This study conducted a bibliometric analysis of 1251 articles related to Antarctic krill from 1960 to 2015, based on the Core Collection in Thomson Reuters＇ Web of Science. We analyzed the results from four aspects：...This study conducted a bibliometric analysis of 1251 articles related to Antarctic krill from 1960 to 2015, based on the Core Collection in Thomson Reuters＇ Web of Science. We analyzed the results from four aspects： annual distribution, Web of Science categories and the major journals, inter- national collaboration and author keywords. The Antarctic krill research has developed rapidly since 1978, with an increasing article output. The studies mostly focused on the fields of marine and freshwater biology, oceanography, and ecology. Polar Biology, Marine Ecology-Progress Series and Deep-Sea Research Part II-Topical Studies in Oceanography, were the top three journals to publish the Antarctic krill-related papers. Although Russia is the earliest state to report Antarctic krill, U.S.A. and England were leaders with the largest output quantity and the highest cooperation frequencies. The researches in PR China have taken a blooming since 2009 and will play a more and more important role in the world. The frequencies of author keywords were counted. The high-frequency keywords were further divided into four groups with cohesive subgroup analysis, which suggested the major themes. This paper depicts the existing publica- tions on Antarctic krill. Our goal is to serve a point of reference and provide the direction for the future work.展开更多
The aim of the paper is to identify and explore leading development situation within the research field related to student classroom engagement.Using knowledge mapping tools,this paper conducted the visualization anal...The aim of the paper is to identify and explore leading development situation within the research field related to student classroom engagement.Using knowledge mapping tools,this paper conducted the visualization analysis on internationalliteraturein relation to student classroom engagementfrom the Web of Science databases.By combination of the statistical data and visualizationmapping,this paper studied on the research relationship networks and status for the co-authors'countries/institutions,co-citation documents/journalsand co-occurring keywordsbased on the sample datafromliterature.The results indicate that the number ofpublished papershasincreased obviously and expanded graduallysince 2000.Main countries and institutions of researches were the UnitedStates,Australia,United Kingdom,Canada and China in order,and these countries had intense collaboration.The theoretical basis of the research come from education and teaching,psychology.The hotspots of researches fromthe global literature coveredvarious fields including achievement,motivation,behavior,education,performance.As a result of the multidisciplinary integration,many relevant internationalresearch constantly expanded the research scopes,which promoted the combination and development of theories.展开更多
Based on an urbanization research database,a bibliometric analysis of Chinese ecological environmental research on urbanization was conducted that examined output,focused fields,topics,theories and methods.Results sho...Based on an urbanization research database,a bibliometric analysis of Chinese ecological environmental research on urbanization was conducted that examined output,focused fields,topics,theories and methods.Results show that research output in this field has been increasing since 2005.Land and industry fields in resource research,economics in ecological research,and climate and urban environments in environmental research have been studied from 1992–2011.Keywords analysis discovered that ＂Land Use＂ and ＂Heat Island Effect＂ were major keywords,making up 0.15% and 0.09% of the total frequency,respectively.＂Heat Island Effect＂ and ＂Climate Change＂ were the most recent popular keywords.Main theories were derived from ecology,mathematics,resource environmental economics and environmental science.Ecological footprint has been a core theory since 2002.The stochastic impacts by regression on population,affluence and technology model（STIRPAT）,Environmental Kuznets Curve（EKC）,and slope,land use map,excluded area,urban area,transportation map and hillside area model（SLEUTH） are the latest popular theories.During 1992–2011,the main research methods can be divided into four groups： statistics（65.17%）,systems（13.11%）,mechanisms（11.79%） and evaluation（9.93%）.Grey System Analysis from system methods and rescaled range（R/S） analysis from evaluation are the latest popular methods.Topics from macro subfields,including land use,heat island effects,water resources and the agricultural ecological environment received more attention than micro subfields such as urban environmental health problems.As urbanization problems evolve,resource environmental economic comprehensive models will advance with modeling progress and some models,such as STIRPAT and land use change simulation models,will be developed for evaluation and simulation of the ecological environmental impacts of Chinese urbanization.展开更多
The spread of antibiotic resistance is a global threat,causing elevated death rates and economic costs.A growing number of studies have focused on the removal of antibiotic resistant bacteria(ARB)andantibiotic resista...The spread of antibiotic resistance is a global threat,causing elevated death rates and economic costs.A growing number of studies have focused on the removal of antibiotic resistant bacteria(ARB)andantibiotic resistance genes(ARGs)in environmental settings.However,summaries and reviews ofremoval techniques are limited.This study examined publications on ARB and ARGs removal from1998 to 2023 through a bibliometric approach based on the Web of Science database.Researchprogress during the past 26 years was analyzed by collecting annual publications,countries,journalsand keywords.The number of articles related to the removal of ARB and ARGs has increasedannually.The main types of ARB and ARGs,their environmental milieus and the most commonlystudied removal techniques were summarized by keyword clustering.The results revealed thattetracycline-and sulfonamide-resistant bacteria are the ARB of greatest concern;that sul1,sul2,andtetA are the most frequently studied ARGs;and that municipal sewage and drinking water are the moststudied ARB and ARGs transmission sites.For treatment techniques,adsorption technology is themost widely studied,and the selection of adsorption materials is particularly important,withnanomaterials and biomodified materials having great prospects for development.The combination ofmembrane filtration with advanced oxidation treatment or biodegradation technology is the mostpromising technology in this field.Our findings can inform future efforts to further reduce thedistribution risks of antibiotic resistance and improve removal techniques.展开更多
文摘This study conducted a bibliometric analysis of 1251 articles related to Antarctic krill from 1960 to 2015, based on the Core Collection in Thomson Reuters＇ Web of Science. We analyzed the results from four aspects： annual distribution, Web of Science categories and the major journals, inter- national collaboration and author keywords. The Antarctic krill research has developed rapidly since 1978, with an increasing article output. The studies mostly focused on the fields of marine and freshwater biology, oceanography, and ecology. Polar Biology, Marine Ecology-Progress Series and Deep-Sea Research Part II-Topical Studies in Oceanography, were the top three journals to publish the Antarctic krill-related papers. Although Russia is the earliest state to report Antarctic krill, U.S.A. and England were leaders with the largest output quantity and the highest cooperation frequencies. The researches in PR China have taken a blooming since 2009 and will play a more and more important role in the world. The frequencies of author keywords were counted. The high-frequency keywords were further divided into four groups with cohesive subgroup analysis, which suggested the major themes. This paper depicts the existing publica- tions on Antarctic krill. Our goal is to serve a point of reference and provide the direction for the future work.
基金This work was supported by the Research Project of Postgraduate Education Reform in Harbin Institute of Technology,Research Project of Postgraduate Education and Teaching Reform in Harbin Institute of Technology(Weihai).
文摘The aim of the paper is to identify and explore leading development situation within the research field related to student classroom engagement.Using knowledge mapping tools,this paper conducted the visualization analysis on internationalliteraturein relation to student classroom engagementfrom the Web of Science databases.By combination of the statistical data and visualizationmapping,this paper studied on the research relationship networks and status for the co-authors'countries/institutions,co-citation documents/journalsand co-occurring keywordsbased on the sample datafromliterature.The results indicate that the number ofpublished papershasincreased obviously and expanded graduallysince 2000.Main countries and institutions of researches were the UnitedStates,Australia,United Kingdom,Canada and China in order,and these countries had intense collaboration.The theoretical basis of the research come from education and teaching,psychology.The hotspots of researches fromthe global literature coveredvarious fields including achievement,motivation,behavior,education,performance.As a result of the multidisciplinary integration,many relevant internationalresearch constantly expanded the research scopes,which promoted the combination and development of theories.
基金National Natural Science Foundation of China(4127155641101117)
文摘Based on an urbanization research database,a bibliometric analysis of Chinese ecological environmental research on urbanization was conducted that examined output,focused fields,topics,theories and methods.Results show that research output in this field has been increasing since 2005.Land and industry fields in resource research,economics in ecological research,and climate and urban environments in environmental research have been studied from 1992–2011.Keywords analysis discovered that ＂Land Use＂ and ＂Heat Island Effect＂ were major keywords,making up 0.15% and 0.09% of the total frequency,respectively.＂Heat Island Effect＂ and ＂Climate Change＂ were the most recent popular keywords.Main theories were derived from ecology,mathematics,resource environmental economics and environmental science.Ecological footprint has been a core theory since 2002.The stochastic impacts by regression on population,affluence and technology model（STIRPAT）,Environmental Kuznets Curve（EKC）,and slope,land use map,excluded area,urban area,transportation map and hillside area model（SLEUTH） are the latest popular theories.During 1992–2011,the main research methods can be divided into four groups： statistics（65.17%）,systems（13.11%）,mechanisms（11.79%） and evaluation（9.93%）.Grey System Analysis from system methods and rescaled range（R/S） analysis from evaluation are the latest popular methods.Topics from macro subfields,including land use,heat island effects,water resources and the agricultural ecological environment received more attention than micro subfields such as urban environmental health problems.As urbanization problems evolve,resource environmental economic comprehensive models will advance with modeling progress and some models,such as STIRPAT and land use change simulation models,will be developed for evaluation and simulation of the ecological environmental impacts of Chinese urbanization.
基金supported by the NationalNatural Science Foundation of China(No.42307529)the Hebei NaturalScience Foundation(Nos.C2023110006 and E2023110001)+1 种基金the ResearchFund of Tianjin Key Laboratory of Aquatic Science and Technology(TJKLAST-PT-2021-04)the Cangzhou Institute of TiangongUniversity(No.TGCYY-F-0103).
文摘The spread of antibiotic resistance is a global threat,causing elevated death rates and economic costs.A growing number of studies have focused on the removal of antibiotic resistant bacteria(ARB)andantibiotic resistance genes(ARGs)in environmental settings.However,summaries and reviews ofremoval techniques are limited.This study examined publications on ARB and ARGs removal from1998 to 2023 through a bibliometric approach based on the Web of Science database.Researchprogress during the past 26 years was analyzed by collecting annual publications,countries,journalsand keywords.The number of articles related to the removal of ARB and ARGs has increasedannually.The main types of ARB and ARGs,their environmental milieus and the most commonlystudied removal techniques were summarized by keyword clustering.The results revealed thattetracycline-and sulfonamide-resistant bacteria are the ARB of greatest concern;that sul1,sul2,andtetA are the most frequently studied ARGs;and that municipal sewage and drinking water are the moststudied ARB and ARGs transmission sites.For treatment techniques,adsorption technology is themost widely studied,and the selection of adsorption materials is particularly important,withnanomaterials and biomodified materials having great prospects for development.The combination ofmembrane filtration with advanced oxidation treatment or biodegradation technology is the mostpromising technology in this field.Our findings can inform future efforts to further reduce thedistribution risks of antibiotic resistance and improve removal techniques.
