A scientist’s position in the ranking is determined by their D-index (Discipline H-index), a refined metric that considers only publications and citation counts within the examined discipline — in this case, Chemistry. The D-index thus reflects a researcher’s impact specifically within their relevant scientific field rather than their overall citation performance.
Scope of Research and Ranking Criteria
This edition evaluated a total of 279,971 scientist profiles identified across multiple bibliometric data sources, spanning all academic disciplines and including 2 scientists specifically in the field of Chemistry from Kuwait. To qualify for inclusion in the Chemistry ranking, a scientist must have a D-index of at least 40, and the majority of their top-tier publications must be within the domain of Chemistry.
In addition to bibliometric thresholds, scientists’ awards and recognized achievements within the Chemistry discipline were also taken into account to ensure a comprehensive assessment of scholarly contribution.
The D-index threshold for considering top researchers is calibrated as an incremental multiple of 10, adjusted according to the estimated total number of scholars in each discipline. This approach guarantees that approximately the top 1% of leading scholars are included in the ranking. Furthermore, a proximity criterion ensures that the difference between a scientist’s overall H-index and their D-index remains within 30%, thus confirming subject-specific expertise.
Additional Verification Practices
Recognizing that raw bibliometric data are not an absolute measure of scholarly output, the research team conducted meticulous manual verification of all scientist profiles included in the ranking. Each profile was cross-referenced against publications listed in a diverse array of trusted and authoritative scientific sources to uphold accuracy and integrity.
While the number of publications in prominent journals and conference proceedings does not directly influence a scientist’s ranking position, it remains a valuable secondary signal of their contribution and reputation within the discipline.
The ranking positions themselves are rigorously established using the D-index calculation based on data curated from OpenAlex and CrossRef, which are the most prominent and well-regarded bibliometric repositories accessible to the scientific community.
For a detailed understanding of the methodology employed, readers are encouraged to visit our methodology page.
Research.com’s Mission
Our mission at Research.com is to inspire researchers, institutions, corporations, and policymakers worldwide to examine the evolving trajectories of leading experts. By providing a transparent and meticulously developed ranking system, we aim to facilitate the scientific community in identifying who the foremost authorities are in specific fields of study, across countries, and within research organizations.
This initiative serves as a resource to spotlight excellence, foster collaboration, and inform strategic decisions that advance knowledge and innovation globally.
