USTC-Pickers:a Unified Set of seismic phase pickers Transfer learned for China

Current popular deep learning seismic phase pickers like PhaseNet and EQTransformer suffer from performance drop in China.To mitigate this problem,we build a unified set of customized seismic phase pickers for different levels of use in China.We first train a base picker with the recently released DiTing dataset using the same U-Net architecture as PhaseNet.This base picker significantly outperforms the original PhaseNet and is generally suitable for entire China.Then,using different subsets of the DiTing data,we fine-tune the base picker to better adapt to different regions.In total,we provide 5 pickers for major tectonic blocks in China,33 pickers for provincial-level administrative regions,and 2 special pickers for the Capital area and the China Seismic Experimental Site.These pickers show improved performance in respective regions which they are customized for.They can be either directly integrated into national or regional seismic network operation or used as base models for further refinement for specific datasets.We anticipate that this picker set will facilitate earthquake monitoring in China.

A New Method to Evaluate the Corporation——Experimental Research on the Example of NetEase Company

Most of the Internet or e-commerce corporations have few earnings or even none. The traditional corporation valuation methods don not work well when encountering these types of corporations. Just in these backgrounds, a new method called CVBC model is brought forward to evaluate these types of corporations in our article, which is based on the customer lifetime value. In essence, it extends the concept of customer lifetime value and combined with the traditional financial methods, then creates a new valuation method. It can work well to the corporations, which have been said before. The principle, mathematical model of the method and the effect of the practical application are discussed in detail.

The effects of Kangxianling on renal fibrosis as assessed with a customized gene chip

OBJECTIVE:To determine the mechanisms by which Kangxianling(KXL) treats renal interstitial fibrosis using a customized gene chip.METHODS:Twelve out of 18 specific pathogen-free sprague dawley(SPF SD) rats underwent a unilateral ureteral occlusion.These rats were then randomly assigned into either the model unilateral ureteral obstruction(UUO) or Kangxianling(KXL) group.The other six rats were assigned to the sham-operated group.The UUO and sham-operated groups were given normal saline via intragastric administration,whereas the KXL group was given KXL via intragastric administration.All rats were sacrificed for renal tissue collection(i.e.left nephridial tissue),and the detection of genetic changes with the customized chip.RESULTS:Compared to the sham-operated group,transforming growth factor-β1(TGF-β1),Smad2,and Smad3 genes were significantly up-regulated in the UUO group,with >1.5-fold rise(P<0.01).The Smad7 gene was significantly reduced in the UUO versus sham-operated group,with a down-regulation of >1.5-fold(P<0.01).In the KXL group,TGF-β1,Smad2,and Smad3 genes were significantly reduced compared to the UUO group,with a down-regulation of >1.5-fold(P<0.01),whereas the Smad7 gene was significantly increased compared to the UUO group,with an up-regulation of >1.5-fold(P<0.01).CONCLUSION:It was found that KXL can significantly reduce the gene levels of TGF-β1,Smad2,and Smad3.Immunohistochemistry findings also revealed significantly lower TGF-β1/Smads-mediated gene transcription activity.These findings suggest that KXL may negatively regulate the TGF-β1/Smads signal pathway to inhibit the occurrence of renal fibrosis.