فصلنامه بررسی های حسابداری و حسابرسی
پیاپی 66 (زمستان 1390)

For any business concern the net profit or bottom line for a particular time period is the end result of its investing, financing and operating activities. These activities can be visualized as being influenced by management’s decisions and a host of internal and external environmental factors. This study analyzes the An Investigation of The Influence of Key Financial And Economic Indicators on Profitability of firms for a sample of 64 Iran companies listed in Tehran Stock Exchange (In sectors of Manufacture of parts and accessories for motor vehicles and their engines, Manufacture of pharmaceuticals and Manufacture of basic chemicals) for a period of 5 years from 1384-1388. Overall results indicate that there is a significance relationship between and profitability, financial leverage and profitability, sales growth and profitability and average stock price and profitability. But isnot a significance relationship between liquidity and profitability

In this study the effect of financing on the changes of the level of conditional conservatism in financial reporting has been studied. Hence, information of companies listed in Tehran Stock Exchange over the period 2001-2010 is applied. To obtain conditional conservatism, the model of Basu (1997) is employed. In order to examine the impact of financing on conservatism, structures of financing are added to the Basu model. Results of research indicates that companies that are financing through long-term debt, in spite of expectation, neither years nor years before financing, do not reduce the level of conditional conservatism. But companies that are financed through equity, as expected, both in finance and before time period, the level of conditional conservatism in financial reporting reduce. This improves the capital market expectations of future performance; consequently, the financing will be more efficient.

In this research, the market reaction to the changes of dividends, resulting from the dividend payment trend, is evaluated. In other words, conditions of the reaction of the investors to each of the three trends: increasing trend, decreasing trend, and no major changes trend, is evaluated. Each group is evaluated using CAPM and Fama French 3 Factor (FF3F) methods. Results of the increasing trend show that fundamental positive deviation results in positive reaction of the market; while stable deviation causes minor negative reaction and fundamental negative deviation causes the same, too. In a stable trend, fundamental increase causes positive reaction, continuation of the stable trend causes significant minor negative reaction, and fundamental decrease causes significant negative reaction from the market. In a decreasing trend, fundamental decrease and fundamental increase result in minor negative reaction of the market, and continuation of the stable trend results in the positive reaction. Results of the evaluation show that following a specific trend, the market shows a positive reaction to the increase of the trend. The market would not show an unexpected reaction as long as the institute follows its ongoing trend. With regard to the point that the market reaction to the fundamental positive deviation of a negative trend is negative, it can be concluded that positive news, regarding to a negative trend, would not face a suitable reaction from the market, and the market follows the same trend in these kinds of deviations

One of the most important tools to determine performance strengths and weaknesses identify opportunities and corporate external threats is Company ranking. Since that custodians of corporate and analystor of capital market have lack of knowledge in new models ranking, most ranking are done with Assumptions that the uncertainty is not considered. We combined fuzzy logic and analytic hierarchy process (AHP) for uncertainty modeling such a manner was a logical and practical. Since that importance of financial ratios are different for different groups, by using a questionnaire distributed among different groups affect investment decisions, weights of finally indicates calculated, then by using TOPSIS model basic metals industry that member Tehran Stock Exchange in 1388 are ranking.

The earning forecast has long consumed the attention of investors, managers, financial analysts, researchers and providers of credit. The main source of information for investors, creditors and others active in the stock market is the forecasted earning in the statements issued by the companies themselves. This paper explores the link between ownership management forecast error with abnormal return among and systematic risk among Irans’s listed companies (Tehran Stock Exchange). We employ financial data of 75 firms listed in Tehran Stock Exchange during 1383 to 1389. Panel Data methodology is used in order to test the hypotheses of this research. Moreover, the effect of the other parameters including the firm size, profitability, financial leverage, book value per market value ratio and Altman's Z score were investigated by introducing them in the model parameters. This paper contains significant and consistent results. The results of testing hypotheses for each of the seven years and the pooled sample show that there is a positive linear relationship between management forecast error and Abnorma return. This study suggests that there is no existence of a linear relationship between management forecast error and Systematic risk.

The purpose of this research in to examine the relationship between Bid-ask spread and quality of the external audit in the Iran capital market. To achieve this goal we have considered two hypothesis including audit big firm and audit firm tenure and choose 108 companies between accepted companies in Tehran stock exchange for four years (1384 to 1387). The method used in this research for testing the hypothesis is panel data.The findings of the research show that bid - ask spread have a meaningless relation with audit big firms and audit firm tenure have negative relation and they are meaningful.

Application of advanced technologies is important in today's business environment.One of advanced technologies in use and presentation of financial statements is "extensible Business Reporting Language" (XBRL). That the major benefits provides in all stages of business analysis and reporting. In this study, we tried to examined factors affecting the adoption of XBRL in Iran's National Petrochemical Company and subsidiary companies. The results of this evaluation can help to the decision makers and implementers of this innovation to manage different aspects of the issue with more knowledge and reduce the costs and negative effects. To Achieve this goal, after study of literature and background research,11 factors influencing the adoption of XBRL were identified. Then Financial experts were surveyed with a questionnaire. His Reviews were analyzed using structural equation models. Finally the effects of nine independent variables were approved on the dependent variable.