The characteristics of asteroids are vital parameters for planning asteroid exploration missions.These characteristics have been explored in close range for some typical asteroids,and are summarized in the article.Thi...The characteristics of asteroids are vital parameters for planning asteroid exploration missions.These characteristics have been explored in close range for some typical asteroids,and are summarized in the article.This allows estimates of the characteristics of asteroid 2016HO_(3),the target of the first Chinese asteroid exploration mission,Tianwen 2.We obtain 80 characteristic parameters in 9 categories and analyze their impacts on the mission.By comparing three close-range exploration modes,we provide advantages and disadvantages of each,and propose suitable methods for the exploration of 2016HO_(3).Owing to the weak gravity and small size of 2016HO_(3),a combination of multiple hovering positions and active orbiting is recommended for scientific exploration.展开更多
通过Web of Science、CNKI、ProQuest、中华数字书苑数据库和搜索引擎等第三方网站,采集截至2016年底的全球各大知名智库的学术影响力、知名度影响力和客观性数据。经过广泛调研,参照宾夕法尼亚大学《2015 Global Go To Think Tank Inde...通过Web of Science、CNKI、ProQuest、中华数字书苑数据库和搜索引擎等第三方网站,采集截至2016年底的全球各大知名智库的学术影响力、知名度影响力和客观性数据。经过广泛调研,参照宾夕法尼亚大学《2015 Global Go To Think Tank Index Report》和中国社会科学院《全球智库评价报告(2015)》,秉承公开性、完整性、代表性的原则筛选出169家全球著名智库,从基本情况、学术影响力、知名度影响力和同行评议四个角度来采集数据。本数据集可以用于全球著名智库的发展分析和研究,也可以用于对智库的建设现状以及其对公共政策影响力的评估。展开更多
文摘The characteristics of asteroids are vital parameters for planning asteroid exploration missions.These characteristics have been explored in close range for some typical asteroids,and are summarized in the article.This allows estimates of the characteristics of asteroid 2016HO_(3),the target of the first Chinese asteroid exploration mission,Tianwen 2.We obtain 80 characteristic parameters in 9 categories and analyze their impacts on the mission.By comparing three close-range exploration modes,we provide advantages and disadvantages of each,and propose suitable methods for the exploration of 2016HO_(3).Owing to the weak gravity and small size of 2016HO_(3),a combination of multiple hovering positions and active orbiting is recommended for scientific exploration.
文摘通过Web of Science、CNKI、ProQuest、中华数字书苑数据库和搜索引擎等第三方网站,采集截至2016年底的全球各大知名智库的学术影响力、知名度影响力和客观性数据。经过广泛调研,参照宾夕法尼亚大学《2015 Global Go To Think Tank Index Report》和中国社会科学院《全球智库评价报告(2015)》,秉承公开性、完整性、代表性的原则筛选出169家全球著名智库,从基本情况、学术影响力、知名度影响力和同行评议四个角度来采集数据。本数据集可以用于全球著名智库的发展分析和研究,也可以用于对智库的建设现状以及其对公共政策影响力的评估。
