Biochemical and Biophysical Research Communications. A scientific institution has a successive Hirsch-type-index of i when at least i researchers from that institution have an h-index of at least i. The index works properly only for comparing scientists working in the same field; citation conventions differ widely among different fields. H-Announce is a moderated one-way distribution network for events, conferences, calls for papers, calls for publication, programs, workshops, sources of short-term funding, fellowships, and news from H-Net and our affiliates. Total number of papers does not account for the quality of scientific publications, while total number of citations can be disproportionately affected by participation in a single publication of major influence for instance, methodological papers proposing successful new techniques, methods or approximations, which can generate a large number of citations , or having many publications with few citations each.
Of course this method does not deal with academic age bias. Then, we look for the last position in which f is greater than or equal to the position we call h this position. Network editors receive the H-Announce daily digest and choose relevant content to repost to their networks. Discount offer combinable with sale and already reduced items. Journal of the American Society for Information Science and Technology. In addition, specific databases, such as the database can automatically calculate the h-index for researchers working in.
The h-index serves as an alternative to more traditional journal metrics in the evaluation of the impact of the work of a particular researcher. Perhaps something in the middle is more your speed, like the. Are you looking for a blast of efficiency? This method has not been readily adopted, perhaps because of its complexity. Offer subject to change or expire without notice. One can be easily convinced that ranking in coauthorship networks should take into account both measures to generate a realistic and acceptable ranking. Each database is likely to produce a different h for the same scholar, because of different coverage. It was introduced in July 2011 by as part of their work on.
For the economic measure, see. For example, the Meho and Yang study found that Google Scholar identified 53% more citations than Web of Science and Scopus combined, but noted that because most of the additional citations reported by Google Scholar were from low-impact journals or conference proceedings, they did not significantly alter the relative ranking of the individuals. Scientists with high h 2 upper percentages are perfectionists, whereas scientists with high h 2 lower percentages are mass producers. Journal of the American Society for Information Science and Technology. On average across the disciplines, a professor in the social sciences had an h-index about twice that of a lecturer or a senior lecturer, though the difference was the smallest in geography.
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Hi, To provide a more secure and pleasant fashion experience at hm. May not be redeemed for cash or cash equivalent and is not transferable. 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 is designed to improve upon simpler measures such as the total number of citations or publications. Tax, title, and license not included. However, this finding was contradicted by another study by Hirsch.
Hirsch has demonstrated that h has high predictive value for whether a scientist has won honors like membership or the. It has been suggested that in order to deal with the sometimes wide variation in h for a single academic measured across the possible citation databases, one should assume false negatives in the databases are more problematic than false positives and take the maximum h measured for an academic. A detailed study showed that the Web of Science has strong coverage of journal publications, but poor coverage of high impact conferences. Tax, title, and license not included. First we order the values of f from the largest to the lowest value. During the period January 1, 2000 — February 28, 2010, a physicist had to receive 2073 citations to be among the most cited 1% of physicists in the world. A value of about 18 could mean a full professorship, 15—20 could mean a fellowship in the , and 45 or higher could mean membership in the.
From July 2011 have provided an automatically-calculated h-index and within their own profile. However, Hirsch noted that values of h will vary between different fields. Please note: Announcements are posted and distributed the same day they are moderated; however, daily digests are distributed the day after moderation. As these metrics are percentages, they are intended to give a qualitative description to supplement the quantitative h-index. Scopus has better coverage of conferences, but poor coverage of publications prior to 1996; Google Scholar has the best coverage of conferences and most journals though not all , but like Scopus has limited coverage of pre-1990 publications. The index can also be applied to the productivity and impact of a as well as a group of scientists, such as a department or university or country. Tax, title, and license not included.