نشریه نظریه های نوین حسابداری
سال چهارم شماره 3 (پیاپی 13، پاییز 1393)

The purpose of this research is to evaluate the effect of profitability and financial leverage on the capital structure of manufacturing companies of Tehran Stock Exchange within a period of 7 years from 1383 to 1389. The statistic sample was chosen randomly including 83 manufacturing companies from among statistic society within the period limits of research. This study has a main hypothesis and two minor hypothesizes. In this research, it used of regression Model with panel data. Test the significant of the model was done using statistics of t and F. The findings of research show that profitability and financial leverage have effect on capital structure in the manufacturing companies of Tehran Stock Exchange. Finally within accepting the hypothesizes of this research, it can result profitability and financial leverage of studied companies in the mentioned period have negative significant effect on their capital structure.

In the current knowledge-based economy, intellectual capital is the main operating excellence and maintain the company's competitive advantage. In current situation of economic of Iran, this subject is more important. The main objective of this paper is to investigate the influence of intellectual capital and its components on the market value and the financial performance of the knowledge-based industries. In this paper, for the intellectual capital measurement is used from pulic model. The time period of 1387-1390 and the selected sample includes 33 company. Research using the method of panel data regressions is performed. The results suggest that between the intellectual capital with financial performance and market value of knowledge-based industries, there is a significant correlation. As well as the results of the research show that among the constituent elements of intellectual capital, the capital employed efficiency has created the most influence is of knowledge-based industries EPS and the effects of human capital in knowledge-based industries to create value added cannot ignore.

The aim of this study is to investigate the relationship between board characteristics and stock overvaluation in firms listed in Tehran Stock Exchange during the period of 2003-2011. In this study, board size, board meeting frequency, board financial knowledge, board independence and board duality are considered as a proxy for corporate governance and audit firm , intuitional ownership, Tobin's q and earning per shares book value are considered as control variables. The Eviwes software has been used to analyze the data. After collecting the required data, using multivariate regression for 71 firms, the hypotheses are tested. The results show that there is not a significant relationship between board characteristics and stock overvaluation in firms listed in Tehran Stock Exchange

There have been numerous theoretical and empirical evidences related to information role of accounting conservatism and it desired impacts in the interest’s providers of corporate capital suppliers. The main objective of this study was examining the relationship between conservatism conditional and unconditioned conservatism with Bankruptcy risk in companies Listed in Stock Exchange. The study sample included 157 listed companies in during years 2007 and 2012. Results indicated there was not a significant relationship between risk of bankruptcy and conditional conservatism. While, this is inconsistent with the theoretical principles of the research which claimed that risk of bankruptcy reduced unconditional conservatism. Results also showed that conservatism unconditioned reduces the risk of bankruptcy. This finding was consistent with theory and research suggests the benefits of accounting conservatism to protect owners’ interests in the company whic are facing with bankruptcy.

The purpose of this research is to investigate the effect of cash conversion cycle on the performance and the expenses of the firms. The relationship between the cash conversion cycle and the profitability through panel data for samples of firms from Tehran Stock Exchange for the period 1381 – 1389 has been studied. The multi-variable regression model has been utilized to test various hypotheses. The results confirm the existence of a negative significant relationship between cash conversion cycle and profitability of the firms, while there is a positive relationship between the cash conversion cycle and the expenses of the firms. It is also evident that the relationship between cash the conversion cycle and the profitability of the smaller firms is negatively significant. The cash conversion cycle affects the performance of firms in different industries and the degree of this effect is more dominant on the dynamic firms in the basic and consumer-goods industries.