考虑如下用来描述浮游动物-营养物相互作用时滞微分方程模型

其中 是营养物浓度， 是浮游动物种群的度量，并且参数 为正常数. 如果 成立， 则该系统的正平衡点是全局吸引的. 也给出了正平衡点局部稳定的充分条件.

（编辑：摘要中有公式，但未能正常显示）

The differential delay model, which is introduced to simulate zooplankton-nutrient interaction, of the form is studied, where is the concentration of nutrient, is a measure of zooplankton population at time t and parameter are positive constants. If , and hold, then the positive steady state of this system is globally attractive. Some sufficient conditions on local stability of the steady state of the model are given.

(Editors: Formulas in the abstract can't be displayed normally. See the pdf file)