نتایج جستجو برای: energy demand

تعداد نتایج: 791370  

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: :مدیریت صنعتی 0
عالیه کاظمی استادیار گروه مدیریت صنعتی، دانشکده مدیریت، دانشگاه تهران، ایران محمد مدرس استاد دانشکده مهندسی صنایع دانشگاه صنعتی شریف، تهران، ایران محمدرضا مهرگان دانشیار گروه مدیریت صنعتی، دانشکده مدیریت، دانشگاه

the aim of this paper is to present the prediction model of the transport energy demand in iran. markov chain grey model (mcgm) is proposed to forecast the transport energy demand of iran. then it is compared with grey model (gm) and regression model. moreover, the mcgm forecasting model is used to forecast the annual gasoline demand of iran up to the year 1400. the aim of this paper is to pres...

Journal: :the international journal of humanities 2014
aliyeh kazemi mohammad modarres mohammad.reza mehregan

the aim of this paper is to develop a prediction model of energy demand of iran’s industrial sector. for that matter a markov chain grey model (mcgm) has been proposed to forecast such energy demand. to find the effectiveness of the proposed model, it is then compared with grey model (gm) and regression model. the comparison reveals that the mcgm model has higher precision than those of the gm ...

Journal: :Applied microbiology 1964
A F GAUDY M N BHATLA E T GAUDY

Four methods for determining substrate recoveries in studies concerned with the partition of substrate between sludge synthesis and respiration were investigated. An energy balance comparing chemical oxygen demand (COD) removed with the summation of oxygen uptake and the COD of the cells produced yielded average recoveries closer to 100% than any of the other three methods tested. The standard ...

Journal: :World Electric Vehicle Journal 2008

Journal: :Water science and technology : a journal of the International Association on Water Pollution Research 2006
P Aelterman K Rabaey P Clauwaert W Verstraete

Microbial fuel cells (MFCs) are emerging as promising technology for the treatment of wastewaters. The potential energy conversion efficiencies are examined. The rates of energy recovery (W/m3 reactor) are reviewed and evaluated. Some recent data relating to potato-processing wastewaters and a hospital wastewater effluent are reported. Finally, a set of process configurations in which MFCs coul...

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...

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This paper tries to demonstrate the importance of non-economic exogenous factors (Underlying Energy Demand Trend) when we estimate the industrial energy demand for Iran. The Structural Time Series Model (STSM) approach is used to model these unobservable factors. The Kalman filter and Maximum Likelihood methods allow us to estimate the value of the UEDT. This approach enables us to obtain more ...

Journal: :تحقیقات اقتصادی 0
ابوذر شاکری کارشناس ارشد رشتة توسعة اقتصادی و برنامه ریزی علیمراد شریفی عضو هیئت علمی و دانشیار گروه اقتصاد دانشگاه اصفهان

factor demand behavior such as energy demand has an important role in the economic analysis. this issue is a major concern in the developing countries (e.g. iran) which are benefited from vast energy resources. in this paper, the third generation of factor demand models is used to analyze the behavior of capital adjustment in the iranian manufacturing industries. the dataset covers the two-digi...

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...

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