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OBJECTIVE RAD50-IL13 region has been recently identified as one of critical asthma susceptibility loci in genome-wide association studies, yet the role of these genetic variants or single-nucleotide polymorphisms (SNPs) in the risk of developing asthma in Northeastern Han Chinese remains largely unknown. METHODS We conducted an association study by(More)
In order to improve the fitting and forecasting precision and solve the problem that some data have less sensitivity leading to low simulation precision of partial least-squares regression model, particle swarm optimization algorithm is adopted to optimize the partial regression coefficient, and then partial least-squares regression model based on particle(More)
Keywords: Seasonal frozen soil Water–heat coupled movements Numerical simulation Finite difference method a b s t r a c t In view of the insufficiencies of existing research into soil water and heat movements in seasonally frozen soil regions, water–heat coupled movements in seasonally frozen soil were studied by using a numerical simulation method. On the(More)
The accurate and reliable prediction of groundwater depth is the basis of the sustainable utilization of regional groundwater resources. However, the complexity of the prediction has been ignored in previous studies of regional groundwater depth system analysis and prediction, making it difficult to realize the scientific management of groundwater(More)
Cultivating rice will get both obvious economic and social benefits, but extending the paddy field area blindly and extensive irrigation water management mode have also brought some negative effects. Therefore, determining the scale of paddy field development reasonably has become an important issue in the planning of regional farming. The future of the(More)
Wavelet transform can decompose the input signal into high and low frequency signal. The low frequency signal includes main performances of the signal. However, the high frequency signal contains many noises. Wavelet de-noising can be realized by reconstructing the rest signal after the high frequency signal is flatted. According to the effect of noise on(More)
The identification of freezing-thawing soil hydraulic properties is the basis and key problem of studying soil water movement. Current identifying methods of the properties have many limitations, such as big error, high uncertainty and low operability. Thus, the identifying method of freezing-thawing soil hydraulic properties was researched in the research.(More)