Assuming that the production rate,demand rate and deteriorating rate of each product are constant and deteriorating items have the common production cycle,the paper proves that the total cost function is convex and presents an algorithm to obtain the optimal production policy.

Using common trends and common cycles theory in a VAR(p) framework,a set of countries are said to have common and synchronous business cycle if the short-run and long-run dynamics are perfectly correlated.

The results show that when TN/TP changes within the range of 25∶1~12∶1,the period of algae production reduces and quantity of algae production increase.

Based on the fact that production cycle of the evaporator (NaCl 150,000tpa) of System No.

Markets develop daily, commodity sales are becoming into an unascertained information, and markets are diversified, enterprise production cycles tend to be unascertained.

The calculation of the parallel coefficient when defining the production cycle of technological stage,and determination of the subjective coefficient when de.

Joint determination of a supplier s optimal production period and selling price;

By wa y of strengthening equipment management,washing evaporator without steam shuttin g off,increasing vacuum in the last effect,controlling appropriate ratio of soli d to liquid and feeding fresh brine into the evaporator,production period of vac uum pan salt making is prolonged and economic result of the enterprise is also e nhanced.

The design objective of reconfigurable manufacturing systems(RMS) is to decide the production period,the sequence and the configuration for machining each member of a part family.