A researcher’s position in the ranking is determined based on their D-index (Discipline H-index), a metric that selectively includes only papers and citation metrics related to the specific discipline under examination. This methodology ensures that the evaluation reflects a scientist’s impact and contribution explicitly within the field of Engineering and Technology, rather than their overall scholarly output.
Scope of Research and Inclusion Criteria
The ranking assesses a total of 279,971 scientist profiles identified across a broad range of bibliometric data sources covering all scientific disciplines globally. Specifically, 3,229 scientists from the field of Engineering and Technology were examined in detail. To qualify for inclusion in this ranking, a scientist’s D-index must be at least 30, and the majority of their tier publications must be concentrated in Engineering and Technology. Additionally, the candidate’s awards and significant professional achievements in this field were taken into consideration as supplemental indicators of excellence.
The D-index threshold varies by discipline and is set as increments of 10, calibrated according to the estimated total number of scholars within each discipline. This approach ensures that the ranking consistently includes the top 1% of leading researchers in their respective fields. Furthermore, to maintain disciplinary relevance, there is a requirement that the proximity between a scientist’s general H-index and their D-index not exceed 30%.
Verification and Validation Practices
Understanding the inherent limitations of raw bibliometric data, the research team behind this ranking undertook rigorous additional verification processes. All scientist profiles were manually checked and cross-referenced against publication records sourced from a wide range of trusted academic repositories and databases. This careful validation aims to ensure the highest level of accuracy and to prevent misclassification or data inaccuracies.
While the number of papers published in prominent journals and conference proceedings does not directly influence ranking position, these metrics are acknowledged as valuable secondary signals of a scientist’s research contributions within Engineering and Technology.
The ranking position is ultimately established through the D-index metric, based on comprehensive data aggregated from OpenAlex and CrossRef, which are recognized as two of the foremost and most reliable bibliometric databases available to the global research community. For detailed information regarding the methodology employed, we invite readers to visit our methodology page.
Research.com’s Mission and Objectives
At Research.com, our mission in creating this ranking is to motivate researchers, corporations, and policymakers worldwide to closely observe the trajectories of leading experts in science and technology. By identifying and showcasing the foremost specialists in specific areas of study—be it by country, discipline, or research institution—we facilitate greater visibility and recognition within the scientific community. We thereby aim to foster collaboration, informed decision-making, and strategic investment in innovation.
Through meticulous and transparent curation, this ranking serves as an authoritative resource that supports academic institutions and policymakers in understanding where expertise is concentrated and how research excellence progresses in the domain of Engineering and Technology in Croatia.
