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HOW THE HIGHEST SCIENTIFIC ACHIEVEMENTS DEPEND ON HIRSCH INDEXES OF THEIR AUTHORS N.L.Istomina, A.M.Romanov, and M.Yu.Romanovsky Physical Branch of Russian.

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Presentation on theme: "HOW THE HIGHEST SCIENTIFIC ACHIEVEMENTS DEPEND ON HIRSCH INDEXES OF THEIR AUTHORS N.L.Istomina, A.M.Romanov, and M.Yu.Romanovsky Physical Branch of Russian."— Presentation transcript:

1 HOW THE HIGHEST SCIENTIFIC ACHIEVEMENTS DEPEND ON HIRSCH INDEXES OF THEIR AUTHORS N.L.Istomina, A.M.Romanov, and M.Yu.Romanovsky Physical Branch of Russian Academy of Sciences International conference Scientometrics: status and prospects for development Moscow, 10-12 October 2013

2 contents What was proposed by H.Hirsch Distribution of scientists over h-index? H.Hirsch distribution of Nobel Prize Winners h-index Method of investigations Results Some conclusions

3 the highest scientific achievements are represented by Nobel Prize for physics, chemistry, medicine and physiology (“biology”) Abel and Fields Prizes for mathematics in this study

4 h-index h-index: h articles of the author with the number of citation ≥ h. h-index of Nobel Prize Winners for 1985-2004 in physics is between 22 and 79 [Hirsch 2005]: 39 his versus 49 right Hirsch hypothesis: h ~ mn n is the number of working years m is the coefficient introduced by H.Hirsch;

5 proposals of J.Hirsch h-index of 20 after 20 years of scientific activity, characterizes a successful scientist. h-index of 40 after 20 years of scientific activity, characterizes outstanding scientists, likely to be found only at the top universities or major research laboratories. h-index of 60 after 20 years, or 90 after 30 years, characterizes truly unique individuals. for faculty at major research universities h ∼ 10 to 12 might be a typical value for advancement to associate professor, h ∼ 18 for advancement to full professor. Fellowship in the American Physical Society might occur typically for h ∼ 15 to 20. Membership in the US National Academy of Sciences may typically be associated with h ∼ 45 and higher.

6 distributions of scientists over h-index no experimental measurements; some reasonable speculations provide so- called stretch exponential (or Subbotin) distribution: Where N c is the number of scientists with such h-index = y.

7 real situation with h-index h-index was introduced by the sloppy article: 39 NPW instead of real 49; empty close-to-zero area; m-coefficient has not been accepted

8 empirical approach Distributions of Nobel Prize winners in physics, chemistry, and “biology” for 1980-2012 as well as distribution of Abel and Fields Prices winners in mathematics for 1970-2013 were generated using WoS data. Special attention was paid for small values of h-index as well as for large ones. Examples: – 7 physicists with small h-index of were specially checked; – h-index Raymond Davis Jr. was firstly detected as 121. “Cleaning” dropped it to 30

9 our distributions h-index of Nobel prize winners in physics for 1980-2012 and Fields and Abel Prizes winners for 1970-2013 in mathematics were determined using WoS data for these years; Results were refined in comparison with the Abstract of the talk. h-index of Nobel prize winners in chemistry as well as in physiology or medicine for 1980-2012 were determined using WoS data for these years; Results were new and not presented in the Abstract of the talk.

10 probability density function of h-index

11 some conclusions all distributions demonstrate clear drop with large values of h-index; NPW distributions in chemistry and “biology” have maximum at h ~ 40; the distribution for A&FPW in mathematics demonstrates dramatic (looks like exponential) drop for large h. our measurements strictly unsupport H.Hirsch proposals due to the strong drop for large h.

12 separated h-index: for the USA; for other countries NPW in chemistry 1980-2012NPW in physics 1980-2012

13 What does it mean? USA distributions of NPW demonstrate some features of H.Hirsch proposals; Distributions of NPW in other countries strictly opposite H.Hirsch proposals; H.Hirsch proposals to estimate the individual scientific yield could be applied to the USA scientists at least roughly; It cannot be applied for other countries.

14 Нобелевский лауреат 2013 г. Питер Хиггс является прекрасным примером того, что оценивая деятельность исследователей, нельзя опираться на формальные показатели, такие как индекс цитирования и/или индекс Хирша. «Самое главное — это то, что нужно экспертное мнение, ни в коем случае нельзя основываться только на формальных показателях. Наука настолько многообразна и настолько по-разному делается в разных областях, что одними критериями ее оценивать неправильно. Вот пример. Питер Хиггс имеет всего девять работ, но две из них попали в точку, и бозон назван его именем. Остальные работы малозаметны». Академик РАН Валерий Рубаков. Из интервью «Газете.Ru» 21 августа 2013 г. 8 октября 2013 г. Нобелевский комитет согласился с мнением экспертов

15 В своей относительно недавней статье (Higgs, P, “Prehistory of the Higgs boson” COMPTES RENDUS PHYSIQUE Volume: 8 Issue: 9 Pages: 970-972 (2007)) П. Хиггс описывает свою историю создания его ныне знаменитой статьи, в которой и был предсказан «бозон Хиггса». Список литературы к этой статье состоит всего из 20-ти ссылок и содержит работы, по мнению П. Хиггса, оказавшие на него наибольшее влияние, а также статьи которые он использовал в своей работе. В частности он цитирует трёх российских авторов: 1. Боголюбова Николая Николаевича 2. Ландау Льва Давидовича 3. Гинзбурга Виталия Лазаревича


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