میترا حاجی پور

Organizational culture reflects the spirit of the organization and is the basis of communication between the members of the organization and external issues. An accounting information system includes a set of related activities, documents, and technological issues that are designed to collect, process, and report information for managers' decision-making purposes. The purpose of this research was to investigate the impact of organizational culture on accounting information system and operational performance. This research is descriptive-correlation in terms of data collection method. The statistical population in the present study includes all employees with more than 3 years of work experience/department managers, executive managers of companies admitted to the Tehran Stock Exchange, the size of the statistical population is 3540 people. The sample of the present study was selected by available non-random sampling with a sample size of 351 (according to Morgan's table). The questionnaire of the present study was taken from the research of Van Dong Ha (2020). Also, in order to test the hypotheses of the research, the structural equation modeling method was used with PLS version 2.2 software. According to the research results, there is a significant positive relationship between organizational culture and accounting information system. Also, there is a significant relationship between organizational culture and operational performance.

Profits contain important information for domestic and foreign users and are managed by managers to inform foreign investors that the company's performance is desirable. The purpose of this study is to investigate the role of internal controls on the relationship between political relations and earnings management in companies listed on the stock exchange. In terms of the type of purpose, the research is part of applied research and the research method is correlational in terms of nature and content. The research was conducted in the framework of deductive-inductive reasoning and panel analysis was used to analyze the hypotheses. To collect information, data from 146 companies listed on the Tehran Stock Exchange in the period 1392-1392 have been used. The results of this study show that there is a significant and positive relationship between political communication and earnings management and increasing internal controls reduces the impact of political relationships on earnings management.