Each institution’s position in the ranking is determined by the sum of the D-indexes (Discipline H-index) of all ranking scholars affiliated with that institution whose primary publication area is Engineering and Technology. The D-index is a refined metric that exclusively includes publications and citation data relevant to the examined discipline, providing a focused measure of each researcher’s impact within Engineering and Technology.
Scope of Research Analyzed
The ranking is based on a rigorous examination of 279,971 scientist profiles identified across diverse bibliometric databases. From this pool, 53,173 scientists specializing specifically in Engineering and Technology were analyzed in depth. A qualifying D-index threshold of 30 was set per scientist, with the additional requirement that a majority of their tier publications fall within the Engineering and Technology domain.
In addition to bibliometric indicators, scientists’ awards and notable achievements in their respective fields were considered to ensure a holistic evaluation of research excellence. The D-index threshold for inclusion among the top researchers is adaptively set in increments of 10, depending on the total number of scholars estimated within each discipline. This approach guarantees incorporation of the top 1% of leading scholars globally.
To maintain discipline-specific accuracy, a proximity criterion was applied such that a scientist’s D-index does not diverge from their general H-index by more than 30%. This ensures that the discipline-specific metric reliably reflects their research impact in Engineering and Technology.
Verification and Validation Practices
The Research.com team acknowledges that raw bibliometric data alone do not provide an absolute measure of scholarly output. Accordingly, every scientist’s profile included in the ranking was manually verified and cross-correlated against publications found in a wide range of reputable and trustworthy academic sources.
While the number of papers published in prominent journals and conference proceedings does not directly influence a researcher’s position in the Research.com ranking, it serves as a valuable secondary signal of contributions within a specific scientific domain.
Positions in the ranking are established based on each researcher’s H-index derived from the comprehensive data compiled via OpenAlex and CrossRef — the foremost accessible bibliometric databases recognized by the research community worldwide. Readers seeking an in-depth understanding of the methodology are encouraged to visit our methodology page.
Research.com’s Mission and Vision
Our mission in creating this ranking is to motivate scientists, policymakers, and business leaders globally to explore emerging directions pursued by top experts in Engineering and Technology. We aim to provide the academic and research communities with a transparent and reliable means to identify leading experts across specific disciplines, countries, and research institutions.
By spotlighting these top contributors, Research.com seeks to facilitate collaboration, foster knowledge exchange, and support evidence-driven decision-making that advances engineering and technology research worldwide.
Key Results of the 2026 Ranking
- Top 3 Institutions by Number of Leading Scientists:
- Massachusetts Institute of Technology (MIT) – 88 scientists
- Tsinghua University – 81 scientists
- Stanford University – 74 scientists
- Most Prominent Scholars Representing Diverse Institutions Worldwide: Polytechnic University of Milan, University of Southampton, Yaşar University, University of Jinan, Dalian University of Technology, Georgia Institute of Technology, United Arab Emirates University, Jamia Millia Islamia, City University of Hong Kong, University of Hong Kong.
- Top Individual Scientists Globally:
- Professor Enrico Zio, Polytechnic University of Milan – D-index 107
- Neville A. Stanton, University of Southampton – D-index 98
- Arif Hepbasli, Yaşar University – D-index 92
- Average Total D-index: The top 5% of universities average a total D-index of 2,171 compared to 318 across all 1,333 institutions included in the ranking.
- Research Output: Scientists affiliated with the top 5% of universities have published on average 10,630 articles in Engineering and Technology, significantly higher than the global average of 1,544 articles per institution.
- Citations: Researchers at the top 1% universities have amassed an average of 1,012,409 citations, compared to 75,108 citations for all universities evaluated.
