In this paper, we study a predator-prey system, the modified Holling-Tanner model with strong Allee effect.The existence and stability of the non-negative equilibria are discussed first.Several kinds of bifurcation phenomena, which the model may undergo, such as saddle-node bifurcation, Hopf TV Stands bifurcation, and Bogdanov-Takens bifurcation, a
The water quality of urban rivers is subject to fluctuation caused by rainstorm flood.The uncertainty of flooding in a dynamic environment brings about changes in river quality, presenting a significant challenge.Water samples were collected at 7 sampling sites in Handan City of China from January 2020 to August 2023, and Valance Panel 9 water qual
With the development of STREST marine economy, the exploitation of marine resources has gradually changed from single stereo exploitation to multi-layered stereo exploitation, and the intensity and density of exploitation have been increasing, so the marine ecological environment is facing great pressure.In order to alleviate the contradiction betw
A sophisticated investor must be having sensitivity for about information when they was invested in securities market.That information are trusted can be influenced a price change stock.The aim of examination is to analyze three independent variable that included earning pr share, dividend per share, and stock split in a partial manner or in simult