the paper studies of the effect the related and unrelated diversification for products and ownership structure on capital structure for a sample of 87 firms out of 19 industry listed on the tehran stock exchange during the period 2004- 2009. for to regress of models to apply of multivariate approach include panel data and cross-sectional regressions. this study adopts panel fixed effects regres...

full, on-time, and with quality disclosure of financial information can lead to the transparency of such information and decreases information asymmetry. among the published information of firms, earnings are of priority importance attended by many users; therefore, the issue of the transparency of accounting earnings is of high importance. the aim of this study is investigating the accounting ...

in this paper using catastrophe theory, we investigate non-smooth changes in tehran stock exchange. stock market crashes bring not only panic among investors, but also in deeper market lead to recession and decrease in consumer's confidence. as catastrophe theory is strong tool in explaining nonlinear phenomena, by applying stochastic cusp catastrophe model we examine sudden change in tehr...

the purpose of this study is to investigate the relationship between free cash flows and stock return considering managers' myopia. two hypotheses have been designed and tested, selecting 96 firms from accepted companies in the tehran stock exchange for six-year period from 2005 to 2010 and using stock return for three years ahead (to 2012). the results show that free cash flows are negati...

Objective: Thisresearch has studied the effect of five main factors including competence of internal audit department, size of internal audit department, relationship between internal and external audit, management support for internal audit, and independence of internal audit on the internal audit effectiveness in companies that listed in the Tehran Stock Exchange in 2017. Methods: Data was c...

the research problem investigated in this paper is modeling volatility and analyzing risk and return’s relationship in tehran stock exchange using garch-family models including garch(1,1), garch(2,2), egarch(1,1), pgarch(1,1), tgarch(1,1), garch(1,1)-m and cgarch(1,1). using the daily returns of tehran stock exchange companies, we focused on two portfolios of all the companies during a 10-year-...