Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Wencai Zhao"'
Publikováno v:
Mathematics, Vol 12, Iss 15, p 2371 (2024)
The evolution of the population ecosystem is closely related to resources and the environment. Assuming that the environmental capacity of a predator population is positively correlated with the number of prey, and that the prey population has a shel
Externí odkaz:
https://doaj.org/article/2f4b2fc6dff04dd0a11325eff6e4e1d2
Publikováno v:
Fractal and Fractional, Vol 8, Iss 4, p 232 (2024)
In this paper, a generalized fractional three-species food chain model with delay is investigated. First, the existence of a positive equilibrium is discussed, and the sufficient conditions for global asymptotic stability are given. Second, through s
Externí odkaz:
https://doaj.org/article/69171b5983a74580a72ed9debeda0916
Publikováno v:
Results in Physics, Vol 54, Iss , Pp 107019- (2023)
This paper proposes a delayed feedback control strategy for a fractional ecological infectious disease system with infected predators. Firstly, for the uncontrolled system, the stability of each equilibrium is discussed. Choosing the gestational dela
Externí odkaz:
https://doaj.org/article/26e922d74c87407689642840cb03202e
Publikováno v:
Fractal and Fractional, Vol 7, Iss 7, p 533 (2023)
The fractional differential equation has a memory property and is suitable for biomathematical modeling. In this paper, a fractional SEQIR epidemic model with saturated incidence and vaccination is constructed. Firstly, for the deterministic fraction
Externí odkaz:
https://doaj.org/article/6ba1718cbf224cb19524f15592cf6602
Autor:
Lin Li, Wencai Zhao
Publikováno v:
Mathematical Biosciences and Engineering, Vol 18, Iss 3, Pp 2813-2831 (2021)
In this paper, a prey-predator model with modified Leslie-Gower and simplified Holling-type Ⅳ functional responses is proposed to study the dynamic behaviors. For the deterministic system, we analyze the permanence of the system and the stability o
Externí odkaz:
https://doaj.org/article/78face87e016421fb4e6f7df9be111f6
Autor:
Yang Chen, Wencai Zhao
Publikováno v:
Mathematical Biosciences and Engineering, Vol 17, Iss 5, Pp 5925-5943 (2020)
In this paper, a stochastic SIRS epidemic model with saturating contact rate is constructed. First, for the deterministic system, the stability of the equilibria is discussed by using eigenvalue theory. Second, for the stochastic system, the threshol
Externí odkaz:
https://doaj.org/article/272e00a77c0646daa173bdb83766abcd
Autor:
Yang Chen, Wencai Zhao
Publikováno v:
Advances in Difference Equations, Vol 2020, Iss 1, Pp 1-20 (2020)
Abstract This paper investigates a deterministic and stochastic SIQS epidemic model with vertical transmission and Beddington–DeAngelis incidence. Firstly, for the corresponding deterministic system, the global asymptotic stability of disease-free
Externí odkaz:
https://doaj.org/article/624269817f8242b2afdb8ca1ccdc9b2c
Autor:
Hao Qi, Wencai Zhao
Publikováno v:
Journal of Mathematics, Vol 2022 (2022)
In this study, the stability and bifurcation problems of a fractional food chain system with two kinds of delays are studied. Firstly, the nonnegative, bounded, and unique properties of the solutions of the system are proved. The asymptotic stability
Externí odkaz:
https://doaj.org/article/cfa1594ff3d94424a220b080685bb4b9
Autor:
Jie Li, Jinke Li, Yuancheng Cai, Dingyi Wu, Chunxia Guo, Wencai Zhao, Kunjie Tang, Yuhang Liu
Publikováno v:
Advances in Materials Science and Engineering, Vol 2022 (2022)
The metro tunnel construction mainly passes through the downtown area, including ground buildings, infrastructure, underground pipelines, existing subway lines, and station floors. However, it is very difficult to control the ground deformation, espe
Externí odkaz:
https://doaj.org/article/2cbf819588d64d53aae8850202fd4028
Publikováno v:
Advances in Difference Equations, Vol 2019, Iss 1, Pp 1-16 (2019)
Abstract In this paper, two stochastic SIRS epidemic models with standard incidence were proposed and investigated. For the non-autonomous periodic model, the sufficient criteria for extinction of the disease are obtained firstly. Then we show that t
Externí odkaz:
https://doaj.org/article/47fa39ec46fe45c08991da7eb309f44c