What impact can be measured?
What is a H-index?
The h-index is an indicator used in academic publishing to measure the publishing activity of researchers and their scientific influence. It is determined by both the number of the researcher's publications and the number of the citations received by the publications.
H-index = number of publications (h) referenced to ≥ h.
How can I find out my h-index?
The researcher's h-index can be searched from the Scopus and Web of Science databases and from Google Scholar. Citations from Google Scholar can be analyzed with the free Publish and Perish program.
The h-index differs in different databases because of the content of the databases differs. Every database counts the h-index based on its publication coverage and therefore you must choose the database that is suitable for the discipline in question.
For analyzing h-index all the researcher’s publications found in the database are needed. Therefore, an up-to-date list of publications by a researcher is always required for a reliable determination of the h-index.
Researcher profile of the Google Scholar counts also non-scientific publications e.g. thesis. There might also be duplicates because of the self-archiving. Therefore h-index from the Google Scholar differs significantly from the values which are obtained from Scopus or Web of Science.
Typical for h-index
(Adapted from the guide of Oulu University Library)
H-index quick guides
The citation report (WoS) / overview (Scopus) provides aggregate citation statistics like:
Publication Forum (in Finnish often referred to as JUFO) evaluates Finnish and foreign academic publication channels. Publication Forum operates under the auspices of the Federation of Finnish Learned Societies (TSV).
Publication Forum ratings
The three-level classification rates the major foreign and Finnish publication channels of all disciplines.
Journal Citation Reports is a part of the Web of Science database which tells the journal impact factors (JIF).
Impact Factor score
SJR, SNIP and CiteScore can be seen in the context of Scopus journals (Sources - Browse sources). You can compare sources.
SJR indicator (SCImago Journal Rank)
SNIP indicator (Source Normalized Impact per Paper)
How to calculate CiteScore
A journal has an h-index of h if there are at least h papers published in that journal that have received at least h citations each.
Typical of journal h-index...
Journal Citation Reports also publishes Article Influence scores and Eigenfactor scores.
Article Influence (AI) score
Eigenfactor (EF) score