A scientist’s position within the ranking is determined by their D-index (Discipline H-index). Unlike a standard H-index, the D-index considers only the papers and citation counts relevant to the researcher’s specific discipline under examination — in this case, Engineering and Technology. This approach ensures a more precise assessment of an individual’s impact within their specialized field rather than general research output.
Scope of Research and Selection Criteria
The ranking process involved the examination of 279,971 scientist profiles identified across a broad spectrum of bibliometric data sources, covering all academic disciplines. Among these, a focused cohort of 7,000 scientists specialized in Engineering and Technology were specifically analyzed for inclusion in the present ranking.
To qualify for the ranking, a scientist was required to have a D-index of at least 30, demonstrating substantive scholarly impact in the field. Moreover, a qualifying researcher’s tier publications had to be predominantly within the Engineering and Technology domain. Consideration was also given to awards and notable achievements indicative of leadership and excellence in this area.
The threshold for the D-index is calibrated in increments of 10, based on the estimated total number of scholars active within each discipline. This methodology guarantees that the top 1% of leading scholars are incorporated while maintaining rigorous selection standards. Additionally, there is an expectation that the difference between a scientist’s general H-index and their Discipline H-index should not exceed 30%, ensuring alignment between overall impact and discipline-specific contributions.
Verification Procedures and Methodological Rigor
Recognizing that raw bibliometric data alone cannot serve as an absolute measure of scholarly output, the Research.com team incorporates thorough manual verification procedures. Each scientist’s profile was cross-checked against publications listed in a variety of trustworthy and diverse sources to confirm accuracy and validity.
While the number of publications in prominent journals and conference proceedings does not directly influence a researcher’s position in the ranking, it remains a valuable secondary signal reflecting an individual’s contribution to their scientific discipline.
Ultimately, rankings are established using each researcher’s D-index, derived from data gathered principally through OpenAlex and CrossRef — trusted and authoritative bibliometric platforms. For a detailed exposition of the methodology employed, readers are encouraged to visit our methodology page.
Research.com’s Mission and Vision
The creation of this ranking aligns with Research.com’s overarching mission to inspire researchers, institutions, policymakers, and companies worldwide to closely monitor the trajectories of leading experts. By providing a transparent and authoritative resource, Research.com facilitates greater visibility into who the foremost contributors are within specific disciplines, countries, and research organizations.
This initiative fosters an informed scientific community, promoting collaboration and strategic decision-making grounded in a nuanced understanding of research leadership and innovation. The meticulous and rigorous approach behind this ranking reflects the commitment to credibility and excellence that Research.com upholds in serving the global academic community.
