Showing 24 results for Regression
Dr. Elham Vafaei, Mr. Mohammad Rezvani, Dr. Mahdi Pendar,
Volume 15, Issue 56 (8-2024)
Abstract
Due to the position of meat products in the food pyramid and its importance in maintaining people's health and that economic sanctions can have a significant effect on meat consumption through the channel of increasing production costs and increasing the price of meat, the purpose of this research is to investigate the existence of failure There is a structure in the preferences of the meat consumption basket of urban households using the parametric approach and the switching regression framework developed by Ohtani and Katayama (1986) in the period of 2001-2013. The results show a structural failure (change) in preferences suddenly in 2017 and after the withdrawal of the United States from the JCPOA. The results show that after the withdrawal of the United States from the JCPOA, the price of chicken meat has decreased and the price of fish has increased, so that chicken meat has changed from an attractive product to an inelastic product. This result shows that consumers have become dependent on chicken meat and are willing to pay more to buy it. In such a situation, it is important to have adequate and optimal monitoring of the price of chicken meat, because people are forced to pay any price for chicken meat, and the changes of this product can cause the consumption basket of urban households to fluctuate greatly. Also, the estimation of income elasticity shows that chicken meat has changed from a necessary commodity to a luxury commodity after the sanctions. Therefore, to support consumers, it will be the right decision to use income tools and policies that lead to increasing the liquidity of urban households.
Dc Azam Ahmadyan, Dr Reza Akbarian,
Volume 15, Issue 56 (8-2024)
Abstract
| Today, the importance of the effectiveness of economic growth on inflation is not hidden from anyone. The literature expresses different views about the effect of inflation on economic growth. Some studies have emphasized the existence of a positive relationship, some studies have emphasized the existence of a negative relationship, and some have considered the effect of inflation on economic growth to be neutral. In recent decades, Iranian economy has faced inflationary conditions that can affect economic growth. Macroeconomics uncertainties can also intensify the negative effect of inflation on economic growth. Considering the importance of the issue, in this article, the vulnerability of economic growth to inflation in the conditions of macroeconomic uncertainties is investigated. For this purpose, using time series data during 1370-1401, the dynamics of the effect of inflation on economic growth has been investigated, using the autoregression method with a distribution with an interval. Since inflation at different levels and thresholds can have a different effect on economic growth, the threshold effect of inflation has been investigated using the threshold regression method. Considering the different effect of inflation in macroeconomic uncertainty, the effect of inflation at the level and threshold on economic growth has been investigated once considering macroeconomic uncertainty and another time without considering macroeconomic uncertainty. E-GARCH method has been used to extract macroeconomic uncertainty. In the models examined in the article, uncertainty of exchange rate, uncertainty of liquidity and uncertainty of stock price index were considered. The findings indicate, inflation at the level without macroeconomic uncertainty has a positive effect on economic growth, but taking macroeconomic uncertainty into account, inflation at the level has a negative effect on economic growth. Also, considering macroeconomic uncertainty indicates that the negative effect of inflation on economic growth is intensified. |
Ebrahim Ghaed, Mohammad Taher Ahmadi Shadmehri, Mahdi Khodaparast Mashhadi, Narges Salehnia,
Volume 15, Issue 56 (8-2024)
Abstract
The main purpose of this study is to predicting the effects of fiscal policies on greenhouse emissions in Iran from 1991 to 2021. To achieve this, bayesian model averaging (BMA) and Bayesian vector autoregression (BVAR) approaches were employed. The results indicate that out of 14 fiscal policy variables, the top five models with the highest posterior probabilities were identified using the aforementioned methods. The most effective models included variables such as financial asset acquisitions, oil revenues, corporate taxes, wealth taxes, current expenditures, and other revenues. Subsequently, the impact of these variables on CO2 emissions was analyzed over 10 periods using the BVAR method. The impulse response function results revealed that shocks to the financial asset acquisitions, oil revenues, wealth taxes, current expenditures, and other revenues had positive effects on CO2 emissions, with the most significant impact stemming from shocks to financial asset acquisitions. Conversely, only shocks to the corporate taxes demonstrated a negative effect. Additionally, the variance decomposition of CO2 emission forecast errors indicated that the oil revenues and wealth taxes played the most significant roles in explaining forecast errors, with their contributions increasing during intermediate periods.
Hossein Nasrollahi,
Volume 15, Issue 58 (2-2025)
Abstract
Employment is one of the most important issues that any country faces. Employment plays a vital role not only for individuals but also for the economy as a whole, and provides a deep understanding of the labor market conditions of an economy. In this regard, the minimum wage is an important factor that affects the labor market. The literature on the minimum wage uses two labor market models. The standard competitive model, which predicts that the minimum wage will have negative employment effects. In other words, under conditions of perfect competition, economic theory suggests that a higher minimum wage will lead to job losses, and noncompetitive labor market models, which predict that the minimum wage will have positive employment effects. However, it is generally unclear whether minimum wages have a positive or negative effect on employment, or are ineffective. Therefore, the aim of this study is to examine the effects of the real minimum wage on employment in Iran, within the framework of a multiple regression model and OLS estimation during the period 1379-1400. The results of the regression analysis show that the increase in the real minimum wage has a significant negative effect on employment, so that with a one-unit increase in the real minimum wage, employment decreases by about 0.37 units. Therefore, taking the above into account, it is suggested that the increase in the minimum wage should be made as proportionate as possible to the Labor productivity in the economy
