List of Articles Hossein Jahangir nia

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  1 - The Integration of Multi-Factor Model of Capital Asset Pricing and Penalty Function for Stock Return Evaluation
  Aliakbar Farzinfar Hossein Jahangirnia Hasan Ghodrati Reza Jamkarani
  10.22034/amfa.2019.584793.1180
  One of the main concerns of investors is the evaluation of the return on investment, which is conducted using various models such as the CAPM (single-factor model), Fama-French three/five-factor models, and Roy and Shijin’s six-factor model and other models known More

  One of the main concerns of investors is the evaluation of the return on investment, which is conducted using various models such as the CAPM (single-factor model), Fama-French three/five-factor models, and Roy and Shijin’s six-factor model and other models known as multi-factor models. Despite the widespread use of these models, their major drawbacks include sensitivity to unexpected changes, sudden shocks, high turbulence of price bubble, and so on. To eliminate such negatives, the multi-factor model using the penalty function method is used, in which, instead of averaging, the optimization and avoidance of the effects of abnormal changes and other factors affecting the capital market are considered. In order to evaluate stock returns, it is possible to select effective factors, to simulate and develop a model appropriate to the conditions governing the capital market in Iran. In the present study, by forming portfolios of investments and identifying and refining effective factors, the classification and estimation of the hybrid model of penalty and multi-factor (P & PCA) functions were performed based on the functional data during 2007-2017. The results of this study indicated that the extensive use of the simulation algorithm for the penalty function in the form of P & PCA estimation method improves the efficiency of multi-factor methods in stock return evaluation, and that the use of the hybrid algorithm of penalty and multi-factor functions, compared to the exclusive use of multi-factor models, brings a higher accuracy in estimating stock returns. Manuscript profile
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  2 - Identifying and Prioritizing Investment Risks in Sports Projects
  Hossein Dalvand Mohammad Hasan Maleki Hossein Jahangirnia Mojgan Safa
  10.22034/amfa.2021.1918106.1536
  One of the biggest shortcomings of urban spaces in most cities of the country is the lack of suitable sports spaces, which in addition to improving the health of the general public, especially the youth, creates a lively environment and can boost the development of the More

  One of the biggest shortcomings of urban spaces in most cities of the country is the lack of suitable sports spaces, which in addition to improving the health of the general public, especially the youth, creates a lively environment and can boost the development of the tourism industry. Many projects in the country, especially sports, are slow or stopped due to not evaluating the relevant risks, so the purpose of this study is to identify and prioritize investment risks in the country's sports projects. The present study is a positive research in terms of philosophical foundations and is applied in terms of orientation. The statistical population of the study includes experts in the field of sports tourism and the sampling method has been done judgmentally. To conduct the research, in the first stage, the risks of investing in sports projects were assessed through literature review. The number of these risks was 15, and after screening with a Binominal test, 6 factors were excluded. The remaining 9 factors were evaluated in terms of degree of impact with Dematel technique and 5 factors, i.e. market risks, economic risks, legal risks, financing risks and stakeholder conflict risks were selected as the most effective risks in terms of net effect index. Finally, these 5 risks were ranked by Aras decision technique and it was observed that the economic, market and financing risks, had the highest priority. Manuscript profile
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  3 - The Effect of CEO Power on Stock Price Delay
  Saeid Baseri Hossein Jahangirnia Mohammad Kashanipour Reza Gholami Jamkarani
  10.22034/amfa.2021.1910334.1488
  News and information reflect on the stock prices rapidly in the capital market. But some factors cause delays in reaching the stock market to its intrinsic value. This study aims to investigate the effect of CEO Power on stock price delay of listed Companies in Tehran S More

  News and information reflect on the stock prices rapidly in the capital market. But some factors cause delays in reaching the stock market to its intrinsic value. This study aims to investigate the effect of CEO Power on stock price delay of listed Companies in Tehran Stock Exchange. In order to measure the power of the CEO, six different criteria, based on the research of Lisic et al. have been used. For this purpose, data related to 107 companies in Tehran Stock Exchange from 2011 to 2018 were analyzed. The regression model used in this research has been assessed using panel data with fixed effects approach. The results showed that CEO power has a negative and significant impact on stock price delay. The results also indicate that the powerful executives have more independence and play a more supervisory role over the board of directors; This reduces the infringement of the stakeholder rights and lowers the agency costs. Lower agency costs result in less information asymmetry and lower financial information transparency, and ultimately, reduces the stock price delay. Manuscript profile
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  4 - Meta-analysis of auditor characteristics and profit quality (Considering auditor characteristics indicators)
  parisa mohammadrahimi Mojgan Safa Majid Zanjirdar Hossein Jahangirnia
  10.22034/amfa.2021.1925946.1577
  The purpose of this study is to perform a meta-analysis of the relationship between auditor characteristics and profit quality. In order to integrate the results of different researches and identify the factors that modulate the relationships between auditor characteris More

  The purpose of this study is to perform a meta-analysis of the relationship between auditor characteristics and profit quality. In order to integrate the results of different researches and identify the factors that modulate the relationships between auditor characteristics and profit quality, in this research we will use meta-analysis methodology which is one of the quantitative statistical methods. In order to implement the meta-analysis method, they were identified and collected from the websites of foreign journals (articles published in the period 2005 to 2020) and the Internet site of domestic scientific research journals (articles published during the years 2006 to 2021) as a statistical population of the research. Systematic removal has finally analyzed 50 studies; The results of studies conducted in the period and around this relationship indicate that most of these studies are heterogeneous. In order to identify the cause of this heterogeneity, by dividing the research based on different criteria for measuring profit quality and auditor characteristics and calculating intra-group chi-square statistics, we found that these different measurement criteria used in research are one of the factors of contradiction in the results. There have been researches. In the following study, it was observed that there is no significant relationship between auditor characteristics with profit smoothing and timely profit and also between non-audit services provided by the auditor and profit quality, while in contrast, there is no significant relationship between auditor characteristics and quality of accruals; Profit stability; There is the ability to predict profit and conservatism. Manuscript profile