1Study on evaluation of geological conditions for underground coal gasification: Taking Zhuzhai minefield of Jiangsu province as an exampleZHAO Yue, HUANG Wengang, XU Qiang, PING Lihua, HUO Chao, YANG Haorui1-112Subsidence prediction model construction in inclined coal seam miningYAN Weitao, CHEN Junjie, YAN Yueguan12-163Study on enrichment zones and enrichment regularity of coalbed methane in Hebei provinceXIE Weidong, WANG Meng, HOU Xiaowei17-254Floor water inrush prediction of coal mine based on the fractal-vulnerability index method:A case of Wangxingzhuang mineLI Jianlin, WANG Hongfei, WANG Denglei, LI Zhiqiang26-315Evaluation of meteorological disaster emergency capability based on fuzzy Petri netLU Qiuqin, WANG Xuelin32-376Origin of the ground fissures in the lower Cretaceous Hanzhuang Formation from Jiyuan basin and its geological significanceWANG Min, LI Kainan, BAI Wanbei, CHANG Yuguang38-447Nitrogen nutrition diagnosis of winter wheat based on the UAV remote sensingLIU Changhua, MA Wenyu, CHEN Zhichao, WANG Chunyang, LU Junjun, YUE Xuezhi, WANG Zhe, FANG Zheng, MIAO Yuxin45-538Study on spatial-temporal dynamic change of cultivated land quantity and variation characteristics in Henan province during 1996-2103NIU Haipeng, LIU Changrao, XIAO Dongyang54-649Experimental research on precision of phrase range measurement under different environmental conditionsLI Chunyi, FENG Hailong65-7110Global sensitivity analysis of WOFOST model parameters based on EFAST methodCHEN Yanling, GU Xiaohe, GONG Adu72-7811Spatial-temporal evolution of water resources vulnerability in Hunan provinceYANG Qin, KE Yinghai, LI Xiaojuan, GONG Huili, ZOU Jun79-8512Study on nodular cast iron surface topography and abrasive wear in ultrasonic vibration assisted grindingXIANG Daohui, ZHOU Zhikun, LIU Zhongyun, YAO Yunlong, GUO Zhenhai86-9213Seamless switching control strategy of micro grid operation modeWANG Gang, CHEN Xiaomin93-10014Nonlinear behaviors of digitally controlled H-bridge inverterTAO Hui, ZHENG Zheng101-106,12315Design project of a high-voltage adjustable high-frequency switching power supplyWANG Hongqi, WAN Gege107-11216Research on comprehensive denoising algorithm for insulation monitoring signal of high voltage cables in coal mineMA Xinghe, WANG Weixing113-11717An energy-efficient routing protocol in low-duty-cycle wireless sensor networksXU Zhen, SONG Huahua, LIU Ya118-12318Experimental study on ultrasonic wave velocity change of fresh concrete under multiple vibration loadingsYANG Xiaolin, LI Shuanjie, CHU Huaibao, YAO Zhihui, YANG Jie, LIU Bao124-12819Numerical simulation and analysis of concrete shear wall with single sleeve connectionZHENG Guanyu, KUANG Zhiping, CHENG Yaoshun129-13520Fatigue characteristics of prestressed hollow slab under chloride ion corrosionDU Chaowei, ZHANG Changlin, ZHENG Yuanxun, LI Qingfu, MEN Bo136-143 