this study employs a gmdh neural network model, which has high capability in recognition of complicated non-linear trends especially with small samples, for modeling and predicting iranian gdp growth. first a fundamental model containing 7 independent variables together with dependent variable is designed and then by using deductive process and omission of one variable at a time, a total of 18 ...

Iran stands first both in production and export of Pistachio in the world and earns sizable income from its export. Despite such a position in global market, Farmers and traders in the country are suffering from a wide kind of bottlenecks. This study aimed to define the critical constraints and to suggest the best way to reduce them. Necessary data were collected through personal interview of r...

Among the main threats to Russian energy sector is high volatility of oil markets, which leads significant fluctuations in volume revenues received by and gas companies country’s budget due export hydrocarbon resources. It necessitates search for mechanisms aimed at minimizing this risk. Such should be a political economic nature. Russia can achieve reduction risks budgetary system through intr...

This study seeks to explain why crude oil prices fluctuate, the main cause being the quota regime, which characterises the OPEC agreements. Given that the Saudi oil supply is inelastic in the short term, a shock in the oil market is accommodated by an immediate price change. In contrast, a dominant firm behaviour in the long term causes an output change, which is accompanied by a smaller price ...

Abstract:Gas export is one of the considerable choices in gas consumption to obtain foreign ex-change direct income by the government. Gas can be transformed and exported by various forms such as LNG and GTL. All forms of gar transformation and its export row gas with a convertible coefficient. Therefore, gas export means the total gas export through pipelines, LNG on the other forms of g...