A scientist’s position in the ranking is determined by their D-index (Discipline H-index), a specialized metric that considers only papers and citation counts strictly within the examined discipline of Engineering and Technology. This approach ensures a focused evaluation of scholarly impact pertinent to the targeted field rather than a generalized citation record.
Scope of Research and Qualification Criteria
For the purposes of this ranking, 279,971 scientist profiles spanning all disciplines from a diverse array of bibliometric data sources were examined. From this extensive pool, 103 scientists specifically identified with the Engineering and Technology discipline were analyzed in detail.
To qualify for inclusion, a scientist’s D-index had to be at least 30, ensuring that only significantly impactful researchers are considered. Additionally, a majority of their tier publications needed to be centered in the Engineering and Technology field, affirming the disciplinary relevance of their work. Moreover, evaluations also incorporated an assessment of scientists’ awards and achievements within the field, recognizing notable professional distinctions and contributions.
The D-index threshold for recognizing top researchers is calibrated as increments of 10, depending on the estimated total number of scholars within each discipline, while consistently guaranteeing inclusion of the top 1% of leading scholars. Furthermore, to maintain consistency between general scholarly influence and disciplinary impact, candidates were required to have a maximum proximity difference of 30% or less between their overall H-index and their D-index.
Verification Practices and Additional Considerations
The research team behind this ranking acknowledges that raw bibliometric data alone cannot serve as an absolute measure of scholarly output or value. Therefore, every scientist profile included in the ranking underwent meticulous manual verification, involving cross-correlation against publications indexed in a broad spectrum of trustworthy academic sources.
Although the number of papers published in leading journals and conference proceedings does not directly factor into the ranking position, it serves as a valuable secondary signal illustrating a scientist’s ongoing contribution and presence within the specific scientific community.
The ranking position itself is established on the basis of each researcher's D-index, calculated from data curated primarily via OpenAlex and CrossRef — two of the most prominent and widely recognized bibliometric databases available to researchers globally. For an in-depth understanding of the full methodology employed, readers are encouraged to visit our methodology page.
Research.com’s Mission and Vision
At Research.com, our mission in creating this and other discipline-specific rankings is to motivate researchers, companies, and policymakers worldwide to explore the trajectories of leading experts. By providing a transparent and accessible way to identify top-tier scientists in distinct areas of study, across countries, and within research institutions, we aim to foster greater recognition and collaboration within the global scientific community.
Through rigorous data collection, verification, and analysis, we strive to build rankings that not only reflect academic excellence but also empower informed decisions by stakeholders shaping the future of engineering and technology research.
