Institutional positions in the ranking are determined by aggregating the D-indexes (Discipline H-index) of all ranking scholars affiliated with each university whose main research area is Engineering and Technology. The D-index is based exclusively on publications and citation data within the specific discipline, ensuring a precise reflection of institutional strength in the field.
Scope of Research and Selection Criteria
A global pool of 279,971 scientist profiles was identified from a range of bibliometric data sources, from which 50,429 scientists specializing in Engineering and Technology were selected for detailed analysis. To qualify, a scholar was required to have a minimum D-index of 30, and the majority of their highest-tier publications needed to fall within Engineering and Technology.
In addition to bibliometric thresholds, scientists’ awards and achievements in the field were significant factors in the evaluation. The D-index threshold for identifying top-tier researchers is dynamically adjusted in increments of 10, tailored to the size of each discipline, while ensuring the inclusion of the top 1% of leading scholars. To maintain precision, there is a verified proximity of 30% or less between an individual scientist’s general H-index and their D-index.
This dual-criteria approach ensures that only those scholars who demonstrate both depth and focused impact within Engineering and Technology, as well as recognized accomplishment, are included in the assessment.
Verification and Quality Assurance Practices
The research team behind this ranking recognizes the inherent limitations of raw bibliometric data in wholly representing scholars’ output. To mitigate this, each scientist profile underwent manual verification and cross-correlation with reputable publication sources. This included validation against prominent journals and conference proceedings as a secondary indicator of research contribution, though these figures do not directly affect a scholar's ranking position.
A scholar’s position in the ranking is fundamentally established based on the H-index (and D-index) as extracted from OpenAlex and CrossRef, the two most authoritative bibliometric databases accessible to the scientific community. Comprehensive details about the data gathering and evaluation criteria are transparently outlined on our methodology page.
Research.com Mission and Objectives
Our mission at Research.com is to inspire and inform scientists, academics, business leaders, and policymakers worldwide by mapping trends among top experts in every discipline and highlighting institutions where impactful research is taking place. Through these rankings, we aim to provide the research community with authoritative tools to identify leading specialists in diverse disciplines, across countries, and within individual institutions.
Key Results of the 4th Edition Ranking
- Top 3 institutions in Iran with the highest number of leading scientists in Engineering and Technology:
- University of Tehran (28 scientists)
- Sharif University of Technology (12 scientists)
- University of Tabriz (9 scientists)
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Most prominent global scholars in Engineering and Technology (representing):
- Rice University
- Pennsylvania State University
- University College Dublin
- HEC Montréal
- Quaid-i-Azam University
- Northwestern University
- Stanford University
- Carnegie Mellon University
- Penn State Harrisburg
- The University of Texas at Arlington
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Top 3 scholars in the world in Engineering and Technology:
- Professor Frederick E. Shelton (Johnson & Johnson, United States) – D-index: 257
- Menachem Elimelech (Rice University) – D-index: 200
- Bruce E. Logan (Pennsylvania State University) – D-index: 163
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Average metrics for leading institutions:
- Average total D-index (top 5% universities): 2073
- Average total D-index (all 1290 institutions): 305
- Average number of published articles in Engineering and Technology (top 5%): 10,087
- Average number of published articles (all 1290 universities): 1,480
- Average number of citations (top 1% universities): 1,279,971
- Average number of citations (all 1290 universities): 71,259
This comprehensive and meticulously curated ranking reflects the depth of research excellence in Engineering and Technology both in Iran and globally, while supporting transparent, data-driven evaluation to guide the academic and scientific communities. For further in-depth information regarding data collection, validation, and ranking processes, please visit our methodology page.
