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基于禁忌搜索算法的内燃机配气机构优化设计 被引量:7
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作者 李智 常晓萍 Lou Yigong 《农业机械学报》 EI CAS CSCD 北大核心 2005年第4期116-118,共3页
运用禁忌搜索算法和Matlab语言,对内燃机配气凸轮机构的动力学数学模型进行了仿真优化计算,结果与原设计相比,丰满系数提高了1.2 4 % ,动态最大正加速度在上升段下降了0 .87% ,在下降段上升了5 .2 3% ,动态最大负加速度下降了5 .93% ,... 运用禁忌搜索算法和Matlab语言,对内燃机配气凸轮机构的动力学数学模型进行了仿真优化计算,结果与原设计相比,丰满系数提高了1.2 4 % ,动态最大正加速度在上升段下降了0 .87% ,在下降段上升了5 .2 3% ,动态最大负加速度下降了5 .93% ,加速度变化趋于平稳。 展开更多
关键词 禁忌搜索算法 机构优化设计 内燃机 MATLAB语言 动力学数学模型 配气凸轮机构 优化计算 速度变化 遗传算法 加速度 下降段 上升 动态 平稳
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New Evidence on Export Price Elasticity from China and Six OECD Countries 被引量:2
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作者 Francesco Aiello Graziella Bonanno Alessia Via 《China & World Economy》 SCIE 2015年第6期56-78,共23页
This paper provides new evidence on export price elasticities by analyzing the cases of China, France, Germany, Italy, Japan, UK and the USA over the period 1990-2012. Estimates have been made using panel data techniq... This paper provides new evidence on export price elasticities by analyzing the cases of China, France, Germany, Italy, Japan, UK and the USA over the period 1990-2012. Estimates have been made using panel data techniques for non-stationary data. After demonstrating that long-run relationships are stable to any structural break, it is found that exports are significantly determined by foreign demand, with long-run income elasticity significantly higher than unity for China, Japan, Germany, the UK and the USA. Conversely, exports are price inelastic for most of the countries in the sample, in both the long run and the short run. The exception is France, whose export price elasticity is lower (higher) than unity in the short run (long run). 展开更多
关键词 competitive devaluation currency wars export price elasticity panel data
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