مجله پژوهش های کاربردی در گزارشگری مالی
پیاپی 7 (پاییز و زمستان 1394)

The information reported by firms includes information related to earnings based on the past events; while financial statements users need to information about the future. Management earnings forecasts provide information about the future. An important factor should be considered in forecasting earnings is stock return volatility in the present market so smoothing earnings sometimes made by manager to prevent much volatility in the market. The main objective of this study is examining of the relationship between stock return volatility and management earning forecast errors of companies listed in TSE for long and short time horizons. Hence we collected information related to stock price with German & Klass method (1980) as the best anticipant of analytical volatility in fixed scale from TES over 2006-2012 period. To examine the research hypotheses, the significance F-test and t-test of regressions were used. The results show that, there is a significant relationship between stock return volatility and management earning forecast errors in long and short time horizons.

One of the most important purposes of financial reporting is to provide some information about the company’s performance which is measured by earnings and its components. Therefore, this study was designed to evaluate information on earnings and its components in order to clarify the market value of the companies listed in Tehran Stock Exchange. To this end, the information of 88 companies from 1383 to 1390 (a period of eight years) was studied. The results drawn from testing the research hypotheses revealed that accruals and cash flows had a significant correlation with the companies’ market value. Among the earnings’ components, accruals provide more information for explaining the companies’ market value in comparison with operating cash flow. The other result of this study suggested that non-discretionary accruals had more information content compared to discretionary accruals. Moreover, the overall result indicated that regarding the prediction of companies’ market value, the explanatory power of the earnings’ components was greater than that of the mount of earnings.

The objective of this study is evaluating the relationship between the types of Audit Opinion and The earnings persistence in respect of Listed Companies in Tehran Stock Exchange. In This Study, 95 Companies (655 samples of year / company) Listed in Tehran Stock Exchange within a period 2008 to 2014 are assessed. Rahavard Novin software and Financial Statements are used to collect data. Stata (Version 12) and Excel (2013) soft wares are used to analyze data. The Most proper Method For this type of research is Past-Event Method regarding target subject. In this study, the earnings persistence and audit opinion are considered as the dependent variable and independent variable respectively. Besides correlating earnings persistence in respect of companies received different audit opinion. The results indicate there is a significant relationship between the independent variables of audit opinions and the dependent variable of earnings persistence. The findings of study also show there is a relationship between control variables, loss and size of audit firms of company and earnings persistence.

The main aim of the present study is to examine the relationship between cash conversion cycle and operating cycle with financial performance of companies listed on Tehran Stock Exchange. Statistical population of this study is consisted of companies listed on Tehran Stock Exchange during the time period of 2008 to 2014 and sample volume was considered equal to 118 companies by using screening method and after the elimination of outlaying observations. In this study, the measures of operating cash flows including inventory turnover period, period of collection of receivables and the operating cash flows metrics including cash conversion cycle and operating cycle were taken as independent variables in order to study their effect on financial performance of companies. In this study, in which panel data with fixed and random effects were used, results obtained from firm data analysis by using multivariate regression at 95% confidence indicated that inventory turnover period, period of collection of receivables, cash conversion cycle and operating cycle have a reverse (negative) effect on financial performance of companies.

The aim of this study is The Moderating Effect of future expectations and changes to past sales on the cost of behavioral asymmetry in firms listed in the Tehran Stock Exchange. For this purpose six hypotheses are developed and data on the 105 companies in Tehran Stock Exchange for the period between the years 2008 to 2015 were analyzed. This regression model using panel data with fixed effects approach, reviews and tests. The results showed that in the event of an increase in sales in the previous period, the average costs in the current period are sticky. On the other hand, results in a decrease in sales in the previous period, the average costs in the current period are anti-sticky. Also, the results show that for a certain amount increased sales in the current period, The average costs following an increase in sales to a greater extent than in the period before a sales decline in the previous period, increased. In addition, the results showed that the more optimistic expectations are signals that indicate the degree of stickiness If there is an increase in sales expenses in the current period in the prior period, increases. And finally the results indicate that the signal that indicates expectations are more optimistic, the amount of reaction increases Cost to increase sales in the current period.

The importance of bankruptcy prediction caused to create abundant models in this field. Selecting the best model seemed an essential affair due to diversified models of bankruptcy prediction. So comparisons of frequency were performed between the models of bankruptcy prediction, but most of them have investigated model accuracy. In the recent years other dimensions of the models have been studied as well. One of these dimensions is additional information or the same explanatory power of models that its shortage is felt in Iran. In this research the explanatory power of models was studied using the two hazard models (Shumway, 2001; Campbell et al, 2008) and an accounting model (Pourheydari and Koupayei Haji, 2010). For this purpose, information content test was used following Hillegeist et al, (2004) in the form of discrete risk model. The statistical sample of research was 242 companies which were admitted in Tehran Stock Exchange between 2004 and 2014. The results indicate that the hazard models are superior to accounting approach in the dimension of explanatory power and in fact they present more information compared to accounting approach.

Independent auditors are the most important pillars of the capital markets. One of the main strategies to increase their independence is changing them regularly. In this regard, according to the Audit Firms Instruction's Clause 2 of Article 10, mandatory change of auditors is required. This study aimed to investigate the role of management ability in changing mandatory and voluntary audit of the companies listed in Tehran Stock Exchange. The period of this study is ten-years from 2004 to 2013 and 113 companies have been investigated. In order to test the research hypotheses, logistic regression was used and one major general regression models are estimated for each hypothesis. Industry-wide research results suggest management ability has no effect on the mandatory and voluntary audit change. In every industry, it was found that there is negative and significant relationship between management ability and voluntary audit change in metal industry.