A scientist’s position within the ranking is determined based on their D-index (Discipline H-index), which is a specialization of the traditional H-index. This metric selectively includes only those papers and citation counts pertinent to the examined discipline—in this case, Engineering and Technology—thereby reflecting a more targeted measure of impact and influence within the field.
Scope and Criteria of the Ranking
The scope of this ranking encompasses a thorough assessment of 279,971 scientist profiles identified from a diverse set of bibliometric data sources across all disciplines. Specifically, for Engineering and Technology, a targeted examination was conducted on 3,218 scientists in this domain.
To qualify for inclusion in the ranking, candidates had to meet several stringent criteria:
- A minimum D-index of 30, ensuring a high level of scholarly impact within the discipline.
- A predominance of "tier" publications—representing quality and influence—within the area of Engineering and Technology.
- Recognition of awards and notable achievements specifically related to Engineering and Technology, further validating scholarly leadership.
The D-index threshold is calibrated in increments of 10 according to the estimated total number of scholars within each discipline, carefully designed to guarantee incorporation of the top 1% of leading researchers. Additionally, to ensure consistency and relevance, there is an imposed proximity requirement stipulating that the discrepancy between a scientist’s general H-index and their discipline-specific D-index should not exceed 30%.
Verification and Validation Procedures
Understanding the limitations of raw bibliometric data as an absolute evaluative tool, the Research.com team has implemented rigorous manual verification processes. All scientist profiles included in the ranking were meticulously cross-correlated against published works from an extensive range of trustworthy sources. This additional layer of scrutiny enhances the reliability and accuracy of the final ranking.
While the number of published papers in prominent journals and conference proceedings does not directly impact a researcher’s position in the Research.com ranking, it serves as an important secondary signal of scholarly contribution within the scientific community.
Ultimately, ranking positions are established using each researcher’s D-index, derived from data aggregated predominantly from OpenAlex and CrossRef—two of the most authoritative and well-recognized bibliometric databases accessible to researchers globally.
For a comprehensive overview of the methodology involved, we encourage readers to consult our methodology page.
Research.com’s Mission and Vision
At Research.com, our mission is to inspire and enable researchers, corporations, and policymakers worldwide to gain insight into the trajectories of leading experts across a broad spectrum of scientific disciplines. By identifying and showcasing the foremost authorities in specific areas of study, whether by country or within distinguished research institutions, we provide an invaluable resource for the entire scientific ecosystem.
We believe that illuminating the highest echelons of research excellence fosters collaboration, informs strategic investment, and advances scientific progress on a global scale. The creation of this ranking embodies our commitment to meticulous, transparent, and credible evaluation practices, reflecting the dedication of the expert community we serve.
