نتایج جستجو برای: productivity of energy carriers
تعداد نتایج: 21247280 فیلتر نتایج به سال:
We study how total factor productivity (TFP), energy prices, and the Great Moderation are linked. First we estimate a joint stochastic process for the energy price and TFP and establish that until the second quarter of 1982, energy prices negatively affected productivity. This spillover has since disappeared. Second, we show that within the framework of a dynamic stochastic general equilibrium ...
Although the particle carriers of field-aligned currents (FACs) in the Earth’s magnetotail play an important role in the transfer of momentum and energy between the solar wind, magnetosphere, and ionosphere, the characteristics of the FAC carriers have been poorly understood. Taking advantage of multiinstrument magnetic field and plasma data collected by the four spacecraft of the Cluster const...
The real exchange rate indicates the ratio of the price of tradable goods to the price of non-tradable goods and is one of the key indicators in the Iranian economy that has undergone significant leaps in recent years. In the present study, the effects of real exchange rate shocks on energy intensity (as one of the important economic-environmental indicators) of Iran's economy is investigated w...
The real exchange rate indicates the ratio of the price of tradable goods to the price of non-tradable goods and is one of the key indicators in the Iranian economy that has undergone significant leaps in recent years. In the present study, the effects of real exchange rate shocks on energy intensity (as one of the important economic-environmental indicators) of Iran's economy is investigated w...
Graphene based optical devices are highly recommended and interested for integrated optical circuits. As a main component of an optical link, a photodetector based on graphene nano-ribbons is proposed and studied. A quantum transport model is presented for simulation of a graphene nano-ribbon (GNR) -based photo-transistor based on non-equilibrium Green’s function method. In the proposed model a...
During the past few years, modeling in agriculture has attracted considerable attention. New modeling methods including neural networks are employed in various industries, and it is necessary that their use in agriculture be also considered. This research addressed the trend of energy use in broiler farms in Alborz Province and sought to model the trend of energy consumption and production in t...
انرژی هستهای یکی از منابعی است که نقش عمدهای در تولید برق ایفا میکند. تحلیل روند سطح تقاضا و منابع عرضهی انرژی در جهان، توجه به روند تهی شدن منابع فسیلی در دهههای آینده و مزیتهای زیستمحیطی انرژی اتمی، از عواملی هستند که سبب شدهاند تا انرژی هستهای یکی از حاملهای قابلدسترس و مطمئن انرژی در جهان به شمار رود. از این رو بررسی تأثیرات انرژی هستهای بر رشد اقتصادی به منظور درک دلیل سرمایهگ...
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