Zoek in de site...


This page in Dutch nederlandsevlag.gif (98 bytes)

In 2005 the H-index was defined by J.E. Hirsch in the journal PNAS as:
A scientist has index h if h of [his/her] N papers have at least h citations each, and the other (N - h) papers have at most h citations each.

An H-index of 45 means that a scientist has published 45 articles, each of these have been quoted at least 45 times.

In Web of Science, the H-index can be brought up automatically. In addition, the H-index can be calculated manually if you know the number of citations.

Web of Science

In the Web of Science you can search all versions of the author’s name which are in use.

van der avoird

Click on search. The results appear. Using Refine Results or Advanced Search, you can delete titles which are incorrect.

You also can search for the Author Identifier. Search for the name of the author on the site: https://publons.com/researcher

publons search

A record appears with ResearcherID: C-8229-2011

In Web of Science you can fill in this ResearcherID and select the field Author Identifiers and click on Search:

reseracherid wos

To receive the H-index click on the right on "Create Citation Report":

create citation report

Example: a screen appears with two diagrams, the H-index is in the second block:

h-index flik new

In the diagram above you see the sum of times cited per year.

Use of the H-index only for evaluating scientific output is not recommended:

"If the h index is used for the evaluation of research performance, it should always be taken into account that (...) it is dependent on the length of an academic career and the field of study in which the papers are published and cited. For this reason, the index should only be used to compare researchers of a similar age and within the same field of study. At the end of the day, all measurements of research quality should be taken with a grain of salt; it is certainly not possible to describe a scientist's contributions to a given research field with mere numerical values. As Albert Einstein (1879–1955) famously noted: “[n]ot everything that counts is countable, and not everything that's countable counts.”

"Bornmann, L., & Daniel, H.-D. (2009). The state of h index research. Is the h index the ideal way to measure research performance? EMBO reports, 10(1), 2-6. doi:10.1038/embor.2008.233