Đang chuẩn bị nút TẢI XUỐNG, xin hãy chờ
Tải xuống
Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài:Air pollution research: visualization of research activity using density-equalizing mapping and scientometric benchmarking procedures | Zell et al. Journal of Occupational Medicine and Toxicology 2010 5 5 http www.occup-med.eom content 5 1 5 JOURNAL OF OCCUPATIONAL MEDICINE ANDTOXICOLOGY RESEARCH Open Access Air pollution research visualization of research activity using density-equalizing mapping and scientometric benchmarking procedures Hanna Zell 1 David Quarcoo1 Cristian Scutaru1 2 Karin Vitzthum 1 2 Stefanie Uibel1 Norman Schoffel1 Stefanie Mache1 David A Groneberg1 and Michael F Spallek1 Abstract Background Due to constantly rising air pollution levels as well as an increasing awareness of the hazardousness of air pollutants new laws and rules have recently been passed. Although there has been a large amount of research on this topic bibliometric data is still to be collected. Thus this study provides a scientometric approach to the material published on this subject so far. Methods For this purpose data retrieved from the Web of Science provided by the Thomson Scientific Institute was analyzed and visualized both with density-equalizing methods and classic data-processing methods such as tables and charts. Results For the time span between 1955 and 2006 26 253 items were listed and related to the topic of air pollution published by 124 countries in 24 different languages. General citation activity has been constantly increasing since the beginning of the examined period. However beginning with the year 1991 citation levels have been rising exponentially each year reaching 39 220 citations in the year 2006. The United States the UK and Germany were the three most productive countries in the area with English and German ranked first and second in publishing languages followed by French. An article published by Dockery Pope Xu et al. was both the most cited in total numbers and in average citation rate. J. Schwartz was able to claim the highest total number of citations on his publications while D.W. Dockery has the highest citation rate per publication. As to the subject areas the items are .
