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Year : 2014  |  Volume : 41  |  Issue : 1  |  Page : 1-2


Department of Urology, KLE University's JN Medical College, KLES Kidney Foundation, KLES Dr. Prabhakar Kore Hospital & MRC, Belgaum, Karnataka, India

Date of Web Publication7-Feb-2014

Correspondence Address:
Rajendra Nerli
Department of Urology, KLE University's JN Medical College, KLES Kidney Foundation, KLES Dr. Prabhakar Kore Hospital & MRC, Belgaum, Karnataka
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0974-5009.126686

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How to cite this article:
Nerli R. H-Index. J Sci Soc 2014;41:1-2

How to cite this URL:
Nerli R. H-Index. J Sci Soc [serial online] 2014 [cited 2020 Sep 18];41:1-2. Available from: http://www.jscisociety.com/text.asp?2014/41/1/1/126686

The Prime Minister's Office released an official announcement on 16 th November 2013 conferring Bharat Ratna to Sachin Tendulkar. The legendary cricketer, who played his final innings, at Wankhede, would be the first sportsperson to be honored with the award. Tendulkar bowed out of cricket as the most successful batsman in international cricket with 15,921 runs in 200 tests. In his 1-day international career, Tendulkar amassed 18,426 runs in 463 matches. The Mumbaikar is the only batsman in international cricket to score 100 centuries and also the first batsman to get double hundred in one-dayers. Bharat Ratna is India's highest civilian award, conferred for performance of highest order in any field of human endeavor.

The President of India will also confer the Bharat Ratna on Professor Chintamani Nagesa Ramachandra (CNR) Rao (89), commonly known as CNR Rao. Professor Rao, who serves as the head of the Scientific Advisory Council to the Prime Minister of India, has published more than 1500 research papers in his career spanning over 5 decades. He is also one of the few scientists in the world who is a member of all major scientific academies in the world. He is the first Indian in April this year to reach the H-index of 100, reflecting the enormity of the body of his published research work. Professor Rao, incidentally, is the only Indian scientist and among a handful in the world with close to 50,000 citations, which puts him in the league of the biggies of science. In a career spanning 5 decades, Professor Rao is best known for his work in solid-state and structural chemistry. Translating the feat into common man's parlance, scientists say Professor Rao's achievement is equivalent to Tendulkar scoring 100 international centuries.

The H-index is an index that attempts to measure both the productivity and impact of the published work of a scientist or scholar. The index is based on the set of the scientist's most cited papers and the number of citations that they have received in other publications. The index was suggested by Hirsch, a physicist at University of California, as a tool for determining theoretical physicists' relative quality [1] and is sometimes called the Hirsch index or Hirsch number. The H-index serves as an alternative to more traditional journal impact factor metrics in the evaluation of the impact of the work of a particular researcher. Because only the most highly cited articles contribute to the H-index, its determination is a relatively simpler process. Hirsch has demonstrated that h has high predictive value for whether a scientist has won honors like national academy membership or the Nobel Prize. The H-index grows as citations accumulate and thus it depends on the "academic age" of a researcher. Hirsch suggested that, for physicists, a value for h of about 12 might be typical for advancement to tenure (associate professor) at major research universities. A value of about 18 could mean a full professorship, 15-20 could mean a fellowship in the American Physical Society and 45 or higher could mean membership in the United States National Academy of Sciences. [2]

Johns Hopkins University School of Medicine USA has only one set of criteria for promotion to Professor. [3] As a prerequisite for promotion, faculty must first satisfy the basic obligations of all faculty members as outlined in the Gold Book and "candidates for Professor must have outstanding records of scholarly achievement including teaching, must have achieved national leadership and in most cases, international professional recognition and must rank among the foremost leaders in their field". Methods of scholarship assessment include the number of times scholarly work has been cited, using Google Scholar for example, with more weight given to first/last author papers. The H index is also used which is a number that represents the number of papers that have been cited at least that number of times. A high H index means the author has a relatively high number of highly cited papers. Hirsch says he is concerned that his H-index whereas useful to compare publication records, must not be misused. "It should only be used as one measure, not as the primary basis for evaluating people for awards or promotion," he adds. [4]

  References Top

1.Hirsch JE. An index to quantify an individual′s scientific research output. Proc Natl Acad Sci USA 2005;102:16569-72.  Back to cited text no. 1
2.Peterson I. Rating researchers. Science News. [2005 Dec 2].  Back to cited text no. 2
3.Available from: http://www.hopkinsmedicine.org/education/women_science_medicine/_pdfs/Promotion%20Overview%20Brooks%20Jackson.pdf. [Last accessed on 2013 Dec 24].  Back to cited text no. 3
4.McDonald K. UCSD physicist proposes new way to rank scientists′ output. UCSD News > Releases; 2005.  Back to cited text no. 4


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