Data Sources and Bibliometric Basis
The 5th edition of the Research.com Best Engineering and Technology Scientists in New Zealand Ranking is rooted in robust bibliometric data primarily sourced from OpenAlex and CrossRef, complemented by multiple other reputable data sources. These platforms are recognized as two of the most prominent and widely respected bibliometric databases accessible to the global research community. Citation-based metrics used to establish the ranking positions were collected on January 12, 2026, ensuring the most recent and comprehensive dataset. A scientist's position within the ranking is determined by their D-index (Discipline H-index), which exclusively accounts for publications and citation data relevant to the specific discipline under review—Engineering and Technology.
Scope and Criteria of the Ranking
The ranking is based on an extensive examination of 279,971 scientist profiles aggregated from various bibliometric sources across all disciplines. Specifically, for Engineering and Technology, 35 distinguished scientists were identified and evaluated. To qualify for inclusion in the ranking, a scientist's D-index must be at least 30, reflecting substantial research impact within the field. Additionally, a majority of each qualifying scientist’s tier publications needed to be concentrated in Engineering and Technology. Contributions such as awards and notable achievements within the discipline were also factored into the evaluative process.
The threshold of the D-index is set with strategic increments of 10, tailored according to the estimated total number of scholars within each discipline. This approach ensures the inclusion of the top 1% of leading scholars while maintaining disciplinary representation. Furthermore, to affirm the discipline-specific impact, the difference between a scientist’s general H-index and their D-index must not exceed 30%, reinforcing the alignment of their overall research influence to the field of Engineering and Technology.
Verification and Validation Procedures
Recognizing the inherent limitations of raw bibliometric data as an absolute measure of scholarly output, the ranking process incorporates rigorous manual verification. All scientist profiles were meticulously reviewed and cross-correlated against publications indexed in a broad array of reliable and trustworthy sources to validate their accuracy and relevance.
While the number of papers published in prestigious journals and conference proceedings does not directly influence a researcher’s ranking position, it serves as a valuable secondary indicator of their scientific contribution. The final ranking assignments rely on each researcher's D-index derived from validated data obtained through OpenAlex and CrossRef.
For a comprehensive overview of the methodologies applied in developing this ranking, readers are encouraged to visit our methodology page.
Research.com’s Mission Behind the Ranking
The creation of this ranking is driven by Research.com’s mission to inspire researchers, academic institutions, corporations, and policymakers worldwide to gain insightful understanding of the trajectories of leading experts in various scientific domains. By making prominent experts visible, the ranking facilitates recognition of top talent within specific areas of study, across different countries and within research organizations. Our goal is to provide an authoritative, transparent, and meticulously curated resource that promotes informed decision-making and supports the advancement of science through enhanced visibility of individual scholarly excellence.
