All citation-based metrics used to determine the ranking positions were extracted on January 12, 2026. A scientist’s ranking is determined by their D-index (Discipline H-index), an advanced bibliometric indicator that isolates and quantifies a researcher's impact within a specific discipline, accounting exclusively for papers and citations relevant to the examined field of Engineering and Technology.
Scope of Research and Inclusion Criteria
This ranking rigorously examined 279,971 scientist profiles identified across diverse bibliometric databases, spanning all academic disciplines. Of these, 7 scientists specializing in Engineering and Technology were identified for inclusion. To qualify for this ranking, scientists were required to meet a minimum D-index threshold of 30, ensuring that only researchers with a substantial disciplinary impact were considered. Additionally, a majority of the top-tier publications for each listed scientist had to fall within the Engineering and Technology domain. The evaluation also incorporated notable awards and achievements relevant to the field, reflecting recognized contributions beyond publication metrics.
The threshold for the D-index was strategically set in increments of 10, commensurate with the estimated total number of scholars per discipline, while guaranteeing that the top 1% of leading experts in Engineering and Technology were systematically included. To maintain rigorous disciplinary specificity and consistency, the ranking enforces a proximity criterion whereby the difference between a scientist’s overall H-index and their D-index does not exceed 30%.
Verification and Validation Practices
Understanding the inherent limitations of raw bibliometric data, the Research.com team has implemented a meticulous manual verification process. Each scientist profile has been thoroughly cross-verified against publications indexed in numerous trustworthy academic sources to ensure accuracy and consistency of the underlying data. This manual vetting safeguards against errors and misattributions that can arise from automated data aggregation.
While the number of publications in prominent journals and leading conference proceedings does not directly influence a scientist’s ranking position, it remains a crucial secondary indicator of an individual’s scholarly contributions and recognition within the field.
The final ranking positions are established on the basis of the D-index, calculated using trusted data from OpenAlex and CrossRef. These platforms provide comprehensive metadata and citation information essential for robust and transparent ranking methodologies. For detailed information regarding the methodology, readers are encouraged to visit our methodology page.
Research.com’s Mission and Vision
At Research.com, our mission is to inspire researchers, policymakers, companies, and academic institutions worldwide to understand and recognize the trajectories of leading experts. Through this ranking, we offer the global scientific community a transparent and authoritative tool to identify leading talent in specific fields of study, across different countries, and within research institutions.
We are committed to maintaining the highest standards of rigor and integrity throughout the ranking process, thereby fostering informed decision-making and driving excellence in research worldwide.
