A scientist’s position within the ranking is determined by their D-index (Discipline H-index). This metric specifically measures the impact of a researcher within a defined discipline by including only the papers and citation metrics relevant to that field. The D-index thus provides a focused and discipline-specific measure of scholarly influence.
Scope of Research and Qualification Criteria
The ranking is based on an extensive examination of 279,971 scientist profiles aggregated from a variety of bibliometric data sources across all academic disciplines. For the Engineering and Technology category, specifically, 1,000 scientist profiles were identified and analyzed.
To qualify for inclusion in this ranking, a scientist must have a D-index of at least 30, with the majority of their top-tier publications belonging to the area of Engineering and Technology. In addition to bibliometric measures, scientists' awards and achievements within the field were carefully considered as supplementary indicators of excellence.
The D-index threshold for recognizing top researchers is dynamically set in increments of 10, relative to the estimated total population of scholars in each discipline. This method ensures that the top 1% of leading experts are captured in the lists. Moreover, candidates must show a proximity of 30% or less between their general H-index and their discipline-specific D-index, reinforcing the emphasis on focused expertise within Engineering and Technology.
Verification and Validation Procedures
Recognizing that raw bibliometric data alone cannot serve as an absolute measure of scholarly output, the Research.com team conducted thorough manual verification of each scientist profile. This included cross-correlation against publications indexed in a wide array of trustworthy academic sources to uphold accuracy and integrity.
While the number of publications in prominent journals and conference proceedings does not directly influence ranking position, such data serve as valuable secondary indicators of a scientist’s research contribution in a specific field.
Ultimately, the ranking position is assigned based on the D-index derived from data collected from OpenAlex and CrossRef—the two most prominent and widely accepted bibliometric databases available to the research community.
For a comprehensive understanding of the methodology and additional details, please visit our methodology page.
Research.com’s Mission Behind the Ranking
The creation of this ranking aligns with Research.com’s overarching mission: to inspire researchers, industry leaders, policymakers, and academic institutions worldwide to closely examine the trajectories of leading experts. By providing a transparent and rigorous platform, we enable the broader scientific community to identify and engage with top scholars in specific areas of study, across countries and institutional boundaries.
Through meticulous data analysis and intentional curation, Research.com aims to foster recognition of excellence and support informed decision-making that propels the global advancement of science and technology.
