A scientist's position in the ranking is determined by their Discipline H-index, or D-index, a variation of the H-index that is discipline-specific. The D-index only considers publications and their citations within the examined discipline—Chemistry in this case—allowing for a precise measurement of research impact focused exclusively on the scientific field under review.
Scope of Research and Eligibility Criteria
The ranking process examined a total of 279,971 scientist profiles identified from a variety of bibliometric sources spanning all scientific disciplines. Specifically, 2 scientists from the field of Chemistry in Palestine were evaluated for inclusion. To qualify for the ranking, a scientist was required to have a minimum D-index of 40. Additionally, the majority of their tier publications needed to be concentrated within the area of Chemistry, ensuring discipline relevance.
The evaluation also considered the scientists’ awards and achievements pertinent to the field of Chemistry. This adds an important qualitative dimension supporting the bibliometric analysis. The threshold for D-index eligibility is dynamic and calibrated as increments of 10 depending on the estimated total number of scholars in each discipline, a method designed to encapsulate approximately the top 1% of leading researchers per field.
Another critical eligibility condition is the proximity of a scientist’s general H-index to their D-index. Candidates are included only if this proximity is 30% or less, thereby maintaining a consistent correlation between their overall research impact and their discipline-specific contributions.
Verification and Validation Process
Recognizing the limitations of raw bibliometric data as an absolute measure, the research team behind this ranking has employed rigorous manual verification and cross-correlation methods. Each scientist’s profile was meticulously reviewed and validated against publications indexed in a wide range of trustworthy and established sources. This careful verification was undertaken to minimize errors, misattributions, and inconsistencies.
While the number of papers published in prestigious journals and conference proceedings does not directly influence the positioning of researchers in the Research.com ranking, it serves as an important secondary signal reflecting each scientist’s broader contributions to their domain.
The final ranking position is derived exclusively from the D-index as computed from the data gathered primarily from OpenAlex and CrossRef. These databases are among the most prominent and trusted bibliometric platforms available to the global research community.
For detailed information regarding the methodology used to curate these rankings, we encourage readers to visit our methodology page.
Research.com’s Mission and Vision
At Research.com, our mission is to inspire researchers, corporations, policymakers, and academic institutions worldwide to gain insights into where leading experts in various scientific domains are focusing their efforts. By providing transparent and academically rigorous data on leading scientists, our rankings offer the entire scientific community a unique tool to identify top experts across disciplines, countries, and institutions.
We are committed to producing rankings grounded in meticulous data collection and verification, supporting informed decision-making and fostering collaborations that advance scientific progress globally.
