Highly Cited Papers from India and China
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GENERAL ARTICLES Highly cited papers from India and China Muthu Madhan, G. Chandrasekar and Subbiah Arunachalam* Research papers published by Chinese and Indian researchers during 1998–2007 and cited at least 100 times by end of 2009 are analysed. There were 776 papers with at least one author from India (amounting to 0.32% of all papers from India) and 2260 papers with at least one author from China (0.4% of all papers from China) that have gone on to be cited at least 100 times. We have identified prominent authors and institutions, journals used and fields of research. Although highly cited Chinese papers were cited on average less often than the highly cited papers from India, Chinese authors have been able to place their papers in high impact journals such as Nature and Science far more often than Indian authors. The Indian Institute of Science, Bangalore, Tata Insti- tute of Fundamental Research, Mumbai and Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore are the prominent Indian institutions, whereas universities in Hong Kong, Peking University, Tshing Hua University and several institutions under the Chinese Academy of Science dominate in China. In terms of citations, Chinese National Human Genome Centre Shanghai, Shanghai, tops the list. Keywords: Citations, impact factor, research papers, science and technology. THE geography of science is changing. Science and engi- Ronald Kostoff and his colleagues have estimated the neering research is becoming an increasingly interna- quantity, scope and quality of scientific research in both tional endeavour. More than ever before governments China and India12,13. According to Kostoff, from 1980 to around the world acknowledge the role of science and 2005, India’s output of research articles grew by a factor technology (S&T) in generating new jobs, economic of 2.5, from 10,000 to 25,000, and that during the same prosperity, response to national issues and global chal- period, Chinese research output grew by a factor of 100. lenges, and global competitiveness1. Today, in the output of research papers as seen from Web China and India are seen as emerging world leaders of Science, China is second only to USA. However, Kost- and there has been considerable interest in what happens off reports that if we look at INSPEC and Compendex, in the area of S&T in these two countries. A few years China has outpaced USA as well. This is because Web of ago, Demos, the London-based think tank, brought out a Science covers a large number of biomedical and life sci- series of reports on the theme Atlas of Science: Mapping ences journals and China’s strong suites are physics, the Geography of Science. Two of them were on science chemistry, materials science and engineering. in China and India2,3, and the third was on South Korea4. Shelton and Foland believe that although currently Together with Brazil and Russia the two Asian giants China lags behind USA and the European Union in most constitute the BRIC countries and together with Brazil S&T indicators (except the sheer output of research and South Africa they constitute the BASIC countries. papers), it will soon catch up and possibly excel USA and Thomson Reuters, the publishers of Web of Science and Europe14. It is not China alone that is expected to upset related databases, have brought out a series of studies on the current order in world science, and even displace science in the BRIC countries5–10. In his State of the USA from its position as the world’s number one, accord- Nation address delivered on 27 January 2010, the US ing to Leydesdorff and Wagner15. According to Leydes- President Barak Obama made a mention of both China dorff and Zhou16, China and South Korea are improving and India as countries trying hard to excel and he made a both in terms of the sheer volume of research publica- special reference to their emphasis on mathematics and tions and citation impact. science (education and research)11. A recent announcement from Nature Asia-Pacific pro- vides additional evidence, if any required, for China’s Muthu Madhan is in the Library at the National Institute of Technology, phenomenal growth in science. From a mere three papers Rourkela 769 008, India; G. Chandrasekar is in the National Institute of published by Chinese researchers in Nature and other Science Communication and Information Resources, New Delhi 110 012, monthly journals from the Nature Group in 1998, the India, and Subbiah Arunachalam is in the Centre for Internet and Society, No. 194, 2nd ‘C’ Cross, Domlur 2nd Stage, Bangalore 560 071, India. number rose to 93 in 2009. In contrast, India had *For correspondence. (e-mail: [email protected]) published two papers in 1998 and 18 in 2009. Over the 738 CURRENT SCIENCE, VOL. 99, NO. 6, 25 SEPTEMBER 2010 GENERAL ARTICLES 12 years China had published 375 papers compared to 63 tutions where they were written, we downloaded all from India (http://www.natureasia.com/en/publishing- papers published in 1998–2007 with an author address in index/historical.php?). India and China from Science Citation Index – Expanded Arunachalam17 had shown that many papers published section of Web of Science. We selected papers that have by Indian researchers in high impact factor journals are been cited at least 100 times up to a given date. These data cited much less often than the average article in those were then analysed using Visual FoxPro. journals and thus actually bring down the impact factor of 18 those journals. Balaram pointed out that ‘journal impact Analysis of data factors can be misleading with most papers in high pro- file journals accumulating only a modest number of cita- In Table 1, we present the number of papers published by tions’. Recently, Meneghini et al.19 have shown that Indian and Chinese researchers in all of science as seen papers from Latin America published in high impact fac- from Web of Science in each one of the years 1998–2007. tor journals are cited on average less often than the jour- We have also shown the number of papers from these two nal average. Campbell20 has shown how a high journal countries that have been cited at least 100 times. To see impact factor can be the skewed result of many citations the performance of India and China in perspective we of a few papers rather than the average level of the majo- have included similar data from two other BASIC coun- rity, reducing its value as an objective measure of an in- tries, viz. Brazil and South Africa; three OECD countries, dividual paper. A better measure of an individual paper viz. France, Japan and South Korea, and Israel, a small would be the actual number of times the paper is cited. In country with a good record in scientific research. Citation this article, we have estimated the number of papers from data were collected up to 22 November 2009 for India, India and China published in 10 years, 1998–2007, that China, South Korea and Brazil and up to 25 January 2010 have been cited at least a hundred times. for Israel, South Africa, Japan and France. Here again, one has to be aware that the average num- In all, India had published 235,679 papers in the 10 ber of citations to papers differs from field to field, and in years, and of these 758 were cited at least 100 times. certain areas the normal citation rates are rather low. As China had published 529,856 papers during the same pointed out by Pudovkin and Garfield21,22, average impact period, and of these 2,142 were cited at least 100 times. factor values greatly differ among subject categories and Among the eight countries considered, India and China an average paper in mathematics is cited eight times less have the lowest proportion of papers receiving 100 cita- frequently than an average paper in molecular biology or tions, viz. 0.321% and 0.404% respectively. In contrast, genetics. Essential Science Indicators23 provide informa- Israel (1.737%), France (1.585%) and Japan (1.071%) tion on average number of citations per paper for 22 major have a much higher proportion of papers receiving at fields. Obviously there would not be many mathematics least 100 citations. South Africa (0.790%), South Korea papers from India or China that would have been cited (0.501%) and Brazil (0.419%) have recorded a slightly hundred times or more. higher proportion of papers receiving at least 100 cita- tions than India and China. Israel’s performance, better Methodology than that of the three OECD countries (France, Japan and South Korea) is striking. With a view to finding the highly cited papers from India In Table 2, we present data on the number of papers and China, the authors of these papers as well as the insti- from India and China, the number of papers with more Table 1. Comparison of number of papers published during 1998–2007 and number of highly cited papers from India, China, South Korea, Brazil, Israel, South Africa, Japan and France India* China* South Korea* Brazil* Israel** South Africa** Japan** France** Year Papers A Papers A Papers A Papers A Papers A Papers A Papers A Papers A 1998 17,629 101 20,621 165 11,822 96 10,277 92 10,025 339 4047 52 77,678 1551 53,989 1558 1999 18,073 92 24,639 190 13,683 134 11,732 93 10,364 307 4239 55 79,541 1545 54,790 1459 2000 18,137 109 31,028 255 15,116 165 12,978 83 10,688 294 3998 50 82,217 1432 54,753 1430 2001 19,141 113 36,505 267 17,505 160 13,736 83 10,576 274 4194 47 81,053 1311 53,948 1253 2002 20,656 90 41,354 336 19,371 156 15,888 92 11,336 231 4428 28 85,272 1099 55,383 1071 2003 22,846 91 50,954 314 22,729 137 16,749 81 11,748 201 4388 30 89,081 841 56,579 849 2004 24,783 67 61,432 264 27,025 118 18,362 65 12,229 143 4704 47 90,278 655 59,322 686 2005 27,482 51 74,257 229 29,392 80 19,465 65 12,323 111 5041 28 89,343 411 67,517 513 2006 30,979 34 90,737 81 32,342 45 21,911 34 12,640 69 5687 25 92,928 236 64,769 308 2007 35,953 10 98,329 41 33,570 23 27,661 19 12,555 20 6510 11 89,766 100 66,043 177 Total 235,679 758 529,856 2142 222,555 1114 168,759 707 114,484 1989 47,236 373 857,157 9181 587,093 9304 A, Number of papers receiving at least 100 citations; *Data collected on 22 November 2009; **Data collected on 25 January 2010.