At present,textbooks based on core literacy have become the inevitable demands of China’s curriculum reform,and the literacy of textbook goal construction is the key to the implementation of core literacy requirement...At present,textbooks based on core literacy have become the inevitable demands of China’s curriculum reform,and the literacy of textbook goal construction is the key to the implementation of core literacy requirements,which is a huge challenge for textbook compilers.In this paper,we use the visual metrology of the CiteSpace knowledge graph to analyze Chinese mathematics textbooks(1999-2024),hoping to guide the future direction of Chinese mathematics textbook research.展开更多
The sulfides of transitional metals chromium[1-3] and iron[4] are of great importance inmaterial and biology sciences due to their characteristic structures and properties．So the studyon the properties of Cr－S and F...The sulfides of transitional metals chromium[1-3] and iron[4] are of great importance inmaterial and biology sciences due to their characteristic structures and properties．So the studyon the properties of Cr－S and Fe－S clusters will give many contributions to the understandingof physical and chemical behavior of those compounds．展开更多
A new way of indexing and processing twig patterns in an XML documents is proposed in this paper. Every path in XML document can be transformed into a sequence of labels by Structure-Encoded that constructs a one-to-o...A new way of indexing and processing twig patterns in an XML documents is proposed in this paper. Every path in XML document can be transformed into a sequence of labels by Structure-Encoded that constructs a one-to-one correspondence between XML tree and sequence. Base on identifying characteristics of nodes in XML tree, the elements are classified and clustered. During query proceeding, the twig pattern is also transformed into its Structure-Encoded. By performing subsequence matching on the set of sequences in XML documents, all the occurrences of path in the XML documents are refined. Using the index, the numbers of elements retrieved are minimized. The search results with pertinent format provide more structure information without any false dismissals or false alarms. The index also supports keyword search Experiment results indicate the index has significantly efficiency with high precision.展开更多
为统计分析近年来国内外驾驶愤怒研究现状与热点,选取Web of Science(WOS)数据库1190篇相关论文以及中国知网(CNKI)数据库230篇相关论文作为数据源,借助文献计量学软件VoSviewer与CiteSpace生成知识图谱,并从载文量分布、作者与机构合...为统计分析近年来国内外驾驶愤怒研究现状与热点,选取Web of Science(WOS)数据库1190篇相关论文以及中国知网(CNKI)数据库230篇相关论文作为数据源,借助文献计量学软件VoSviewer与CiteSpace生成知识图谱,并从载文量分布、作者与机构合作、发表期刊、关键词聚类与突现等方面,系统分析驾驶愤怒领域内的研究现状、热点与趋势等。结果表明:相关文献载文量不断上升,国内外学术界对驾驶愤怒领域关注度越来越高;国际驾驶愤怒领域的跨单位合作比国内更为广泛;驾驶愤怒相关量表、驾驶愤怒影响因素、愤怒与危险/攻击性驾驶行为关系、驾驶愤怒识别、驾驶愤怒干预为目前驾驶愤怒领域5大研究热点;愤怒状态下的驾驶绩效、驾驶愤怒检测系统以及基于交通工程视角的驾驶愤怒管控等方面是未来的研究趋势。展开更多
Groundwater,as a critical component of the hydrological cycle,is essential for sustainable ecosystem development.To clarify the current status of domestic and overseas research,and to identify hotspots,frontier and fu...Groundwater,as a critical component of the hydrological cycle,is essential for sustainable ecosystem development.To clarify the current status of domestic and overseas research,and to identify hotspots,frontier and future trends of groundwater and ecology research,this study utilizes bibliometric methods and CiteSpace software to examine relevant published articles in the Web of Science(WOS)and CNKI databases from 1978 to 2022.Specifically,this study analyzes(1)the annual number of published papers;(2)research institutions;(3)keywords;and(4)evolution of research hotspots.The findings reveal that the United States,China,and Germany are the top three countries in groundwater and ecology research.International research hotspots mainly focus on microbial ecology,climate change,groundwater-surface water interactions in the hyporheic zone,biodiversity,and submarine groundwater discharge,while domestic research hotspots mainly focus on ecological water conveyance,ecological flow,groundwater development and utilization,groundwater pollution,and groundwater and ecological protection.Both domestic and international research hotspots exhibit interdisciplinary features with diverse research objects and assessment methods.Future research in this area is expected to focus on topics such as contamination,groundwater quality,framework,mechanism,spatial distribution,and dissolved organic matter.Additionally,the study of ecological recharge,ecological flow,ecological protection,water intake and use will continue to be the hot topics domestically.展开更多
文摘At present,textbooks based on core literacy have become the inevitable demands of China’s curriculum reform,and the literacy of textbook goal construction is the key to the implementation of core literacy requirements,which is a huge challenge for textbook compilers.In this paper,we use the visual metrology of the CiteSpace knowledge graph to analyze Chinese mathematics textbooks(1999-2024),hoping to guide the future direction of Chinese mathematics textbook research.
文摘The sulfides of transitional metals chromium[1-3] and iron[4] are of great importance inmaterial and biology sciences due to their characteristic structures and properties．So the studyon the properties of Cr－S and Fe－S clusters will give many contributions to the understandingof physical and chemical behavior of those compounds．
基金Supported by the National Natural Science Foundation of China (60473085)
文摘A new way of indexing and processing twig patterns in an XML documents is proposed in this paper. Every path in XML document can be transformed into a sequence of labels by Structure-Encoded that constructs a one-to-one correspondence between XML tree and sequence. Base on identifying characteristics of nodes in XML tree, the elements are classified and clustered. During query proceeding, the twig pattern is also transformed into its Structure-Encoded. By performing subsequence matching on the set of sequences in XML documents, all the occurrences of path in the XML documents are refined. Using the index, the numbers of elements retrieved are minimized. The search results with pertinent format provide more structure information without any false dismissals or false alarms. The index also supports keyword search Experiment results indicate the index has significantly efficiency with high precision.
文摘为统计分析近年来国内外驾驶愤怒研究现状与热点,选取Web of Science(WOS)数据库1190篇相关论文以及中国知网(CNKI)数据库230篇相关论文作为数据源,借助文献计量学软件VoSviewer与CiteSpace生成知识图谱,并从载文量分布、作者与机构合作、发表期刊、关键词聚类与突现等方面,系统分析驾驶愤怒领域内的研究现状、热点与趋势等。结果表明:相关文献载文量不断上升,国内外学术界对驾驶愤怒领域关注度越来越高;国际驾驶愤怒领域的跨单位合作比国内更为广泛;驾驶愤怒相关量表、驾驶愤怒影响因素、愤怒与危险/攻击性驾驶行为关系、驾驶愤怒识别、驾驶愤怒干预为目前驾驶愤怒领域5大研究热点;愤怒状态下的驾驶绩效、驾驶愤怒检测系统以及基于交通工程视角的驾驶愤怒管控等方面是未来的研究趋势。
基金the basic scientific research expense of the Institute of Hydrogeology and Environmental Geology,Chinese Academy of Geological Sciences(SK202119).
文摘Groundwater,as a critical component of the hydrological cycle,is essential for sustainable ecosystem development.To clarify the current status of domestic and overseas research,and to identify hotspots,frontier and future trends of groundwater and ecology research,this study utilizes bibliometric methods and CiteSpace software to examine relevant published articles in the Web of Science(WOS)and CNKI databases from 1978 to 2022.Specifically,this study analyzes(1)the annual number of published papers;(2)research institutions;(3)keywords;and(4)evolution of research hotspots.The findings reveal that the United States,China,and Germany are the top three countries in groundwater and ecology research.International research hotspots mainly focus on microbial ecology,climate change,groundwater-surface water interactions in the hyporheic zone,biodiversity,and submarine groundwater discharge,while domestic research hotspots mainly focus on ecological water conveyance,ecological flow,groundwater development and utilization,groundwater pollution,and groundwater and ecological protection.Both domestic and international research hotspots exhibit interdisciplinary features with diverse research objects and assessment methods.Future research in this area is expected to focus on topics such as contamination,groundwater quality,framework,mechanism,spatial distribution,and dissolved organic matter.Additionally,the study of ecological recharge,ecological flow,ecological protection,water intake and use will continue to be the hot topics domestically.
