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Among 36 new inductees in the National Academy of Sciences in biological and biomedical sciences in 2005, the median h-index was 57. Tax, title, and license not included. 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. If you need help, feel free to get in touch with us at 855-466-7467. Hi, To provide a more secure and pleasant fashion experience at hm. As these metrics are percentages, they are intended to give a qualitative description to supplement the quantitative h-index.

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Journal of the American Society for Information Science and Technology. Are you looking for a blast of efficiency? In contrast, if the same publications have 25, 8, 5, 3, and 3, then the index is 3 because the fourth paper has only 3 citations. It was found that the distribution of the h-index, although it depends on the field, can be normalized by a simple rescaling factor. 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. Each database is likely to produce a different h for the same scholar, because of different coverage. The index was suggested in 2005 by , a physicist at , as a tool for determining ' relative quality and is sometimes called the Hirsch index or Hirsch number.

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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. Just enter your current password to continue. Offer subject to change or expire without notice. .

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May not be redeemed for cash or cash equivalent and is not transferable. Biochemical and Biophysical Research Communications. The don­key car­ried a heavy bur­den, not an heavy bur­den. Tax, title, and license not included. We also have pre-owned options at our. 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. Tax, title, and license not included.

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The h-index is intended to measure simultaneously the quality and quantity of scientific output. Not valid for purchase of gift cards or shipping. It has been stated that citation behavior in general is affected by field-dependent factors, which may invalidate comparisons not only across disciplines but even within different fields of research of one discipline. 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. To redeem in-store, print or show this banner on your smartphone. However, Hirsch noted that values of h will vary between different fields.

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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 is designed to improve upon simpler measures such as the total number of citations or publications. It might be simpler to divide citation counts by the number of authors before ordering the papers and obtaining the h-index, as originally suggested by Hirsch. Journal of the American Society for Information Science and Technology. Chicago Manual of Style, 16th edi­tion, University of Chicago Press, 5. This article is about the index of scientific research impact. 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.

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Department of the Treasury to represent taxpayers before all administrative levels of the Internal Revenue Service for audits, collections, and appeals. Scientists with high h 2 upper percentages are perfectionists, whereas scientists with high h 2 lower percentages are mass producers. First we order the values of f from the largest to the lowest value. Harzing's Publish or Perish program calculates the h-index based on entries. Attorney Attorneys are Tax Advisors who have received state certifications to practice law.

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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. You attend a his­tory class, not an his­tory class. However, this finding was contradicted by another study by Hirsch. The three h 2 metrics measure the relative area within a scientist's citation distribution in the low impact area, h 2 lower, the area captured by the h-index, h 2 center, and the area from publications with the highest visibility, h 2 upper. 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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Sign in Hi, To provide a more secure and pleasant fashion experience at hm. These Tax Advisors have completed advanced training covering the various investment options and how the income, gains, and losses from these investments impact current and future year tax situations. 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. The h-index is an that attempts to measure both the and of the of a or scholar. Hirsch has demonstrated that h has high predictive value for whether a scientist has won honors like membership or the. The index works properly only for comparing scientists working in the same field; citation conventions differ widely among different fields.

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