基于Web of Science核心合集数据库,采用文献计量学方法对中国探月工程(2003-2024)的科研产出进行系统分析.通过量化评估1023篇SCI论文的时空分布特征、国际合作态势及学术影响力,揭示了中国探月工程对全球月球科学研究的贡献.研究表明...基于Web of Science核心合集数据库,采用文献计量学方法对中国探月工程(2003-2024)的科研产出进行系统分析.通过量化评估1023篇SCI论文的时空分布特征、国际合作态势及学术影响力,揭示了中国探月工程对全球月球科学研究的贡献.研究表明,中国探月工程的实施使中国月球科学领域发文量占比提升至32.6%(2024年),工程产出论文的CNCI值(1.03)超越全球均值;科研突破集中于嫦娥四号(月球背面着陆巡视探测)与嫦娥五号(月球样品分析)任务,产出181篇高影响力论文;国际引用情况中,非中国机构占比显著增长,显示工程成果获得广泛国际认可.研究成果为评估中国深空探测计划的科学效益提供了定量依据.展开更多
Gauss radial basis functions(GRBF)are frequently employed in data fitting and machine learning.Their linear independence property can theoretically guarantee the avoidance of data redundancy.In this paper,one of the m...Gauss radial basis functions(GRBF)are frequently employed in data fitting and machine learning.Their linear independence property can theoretically guarantee the avoidance of data redundancy.In this paper,one of the main contributions is proving this property using linear algebra instead of profound knowledge.This makes it easy to read and understand this fundamental fact.The proof of linear independence of a set of Gauss functions relies on the constructing method for one-dimensional space and on the deducing method for higher dimensions.Additionally,under the condition of preserving the same moments between the original function and interpolating function,both the interpolating existence and uniqueness are proven for GRBF in one-dimensional space.The final work demonstrates the application of the GRBF method to locate lunar olivine.By combining preprocessed data using GRBF with the removing envelope curve method,a program is created to find the position of lunar olivine based on spectrum data,and the numerical experiment shows that it is an effective scheme.展开更多
The newly identified Jinlin crater in southern China lies on a hillside covered by a thick granite weathering crust.It appears as a slightly elliptical bowl-shaped depression with a diameter of 820-900 m.The structure...The newly identified Jinlin crater in southern China lies on a hillside covered by a thick granite weathering crust.It appears as a slightly elliptical bowl-shaped depression with a diameter of 820-900 m.The structure is a tilted impact crater,showing a maximum rim height difference of about 200 m and an apparent depth of 90 m.The crater rim is composed mainly of granite weathered soil and a small amount of granite fragments,while the bottom of the crater is filled with the same mixture of granite weathered soil and granite fragments.Planar deformation features in quartz grains from the rock fragments of the crater provide decisive evidence for its impact origin.The impact event is inferred to have taken place during the Holocene.展开更多
文摘基于Web of Science核心合集数据库,采用文献计量学方法对中国探月工程(2003-2024)的科研产出进行系统分析.通过量化评估1023篇SCI论文的时空分布特征、国际合作态势及学术影响力,揭示了中国探月工程对全球月球科学研究的贡献.研究表明,中国探月工程的实施使中国月球科学领域发文量占比提升至32.6%(2024年),工程产出论文的CNCI值(1.03)超越全球均值;科研突破集中于嫦娥四号(月球背面着陆巡视探测)与嫦娥五号(月球样品分析)任务,产出181篇高影响力论文;国际引用情况中,非中国机构占比显著增长,显示工程成果获得广泛国际认可.研究成果为评估中国深空探测计划的科学效益提供了定量依据.
基金Supported by the National Basic Research Program of China(2012CB025904)Zhengzhou Shengda University of Economics,Business and Management(SD-YB2025085)。
文摘Gauss radial basis functions(GRBF)are frequently employed in data fitting and machine learning.Their linear independence property can theoretically guarantee the avoidance of data redundancy.In this paper,one of the main contributions is proving this property using linear algebra instead of profound knowledge.This makes it easy to read and understand this fundamental fact.The proof of linear independence of a set of Gauss functions relies on the constructing method for one-dimensional space and on the deducing method for higher dimensions.Additionally,under the condition of preserving the same moments between the original function and interpolating function,both the interpolating existence and uniqueness are proven for GRBF in one-dimensional space.The final work demonstrates the application of the GRBF method to locate lunar olivine.By combining preprocessed data using GRBF with the removing envelope curve method,a program is created to find the position of lunar olivine based on spectrum data,and the numerical experiment shows that it is an effective scheme.
基金financial support from Shanghai Key Laboratory Novel Extreme Condition Materials,China(Grant No.22dz2260800)the Shanghai Science and Technology Committee,China(Grant No.22JC1410300).
文摘The newly identified Jinlin crater in southern China lies on a hillside covered by a thick granite weathering crust.It appears as a slightly elliptical bowl-shaped depression with a diameter of 820-900 m.The structure is a tilted impact crater,showing a maximum rim height difference of about 200 m and an apparent depth of 90 m.The crater rim is composed mainly of granite weathered soil and a small amount of granite fragments,while the bottom of the crater is filled with the same mixture of granite weathered soil and granite fragments.Planar deformation features in quartz grains from the rock fragments of the crater provide decisive evidence for its impact origin.The impact event is inferred to have taken place during the Holocene.
