نتایج جستجو برای: energy demand function

تعداد نتایج: 1925076  

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده علوم 1393

in this thesis, structural, electronical, and optical properties of inverse pervskite(ca3pbo) in cubic phase have been investigated.the calculation have been done based on density functional theory and according to generalized gradiant approximate (gga) as correlating potential. in order to calculate the configurations, implementing in the wien2k code have been used from 2013 version. first of ...

ژورنال: انرژی ایران 2017

Nowadays, demand for energy is one of the important and applicable issues in different countries. Energy demand is of great importance from the viewpoints devastating impact on the environment and in terms of economic costs. The household sector is the major consumer of energy study of the factors influencing the energy consumption can have beneficial results in terms of the application of appr...

Journal: :تحقیقات اقتصادی 0
سید حسین سقائیان نژاد محمد رضا علیپور جدی

knowledge of energyconsumption has many uses in industry. factors that are energy dependent have already been studied hence decision making on them are easier. energy demand studies of industry helps us to learn factors that are responsive to this demand. therefore planners can use these collected data in their decision making using the above factors. another use of energy demand can be used as...

Journal: :journal of agricultural science and technology 0
s. h. mosavi department of agricultural economics, faculty of agriculture, tarbiat modares university, tehran, islamic republic of iran. a. alipour department of agricultural economics, faculty of agriculture, tarbiat modares university, tehran, islamic republic of iran. n. shahvari department of agricultural economics, faculty of agriculture, tarbiat modares university, tehran, islamic republic of iran.

iran is one of the most energy-rich countries subsidizing energy carriers, especially in the agricultural sector, to the extent that the resulting growth is at the expense of the environment. this study tries to investigate the potential impacts of energy price reform on the agro-environment, based on the marginal abatement costs (macs) of emissions. firstly, the energy demand function of the a...

Journal: :اقتصاد و توسعه کشاورزی 0
محمدرضا پاکروان امید گیلانپور شیرین ظریف

liberalization of energy price increases costs of agricultural inputs and costs of agricultural production. all these changes may affect the overall competitiveness of domestic products with similar foreign products. as a result of that, total cost of agricultural products are increased and profitability are decreased. in this paper, energy consumption for producing corn were calculated using c...

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...

Petroleum (crude oil) is one of the most important resources of energy and its demand and consumption is growing while it is a non-renewable energy resource. Hence forecasting of its demand is necessary to plan appropriate strategies for managing future requirements. In this paper, three types of time series methods including univariate Seasonal ARIMA, Winters forecasting and Transfer Function-...

This study presents an optimal framework for the operation of integrated energy systems using demand response programs. The main goal of integrated energy systems is to optimally supply various demands using different energy carriers such as electricity, heating, and cooling. Considering the power market price, this work investigates the effects of multiple energy storage devices and demand res...

Journal: :اقتصاد و توسعه کشاورزی 0
سیدنعمت الله موسوی ذکریا فرج زاده فرزانه طاهری

energy is considered as an important input for agricultural products. a decrease in energy subsidy and its demand reduces agricultural outputs and raises the production costs. changes in production and costs may significantly affect welfare of the agricultural producers. the main objective of this study was to analyze the impact of increased energy prices (reduction in the subsidy) on the agric...

Journal: :international journal of agricultural management and development 2015
zahra ghaffari moghadam

in this study, yield-water and profit function was used to obtain water demand function in agriculture sector. the results showed that the ratio of actual to potential evapotranspiration had positive, significant effecton the ratio of actual to potential yield for wheat and barley. also, square ratio of actual to potential evapotranspiration had negative, significant relationship. after estimat...

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