Abstract:The study of effective factors seems essential since, the operation of profiting entities is very important in the decision of internal and external organization users. The effect of various factors on the assessment scale of operation was measured in different researches, e.g. the structure of ownership. In this study, the relationship between three kinds of various structures of ownership including the structure of shareholder's ownership and other firms and the structure of state ownership Q Tobin's operation scale of listed firms in TSE was considered. The effect of firm's age and size has considered as two control variables on the Q Tobin's operation scale. In this study, the statistical population is listed firms in Tehran Stock Exchange (TSE).

Purpose-this study investigates the effect of asymmetric information on dividend policy in listed companies in Tehran Stock Exchange.Methodology-four main hypothesis have designed by theoretical framework, and tested on 111 listed companies in Tehran stock exchange during 2003 to 2007. The statistic analysis had done by malt-variable regression analysis.Findings-the study findings show that there is a meaningful and reverse relationship between asymmetric information and dividend policy. Some other findings show there is a meaningful relationship between dividend policy and return on stock but there is no meaningful relationship between dividend policy with firm size and book value to market value of equity ratio.Practical implementation-the finding of the study could be helpful for university students and users of financial information and other financial analysts in capital market.

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Nowadays banks, as the most important component ofmoney market, are playing a very important role in country's economy. By developing money markets, banking and financial institutes' activities it is extensively developed and with no doubts economic development is not possible without considering the role of banking and money markets. By virtue of special and sensitive role of banks in Iran economic system, any shock, disturbances and/or ineffectiveness in economic systems directly effect on banks' and financial institutes' performance as well as phenomenon such as high inflation and/or price shocks and fluctuations in other markets such as currencies shall directly and indirectly effect on banks' risk and profitability. Hence in this paper the effects of economic macro variables on capital adequacy, liquidity risk and credit risk of banks have been reviewed. The results show that there is a positive and significant relationship between gross domestic product (GDP), petroleum revenue, and exchange rate oncapital adequacy of banks. But the effects of liquidity and inflation on capital adequacy of banks are negative and significant which means it causes decreasing of capital adequacy of banks. Increasing in the variables of petroleum revenue, liquidity and inflation result in increasing of liquidity risk and vice versa the increasing in variables of GDP and exchange rate decreased the liquidity risk. Petroleum revenue, liquidity and inflation increments cause increasing in banks' credit risk as well as GDP and exchange rate increments result in decreasing in banks' credit risk.

This study examines the value relevance (information content) of cash flow and accounting figures in situations where the information is asymmetrical and Compare the relative information content of them to clarify the role of accounting figures in investment decision making and mitigating the agency problems (specifically resulting from the existence of information asymmetry in the emerging markets). Based on testing a sample of 76 firms from Tehran Stock Exchange (TSE) during 2005 to 2011, the results support the priority of accounting figures over cash flows in the market (TSE). On the other hand, when the information is asymmetrical, the accounting figures are still more relevant than the cash flows and have more relative information content. At the same time, in small firms, the value relevance of the accounting figures compared to cash flows is more; while in large firms, the relative content of accounting figures and cash flow figures aren't significantly different.