All citation-based metrics utilized to determine researcher standings were collected on January 12, 2026, ensuring the timeliness and relevance of the data. A scientist’s position in the ranking is determined by their Discipline H-index (D-index), a refined metric that exclusively incorporates publications and citation counts relevant to the specific discipline under evaluation — in this case, Engineering and Technology.
Scope of Research and Qualification Criteria
The ranking process involved examining 279,971 scientist profiles across all disciplines identified from diverse bibliometric data sources to ensure a holistic and representative overview of the global research landscape. Specifically within Engineering and Technology, 4,000 scientists were analyzed to identify those who meet the high standards of excellence required for inclusion.
To qualify for the ranking, a scientist’s D-index had to be at least 30, with the majority of their tier publications prominently situated within Engineering and Technology research. Additionally, the evaluation considered notable awards and achievements within the field to further validate a researcher’s standing.
The D-index threshold is dynamically set, increasing in increments of 10 based on the estimated total number of scholars within each discipline. This approach guarantees the incorporation of the top 1% of leading scholars into the list, reflecting both depth and breadth of expertise. Furthermore, a proximity criterion ensures that the difference between a scientist’s general H-index and their D-index remains at 30% or less, safeguarding against disproportionate influence from unrelated disciplines.
Verification Practices and Data Integrity
Recognizing the inherent limitations of raw bibliometric data as an absolute evaluative tool, the Research.com team implemented rigorous manual verification practices for all scientist profiles included in the ranking. Each profile was cross-correlated against publications indexed in an extensive range of trustworthy academic sources to confirm accuracy and authenticity.
While the number of papers published in prominent journals and conference proceedings does not directly influence a researcher’s rank position, it serves as a valuable secondary metric reflecting the breadth and impact of their scholarly contributions within Engineering and Technology.
The final ranking position is derived using the D-index computed from data obtained from OpenAlex and CrossRef—two of the most prominent and respected bibliometric databases available to the research community globally.
For a detailed overview of the methodologies employed, please visit our methodology page.
Research.com’s Mission and Vision
The core mission driving Research.com in creating this ranking is to motivate and empower researchers, academic institutions, industry stakeholders, and policymakers worldwide to gain critical insights into where leading scientific expertise is concentrated and evolving. By providing a transparent and reliable platform for identifying top experts, Research.com aims to facilitate collaborative opportunities and informed decision-making across various domains of science in different countries and institutions.
Our commitment is to meticulous and methodical scholarship that upholds the highest standards of academic rigor and integrity, ensuring that the scientific community can confidently rely on our rankings as a meaningful reflection of research excellence.
