. D., & Tang, V. W. (2009). Earnings volatility and earnings predictability. Journal of Accounting and Economics, 47(1), 160-181.]. The results indicate that the coefficient of risk management was -0.20 with Sig. = 0.002; therefore risk management maintains a negative effect on banks’ profitability volatility. In addition, stock return coefficient is 0.0053 (Sig. = 0.000) which indicates a positive effect on earnings volatility. The coefficients of dividend ratio, firm size and liquidity ratio were 0.023, 0.071 and 0.059, respectively and they have significant and positive effect on earnings volatility.

This study aims to identify and to classify Open book accounting (OBA) dimensions according to inter-organizational cost management (IOCM) in petrochemical companies listed in Tehran Stock Exchange. In this research, there are 18 statistical society financial and accounting experts listed in Tehran Stock Exchange. By studying the theoretical literature and conducted investigations inside and outside of the country and also the experts’ comments, the OBA dimensions were identified and then classified by analytical hierarchy process technique. According to the studies and experts’ ideas, four dimensions including nature of data and accounting data disclosure practices, uses of disclosed accounting data, conditions of OBA, cost implementation of OBA were identified as OBA dimensions. The results of examinations were shown that, considering the comments on dimensions of nature of data and accounting data disclosure practices, the form of data disclosure plays a more important role. In uses of disclosed accounting data dimension, coordination and planning among team members play the most important role. According to conditions of OBA dimension, trust is the most important one and in cost implementation of OBA dimension, the cost of the other party plays the most important role.