energy consumption has been essential to societies; because societies depend on the rising provisions of energy to meet their requirements for goods and services and endorse sustainable development. the major source of energy nowadays is oil; oil consumption is dependent on oil availability, production and price. several arab countries are considered as major suppliers of oil in the world; cons...

due to problems in storage, transport and price fluctuation of fresh potato, production of ready-to-use products like french fries is of particular importance.one of the important steps in product processing is pre-drying.sticks with 0.8*0.8*8 cm dimensions were prepared, blanched with hot water at 75°c for 10 minutes and dried at four different air temperatures of 50, 60, 70 and 80°c to moistu...

With the development of global market and information network, international futures markets have become integrated. Price fluctuation of one futures market may cause related price fluctuation in another exchange. Many researches have shown that there is high correlation between international and domestic futures price fluctuation. However, quantitative research and the information system for a...

It is meaningful and of certain theoretical value for the development economy through analyzing fluctuation rules international oil prices forecasting future trend prices. By composing autoregressive integrated moving average (ARIMA) model combination model-generalized conditional heteroskedasticity (ARIMA-GARCH) prices, study shows that ARIMA (1,1,0)-GARCH (1,1) more suitable short-term with h...

Grain price and output fluctuation are the normal state of market economy. It is one of the most important economic researches to understand grain price and output fluctuation law, which provides theory basis for the macroeconomic regulation and control. According to the cobweb model theory, the relationship between citrus production and price is accord with the divergence type of cobweb model ...