The bibliometric data utilized for deriving the citation-based metrics was collected on January 12, 2026. A researcher’s position in the ranking is determined by their D-index (Discipline H-index), a refined metric which exclusively considers publications and citations within the researcher's examined discipline. This ensures that the ranking reflects true disciplinary impact rather than general citation volume.
Scope of Research and Eligibility Criteria
The ranking encompasses a broad landscape of scientific productivity and impact, beginning with a dataset of 279,971 scientist profiles identified from a variety of bibliometric repositories and covering all scientific disciplines. From these, 8 scientists relevant to the field of Engineering and Technology in Algeria were evaluated in detail.
To qualify for inclusion in the Engineering and Technology ranking, a scientist’s D-index was required to be at least 30, and the majority of their tier publications had to be within the specific domain of Engineering and Technology. Furthermore, scientists’ awards and notable achievements related to this discipline were carefully considered to add qualitative depth to the evaluation process.
The D-index threshold for nominating top researchers is incremented by steps of 10, calibrated according to the total estimated number of scholars per discipline. This methodology guarantees that the top 1% of leading scholars globally or nationally, depending on the scope, are incorporated into the list. Additionally, candidates exhibited a proximity of 30% or less between their general H-index and their D-index, ensuring their impact is concentrated within the discipline rather than being diffusely spread across unrelated fields.
Verification and Validation Practices
We recognize that raw bibliometric data alone cannot serve as an absolute measure of scientific contribution. To mitigate this, all scientist profiles included in the ranking underwent manual verification by experts. Profiles were cross-referenced against a broad range of trustworthy sources encompassing established journals, conference proceedings, and institutional records.
While the number of publications in high-impact journals and leading conferences is not factored explicitly into the determination of a researcher’s rank, it remains an important secondary signal reflecting their tangible contributions to engineering and technology research.
The ranking itself is fundamentally established using each researcher's D-index, based on curated information from OpenAlex and CrossRef — widely regarded as the most prominent and reliable bibliometric repositories available to the research community worldwide. For a comprehensive understanding of the full methodology applied, readers are encouraged to visit our methodology page.
Research.com’s Mission Behind the Ranking
The creation of this ranking aligns with Research.com’s overarching mission to inspire researchers, organizations, and policymakers globally to observe and understand emerging trends in top-tier scientific expertise. By providing transparent and actionable insights into who the foremost experts are within specific research areas, countries, or institutions, we aim to foster collaboration, funding strategies, and recognition that advance the scientific enterprise.
This ranking represents the culmination of meticulous data integration, expert validation, and thoughtful metric design — underscoring Research.com’s commitment to delivering credible, valuable, and impactful tools for the worldwide scientific community.
