The bibliometric data underpinning the citation-based metrics employed in this ranking were meticulously collected on January 12, 2026. Each scientist's position in the ranking is determined using the D-index (Discipline H-index), a metric specifically calculated by including only the papers and citation counts relevant to the individual’s examined discipline—Engineering and Technology in this case—allowing for a precise evaluation of disciplinary impact.
Scope of Research and Qualification Criteria
Our analysis encompassed a broad pool of 279,971 scientist profiles identified across a diverse array of bibliometric sources, spanning all research disciplines. From this extensive group, 116 scientists specializing in Engineering and Technology were carefully examined for inclusion in the ranking.
To qualify, a scientist must have attained a minimum D-index of 30, with the majority of their tier publications clearly situated within the domain of Engineering and Technology. Additionally, consideration was given to scientists’ awards and notable achievements broadly recognized within the field.
The D-index threshold for identifying top researchers is adaptively set as increments of 10, aligned with the estimated total number of scholars per discipline, thereby ensuring that the top 1% of leading experts are incorporated into the list. Furthermore, there is a stipulated proximity criterion whereby the gap between a scientist’s overall H-index and their discipline-specific D-index does not exceed 30%, maintaining relevancy and disciplinary focus.
Verification and Methodological Rigor
Recognizing that raw bibliometric data alone cannot serve as an absolute metric for evaluating scholarly output, the Research.com team has engaged in thorough manual verification of all scientist profiles. Each profile was cross-checked against publications registered in a range of trustworthy external sources, ensuring accuracy and integrity.
While the number of publications in prominent journals and conference proceedings does not directly influence the ranking position, it remains an important secondary indicator of a scientist’s research contribution and standing within specific scientific communities.
The ranking positions are ultimately established using the D-index derived from data consolidated by OpenAlex and CrossRef, acknowledged as the most comprehensive and reliable bibliometric databases available to the research community globally.
For a detailed understanding of the methodology and verification procedures involved, readers are encouraged to visit our methodology page.
Research.com’s Mission and Vision
The creation of this ranking aligns with Research.com’s overarching mission to inspire researchers, industry leaders, and policymakers worldwide to track the trajectories of leading experts in their respective fields. Through transparent and rigorously curated rankings, we offer the global scientific community a valuable resource to identify foremost specialists across disciplines, countries, and institutions.
By shedding light on distinguished scientists in Engineering and Technology in Singapore, we aim to foster greater collaboration, recognition, and informed decision-making, ultimately advancing the progress and visibility of scientific innovation on a broader scale.
