Data Sources and Citation Metrics
The 5th edition of the Research.com Best Mechanical and Aerospace Engineering Scientists in Jordan Ranking is primarily based on comprehensive bibliometric data collected from reputable sources including OpenAlex and CrossRef, augmented by several other authoritative data providers. The bibliography metrics employed for this ranking were extracted on January 12, 2026, ensuring the most up-to-date and reliable data available at the time of compilation.
The ranking methodology centers on the D-index (Discipline H-index), a metric that quantifies a researcher’s academic impact exclusively within the specific discipline under evaluation. Unlike a general H-index, the D-index focuses solely on publications and citations directly related to Mechanical and Aerospace Engineering, providing a precise measure of scholarly influence in this specialized field.
Scope of Research and Eligibility Criteria
The scope of the ranking encompasses a broad base of 279,971 scientist profiles initially identified across various bibliometric datasets spanning all academic disciplines. Among these, a focused subset of researchers specializing in Mechanical and Aerospace Engineering was thoroughly examined.
To qualify for inclusion, candidates were required to have a minimum D-index of 30, reflecting significant scholarly contributions within the discipline. Additionally, a majority of their tier publications needed to be situated explicitly in Mechanical and Aerospace Engineering. Beyond bibliometric thresholds, each scientist’s awards and documented achievements within the field were carefully considered as complementary indicators of academic excellence.
The D-index cutoff is dynamically set in increments of 10 relative to the estimated total number of researchers within each discipline. This approach ensures that the top 1% of leading scholars in Mechanical and Aerospace Engineering are comprehensively represented. Furthermore, eligibility required the difference between a scientist’s general H-index and their discipline-specific D-index to be less than or equal to 30%, ensuring consistency in their research focus.
Additional Verification Practices
Recognizing the limitations inherent in raw bibliometric data, the team behind this ranking applied meticulous manual verification for each scientist profile. This validation process included cross-referencing publication records across a variety of trustworthy sources to confirm accuracy and authenticity.
While the number of papers published in top-tier journals and conferences does not directly determine ranking position, it remains a valuable secondary indicator of a researcher’s contribution to Mechanical and Aerospace Engineering. The ranking’s primary determination is founded on the carefully calculated D-index, extracted from data sourced from OpenAlex and CrossRef—recognized as the most prominent and trusted bibliometric databases serving the global research community.
For a detailed exposition of the methodology and criteria behind this ranking, readers are encouraged to visit our methodology page.
Research.com’s Mission
At Research.com, our overarching mission is to inspire researchers, corporate entities, and policymakers worldwide to explore emerging trends and leadership within academic disciplines. We aim to provide a transparent and authoritative platform that facilitates the identification of leading experts across diverse areas of study, countries, and research institutions. By doing so, we seek to foster a deeper understanding of scientific advancement and to promote collaboration and recognition within the global research ecosystem.
