Mohammad Ali Molaei; Ali Dehghani; Samaneh Hossein Zadeh
Volume 5, Issue 19 , June 2015, , Pages 40-25
Abstract
This study aims at exploring the relationship between energy consumption/efficiency and production growth in manufacturing agencies producing transportation vehicles in 1995-2009 using Granjer, Hsiao’s Granger, Toda-Yamamoto causality and DPD approach. The results of the model show that in these ...
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This study aims at exploring the relationship between energy consumption/efficiency and production growth in manufacturing agencies producing transportation vehicles in 1995-2009 using Granjer, Hsiao’s Granger, Toda-Yamamoto causality and DPD approach. The results of the model show that in these companies there is a one-tailed causal correlation between production value and energy consumption/efficiency and the given correlation is verified in both of the causal approaches. Similarly, the estimation of the model using DPD approach shows that there is a significant positive correlation between energy consumption and the value of the product in big factories producing transportation vehicles. The results also show that compared with an increase in the employment rate or energy consumption/efficiency, an increase in investment in these factories has a more significant effect on the value of the products in these agencies. This indicates that changes in production technology from labor or energy intensive to investment can lead to an increase in the value of products in agencies producing transportation vehicles in Iran.
Mohammad Ali Molaei; ali Dehghani
Volume 1, Issue 4 , December 2012, , Pages 74-55
Abstract
The main objective of this paper is to investigate the effect of research and development expenditures on the Iranian industry market Share over the period of 1995:1-2007:4. For this purpose, we convert the annual time series data to the seasonal time series data by using of JMALTI econometric software. ...
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The main objective of this paper is to investigate the effect of research and development expenditures on the Iranian industry market Share over the period of 1995:1-2007:4. For this purpose, we convert the annual time series data to the seasonal time series data by using of JMALTI econometric software. The main model of this paper has been estimated by nonlinear LSTAR approach. The result of this study reveals that there is nonlinear positive and significant relationship between research and development expenditures and market share of Iranian industry sector.
