University of Tehran
Accounting and Auditing Review
2645-8020
2645-8039
18
64
2011
08
23
The Relation between Accounting earnings’ Timeliness and Conservatism with Firm size and Auditor size
1
18
FA
Hamid
khaleghimoghadam
استادیار دانشگاه علامه طباطبایی، ایران
hamidkhaleghi@yahoo.com
Mostafa
Ahmadkhanbeigi
دانشجوی دکترای حسابداری دانشگاه تهران، ایران
babak.khanbeigi@gmail.com
In this paper we investigate the trend of accounting earnings’ timeliness and conservatism in accepted companies in Tehran Stock Exchange (TSE). We also consider Firm and Auditor size’s impact on these two variables.
We use 90 firms per year in order to investigate the research subject, all the data are relate to the years 1378to 1386. We analyze the data by means of both simple and multiple regression models within SPSS and E. Views statistical software. The research findings show that accounting earnings do not become timelier in investigated period.
We also find that there is no significant difference between big and small firms in providing both timelier and more conservative earnings. On the other hand we find that there is no significant difference between accounting earnings of firms which are audited by Audit organization compare to firms audited by members of Iranian Association of Certified Public Accountant (IACPA).
Accounting earnings,Auditor Size,Conservatism,Firm Size,timeliness
https://acctgrev.ut.ac.ir/article_23953.html
https://acctgrev.ut.ac.ir/article_23953_82a40f471d3942b9a1fed237325b6ce2.pdf
University of Tehran
Accounting and Auditing Review
2645-8020
2645-8039
18
64
2011
08
23
Active Portfolio Management Modeling with VaR and Genetic Algorithms
19
34
FA
Reza
Raei
دانشیار دانشکده مدیریت دانشگاه تهران، ایران
rraei@ut.ac.ir
Saeid
Fallahpour
استادیار دانشکده مدیریت دانشگاه تهران، ایران
sfallahpour@gmail.co
Active portfolio management is a famous strategy in capital markets. A problem with this strategy is that it ignores the overall portfolio risk. For solving this problem, we examine the impact of adding a new Value at Risk (VaR) constraint to the active management model. In this study, we use Genetic Algorithms for optimization of this model, Sharp Ratio and Return to VaR Ratio for performance measurement of the models.
Results show that the new model, in comparison to active model without VaR constraint, has significantly better performance.
Active Portfolio Management,Genetic Algorithms,Portfolio optimization,Value at Risk
https://acctgrev.ut.ac.ir/article_23954.html
https://acctgrev.ut.ac.ir/article_23954_e5fb13fdf43e14f74671c62629f4fb46.pdf
University of Tehran
Accounting and Auditing Review
2645-8020
2645-8039
18
64
2011
08
23
Activity Based Costing (ABC), New Outlook for Calculating Cost Price of Students' Education in Different Majors of Medical Group (Case study: Medical Science Universities of
Shiraz, Fasa and Yazd)
35
56
FA
Ahmad
Rajabi
دانشجوی دکترای مدیریت سیستمها، دانشکده اقتصاد و مدیریت دانشگاه شیراز، ایران
arajabi53@yahoo.com
In this research, “Activity Based Costing” (ABC) system was used in a comparative form to calculate cost price of training students in Shiraz, Yazd and Fasa. For this purpose, after defining activity centers, by applying cost driver, costs allocating processes in each activity center was determined. Finally concerning the usage credit based of activity service centers, costs price of each credit were calculated and from the whole credits costs, cost price of each major was calculated.
Results showed student education cost price in different majors has a significant difference. This difference mainly originates from the number of subject-credits, equipments needed, the arrangement of practical and theoretical subjects and the number of students. In addition, nearly 40% of the cost price in each major is related to sustaining costs (university and college chief, cost pool and educational indirect costs) and others are related to unit level costs (manpower cost and consuming material in laboratories).
Activity Based Costing,Activity Center,Cost Driver,Cost Object
https://acctgrev.ut.ac.ir/article_23955.html
https://acctgrev.ut.ac.ir/article_23955_daa374e4c09ec88b339cdbe72cef388b.pdf
University of Tehran
Accounting and Auditing Review
2645-8020
2645-8039
18
64
2011
08
23
Conservatism and information content of financial statements items
57
72
FA
Ali
Rahmani
استادیار حسابداری دانشگاه الزهرا(س)، تهران، ایران
rahmani.ali@gmail.com
Hamideh
Asna Ashri
دانشجوی دکترای حسابداری دانشگاه الزهرا(س)، تهران، ایران
hamidehasna@initor.com
Azam
Valizadeh Larijani
دانشجوی دکترای حسابداری دانشگاه الزهرا(س)، تهران، ایران
valizadehlarijani@initor.com
In this research we examined the relationship between conservatism and information content of accounting earnings in 131 firms, listed on Tehran Stock Exchange (TSE) during years 2002 to2010. Conservatism is measured by using three models including Basu (1997), Ball and Shiva Kumar (2005) and Ball, Kothari and Robin (2000) models. Information content is measured by Easton and Harris (1991) model.
Research Findings show that firms accounting earnings are conservative and it decreases the information content of accounting earnings. Also conservatism has not leaded to more returns to investors.
Accounting earnings,Conservatism,Information Content,Stock Returns
https://acctgrev.ut.ac.ir/article_23956.html
https://acctgrev.ut.ac.ir/article_23956_ef7a1e95e23de0297c56245ba3930a77.pdf
University of Tehran
Accounting and Auditing Review
2645-8020
2645-8039
18
64
2011
08
23
Usefulness of Capital Structure and its change for achieving financial strategies of companies in the Tehran Stock Exchange
73
90
FA
Mohammad
Setayesh
استادیار حسابداری دانشگاه شیراز، ایران
setayesh@shirazu.ac.ir
Mozafar
Jamalian Pour
دانشجوی دکتری حسابداری دانشگاه علامه طباطبائی، ایران
jamalianpour@initor.com
Current article attempt to investigate the effects of capital structure and its change on the kind and amount of achieving in seven financial strategies. For this purpose we test 2394 firm-year of the accepted companies in the Tehran Stock Exchange between years of 1377 until 1387. For testing the hypotheses, kolmogrov-smirnov, spearman's correlation coefficient and logistic regression in backward elimination mode were employed. Results show that companies which different in kind and amount of achieving financial strategies had different capital structures and differently change their capital structures. In addition findings reveal significant relationship between kind and amount achieving financial strategies and capital structure components and its kind and amount change in them, but it was differ in different financial strategies. Lastly, with using data of capital structure and its change can obtain well models that predict kind and amount of achieving financial strategies.
Capital structure,Financial Strategy,Financial Structure,Logistic regression Analysis.
https://acctgrev.ut.ac.ir/article_23957.html
https://acctgrev.ut.ac.ir/article_23957_3dfd89f3203234445e468fc28302395e.pdf
University of Tehran
Accounting and Auditing Review
2645-8020
2645-8039
18
64
2011
08
23
The effect of Income smoothing on firm's information uncertainty, stock returns and cost of equity
91
112
FA
Gholamreza
Soleimany Amiri
استادیار حسابداری دانشکده علوم اجتماعی و اقتصادی، دانشگاه الزهرا (س)، ایران
gh_soleimany@yahoo.com
Razieh
Hamzi
کارشناس ارشد حسابداری دانشگاه الزهرا (س)، ایران
hamzi@initor.com
This study investigated the effect of income smoothing on information uncertainty, stock return and cost of equity. For income smoothing two indices are used: total accruals smoothing and discretionary accruals smoothing. With accurate study of literature we hypothesized three possibilities and selected 111 companies listed in Tehran stock exchange as our survey for a period of three years, 1385-1387.
In this study, Ohlson and Juttner- Narouth models were used to collect data. Our hypotheses were analyzed using multiple liner regressions and F and T tests. Our results showed that income smoothing caused reduction in information uncertainty in selected companies. It also showed that when fluctuations related to unexpected stock earnings are controlled, income smoothing 5 days before and after earnings announcement has no effect on companies' stock return. Finally our data showed that income smoothing has no effect on cost of equity.
cost of equity,Discretionary accruals smoothing,Information uncertainty,Stock Return,Total accruals smoothing
https://acctgrev.ut.ac.ir/article_23958.html
https://acctgrev.ut.ac.ir/article_23958_0a1d580c0975860eebb80c3dff75b9c9.pdf
University of Tehran
Accounting and Auditing Review
2645-8020
2645-8039
18
64
2011
08
23
The Investigation Relation between Revenue Growth Sustained earnings with, Earnings response coefficients
113
128
FA
kambiz
korani
دانشیار حسابداری دانشگاه شهید بهشتی، تهران، ایران
kambiz.korani@gmail.com
This study investigates the relation between earnings growth supported by revenue growth and earnings response coefficient in firms listed with Tehran stock exchange. To test these hypotheses we use multiple regressions for which 95 sample firms over the period from 1380 to 1387 are selected. SPSS software is applied to estimate regressions models.
The findings are indicative of significant relation between earnings growth supported by revenue growth and earnings response coefficient. On the other hand firms pursuing revenue reduction strategy have larger earning response coefficient than those following cost-reduction strategy.
earnings,ERC,Revenue Growth
https://acctgrev.ut.ac.ir/article_23959.html
https://acctgrev.ut.ac.ir/article_23959_f7914ed5d9460fa3df53c45376b71fe6.pdf
University of Tehran
Accounting and Auditing Review
2645-8020
2645-8039
18
64
2011
08
23
Corporate Governance and Equity Valuation: The Model by Using Artificial Neural Network
129
150
FA
Gholamreza
Karami
0000-0003-3101-1549
عضو هیات علمی دانشکده مدیریت دانشگاه تهران، ایران
ghkarami@ut.ac.ir
Salman
BeikBoshrouyeh
دانشجوی کارشناسی ارشد حسابداری دانشگاه تهران، ایران
salmanbeik@ut.ac.ir
In this study will be investigated the relationship between the corporate governance mechanisms, including board size, duality, outside directors and institutional investors, with the share value. for create a link between elements of corporate governance and equity value, is used from the Ohlson`s valuation model (1995), and corporate governance mechanisms replace with the "Other Information" in this model. Background research indicates that there isn`t linear and Specified relationship between the mechanism of corporate governance and the company's stock price. Therefore, the artificial neural network is used to identify any relationships between model variables .In other words, assumption of linear information dynamics, in the Ohlson`s model will be challenged. After The design of artificial neural network model, the results is compared with ordinary least squares method. For the design of Neural network model and the linear regression equation, totally is used from 776 firm-years information and for to test the neural network and linear regression is used of 62 firm-years information in the years 1380 to 1389. Neural network used in this researchis of multi-layer perceptron with error back propagation learning algorithm and is used on it from two hidden layer to simulate the relationships between variables.
The results suggest that: 1.using of Mechanisms of corporate overnance as part of other information in the ohlson valuation model (1995) cause to increase the explanatory power of the valuation model, and 2. Using of artificial neural networks raises the explanatory power and accuracy of the model than ordinary least squares method, to analyze relationships between variables
Artificial Neural Network,Corporate governance,ohlson (1995) valuation model.
https://acctgrev.ut.ac.ir/article_23960.html
https://acctgrev.ut.ac.ir/article_23960_48ed0152dffb88cce55712ed8ab4207e.pdf