From May 28th to June 1st, 2007, the Standardization Administration of the People's Republic of China (SAC) organized a series of cooperation activities with the American Institute of Standards and Technology ... From May 28th to June 1st, 2007, the Standardization Administration of the People's Republic of China (SAC) organized a series of cooperation activities with the American Institute of Standards and Technology (NIST) and the American National Standards Institute (ANSI).……展开更多
Q:H.E.Mauricio Macri was sworn in as the 53th president of Ar-gentina on 10 December 2015.Could you please give a brief account about the policies adopted by President Macri and their effect?A:In general,I think the c...Q:H.E.Mauricio Macri was sworn in as the 53th president of Ar-gentina on 10 December 2015.Could you please give a brief account about the policies adopted by President Macri and their effect?A:In general,I think the current policies adopted by Argentina are aiming at sorting out its own relations with other countries so that Argentina could once again integrate itself into展开更多
Based on the investigation of tight oil exploration and development in North America, the successful cases of tight oil exploration and development in North America are summarized. The geological differences between c...Based on the investigation of tight oil exploration and development in North America, the successful cases of tight oil exploration and development in North America are summarized. The geological differences between continental tight oil in China and marine tight oil in North America is analyzed to explore the technical strategies for the industrial development of continental tight oil in China. The experiences of large-scale exploration and profitable development of tight oil in North America can be taken as references from the following 6 perspectives, namely exploring new profitable strata in mature exploration areas, strengthening the economic evaluation of sweet spots and focusing on the investment for high-profitability sweet spots, optimizing the producing of tight oil reserves by means of repetitive fracturing and 3 D fracturing, optimizing drilling and completion technologies to reduce the cost, adopting commodity hedging to ensure the sustainable profit, and strengthening other resources exploration to improve the profit of whole project. In light of the high abundance of tight oil in China, we can draw on successful experience from North America, four suggestions are proposed in sight of the geological setting of China's lacustrine tight oil:(1) Evaluating the potential of tight oil resources and optimizing the strategic area for tight oil exploration;(2) selecting "sweet spot zone" and "sweet spot interval" accurately for precise and high efficient development;(3) adopting advanced tight oil fracturing technology to realize economic development;(4) innovating management system to promote the large-scale profitable development of tight oil.展开更多
Xinhua reported on October 28 that Latin America had been more resilient to the economic crisis by diversifying commercial and financial exchanges with Asian economies, with China as the main driver in the last three ...Xinhua reported on October 28 that Latin America had been more resilient to the economic crisis by diversifying commercial and financial exchanges with Asian economies, with China as the main driver in the last three years, said Angel Gurria, General Secretary of the Organization for Economic Cooperation and展开更多
This article investigates the impact of Chinese economic activities in Latin America on the national image of China in the region.Using economic and public opinion data from 17 Latin American countries from 2001 to 20...This article investigates the impact of Chinese economic activities in Latin America on the national image of China in the region.Using economic and public opinion data from 17 Latin American countries from 2001 to 2016,this work relates cross-national time-series variations regarding China’s image in Latin America to changes in the economic ties(such as trade,FDI,and contracts)between the perceiving countries and China.Controlling for the size of the economy and the level of its development,the statis-tical analysis indicates that trade surplus against China in Latin America has a positive effect on the public perceptions of China in the region,while Chinese FDI outflows to Latin America lead to a negative effect.The effects of Chinese contracts,imports,and exports tend not to be statistically significant.We also find less developed Latin American countries with low life expectancy and low educational attainment tend to have a more positive view of China than their richer counterparts in the region.Finally,we find that Latin American countries under presidents with left-wing ideology have a much more positive view of China than countries under presidents with other ideological preferences.Diplomatic relations with China and China’s soft power influence as indexed by the presence of Confucius Institutes do not exhibit a strong impact on China’s national image in Latin America,compared with the dominant political ideology in a Latin American country as reflected in the president’s ideology.展开更多
目的比较中国和美国新版儿童发育里程碑,为发育监测和筛查提供基本参考。方法对2018年3月—2021年11月在医院儿童保健科接受常规体检的437671名1~36个月的儿童,应用婴幼儿生长发育筛查测试(infant and toddler growth development scree...目的比较中国和美国新版儿童发育里程碑,为发育监测和筛查提供基本参考。方法对2018年3月—2021年11月在医院儿童保健科接受常规体检的437671名1~36个月的儿童,应用婴幼儿生长发育筛查测试(infant and toddler growth development screening test,ITGDST)工具对儿童的发育状况进行评估。采用75%的临界值计算相应发育项目的合格率。对中国和美国新版儿童发育里程碑进行比较。结果在美国2~36个月的10个月龄检查表中共有126个里程碑,其中有35个(27.8%)与ITGDST的项目完全匹配。在这些匹配项目中,有33个项目(94.3%)的通过率高于75%,而其他2个项目(5.7%)的通过率低于但接近75%。项目占比从高到低依次为运动领域(16项,45.7%)、语言(8项,22.9%)、认知(6项,17.1%)和社会交往(5项,14.3%)。中国儿童的发育里程碑有6项比美国儿童提前1~2个月达到。结论在匹配项目中,中国和美国2~36个月儿童发育里程碑的一致性较高。美国儿童发育里程碑的修订版可能也适用于发展中国家,纳入更多的月龄发育检查表可能有助于早期预警和早期干预。展开更多
文摘 From May 28th to June 1st, 2007, the Standardization Administration of the People's Republic of China (SAC) organized a series of cooperation activities with the American Institute of Standards and Technology (NIST) and the American National Standards Institute (ANSI).……
文摘Q:H.E.Mauricio Macri was sworn in as the 53th president of Ar-gentina on 10 December 2015.Could you please give a brief account about the policies adopted by President Macri and their effect?A:In general,I think the current policies adopted by Argentina are aiming at sorting out its own relations with other countries so that Argentina could once again integrate itself into
基金Supported by the China National Science and Technology Major Project(2016ZX05046,2017ZX05001)the National Key Basic Research and Development Program(973 Program),China(2014CB239000)
文摘Based on the investigation of tight oil exploration and development in North America, the successful cases of tight oil exploration and development in North America are summarized. The geological differences between continental tight oil in China and marine tight oil in North America is analyzed to explore the technical strategies for the industrial development of continental tight oil in China. The experiences of large-scale exploration and profitable development of tight oil in North America can be taken as references from the following 6 perspectives, namely exploring new profitable strata in mature exploration areas, strengthening the economic evaluation of sweet spots and focusing on the investment for high-profitability sweet spots, optimizing the producing of tight oil reserves by means of repetitive fracturing and 3 D fracturing, optimizing drilling and completion technologies to reduce the cost, adopting commodity hedging to ensure the sustainable profit, and strengthening other resources exploration to improve the profit of whole project. In light of the high abundance of tight oil in China, we can draw on successful experience from North America, four suggestions are proposed in sight of the geological setting of China's lacustrine tight oil:(1) Evaluating the potential of tight oil resources and optimizing the strategic area for tight oil exploration;(2) selecting "sweet spot zone" and "sweet spot interval" accurately for precise and high efficient development;(3) adopting advanced tight oil fracturing technology to realize economic development;(4) innovating management system to promote the large-scale profitable development of tight oil.
文摘Xinhua reported on October 28 that Latin America had been more resilient to the economic crisis by diversifying commercial and financial exchanges with Asian economies, with China as the main driver in the last three years, said Angel Gurria, General Secretary of the Organization for Economic Cooperation and
文摘This article investigates the impact of Chinese economic activities in Latin America on the national image of China in the region.Using economic and public opinion data from 17 Latin American countries from 2001 to 2016,this work relates cross-national time-series variations regarding China’s image in Latin America to changes in the economic ties(such as trade,FDI,and contracts)between the perceiving countries and China.Controlling for the size of the economy and the level of its development,the statis-tical analysis indicates that trade surplus against China in Latin America has a positive effect on the public perceptions of China in the region,while Chinese FDI outflows to Latin America lead to a negative effect.The effects of Chinese contracts,imports,and exports tend not to be statistically significant.We also find less developed Latin American countries with low life expectancy and low educational attainment tend to have a more positive view of China than their richer counterparts in the region.Finally,we find that Latin American countries under presidents with left-wing ideology have a much more positive view of China than countries under presidents with other ideological preferences.Diplomatic relations with China and China’s soft power influence as indexed by the presence of Confucius Institutes do not exhibit a strong impact on China’s national image in Latin America,compared with the dominant political ideology in a Latin American country as reflected in the president’s ideology.
文摘目的比较中国和美国新版儿童发育里程碑,为发育监测和筛查提供基本参考。方法对2018年3月—2021年11月在医院儿童保健科接受常规体检的437671名1~36个月的儿童,应用婴幼儿生长发育筛查测试(infant and toddler growth development screening test,ITGDST)工具对儿童的发育状况进行评估。采用75%的临界值计算相应发育项目的合格率。对中国和美国新版儿童发育里程碑进行比较。结果在美国2~36个月的10个月龄检查表中共有126个里程碑,其中有35个(27.8%)与ITGDST的项目完全匹配。在这些匹配项目中,有33个项目(94.3%)的通过率高于75%,而其他2个项目(5.7%)的通过率低于但接近75%。项目占比从高到低依次为运动领域(16项,45.7%)、语言(8项,22.9%)、认知(6项,17.1%)和社会交往(5项,14.3%)。中国儿童的发育里程碑有6项比美国儿童提前1~2个月达到。结论在匹配项目中,中国和美国2~36个月儿童发育里程碑的一致性较高。美国儿童发育里程碑的修订版可能也适用于发展中国家,纳入更多的月龄发育检查表可能有助于早期预警和早期干预。
