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Showing 23 results for General Equilibrium

Ghasem Palouj, Seyed Fakhreddin Fakhrhosseini,
Volume 14, Issue 54 (2-2024)
Abstract

This study explores how monetary and fiscal policies influence certain macroeconomic variables through a multi-sector stochastic dynamic general equilibrium (DSGE) model that includes input-output (IO) analysis. The focus is on the industrial sector, taking into account the specific conditions for Iran. The research uses quarterly data from Spring 2006 to Spring 2023 and references the 2016 input-output table provided by the Central Bank. In the nonlinear model, the original 89 activities from the input-output table have been simplified to 9, which includes the industrial sector and eight other sectors. Model parameters are estimated based on previous studies of the Iranian economy and data from the input-output table. The model's effectiveness is assessed by comparing simulation results with real-world data, which shows a strong correlation. The simulations indicate that increases in the money supply result in only a small rise in both total and industrial output. This leads to a slight decrease in total employment, while employment in the industrial sector experiences a minor increase. Similarly, increases in government spending show tiny improvements in overall and industrial output, accompanied by a slight drop in total employment and a small rise in the industrial sector. The findings suggest that the effects of monetary and fiscal policy shocks on output and employment, when accounting for input-output relationships and dividing the economy into nine sectors, better reflect the realities of the Iranian economy. Given the minimal influence of these policies on boosting production and economic growth, it is essential for them to be targeted and supported by additional measures and strategies.
 
Mr Mostafa Gholami, Dr Zeinolabedin Sadeghi, Dr Seyyed Abdul Majid Jalaee Esfandabadi, Dr Mehdi Nejati,
Volume 15, Issue 57 (11-2024)
Abstract

One of the most important goals of policymakers is to increase the rate of economic growth while keeping the environment clean, which is possible through the use of modern technologies and the influx of capital into the country. Foreign direct investment (FDI) is an important source for promoting energy-efficient technologies around the world. One of the most important issues in today's world, especially in developing countries, including Iran, is securing the necessary capital to advance economic and environmental goals. For this reason, the present study examines the effects of foreign direct investment on macroeconomic and environmental variables using a computable general equilibrium static model. Two scenarios have been analyzed and examined as the effects of a doubling of FDI, one on the electricity sector and the other on the entire economy. The results showed that in both scenarios, economic growth increased and the general level of prices decreased, but the effect was greater in the second scenario. Electricity production also increased in both scenarios. But household welfare has decreased with increasing foreign direct investment. In the carbon emission variable, the pollution halo hypothesis is confirmed in the first scenario, and the pollution haven hypothesis is confirmed in the second scenario. It is suggested that the government, in addition to providing domestic platforms for the entry of foreign capital, also pay due attention to domestic capital owners.

Hamid Ghasemian, Abdolhamid Moarefi Mohammadi, Mohammadreza Heidari Khorasgani, Alimorad Sharifi,
Volume 16, Issue 59 (5-2025)
Abstract

Introduction
The growing energy imbalances in the country, which are caused by the higher growth rate of demand and consumption than supply and production, have made the need for planning to solve energy problems more evident than ever before. Undoubtedly, the continuation of the increasing trend of energy imbalances in the country's key carriers will cause economic, social and security effects and consequences. On the other hand, according to economic theories, trade liberalization increases efficiency, economies of scale, improves competition, improves the productivity of production factors and increases trade flows, and ultimately leads to economic growth. On the other hand, the Shanghai Cooperation Organization has great capacities in the energy sector (with about a quarter of the world's population, it controls 23% of oil, 55% of natural gas and 35% of the world's coal). Undoubtedly, the accession of observer countries, especially Iran, will increase the potential and capacities of this organization. Therefore, in this study, the impact of trade tariff reduction between Iran and the Shanghai Cooperation Organization on the balance of various energy types in Iran was scenario-based.

Method
No study has analyzed the impact of trade liberalization policy between the Shanghai Cooperation Organization member countries on the energy balance in Iran, and this study addresses this issue by using the computable general equilibrium (CGE) model. Also, among the computable general equilibrium models, the multi-regional general equilibrium model is specifically designed for analyzing world trade and can conduct research and studies on the international flow of goods and services and factors of production in a dynamic and static manner. Using a multi-regional general equilibrium model instead of a single-regional general equilibrium model has several advantages. One of the strengths of these models is their ability to help understand the relationship between sectors, countries, and factors of production on a global scale. Among the multi-regional general equilibrium models, the Energy-Based World Trade Analysis Project model provides diverse possibilities for world trade and energy-related research.
This study examines the impact of reducing trade tariffs between Iran and the Shanghai Cooperation Organization under scenarios of -25%, -50% and -100% on the balance of various energy sources in Iran, including crude oil and petroleum products, natural gas, coal and electricity. For this purpose, the necessary data were extracted from the Global Trade Analysis Project for Energy-Based (GTAP-E) version 10 database, which includes the Social Accounting Matrix (SAM) of 141 countries or regions and 65 sectors. Finally, the data were analyzed using MATLAB software.

Results and Discussion
The results showed that reducing trade tariffs between Iran and other member countries of the Shanghai Cooperation Organization, on the one hand, due to the ease of exporting energy carriers (especially crude oil and petroleum products) and on the other hand, due to the increased use of fossil energy exploration, production, and distribution technologies (especially crude oil and petroleum products, natural gas, and coal), leads to a decrease in fossil energy consumption and an increase in the net balance of fossil energy in Iran. In addition, the reduction of trade tariffs between Iran and other member states of the Shanghai Cooperation Organization, due to the possibility of increasing imports of goods and equipment that consume less energy needed in various domestic, industrial (light and heavy industries), transportation and agricultural sectors (tractors, combines, etc.), as well as increasing cooperation in the development of renewable energy technologies, will lead to an increase in the consumption of renewable energies and a decrease in the consumption of the energy carriers under consideration (especially electricity), and ultimately an increase in their net energy balance in Iran.
 

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