[Objectives]This study was conducted to deeply analyze the research status in the field of soil fertility evaluation.[Methods]With the core journals of Peking University included in CNKI database from 2002 to 2021 as ...[Objectives]This study was conducted to deeply analyze the research status in the field of soil fertility evaluation.[Methods]With the core journals of Peking University included in CNKI database from 2002 to 2021 as the research object,papers were searched in the advanced search mode using SU=‘soil fertility’and SU=‘evaluation’as the retrieval subject terms and analyzed by the bibliometric research method,from three perspectives,namely,the annual number of papers published,the number of papers issued by authors and the number of highly cited papers.[Results]A total of 891 first authors issued 990 papers related to soil fertility evaluation in total from 2002 to 2021,with an average annual number of papers published at about 50,and the number of published papers showed a trend of rapidly increasing first and then gradually stabilizing.The top 13 authors published 3-4 papers,including Yang Xiaojuan,Chen Haisheng and Li Xinju(4 papers)ranking first.The top 10 papers with the highest citation frequency were published in 9 journals,respectively covering ecology,forestry,agriculture,geography,engineering and other fields,which shows that there are many kinds of journals focusing on the research field of soil fertility evaluation.[Conclusions]The results can provide reference for further research on soil fertility evaluation.展开更多
This paper investigated the current characteristics and changing trends of major journals on Chinese environmental and occupational medicine in order to promote the development of these journals. This study focused on...This paper investigated the current characteristics and changing trends of major journals on Chinese environmental and occupational medicine in order to promote the development of these journals. This study focused on the seven core journals in the area of environmental and occupational medicine listed on the Chinese Scientifi c and Technical Journal Citation Reports (2008 version). These journals were China Occupational Medicine, Chinese Journal of Industrial Hygiene and Occupational Diseases, Chinese Journal of Industrial Medicine, Industrial Health and Occupational Diseases, Journal of Environment and Health, Journal of Environmental and Occupational Medicine, Occupation and Health. Various observations were based on data from www.cnki.net and Chinese Scientif ic and Technical Journal Citation Reports (2008 version), including cover of the journal, issue period, exposure to the internet, level of open source, impact factor, cited half-life, web immediacy index and rate of downloads per year. The outcomes showed that in appearance, the overall characteristics were continuous improvement of the covers, issue period, and moving toward the internet. In terms of contents, all factors had been improving. Nevertheless the level of influence was not very stable. The use of internet and the level of resource openness still have a long way to go to meet the international standard. There is still a huge gap for improvement. The contents and the appearance both need to be improved to serve the ever developing environmental and occupational medicine career.展开更多
In order to grasp the research status of different fertilization modes in China s farmland more comprehensively, with papers in core journals of Chinese Peking University collected in CNKI database from 2003 to 2022 a...In order to grasp the research status of different fertilization modes in China s farmland more comprehensively, with papers in core journals of Chinese Peking University collected in CNKI database from 2003 to 2022 as the main research object, this paper analyzed the research status of different fertilization modes from the perspectives of annual number of published papers, published journals, keywords and highly cited papers applying the bibliometrics research method. This study provides reference for the research in this field.展开更多
运用CiteSpace软件,对2013—2023年中国知网CNKI和Web of Science核心期刊数据库收录的智能家居领域研究型论文进行可视化分析,为我国智能家居研究提供参考。研究发现:在各发文国家中,美国在智能家居领域的贡献最大,我国的研究虽然具有...运用CiteSpace软件,对2013—2023年中国知网CNKI和Web of Science核心期刊数据库收录的智能家居领域研究型论文进行可视化分析,为我国智能家居研究提供参考。研究发现:在各发文国家中,美国在智能家居领域的贡献最大,我国的研究虽然具有规模,但目前影响力有限。在作者和机构合作方面,国外机构之间的合作程度较高,我国机构之间合作程度有待加强。在研究热点和趋势方面,国内外研究基本围绕着物联网技术、云计算技术、远程控制等,早期国内研究更强调远程控制和数字家庭,而国外研究注重智能电网、传感器和意见反馈;后期国内研究侧重传感器技术和人工智能交互,国外研究则侧重于能源利用和隐私保护。展开更多
基金Supported by National Innovation and Entrepreneurship Training Program for College Students(202210664022)Natural Science Research Project of Guizhou Provincial Department of Education of Guizhou Province(QJZ[2022]067)Reform Project of Teaching Content and Curriculum System of Colleges and Universities in Guizhou Province(GZJG20220776).
文摘[Objectives]This study was conducted to deeply analyze the research status in the field of soil fertility evaluation.[Methods]With the core journals of Peking University included in CNKI database from 2002 to 2021 as the research object,papers were searched in the advanced search mode using SU=‘soil fertility’and SU=‘evaluation’as the retrieval subject terms and analyzed by the bibliometric research method,from three perspectives,namely,the annual number of papers published,the number of papers issued by authors and the number of highly cited papers.[Results]A total of 891 first authors issued 990 papers related to soil fertility evaluation in total from 2002 to 2021,with an average annual number of papers published at about 50,and the number of published papers showed a trend of rapidly increasing first and then gradually stabilizing.The top 13 authors published 3-4 papers,including Yang Xiaojuan,Chen Haisheng and Li Xinju(4 papers)ranking first.The top 10 papers with the highest citation frequency were published in 9 journals,respectively covering ecology,forestry,agriculture,geography,engineering and other fields,which shows that there are many kinds of journals focusing on the research field of soil fertility evaluation.[Conclusions]The results can provide reference for further research on soil fertility evaluation.
文摘This paper investigated the current characteristics and changing trends of major journals on Chinese environmental and occupational medicine in order to promote the development of these journals. This study focused on the seven core journals in the area of environmental and occupational medicine listed on the Chinese Scientifi c and Technical Journal Citation Reports (2008 version). These journals were China Occupational Medicine, Chinese Journal of Industrial Hygiene and Occupational Diseases, Chinese Journal of Industrial Medicine, Industrial Health and Occupational Diseases, Journal of Environment and Health, Journal of Environmental and Occupational Medicine, Occupation and Health. Various observations were based on data from www.cnki.net and Chinese Scientif ic and Technical Journal Citation Reports (2008 version), including cover of the journal, issue period, exposure to the internet, level of open source, impact factor, cited half-life, web immediacy index and rate of downloads per year. The outcomes showed that in appearance, the overall characteristics were continuous improvement of the covers, issue period, and moving toward the internet. In terms of contents, all factors had been improving. Nevertheless the level of influence was not very stable. The use of internet and the level of resource openness still have a long way to go to meet the international standard. There is still a huge gap for improvement. The contents and the appearance both need to be improved to serve the ever developing environmental and occupational medicine career.
基金Supported by Undergraduate Training Program for Innovation and Entrepreneurship of Guizhou Province(S202310664011)Natural Science Research Project of Guizhou Provincial Department of Education(QJJ[2022]067,QJJ[2023]043)Teaching Content and Curriculum System Reform Project of Colleges and Universities in Guizhou Province(GZJG20220776)。
文摘In order to grasp the research status of different fertilization modes in China s farmland more comprehensively, with papers in core journals of Chinese Peking University collected in CNKI database from 2003 to 2022 as the main research object, this paper analyzed the research status of different fertilization modes from the perspectives of annual number of published papers, published journals, keywords and highly cited papers applying the bibliometrics research method. This study provides reference for the research in this field.
文摘运用CiteSpace软件,对2013—2023年中国知网CNKI和Web of Science核心期刊数据库收录的智能家居领域研究型论文进行可视化分析,为我国智能家居研究提供参考。研究发现:在各发文国家中,美国在智能家居领域的贡献最大,我国的研究虽然具有规模,但目前影响力有限。在作者和机构合作方面,国外机构之间的合作程度较高,我国机构之间合作程度有待加强。在研究热点和趋势方面,国内外研究基本围绕着物联网技术、云计算技术、远程控制等,早期国内研究更强调远程控制和数字家庭,而国外研究注重智能电网、传感器和意见反馈;后期国内研究侧重传感器技术和人工智能交互,国外研究则侧重于能源利用和隐私保护。
