درخت حوزه‌های تخصصی

Choosing the proper investment mechanism is one of the main tasks of any investor that requires careful analysis and research on all available information. Since no investor exactly knows whether his or her expectations for a particular stock return will be met, they need to build their strategy in such a way as to eliminate as much damage as possible in the event of an adverse outcome. This study aims to predict the optimal portfolio using Algorithm Analysis Systems. In this regard, 98 firms listed on the Tehran Stock Exchange were examined in 2015-2019. Then, random portfolios were selected to test the research hypotheses by separating value stocks and growth stocks. For analysis, two algorithms of Support Vector Machines and an Adaptive Neuro-Fuzzy Inference System were used to select the most desirable portfolio. According to the support vector machine algorithm analysis, the results confirm the difference between the Sortino and Marquitz portfolios. To build their portfolios, decision-makers often rely on growth stocks which can boost their expected returns. Therefore, recognizing the analytical nature of portfolio formation in specialized areas can help improve investment analysis and pave the way for higher returns.

One of the main strategies in oil industries management is the evaluation of the relationships between the customers and employees. To do so, the interpretive paradigm, the qualitative approach, and the Grounded Theory Approach have been used. As for the qualitative approach, snowball sampling has been used, and the latent content analysis technique has been used to analyze the in-depth reviews, helping to code and identify the employees’ cognitive appraisal indices. Also, as for the quantitative approach, simple random sampling was used, with a structural equation model used for data analysis. The results and findings of the study indicate that the top managers in Iran Petroleum Products Distribution Company, especially those in the Human Resource Development, Commercial, and Research & Technology sections, can use the model extracted in the current study as well as the suggestions provided, to pay more attention to the mental health of the Frontlie Employees (FLEs). They can also use the results to know how the employees deal with the customers’ aggression and abuse. Hence, the current study can be useful for the oil industries researchers.

Introduction: Educating people in different ways is one of the aspects of moral education. Education that plays an important role in the destiny of man and society. One of the issues in moral education is how to involve moral teachings in the political relations of countries. The purpose of this research is to investigate the ethical components affecting political development in higher education. Material and Methods: The current research was applied and implemented in a mixed manner. Thematic analysis method was used in the qualitative part. The statistical population was experts in the field of higher education (administrators and faculty members of universities), from among whom 10 people were selected by snowball sampling. The interview tool was semi-structured and the data was analyzed by coding method and MAXQDA software. In the quantitative part, the method was descriptive-correlation. The research community included experts in the field of higher education and international relations (academic faculty members, cultural advisors, and experts from the Ministry of Foreign Affairs), among whom 50 people were selected in an improbable and accessible way. The data were analyzed using structural equations and pls software. Results: The results of the qualitative part indicated 32 open codes and 6 core codes, which were categorized into 3 categories of educational relations factors at the international level, moral policy, civil and social development. The results of the quantitative part also indicated the appropriate fit of the model, so it can be said that ethics and ethics approaches in higher education can be effective in political development. Conclusion: The results of the findings show that in addition to the desire of countries to develop relations based on respect and moral policy, there are factors in three areas of educational relations at the international level, moral policy, civil, scientific and social development in higher education; Among them: relations based on respect, expansion of international relations, attention to human dignity, freedom, attracting participation, meritocracy, attention to scientific and civil institutions have an effect on political development