نتایج جستجو برای: electricity and computer

تعداد نتایج: 16868099  

Journal: Iranian Economic Review 2019

E nergy is one of the main and essential factors in economic growth. Electricity as one of the most important resources of energy supply for economic sectors on one hand, and as an index of welfare, on the other hand, is one of the economic development benchmarks. The growth of GDP will increase the demand for energy resources, including electricity. Hence, policymakers should pay at...

Renewable energy provides twenty percent of electricity generation worldwide. Hydroelectric power is the cheapest way to generate electricity today. It is a renewable source of energy and provides almost one-fifth of electricity in the world. Also, it generates electricity using a renewable natural resource and accounting for six percent of worldwide energy supply or about fifteen percent of th...

The investigation of electricity consumption is one of the main issues in the energy economics literature and has been considered empiricaly in recent years. So the main aim of this paper is to estimate the optimal electricity consumption in Iranian household sector during the period of 1990-2009. For achieving this, the empirical model has been estimated by panel data for three gropus of count...

The electricity industry that has been administrated with integrated vertical structure worldwide is now undergoing dramatic changes. Electricity industry is converting to a competitive industry in which market powers determine the price of electricity, there for it is important to identify market power. The Electricity Market of Iran and Iran Grid Management Company were established in 2003 an...

Ahmad Hajinezhad Emad Ziaee Mojtaba Tahani, Pouria Servati Younes Noorollahi,

In recent years, energy predicament and environmental problems in the world caused by fossil fuels combustion make us to pay serious attention to optimizing energy consumption and using renewable energies. One of the potential renewable energies which can be helpful in electricity generation is harness wind and water energy or using these two kinds of energy simultaneously. In this study, to pr...

Journal: :international journal of iron & steel society of iran 2009
f. forouzan a. najafizadeh a. kermanpur a. hedayati

an artificial neural network (ann) model is developed for the analysis, simulation, and prediction of the austenite reversion in the thermo-mechanical treatment of 304l austenitic stainless steel. the results of the ann model are in good agreement with the experimental data. the model is used to predict an appropriate annealing condition for austenite reversion through the martensite to austeni...

Nowadays, utilization of renewable energies for satisfying electricity demand has received more interest, and renewable electricity generation has been growing in the world. This study addresses the operational planning of a renewable electricity supply chain over a multi-period planning horizon. The purpose of this study is to maximize total profit and to optimize the operational decisions rel...

This research aims to model and study the techno-economic aspects of grid-connected distributed photovoltaic systems for use in the residential sector in several large cities of Iran including Esfahan, Bandar Abbas, Tehran, Tabriz, Shiraz, and Yazd. The dynamic modelling is performed using hourly metrological data and hourly electricity demand of households. The impacts of pricing policies and ...

Journal: :تحقیقات اقتصاد و توسعه کشاورزی ایران 0
مطهره بخشایش کارشناس ارشد دانشکدة اقتصاد و توسعة کشاورزی، دانشگاه تهران سعید یزدانی استاد دانشکدة اقتصاد و توسعة کشاورزی، دانشگاه تهران

nowadays, factor of energy besides other factors such as labor and capital plays an important role in agricultural production. energy is used as a factor for agricultural machines and instruments. important discussion about this subject is the reaction rate of energy demand to price variations of energy and other factors. so, this study estimates the functions of energy demand in agricultural s...

Shortage of electric power is a serious issue for production, especially for those that rely more on electricity. In this paper, we investigate the effect of non-distributed electricity (blackout) on Iranian industry. The sources are derived from two undistributed energy data collected from 39 distribution companies and database of industrial plants. The final panel data is from industrial plan...

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