Pareto-optimal control of relative motion in the orbital maneuvering problem of spacecraft with finite thrust by ISHKOV S A, FILIPPOV G A, ZHOU Xiao, WANG Changqing

“…An algorithm for solving the Pareto-optimal control program for arbitrary boundary conditions and thrust control acceleration values in the standard time including maneuver time and total time is developed. …”
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Analysis of management system of provincial food safety standards based on 20 cities in China by FAN Lu, TANG Xin, SUN Jining, LV Mingrui, Yan Ye

“…ObjectiveThe current management system of provincial food safety standards were analyzed and suggestions were made.MethodsBased on the management system of provincial food safety standards in 20 provinces， the review committee， scope of provincial food safety standard， time limit for public comment， review process， re-audit were mainly analyzed.Results18 provinces have review committee and stipulated scope of provincial food safety standard to varying degrees. …”
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Polluted groundwater pump and treat system optimization based on weighted optimization method on the area by Fan CHEN, Zheming SHI, Yongfeng JIA, Yongge ZANG, Xinying LIAN, Yonghai JIANG, Zeyu RAN, Changjian SHANG

“…The results show that: Overall, the single-well mode has poor remediation efficiency, when focusing on capital cost, the double-well pumping scheme is better overall, when focusing on the standard time, the mitsui-well pumping scheme is better overall; the single-well mode with constant flow is better than the multi-well modes, if the pumping flow is reduced appropriately in the late stage of the multi-well modes, the total amount of water pumped can be reduced and the capital cost can be saved, the dynamic management of well groups can improve the remediation efficiency. …”
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Joint ground and underground gas extraction mode and its key technology for outburst coal seam group by Yongjiang ZHANG, Quanle ZOU, Huiming YANG, Zihan CHEN, Jianjun CAO, Zhiheng CHENG

“…In the long distance coal seam group of the Zhujixi Mine, the underground drilling quantity is reduced by about 60%, and the gas extraction standard time is shortened by about 40%.…”
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