The h-index is a metric developed by J.E. Hirsch to quantify an individual researcher's scientific impact. It is calculated based on the number of papers they have published and the number of citations received, with the h-index being the number of papers that have been cited at least that same number of times. Specifically, the h-index looks at a researcher's most cited papers ranked in descending order by citations, and the h-index value is equal to the number of papers that have received that same number or more citations.

1. H-
index
By
Dr. Amr Mounir
Assistant professor of Ophthalmology,
Sohag University

2. H-index
The h-index is an index to quantify an individual’s scientific
research output developed by (J.E. Hirsch)
The index is based on the set of the researcher's most
cited papers and the number of citations that they have
received in other people's publications.
The h-index is calculated by counting the number of
publications for which an author has been cited by other
authors at least that same number of times.

3. H-index is based on a list of your
publications ranked in
descending order by theTimes
Cited count.
The value of h is equal to the
number of papers (N) in the list
that have N or more citations.
In the example below, the
researcher would have an h-
index of 8, as 8 articles have
been cited at least 8 or more
times, and the remaining articles
have each been cited 8 times or
less.

4. Thank You
Hussein Bicar (1913-2002)