mohammad areh kesh salmasi

In this paper, the effect of economic crisis (economic sanctions and corona) and economic growth on cost attachment to 110 companies among the companies listed on the Tehran Stock Exchange in the period 2001-2019 has been studied. Multiple regression was used to test the hypotheses and Petronoster test was used to compare the coefficients during normal and severe embargo. By dividing the research period into three periods of growth and recession (corona), severe economic sanctions and low sanctions, cost stickiness in these periods and also in three levels of public and administrative costs, the total cost of goods sold and operating costs Were examined. Based on the results, costs react asymmetrically to uniform sales changes. Economic prosperity also has a positive effect on cost stickiness, in other words, cost stickiness increases during economic boom. But the recession has a negative effect on cost stickiness, meaning that there is no cost stickiness during the recession and the corona. Severe economic sanctions have a negative effect on cost stickiness, but the difference in cost stickiness during normal and severe sanctions is only significant in terms of operating costs, and in the case of cost-effectiveness of sold goods and the cost of public works and public works. On adhesion, this difference is not statistically significant.

In line with the sustainable growth and development of countries, paying attention to the growth of organizations is one of the policies of all managers, and banks are no exception. Banks should be managed by managers who can increase the value of the company; However, some banks do not seem to comply strictly with these requirements, which may explain the inexperience of some banks. Executives make inappropriate structural capital decisions that make capital structure decisions inefficient. Therefore, the purpose of this study is to investigate the impact of CEO characteristics such as CEO duality, CEO preference and CEO gender diversity on the performance of banks listed on the Tehran Stock Exchange. The statistical population of all banks listed on the Tehran Stock Exchange is between 1390 and 1398, which was examined using linear regression and the results of hypothesis testing showed that the characteristics of the CEO have a significant effect on bank performance and banks perform better than male managers. Also, the high experience of managers has improved the performance of banks, which indicates that managers should be given the opportunity to show their true performance, and the higher their work experience, the better the performance of banks, and in addition, this research showed That the dead have better performance in managing the banks better and can improve the performance of the bank.