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关于一个Bernstein型插值过程收敛阶的点态估计 被引量:2
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作者 王淑云 孙毅 何甲兴 《吉林工业大学自然科学学报》 EI CAS CSCD 北大核心 2001年第1期43-46,共4页
主要研究了一个Bernstein型插值多项式Hn( f;x)对Cj[- 1 ,1 ] ( j=0或 1 )连续函数类的逼近阶 ,改进了文献 [1 ]的结果 。
关键词 Bernstein型插值多项式 逼近阶 收敛阶 总态估计
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Estimation of the Aircraft CO_2 Emissions of China's Civil Aviation during 1960-2009 被引量:1
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作者 HE Ji-Cheng XU Yu-Qing 《Advances in Climate Change Research》 SCIE 2012年第2期99-105,共7页
Based on data collected by Chinese Civil Aviation Statistic Center, the annual CO2 emissions of aircrafts during 1960-2009 were calculated, and the emission intensity and its dynamic characteristics were analyzed. The... Based on data collected by Chinese Civil Aviation Statistic Center, the annual CO2 emissions of aircrafts during 1960-2009 were calculated, and the emission intensity and its dynamic characteristics were analyzed. The results show that the total CO2 emissions of aircrafts in China increased from 120×10^3 t in 1960 to 41.44×10^6 t in 2009. The CO2 emission intensity decreased from 2.9 kg (converted t kra)-1 in 1960 to 0.96 kg (converted t km)-1 in 2009 at an average rate of 0.04 kg (converted t km)-I per year. The average share of CO2 emissions of aircrafts on the total CO2 emissions from the sector of transportation, storage and post was 6.6% during 1980-2005, and 0.25% on the total emissions from fossil fuel combustion during 1971-2008. 展开更多
关键词 China civil aviation energy consumption of aircraft C02 emissions
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