1Study on the Risk Analysis and Countermeasures of Controllable Flight into Terrain Based on QAR over-limit eventsGUO Chaochao, ZHAO Huibing1-42Application Researching of High-pressure Spraying Technology in Dongguashan Copper MineZHANG Shaowu, LI Conghua, ZHANG Lianggui8-103Experimental Study on Liquid Die Forging of 2A14 Track ShoeNIU Haixia, ZHU Songbo, ZHANG Qiong, LI Lei11-14,184Design of Five-degree-of-freedom Sorting Manipulator Based on Machine VisionLIHao, CAI Rongxin, HU Zhunyang15-185Volume Correction Calculation of Horizontal Tank Under Different Liquid Levels Based on MATLABFENG Chao19-216Interpret the Application of Metaphor in Product DesignZHAO Weihui, YANG Chenyang22-23,417Structural Stability and Bonding Properties of Cluster Ti4PJING Runtian, FANG Zhigang, QIN Yu24-298Research on the Calculation Method of Carbon Emission of Highway Construction ProjectGONG Shunmei, YANG Xiangyi, LIU Faming30-349User Anonymous Password Cross-domain Authentication Method Based on Block Chain TechnologyWANG Jingfei42-45,5510Design and Research of Python Program Language Learning Platform Based on Wechat MiniprogramQIU Yuyan, LU Xiaodie, WU Fusheng46-5111Reasearch of Traffic OptimizationTechnology in Data Center Network Based on SDNZHANG Xizi, LIN Shuangqin56-5812Research on Influence of Buried Depth under Large Pipe Curtain on Surface Subsidence of Tunnel ConstructionXING Linbin, LI Yudong, ZHANG Min, LIANG Bin59-64,7413Analysis of the Influence of Karst Cave on the Stability of Water-rich and Weak Surrounding Rock Tunnel and its Treatment MeasuresLI Junku65-7014Application of Image Processing Technology in Concrete MaterialsLU Chenglong, LU Qiuling, LIU Cheng, WANG Donglin71-7415Analysis of the Decorative Art of the Roof of Mazu Palace in Fujian and Taiwan RegionsCHEN Zhiyu78-8216Research on Wiener Index of Single Circle GraphSHAO Yun83-84,9417The optimization of probability integral method and its application in geological hazard evaluationHAO Yaxun, GUO Tengxiang85-8818Study on Compatibility between Vector Norms and Matrix NormsTIAN Dongxia89-9119Research on the Application of Mooc in Colleges and Universities Basketball TeachingLIU Yu95-9720Application of Problem Orientation Combined with Mathematical Modeling in Teaching Methods of Mathematical PhysicsWANG Qiuling, ZHANG Kaiyin, LIU Yifei, FAN Qin, CUI Beichen103-106 