About the 4th Edition of the Research.com Best Materials Science Universities in New Zealand Ranking
Data Sources and Citation-Based Metrics
The 4th edition of the Research.com Best Materials Science Universities in New Zealand Ranking is underpinned by an extensive and robust data collection process focused primarily on the bibliometric databases OpenAlex and CrossRef, complemented by a range of additional reputable data sources. The bibliometric data essential for developing the citation-based metrics in the ranking were gathered as of 2024-11-27. The methodology is centered on the aggregation of D-indexes (Discipline H-index) from scholars whose primary research discipline is Materials Science and who are affiliated with the ranked institutions. The D-index measurement uniquely emphasizes publications and citations from within the evaluated discipline, ensuring the most accurate reflection of each institution’s research output and impact in Materials Science.
Scope of Research and Scholar Profiling
To define the scope of this ranking, a total of 279,971 scientist profiles were examined, curated from multiple bibliometric resources. Of these, 37,821 scholars specifically engaged in Materials Science were analyzed in detail. For inclusion, each scientist was required to meet a minimum D-index threshold of 40, with the majority of their impactful publications falling within the domain of Materials Science. The cut-off D-index for top researchers is dynamically adjusted in increments of 10 based on the number of scholars in each field, always ensuring the inclusion of the leading 1% globally within the discipline. To maintain specialization, it was necessary for a scientist's general H-index to be within 30% of their D-index. Additionally, individual awards and notable achievements in Materials Science were considered as indicative measures of scholarly influence and contribution to the field.
Verification and Evaluation Practices
Recognizing that quantitative data alone cannot wholly encapsulate scholarly value, every scientist profile was meticulously verified and cross-validated against publication records across a spectrum of reliable sources. Although the sheer volume of papers in prestigious journals and conference proceedings is not a formal factor in determining ranking position, it is recognized as a valuable secondary indicator of a scientist’s impact in their discipline. Rankings ultimately rely on each researcher's D-index as established from comprehensive data extracted from OpenAlex and CrossRef, two of the most respected bibliometric platforms available to the research community. We encourage interested parties to review our methodology page for a detailed breakdown of the ranking process and validation measures employed.
Research.com’s Mission and Agenda
At Research.com, our mission is to stimulate scientific progress and innovation by providing transparent, reliable, and accessible rankings. We aspire to inspire scientists, business leaders, and policymakers to explore the frontiers where top experts are making a difference. Our rankings serve the broader academic and research community by highlighting who the global and regional leaders in specific disciplines are, empowering institutions, researchers, and stakeholders to identify key contributors and collaboration opportunities both within New Zealand and globally.
Key Results of the Ranking
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Top 3 Institutions in New Zealand by Number of Leading Scientists in Materials Science:
- University of Auckland: 6 scientists
- University of Otago: 2 scientists
- Victoria University of Wellington: 1 scientist
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Global Leaders in Materials Science:
The most prominent materials scientists are affiliated with renowned institutions such as Georgia Institute of Technology, École Polytechnique Fédérale de Lausanne, MIT, Harvard University, Stanford University, Drexel University, China University of Geosciences, Rice University, City University of Hong Kong, and Tsinghua University.
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Top Individual Scholars:
- Prof. Zhong Lin Wang (Georgia Institute of Technology) – D-index: 315 – Ranked #1 worldwide
- Prof. Michael Grätzel (École Polytechnique Fédérale de Lausanne) – D-index: 292 – Ranked #2 worldwide
- Prof. Robert Langer (MIT) – D-index: 288 – Ranked #3 worldwide
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Statistical Highlights:
- Average total D-index for the top 5% universities: 3,826
- Average total D-index for all 1,282 ranked institutions: 524
- Average number of published articles in Materials Science at the top 5% universities: 17,885
- Average number of published articles in Materials Science for all universities: 2,500
- Average number of citations for researchers at top 1% universities: 2,279,971
- Average number of citations for researchers at all included universities: 279,971
This meticulous and comprehensive approach to ranking affirms Research.com’s commitment to accuracy, transparency, and the celebration of outstanding academic achievement in Materials Science. We trust that this ranking will serve as a valuable resource for the scientific community and all stakeholders engaged in the advancement of research excellence.