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广西师范大学学报(自然科学版) ›› 2020, Vol. 38 ›› Issue (4): 74-81.doi: 10.16088/j.issn.1001-6600.2020.04.009
李淑一, 韦煜明*, 彭华勤
LI Shuyi, WEI Yuming*, PENG Huaqin
摘要: 本文研究一类含Ornstein-Uhlenbeck 过程的随机SIS传染病模型,得到阈值Rs0, 并建立了疾病的灭绝性和持久性的判别条件:Rs0<1,疾病灭亡, Rs0>1,疾病持久。结果表明:环境的波动强度和回复速率会影响疾病的爆发, 波动强度越大或回复速率越小,会抑制疾病的爆发, 并通过数值模拟验证所得结果。
中图分类号:
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