Showing 5 results for mahmoudi
Dr. Vahid Mahmoudi, Dr. Shapour Mohammadi, Dr. Hasti Chitsazan,
Volume 1, Issue 1 (10-2010)
Abstract
The characterization of memory effects in crude oil markets is an interesting issue that has attracted the attention of researchers from different disciplines, from econophysics to more classical economics. The importance of the problem relies in the fact that the departure from uncorrelated behavior would imply the presence of not-random effects which, in principle, can be exploited for arbitrage.
This paper tries to contribute into the issue by estimating the memory effects by means of different parametric, semi-parametric, and non-parametric methods. In the other words, this paper provides analysis on the memory of the oil markets measured via the fractional integration parameter (d) by estimating it with various methods such as the MLE, NLS, GPH, Whittle, Lo, Hurst Exponent and Wavelet. To achieve this goal, we use the daily time series for WTI and Brent spot crude oil prices as well as 3-month futures, and further divide them into yearly subsections to obtain the historical series of memories.
Results of the whittle and wavelet estimations, which are better suitted for this analysis, show no evidence of a long memory process. However, the oil price time series exhibits a nonstationary mean-reverting behaviour.
Note that in this paper the behaviour of memory is our concern instead of the memory value itself. The results of memory changes trend shows that memory of international oil markets does not have an important trend change. In the other words, in our study period the efficiency of the market does not have an important decline or increase.
Davoud Mahmoudinia, Jacob Engwerda, Rahim Dallali Esfahani, Rasul Bakhshi Dastjerdi, Majid Fakhar,
Volume 7, Issue 24 (6-2016)
Abstract
In this paper we analyzed the strategic interaction between government and central bank in Iranian economy. Using dynamic differential games and Nash equilibrium within cooperative and non-cooperative setting, we try to find the optimal values of debt, deficit and monetary base. The results of simulation show that in cooperative case the level of equilibrium debt is lower than the non-cooperative case and converge speed is higher in cooperative setting than non-cooperation setting. Also in cooperative case than non-cooperative case, less creation of money and less government deficit are needed for debt stabilization in long run. The results also show that in both cooperative and non-cooperative cases under uncertainty, more active policies are used to track debt to its equilibrium level. These active policies lead debt goes to smaller level.
Hosein Mohammadi, Mehdi Mahmoudi,
Volume 8, Issue 28 (7-2017)
Abstract
Interest rate is one of the most important policy variabels in macroeconomic. Global financial crises and big debt in some countries around the world, make the importance interest rate more explicitly. In the carrent study, the effect of interest rate, inflation, government investment and expenditure on GDP capita per was investigated using panel data approach. Forthermore panel VAR method was used to consider the effects of each mentioned variables on each other and investigating causality relationships between these variabls. 20 Islamic and 19 Non-Islamic countries during 1990-2014 were selected for this study. The results show that in both Islamic and Non-Islamic countries, interest and inflation rate have a significant negative effect on GDP per capita. Government investment in both groups of countries have a significant positive effect on GDP per capita. These results are inline with economic theories. Finally, government expenditures in these groups of countries have different effect on GDP per capita. also lowering interest rate Non-Islamic countries has a considerable effect on other variables.
Behrouz Sadeghi Amroabadi, Davoud Mahmoudinia,
Volume 11, Issue 39 (3-2020)
Abstract
In monetary and financial literature, financial crises include a wide range of crises. But in general, there are three important types of financial crisis, including the currency crisis. The banking crisis and the debt crisis. The aim of this study is to simultaneously analyze the occurrence of banking, debt and currency crises, known as the three crises in Iran. For this purpose, first to determine the indicators related to banking crises, currency and debt payments and using logistics and self-regression vector models during the 1980 to 2017 seasonally, we have discussed the relationship between these three crises. The results show that the three banking crises, debt and currency, affect each other. The short-term results of the VAR model showed the effect of the banking crisis and the currency crisis on the debt crisis is positive and significant, indicating an increase in the likelihood of a banking crisis and the currency will increase the debt of the government and the country. Also, the effects of banking and debt crises on the currency crisis are positive and significant. This indicates the existence of causal relationship between banking crises and debt on the currency crisis. The results of the Logit model show that the effect of inflation variables, liquidity growth and the growth of the exchange rate on the indicators of the three crises that are significant and positive in most models.
Davoud Mahmoudinia, Hadis Mazangi,
Volume 12, Issue 46 (12-2021)
Abstract
Today, the unconventional policy of negative interest rate is discussed in many Western societies and developed countries, and the implementation of this policy in the financial and banking system has brought growth and prosperity in many economies involved in the crisis. In fact, by applying a negative interest rate, the bank will be able to direct credit allocation to productive and priority sectors. On the other hand, this policy, along with the independence of the central bank and the non-interference of the government in creating liquidity and making money from it, can reduce the level of inflation. Iran is a developing country with high inflation, and the interest rate as a monetary policy will not be very effective in the economy and is determined by the monetary authorities under the government's rule. When governments face budget deficits due to sanctions and lack of revenue sources, they create money by relying on their supervision over the performance of the central bank and use it as a solution to earn money, Therefore, it fuels inflation in the society. Therefore, in this research, within the framework of the optimization model of the money demand function and the model of money in the utility function, taken from the study of Walsh (2003) and Sidrauski (1967) and its extension, we will investigate the behavior of negative interest rates on inflation and optimal money interest. The obtained results show that in the environment of money interest and inflation, with the application of negative nominal interest rate, the equilibrium path has a downward and decreasing trend, and in this situation, inflation and money interest will decrease in the long term. Therefore, the government has the ability to compensate for its budget deficit through solutions such as bonds and income tax, and in the long term, by reducing the money interest rate, it can reduce the level of inflation in the society and this will improve the social welfare of people.
