Stochastic behaviors of an improved Gompertz tumor growth model with coupled two types noise.

Lv, Huijun; He, Guitian; Cheng, Hui; Peng, Yun

Lv, Huijun; He, Guitian; Cheng, Hui; Peng, Yun.

Afiliación

Lv H; College of Mathematics and Physics, Center for Applied Mathematics of Guangxi Minzu University, Nanning 530006, China.
He G; College of Mathematics and Physics, Center for Applied Mathematics of Guangxi Minzu University, Nanning 530006, China.
Cheng H; College of Mathematics and Physics, Center for Applied Mathematics of Guangxi Minzu University, Nanning 530006, China.
Peng Y; College of Mathematics and Physics, Center for Applied Mathematics of Guangxi Minzu University, Nanning 530006, China.

Heliyon ; 8(11): e11574, 2022 Nov.

Article en En | MEDLINE | ID: mdl-36406688

RESUMEN

In this work, an improved Gompertz tumor growth model has been introduced. The expressions of steady probability distributions (SPD) of stochastic Gompertz tumor growth models are studied by using the technique of Fokker-Planck equation (FPE), and their dynamic behaviors are also further investigated. Moreover, the expressions for mean, variance, skewness, as well as the mean first-passage time (MFPT) also have been derived. And the influence of noise intensity, correlation coefficient, and noise correlation time of SPD are further analyzed. It is worthy noting that the colored noise intensity has an important impact on SPD. Furthermore, adjusting birth and death parameters also significantly impact SPD, MFPT, mean, variance as well as skewness.

Palabras clave

Colored noise; Fokker-Planck equation; Improved Gompertz tumor growth model; Skewness

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Heliyon Año: 2022 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido

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