A new genus and species, Pengzhongiella daicongchaoi, of the subtribe Batrisina (Batrisitae: Batrisini) is described from the Gaoligong Mountains, Yunnan, Southwest China. Adults were collected in a colony of Odontomachus monticola, and presented reduction of certain external characters and elongate appendages relating to myrmecophily. Description and illustrations of the habitus and major diagnostic features of the new taxon are provided; a brief discussion of its taxonomic placement is included. The new species also represents the first record of a Pselaphinae in association with an Odontomachus ant.

The wavelet neural network (WNN) is presented in the paper which based on the features of wavelet analysis and artificial neural network, and applied to predict the application of compressed air for an enterprise. The result shows that the precision of this model is quite effective. The model , therefore can be use to industry.

In this paper, the Xiali car Mcpherson type front suspension lower arm as the main research object, research the Xiali car converted to electric vehicles, the lower arm, internal stress distribution of structure on the lower arm, and on the basis of optimization design is carried out with ANSYS software. The last judgment andevaluation of prototype vehicle and electric vehicle arm stress, strain distribution and variation of structure on the lower arm, the topology optimization analysis is carried out, the lower arm to meet the strength and stiffness of the structure at the same time, meet the requirements of lightweight design.