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Xiao-Yi Ma
6Publications
1H-index
4Citations
Publications 6
Newest
#1Rong-Heng ZhaoH-Index: 1
Last.Xiao-Yi MaH-Index: 1
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Due to the influence of topographic drops, a large elevation difference often occurs in the middle and lower sections of the main pipe of a gravity-driven irrigation pipe network (GDIPN) system. This elevation difference must be reduced appropriately through pressure reduction facilities (pressure-regulating ponds (PRPs) or pressure-reducing valves (PRVs)). The number and locations of PRPs are crucial factors in regulating and balancing the pressure head of the main pipe of a GDIPN system as wel...
#1Rong-Heng ZhaoH-Index: 1
#2Wu-Quan HeH-Index: 1
Last.Xiao-Yi MaH-Index: 1
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A synchronous optimization method for self-pressure drip irrigation pipe network system is proposed. We have generalized the optimization design problem of the system and have established the mathematical models for the simultaneous optimization design of pipeline layout and pipe diameters. A genetic algorithm based on the infeasibility degree of the solution was used to solve the model. A typical example is used to validate the presented method. The method exhibits effective performance in the ...
#1Yi-Bo LiH-Index: 2
#2Ye LiuH-Index: 1
Last.Xiao-Yi MaH-Index: 1
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The accurate estimation of soil hydraulic parameters (θs, α, n, and Ks) of the van Genuchten–Mualem model has attracted considerable attention. In this study, we proposed a new two-step inversion method, which first estimated the hydraulic parameter θs using objective function by the final water content, and subsequently estimated the soil hydraulic parameters α, n, and Ks, using a vector-evaluated genetic algorithm and particle swarm optimization (VEGA-PSO) method based on objective functions b...
#1Wei-Bo NieH-Index: 2
#2Yi-Bo LiH-Index: 2
Last.Xiao-Yi MaH-Index: 1
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Obtaining reliable information on the wetting front depth of soil is beneficial to the understanding of one-dimensional (1D) vertical infiltration under border irrigation. This paper presents an approximate explicit solution to the Green-Ampt (GA) infiltration model for estimating the wetting front depth. Moreover, the model proposed in this study, the GA model, the Ali model, and the Stone model were validated and evaluated using laboratory experimental data and HYDRUS-1D simulation. Statistica...
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