Total 2,403,032 scientists, country 221, and institutions 24,466 are evaluated in the Productivity Rankings, an exclusive service provided by AD Scientific Index. This ranking measures and highlights the scientific productivity of researchers based on the i10 index (number of publications with at least 10 citations). This system identifies highly productive scientists across disciplines, institutions, and regions, contributing to the development of evidence-based academic policies and effective incentive mechanisms. The rankings include global, regional, and institutional analyses, along with specialized rankings such as Scientists' Last 6 Years' i10 Index and Universities' i10 Index Rankings 2025. With Premium Membership, you can:
- Gain full access to detailed comparisons and advanced analytics,
- Objectively evaluate your academic productivity,
- Make strategic, data-driven decisions to enhance performance.
* Total i10 IndexRankings
Ranking Based On Selection: 1
![Ty Leung](/user/assets/images/profile/no-profile-photo.png)
audit fee
corporate governance
executive compensation
political connections
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
34
22
0.647
* Total i10 IndexRankings
Ranking Based On Selection: 2
![Stephan Ortmann](https://cdn.adscientificindex.com/pictures/89/476644.jpg)
Comparative politics
Asian politics
Singapore politics
Hong Kong politics
Chinese and Vietnamese politics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
24
19
0.792
* Total i10 IndexRankings
Ranking Based On Selection: 3
![Wai-Man Lam](https://cdn.adscientificindex.com/pictures/c6/528171.jpg)
identity politics
political culture and participation
civil society
democratization
state
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
21
11
0.524
Ty Leung
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
34
22
0.647
audit fee
corporate governance
executive compensation
political connections
Stephan Ortmann
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
24
19
0.792
Comparative politics
Asian politics
Singapore politics
Hong Kong politics
Chinese and Vietnamese politics
Wai-Man Lam
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
21
11
0.524
identity politics
political culture and participation
civil society
democratization
state