نتایج جستجو برای: energy price

تعداد نتایج: 743809  

2006
GABRIELLA MURATORE

In this paper we present a centralized model for managing, at the same time, the dayahead energy market and the reserve market in order to price through the market, beside energy, the overall cost of reliability and to assure that the power grid survives the failure of any single components, so to avoid extended blackouts. The model addresses, also, the very important point of long-term market ...

2015
Liyan Han Yimin Zhou Libo Yin

a r t i c l e i n f o The main purpose of this paper is to identify the effects of exogenous factors, which have been somewhat controversial , on the price links between the energy and agricultural commodity markets. Our study differs from other studies by employing multivariate normal mixture models to capture the structural properties of the price dependencies in the underlying states. This p...

The price of Iranian crude oil in different markets depends on the price of US crude oil. In recent months, the oil and gas industry and the sale of Iranian crude oil and the co-operation and investments of oil companies operating in the field of oil field development have halted. Therefore, examining the effects of US government policies on the oil market is very effective. The most important ...

2013
Taeyoon Yu Dong Sik Kim Sung-Yong Son

In this paper, for efficient energy consumption through the residential demand response in the smart grid, an optimization algorithm, which can provide a schedule plan for the home appliance usages, is proposed. In order to minimize the average electricity price based on the time-varying electricity price in conjunction with the peak hourly load, which decides the capacity of the electric suppl...

Journal: :محیط شناسی 0
داوود منظور دانشیار دانشکدۀ اقتصاد، دانشگاه امام صادق مجید فرمد دکتر مهندسی برق، دانشگاه تهران، دانشکدۀ مهندسی برق وحید آریان پور کارشناس ارشد انرژی، دانشگاه صنعتی شریف، دانشکدۀ مکانیک احسان الدین شفیعی دکتر مکانیک، دانشگاه صنعتی شریف، دانشکدۀ مهندسی مکانیک

introduction despite the abundant renewable energy sources, the iranian energy sector relies almost entirely on fossil fuel energy resources. power sector is dominant source of co2emissions and responsible for about 35% of total co2 emissions in the country. additionally, long-term electricity demand of iran is expected to grow quickly, which in turn requires extensive investment to meet the gr...

2017
Anelí Bongers

A recent strategy carried out by the aircraft industry to reduce the total cost of the new generation fighters has consisted in the development of a single airframe with different technical and operational specifications. This strategy has been designed to reduce costs in the Research, Design and Development phase with the ultimate objective of reducing the final unit price per aircraft. This i...

Journal: :Clinical chemistry 1995
H A Johnson

In estimating the cost-effectiveness of diagnostic procedures, it is helpful to treat diagnostic information as a commodity with a unit price. The amount of useful information provided by a test result can be measured in binary units (bits), and the unit price of the information produced by the test result can be expressed in dollars per bit in much the same way that the price of gold is given ...

The paper examines the issue of hedging in energy markets. The objective of this study is to select an optimal model that will provide the highest price risk reduction for the selected commodities. We apply the ordinary least squares methods, autoregressive model, autoregressive conditional heteroscedasticity and copula to calculate the appropriate dynamic minimum-variance hedge ratio. The obje...

Journal: :energy equipment and systems 0
seyed-hadi mozafarpoor-khoshrodi electrical engineering, najafabad branch, islamic azad university, najafabad, isfahan, iran ghazanfar shahgholian electrical engineering, najafabad branch, islamic azad university, najafabad, isfahan, iran

one of the main problems in wind energy conversion system (wecs) is how to achieve maxim­u­m output power in different wind speeds. maximum methods for maximum power point tracking in wind energy conversion syst­e­ms require the knowledge of system characteristics and mechanic sensors. so, using these methods practically will follow with high price and an abundant difficulties. in this paper, n...

Journal: :اقتصاد و توسعه کشاورزی 0
زهره احمدی حمیدرضا میرزایی خلیل آبادی

energy is one of major factors of productions in all of economic sectors, which have important effect on a country economy. the effect of increasing price of energy carriers on productions of economic sectors is inevitable. therefore, this research was conducted by using the input - output model and product forecasting. the study investigated the latest available input - output table in 1385. t...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید