, so that the system operates stably, and the deviation between supply and demand of aquatic products smoothly tracks the … pre-given target. It defines the supply and demand change model, and researches the impact of parameter selection in this … between supply and demand over time, and the price fluctuations in the neighbouring two periods are broadly consistent. The …

Based on the classification of spare parts and the research results of the demand of spare parts, a three … characteristics, the cost axis classified by ABC method, and the demand axis classified by the demand of the spare parts of …

We define the category of agricultural products, and introduce the demand standard of population for agricultural … demand of agricultural products, the logistics demand and cost of agricultural products in Zhengzhou City in the year 2010. …

production or input. With the use of graphic examples to describe the partial effects of subsidies on supply and demand, the … elasticity for supply and demand of input (the more responsive supply and demand are to changes in the price of the input), the … the use of that particular input; three, for a given demand curve, a shallow supply curve (reflecting a large price …

concept of public goods, this article analyzes the status quo and layers of demand of rural public goods in western ethnic … minority areas: the demand of rural public goods in ethnic minority areas shows "pyramid" structure, that is, the most basic …-management-based rural public goods. Finally the countermeasures for achieving effective demand of rural public goods are put forward as …

Features of farmers' professional cooperatives in China are introduced. The establishment of these organizations is …