A scientist’s position in the ranking is determined by their D-index (Discipline H-index), a refined bibliometric measure that evaluates citation impact exclusively within the examined discipline—in this case, Materials Science. This targeted approach ensures that the ranking faithfully reflects a researcher’s domain-specific contributions rather than general academic output.
Scope of Research and Inclusion Criteria
The ranking review process analyzed a total of 279,971 scientist profiles identified across diverse bibliometric data sources spanning all scientific disciplines. From this comprehensive dataset, a focused examination was conducted on 2 scientists specializing specifically in Materials Science.
To qualify for inclusion in this ranking, a scientist was required to meet a minimum D-index threshold of 40. Additionally, the majority of their tier publications had to be definitively situated within Materials Science to ensure relevance. Recognition of awards and notable achievements within the Materials Science domain also informed the assessment.
The D-index thresholds are dynamically set in increments of 10, commensurate with the estimated population of scholars in each discipline. This methodology guarantees the inclusion of the top 1% of leading researchers, fostering an elite yet representative cohort. Further, qualification requires that the proximity between a scholar’s general H-index and their discipline-specific D-index does not exceed 30%, ensuring consistent domain focus versus general citation impact.
Verification Practices and Methodological Transparency
Understanding that raw bibliometric data cannot serve as an absolute measure of scholarly value, the ranking team has implemented rigorous manual verification procedures. Each scientist’s profile was thoroughly cross-checked against authoritative publication sources to confirm accuracy and authenticity. This meticulous process adds an essential layer of validation beyond automated data collection.
While not directly factored into ranking positions, the volume of publications in prominent journals and leading conference proceedings is acknowledged as a valuable secondary signal illuminating a scientist’s overall research impact and visibility within Materials Science.
The D-index calculation and final ranking positions are established using data exclusively derived from OpenAlex and CrossRef, both recognized as premier and highly credible bibliometric databases within the global research community. For an in-depth explanation of the ranking methodology, we invite readers to explore our methodology page.
Research.com’s Mission and Vision
Research.com is dedicated to fostering transparency and recognition within the scientific community. Our mission through the creation of this ranking is to motivate researchers, corporations, and policymakers worldwide to monitor the trajectories of leading experts. By facilitating awareness of who the foremost specialists are in specific scientific disciplines, countries, and institutions, we aim to empower informed decision-making and strategic collaboration.
This ranking represents the culmination of diligent, principled work intended to build a credible, respected resource that highlights excellence and encourages continued advancement in Materials Science research across Iraq and beyond.
