amirreza kyghobadi

Information flow is a key parameter in an economic activity and acts as a key factor in the emergence, stability and efficiency of capital markets, the information environment in which investors trade, is constantly changing with the dissemination (flow) of information. The purpose of this study is to investigate the returns between companies with information asymmetry based on financing constraints, business strategy and corporate governance. Also, in order to investigate the subject of the study, after extracting data related to companies listed on the Tehran Stock Exchange for From 2010 to 1398, the combined data regression model has been used to test the research hypotheses.According to the research findings, pricing of information asymmetry decreases in conditions of high financial constraint. It is also lower in higher levels of corporate governance. On the other hand, pricing of information asymmetry is higher in levels with bold strategy.The results show that financial constraints lead to differences in the cost of capital between companies with high information asymmetry and companies with low information asymmetry. Provides because pursuing a market-based and innovative strategy requires investing in several new technologies to design products and explore new markets.

AbstractIn the last two decades, in order to reduce the size of the tax gap, the tax authorities of developed countries have shifted from risk-based tax audit to voluntary compliance management. Therefore structure of the tax offices has changed. In tax compliance management, it is important to identify non-compliant incentives to adopt preventive strategies. In this study to identify non-compliance stimuli, after semi-structured interviews with 30 tax experts and using Thematic Analysis and coding method stimulants and indicators identified. Parallel comparison questionnaires were distributed to statistical sample. By using (AHP), effective stimuli in tax non-compliance and related indicators were ranked.The most important stimulus for tax non-compliance risk has been the executive processes, and after that, the stimulus for risk has come from the rules. The level of technology is in the third place and the level of knowledge of the organization is in the last place. The innovation of this research is its focus on identifying internal non-compliance stimuli that can be influenced by the tax administration's policy.Therefore the Iranian Tax Administration can use the results of this research to make changes or amendments to laws, regulations and executive process. Also by increasing the level of technology and organizational knowledge can play a more effective role in managing tax compliance.

Information flow is a key parameter in an economic activity and acts as a key factor in the emergence, stability and efficiency of capital markets. According to the model of rational expectations, the cost of capital depends on the gap between the amount of public information and private information, as well as how information is disseminated. Increasing the information dissemination limits reduces the cost of capital by increasing stock price information. The purpose of this study is to investigate the interactive effect of information environment fluctuations based on audit quality and operational diversification.

For this purpose, data related to companies listed on the Tehran Stock Exchange for the period of 2009 to 2018 have been extracted and the combined data regression model has been used to test research hypotheses.

The results show that audit quality has a significant effect on pricing the quality of accounting information. On the other hand, the effect of operational diversification has been confirmed on the relationship between information asymmetry and the cost of capital. Finally, the research results show that audit quality leads to differences in capital expenditures at different levels of information asymmetry.

Internal auditing can continue to help the independent auditor in providing more reliable reports, as well as on the activities of the bank, and has taken steps to optimize the use of resources from the organi-zation, thereby improving the performance of banks. In this case, investors want to invest more in the bank's shares and will improve the value of the bank's shares. The statistical population of this study was all Tehran Stock Exchange banks and 16 banks that provided all the necessary data for the research over the three years 2015, 2016 and 2017. The results of the research indicate that there is a positive and significant relationship between the quality of internal audit and the growth of stock prices and performance of banks. The results also showed a significant relationship between the period of the tenure, the IT staff with high experience and the auditors' neutrality with the stock prices and the performance of the banks. There was also no evidence that there was a relationship between the number of hours of training of audit staff and the characteristics of management and leadership with the growth of stock prices of banks.