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In this work, a prey-predator model with both state-dependent impulsive harvesting and constant rate harvesting is investigated, where the replenishment rate of prey and the harvesting rate are linearly related with the selected threshold. By first using the successor function method and differential equation geometry theory, the existence, uniqueness and asymptotic stability of the order-1 periodic...
Surplus by-product gas (SBPG) in a steel plant is the difference between gas production and consumption. Dynamic programming (DP) has been observed to be a useful method for SBPG dynamic allocation. However, in the SBPG allocation problem, standard dynamic programming (SDP) usually suffers from dimensionality. In this study, a novel dynamic programming method with a reduced state space algorithm (RSS-DP)...
The operation schedule of an oceangoing ship is influenced by wave and wind disturbances, and is therefore weather routing. The work shows the goal of finding a safe and time-saving route by meteorological obtained based on modified genetic algorithm. By improving selection operator of genetic algorithm the author achieves the goal of finding the optimal route more quickly and precisely. In the cross...
Hybrid Underwater Gliders (HUGs) are a new type of platform for ocean exploration, with characteristics of low noise, long endurance and high maneuverability. In order to enhance the communication quality of HUGs, the relation between the effective intensity of antenna signal and communication attitude is studied. This paper builds a mathematical model of the effective intensity of antenna signal...
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