【Key words】 stochastic lead time; emergency ordering; order progress information; inventory model
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Market demand is stochastic, but lead-time is certainty;
市场需求随机、订货提前期确定；
So, time delays, parameter uncertainty and stochastic disturbances may affect the stability of the system, even lead to instability, oscillation or chaos phenomena.
时滞、参数不确定性和随机噪声都将在相当大的程度上影响神经网络的整体性能，产生振荡行为或其它失稳现象甚至出现混沌现象。
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