A scientist’s position in this ranking is determined by their D-index (Discipline H-index), a specialized metric that accounts exclusively for papers and citation metrics related to the discipline under examination—in this case, Engineering and Technology. This focused approach ensures that the ranking accurately reflects outstanding contributions specifically within the targeted field.
Scope of Research and Inclusion Criteria
The ranking methodology involved the evaluation of 279,971 scientist profiles curated from a variety of bibliometric data sources spanning all academic disciplines. Of these, 4,000 scientists identified with Engineering and Technology were examined in detail. To qualify for inclusion in the Engineering and Technology ranking, a scientist was required to have a D-index of at least 30, accompanied by a majority of their highest-impact publications ("tier publications") situated within the Engineering and Technology domain.
In addition to bibliometric performance, scientists’ awards and other notable achievements within the field were factored into the assessment process. The D-index threshold for recognizing top researchers is set as incremental steps of 10 according to the estimated total population of scholars within each discipline. This approach ensures inclusion of the top 1% of leading scholars in each field.
Finally, to maintain a measure of disciplinary specificity, a scientist’s general H-index and their D-index must show a proximity of 30% or less. This criterion reduces the likelihood of scholars being disproportionately recognized outside their primary domain of contribution.
Verification and Quality Assurance
The research team behind the ranking is acutely aware that raw bibliometric data is not intended as an absolute evaluative tool for scholarly output. Therefore, all scientist profiles included in the ranking were manually verified and cross-correlated against publications indexed in a wide array of trustworthy academic journals, conference proceedings, and other reputable sources.
While these factors—such as the number of papers published in prominent journals and conference proceedings—do not directly influence a researcher’s position in the ranking, they serve as valuable secondary signals of a scientist’s meaningful contribution within their specialized area.
The core ranking position is established by each researcher’s D-index as calculated from data obtained from OpenAlex and CrossRef, which remain the most prominent and respected bibliometric databases available to the scientific community.
For a detailed understanding of the methodology, readers are encouraged to consult our methodology page.
Research.com’s Mission and Vision
At Research.com, our overarching mission is to motivate researchers, companies, and policymakers worldwide to recognize and engage with leading experts. This ranking provides a reliable and transparent way for the entire scientific community to identify who the foremost specialists are in specific research domains, within countries, or even across research institutions.
Through meticulous data collection, verification, and transparent methodology, we aim to build trust, foster collaboration, and highlight excellence in Engineering and Technology research, thereby advancing scientific progress at both regional and global levels.
