درخت حوزه‌های تخصصی

In financial markets such as Tehran Stock Exchange, P/E coefficient, which is one of the most well-known instruments for evaluating stock prices in financial markets, is considered necessary for shareholders, investors, analysts and corporate executives. P/E is used as an important indicator in investment decisions. In this research, harmony search metaheuristic algorithm is used to select optimal variables affecting P/E and then, modelling is done through multivariate regression based on panel data. For this purpose, a sample of 87 companies has been selected from listed companies in the Tehran Stock Exchange during a 10-year period (2006-2015). The results indicate the effect of the variables of stock returns, stock price to book value ratio, price to net selling ratio, return on assets, earnings per share, market value to book value, money volume, operating return margin, return on capital, and current assets, as top ten variables, on P/E ratio, which estimates a total of 86% of the P/E ratio changes.

There is a degree of ambiguity, contradiction and complexity in the management capability and knowledge achievements of the organization, which needs to be designed and presented in a conceptual framework in a simple framework in order to reduce uncertainty in the management of the organization. The purpose of this study is to provide a systematic perspective on the knowledge-centered organization, continuity of survival and avoidance of organizational decline and on the other hand to create an understanding of the relationship between knowledge-based management and life and organizational decline in five organizations integrating in the banking industry . In this study, data were collected using a questionnaire from 150 managers, experts of five banks and financial and credit institutions (about to merge). In this study, two issues have been examined; First, using the method of performance importance analysis, the position of organizations in the two areas of knowledge-oriented and capital-based were examined. Two banks are in the position of innovative organization and two other banks are in the area of illusion, and one bank is on the border of excellence and illusion. Finally, with the structural modeling method based on the partial least squares approach, the interrelationship between knowledge-based leadership with innovation, excellence, illusion control and organizational decline of the defined hypotheses have been tested that these variables reinforce each other. And the effect of independent variables on dependent variables is strong.