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	Influencing factors of manufacturing agglomeration in the Beijing-Tianjin-Hebei region based on enterprise big data 期刊论文 OAI收割 JOURNAL OF GEOGRAPHICAL SCIENCES, 2022, 卷号: 32, 期号: 10, 页码: 2105-2128 作者: Huang Yujin; Sheng Kerong; Sun Wei \| 收藏 \| 浏览/下载：39/0 \| 提交时间：2022/11/09 manufacturing agglomeration hurdle model DO index Beijing-Tianjin-Hebei region
	Influencing factors of manufacturing agglomeration in the Beijing-Tianjin-Hebei region based on enterprise big data 期刊论文 OAI收割 JOURNAL OF GEOGRAPHICAL SCIENCES, 2022, 卷号: 32, 期号: 10, 页码: 2105-2128 作者: Huang Yujin; Sheng Kerong; Sun Wei \| 收藏 \| 浏览/下载：36/0 \| 提交时间：2022/11/09 manufacturing agglomeration hurdle model DO index Beijing-Tianjin-Hebei region
	Food away from home in Beijing: Effects of wealth, time and "free" meals SCI/SSCI论文 OAI收割 2010 Bai J. F.; Wahl T. I.; Lohmar B. T.; Huang J. K. 收藏 \| 浏览/下载：26/0 \| 提交时间：2012/06/08 Becker Box-Cox double-hurdle estimation Chinese food expenditures Food away from home Hosted meal away-from-home double-hurdle model limited dependent-variables tobit estimator working wives urban china expenditure consumption robustness allocation
	Optimizing control mode of optical payloads based on multi-population genetic algorithm (EI CONFERENCE) 会议论文 OAI收割 2009 IEEE International Conference on Mechatronics and Automation, ICMA 2009, August 9, 2009 - August 12, 2009, Changchun, China Xu W.; Jin G. 收藏 \| 浏览/下载：24/0 \| 提交时间：2013/03/25 Optimizing the control mode of optical payload could improve the payload's work efficiency. When the mathematic model of payload's control mode was established optimization problems could be boiled down to seek the maximal value of the function with many variables. This paper put forward a calculational method to base the mathematic model the calculational method was multi-population genetic algorithm (MPGA). After the 0-1 variables and real multidimensional ones had been coded separately the algorithm established the populations independently made the multidimensional variables as the centrosome and combined 0-1 ones to work out the maximal value of the function which was established to describe the control mode of the optical payload. Moreover the emulational experiment had been done with the material arithmetic operators. The result indicates that the method using MPGA can hurdle the disadvantage of traditional ones which calculate slowly and get into local best value trap easily . It has the characters that not only fits large scale area scout but also gets the best value in full scale rapidly so this algorithm can better satisfy the technology demand for the intelligent control of optical payload. 2009 IEEE.