نشریه اقتصاد محاسباتی
سال یکم شماره 3 (تابستان 1401)

Achieving economic growth plays an important role in determining countries economic power. Therefore, it is particularly important to recognize and examine the factors that influence economic growth. The depth of the banking sector and trade openness are important factors influencing economic growth. In this study, the unit root test of the IPS was used to examine the significance of the variables. After rejecting of co-integration between variables using Pedroni and Kao test to examine the causal relationship between depth of the banking sector, trade openness and economic growth, the Granger causality model of panel data during the period 1980-2020 in 8 D8 member countries has been used. Therefore, for the depth of the banking sector, a composite index obtained from the Principal Component Analysis method and for economic growth and trade openness, two indexes of GDP and total exports and imports in terms of GDP are used, respectively. The results confirm the existence of a one-way causal relationship from trade openness to economic growth. Other results show that the causal relationship between economic growth and the depth of the banking sector has not been confirmed; The findings also indicate that there is no causal relationship between trade openness and the depth of the banking sector in the countries studied.

The possibility of financial crises in the recent years is more than ever during the development of financial markets. In the last two decades, economic figures and financial statements show an unprecedented increase in corporate bankruptcies. The financial crisis can spread to financial markets and play role for impact of liquidity on stock. In this paper, we investigate the effect of liquidity on stock returns by using panel data method for 177 listed companies on the Tehran Stock Exchange in the period of 2007-2020.The results indicate that liquidity during the global financial crisis does not have a significant effect on share returns. In bankrupt companies, share returns have also increased by liquidity has increased. In other words, by increasing the share liquidity of the bankrupt companies, share returns will be increased. All so, when economic growth (year 2007, 2012, 2013, 2015, 2018, 2019) is negative, liquidity affect returns pasetively. The development of new financial instruments such as investment funds will increase the liquidity of stocks and, of course, increase stock returns, which will ultimately improve the development of the capital market for attracting liquidity and micro-capital of society to this financial market.

In this research, the nature of Iran's fiscal policy has been evaluated in business cycles in the period of 1999: Q2- 2021:Q1. For this purpose, the specified model of Hristov (2013) has been used, in which adjustments have been applied due to the dependence of Iran's economy on oil revenues, and the time series of disposable income and consumption of the private sector from the household budget data published by the Iranian Statistics Center. , has been extracted. Also, the VECMX approach has been used to calculate the momentum of expenditures, tax and oil revenues. The results showed that the government spending in periods of economic boom and recession have a positive and significant effect on the growth of private sector consumption, in other words, fiscal policy in Iran is Keynesian in nature. But the intensity of the effects of government expenditure impulses on the growth of private sector consumption e is greater in periods of prosperity than in periods of recession. Also, the number of interruptions in the impact of government expenditure impulses on the growth of private sector consumption is different in the period of prosperity and recession, and this amount is more in the period of recession. In addition, the evaluation of other fiscal policy variables shows that the impulses of tax revenues on the growth of private sector consumption were not significant in business cycles, and the impulses of oil revenues are also positive and significant with four interruptions only in the period of prosperity.

Islamic religion and beliefs play an important role in the intention to buy different products. The present study examines the impact of Islamic beliefs on consumers' attitudes and intentions to purchase life insurance. This research is applied in terms of purpose and descriptive and correlational in terms of data collection. The statistical population of the study was the life insurance customers of Iran insurance Company, whose number is 1379 people, using Cochran's formula, 300 people were randomly selected as a sample. The data collection tool was a standard questionnaire. Structural equation method was used for inferential analysis of data. The results showed that there is a positive and significant relationship between Islamic beliefs and attitudes toward life insurance, between consumer attitudes towards life insurance and purchase intention, and finally between product characteristics and purchase intention.

Growing popularity of smart devices and 5G Internet, loT technology has also developed. The increase in the number of smart objects has led to an increase in data volumes and computational loads on a large scale. For this reason, cloud computing is used as a solution for this amount of data. However, given the importance of service quality, the cloud computing solution may not be responsive to latency-sensitive requests. Allocating resources in cloudy computing also reduces the cost of latency. Dynamic programming has been used due to the large number of requests and problem constraints. The proposed method reduces the cost of latency for loT requests. In this study, the proposed system modeling and algorithms were implemented for four cases. In these cases, two proposed methods have been the contribution of this research that these proposed algorithms have seen a significant reduction in the total latency cost. But as expected, the backward algorithm had a better response than the forward algorithm.

AbstractPharmaceutical industry has a main share in capital market and a considerable role in stock market transactions through the collection of community micro-savings. Hence, the cruicial aim of this paper is to investigate the effects of nominal exchange rate volatility and entry of real shareholders on the return on assets (ROA) in the 32 pharmaceutical materials and products of Tehran stock exchange as a import oriented companies during the period of 2011-2019. For achieving this, by using of Panel GARCH method, the exchange rate volatility has been estimated and then, the impacts of this variabble with other explanatory variabbles such as entry of real shareholders, profit margin, capital and interest rate to the operational profit, have been examined on return on assets in these companies. The empirical results of model estimation by GMM estimator revealed that the exchange rate volatility has negative and entry of real shareholders has positive and significant effect on the return on assets. Moreover, the auxiliary variables like profit margin, capital and interest rate have positive, positive and negative effects on the return on assets. By results of this study, we can suggest that the financial policy makers with decreasing of exchange rate volatility through control of domestic prices and capital market stabilization policies, motivate real shareholders to enter the capital market and increase the production and profitability of pharmaceutical companies.

he spread of the virus (Quid 19) since January 2017 in Wuhan, China has caused many diseases and deaths in the world. The consequences of this virus have caused recession and other global problems so that even developed countries claim to have social health systems. Advanced were in trouble. Questions or hypotheses including: a) The main questions of the research: Does the financial crisis of Corona have a significant impact on the stock index of selected listed companies? Model sub-questions: Do currency crises have a significant effect on the stock index of selected stock exchange companies? Do oil crises have a significant effect on the stock index of selected stock exchange companies? Sub-hypotheses of the research: Currency crises have a significant effect on the stock index of selected listed companies. Oil crises have a significant impact on the stock index of selected listed companies. The statistical population is all companies listed in the Tehran Stock Exchange Organization that the research return time period is seven years between 1392 and 1399. The method used in the present study is descriptive-analytical, which in order to adapt economic theories to the realities of society, the relationships between variables are examined using statistics and after matching the theories, using From the inferential statistics and econometric method of the panel in Iveys software, the rejection or proof of the presented hypotheses is tested. All three models were accepted.