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Copyright of Journal of Hebei University of Science & Technology is the property of Hebei University of Science & Technology, Journal of Hebei University of Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Irrigation & Drainage is the property of Journal of Irrigation & Drainage Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Bulletin of Soil & Water Conservation is the property of Bulletin of Soil & Water Conservation Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of South Architecture / Nanfang Jianzhu is the property of South Architecture Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of South Architecture / Nanfang Jianzhu is the property of South Architecture Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective The safety of drinking water is of great concern to economic and social development, and is a focus of research in all countries. The purpose of this paper is to analyze the research efforts of China in this sector in comparison with the rest of the world. Method The analysis was based on the CNKI database and the Web of Science. The CiteSpace visualization software was used to compare the research efforts of researchers in both China and the rest of the world in five perspectives: the number of publications, number of authors of each publication, affiliations, keywords and research frontiers. Result The earliest research on drinking water sources in China traced back to 1983, while the research in the rest of the world started in 1905. Researchers in the rest of the world combined have published more than their Chinese counterparts, indicating that the continued interest in drinking water in the world. In terms of the number of articles published by a sole author or co-authors, the international researchers have the edge. In terms of research topics and research methods, research in China can be divided into the following stages: proof-concept from 1983 to 1999, initial development from 2000 to 2008, prosperous development from 2009 to 2015, area-transition stage from 2016 to 2021. Conclusion Research on drinking water source in China and the rest of the world has a similar development history though it started much later in China. The research results have significant implications for theoretical development and practical applications of research results. [ABSTRACT FROM AUTHOR]

Building information modeling ( BIM ), as an important emerging technology in the construction industry, has developed rapidly in recent ten years. It is of great significance to make a comparative analysis of the research progress and trends in the field of BIM at home and abroad. International and domestic BIM research literatures from 2010 to 2020 are analyzed by means of co-word analysis and cluster analysis. With reference to the literatures retrieved from web of science database and CNKI database, scientific knowledge mappings are drawn with Citespace software. The two dimensions of international and domestic BIM research hotspots and the evolution trend of BIM research are compared and analyzed. The results show that international BIM research differs domestic BIM research in degree, and the correlation and research focus of each hot spot are different. The researches in international BIM may provide some references for the future development of BIM technology in China. [ABSTRACT FROM AUTHOR]