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
![Patrick Ngulube](https://cdn.adscientificindex.com/pictures/94/88662.jpg)
Preservation
Records management
Knowledge management
Research methods
indigenous knowledge
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
177
133
0.751
* Total i10 IndexRankings
Ranking Based On Selection: 2
![David Glasser](https://cdn.adscientificindex.com/pictures/06/106135.jpg)
Fischer-Tropsch
Reactor design
Process Engineering
Comminution
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
140
47
0.336
* Total i10 IndexRankings
Ranking Based On Selection: 3
![Pantaleo D Rwelamila](/user/assets/images/profile/no-profile-photo.png)
Project Management
Procurement Systems and Management
Project Contracts
Construction Industry Development
Small Micro and Me
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
57
25
0.439
* Total i10 IndexRankings
Ranking Based On Selection: 4
![MR (Ruth) De Villiers](https://cdn.adscientificindex.com/pictures/d6/95146.jpg)
Human-Computer Interaction
E-Learning
ICT4D
Research Design and Methodology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
41
20
0.488
* Total i10 IndexRankings
Ranking Based On Selection: 5
![Yali Yao|Yao Yali](https://cdn.adscientificindex.com/pictures/32/92291.jpg)
Coal/Biomass/NaturalGas/Waste to Liquid Fuels
Desulphurization
Syngas Conversion
CO2 Utilization
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
33
30
0.909
* Total i10 IndexRankings
Ranking Based On Selection: 6
![Shohreh Azizi](https://cdn.adscientificindex.com/pictures/a8/4468107.jpg)
Water & Wastewater treatment
Nanotechnology
Photocatalysis
Membrane Technology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
27
25
0.926
* Total i10 IndexRankings
Ranking Based On Selection: 7
![Masilu Daniel Masekameni](https://cdn.adscientificindex.com/pictures/60/5836763.jpg)
Developmental Studies
Exposure and Health
Risk management and policy reform
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
18
13
0.722
* Total i10 IndexRankings
Ranking Based On Selection: 8
![Nampombe Mnkeni Saurombe](https://cdn.adscientificindex.com/pictures/a6/6078481.jpg)
Archival Public Programming and Advocacy
Information for Development
Information Literacy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
18
12
0.667
* Total i10 IndexRankings
Ranking Based On Selection: 9
![Kirstin Em Krauss](https://cdn.adscientificindex.com/pictures/fb/101144.jpg)
Critical Social Theory
ICT for Development
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
17
9
0.529
* Total i10 IndexRankings
Ranking Based On Selection: 10
![Jeanette Maritz](https://cdn.adscientificindex.com/pictures/6a/6077941.jpg)
Postgraduate supervision
advising
coaching
mentoring
research education
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
17
8
0.471
Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast!
* Total i10 IndexRankings
Ranking Based On Selection: 11
![Hadley Clayton](/user/assets/images/profile/no-profile-photo.png)
Organometallic Chemistry
Coordination Chemistry
Computational Chemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
17
7
0.412
* Total i10 IndexRankings
Ranking Based On Selection: 12
![Hemmaragala Nanjundaswamy Marishetty](https://cdn.adscientificindex.com/pictures/e7/6077826.jpg)
Organic synthesis
Biomarkers
Peptides
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
17
5
0.294
* Total i10 IndexRankings
Ranking Based On Selection: 13
![Paul Oluwatosin Bello](https://cdn.adscientificindex.com/pictures/17/5836749.jpg)
Human trafficking
Comparative Criminal justice
Policing
Corrections
Procedural Justice and
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
16
13
0.813
* Total i10 IndexRankings
Ranking Based On Selection: 14
![Mildred A. Airo](https://cdn.adscientificindex.com/pictures/3a/6078246.jpg)
material chemistry and its applications to renewable energy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
16
12
0.750
* Total i10 IndexRankings
Ranking Based On Selection: 15
![Shamila Rouhani](https://cdn.adscientificindex.com/pictures/7b/6078816.jpg)
Nanobiocatalysis
Organic Methodology
Organic Synthesis
Green Chemistry
Phytochemistry and
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
15
13
0.867
* Total i10 IndexRankings
Ranking Based On Selection: 16
![Tshilidzi Netshitangani](/user/assets/images/profile/no-profile-photo.png)
Educational management
gender in education
school violence
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
15
11
0.733
* Total i10 IndexRankings
Ranking Based On Selection: 17
![Dirk Geldenhuys](https://cdn.adscientificindex.com/pictures/c4/6077484.jpg)
Organisation Development
Change management
Systems-Psychodynamics
Appreciative Inquiry
Social constructionism
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
15
8
0.533
* Total i10 IndexRankings
Ranking Based On Selection: 18
![Rothney S Tshaka](https://cdn.adscientificindex.com/pictures/a5/5836730.jpg)
confessional theology
race and racism
Afrophobia
African theology
black theology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
15
7
0.467
* Total i10 IndexRankings
Ranking Based On Selection: 19
![P.Bridjesh](https://cdn.adscientificindex.com/pictures/2a/4552836.jpg)
IC Engines
Thermodynamics
Functionally graded materials
Bamboo
Bioethanol
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
14
13
0.929
* Total i10 IndexRankings
Ranking Based On Selection: 20
![Jan Maluleka](https://cdn.adscientificindex.com/pictures/46/4468110.jpg)
Informetrics
Research collaboration
knowledge management
Indigenous knowledge systems
Records management
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
14
13
0.929
* Total i10 IndexRankings
Ranking Based On Selection: 21
![Mthembu](/user/assets/images/profile/no-profile-photo.png)
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
14
9
0.643
* Total i10 IndexRankings
Ranking Based On Selection: 22
![Tsholofelo Mashigo](/user/assets/images/profile/no-profile-photo.png)
general action
books
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
14
8
0.571
* Total i10 IndexRankings
Ranking Based On Selection: 23
![Michelle S May](https://cdn.adscientificindex.com/pictures/6b/5836740.jpg)
Diversity
systems psychodynamics
socio-analytic methods
women in leadership
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
14
7
0.500
* Total i10 IndexRankings
Ranking Based On Selection: 24
![Wessel Bentley](https://cdn.adscientificindex.com/pictures/63/4468128.jpg)
Science and Religion
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
14
3
0.214
* Total i10 IndexRankings
Ranking Based On Selection: 25
![Munyaradzi Chitakira](https://cdn.adscientificindex.com/pictures/f5/4468142.jpg)
Integrated agriculture-biodiversity landscapes management
Climate smart livelihoods
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
13
12
0.923
Patrick Ngulube
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
177
133
0.751
Preservation
Records management
Knowledge management
Research methods
indigenous knowledge
David Glasser
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
140
47
0.336
Pantaleo D Rwelamila
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
57
25
0.439
Project Management
Procurement Systems and Management
Project Contracts
Construction Industry Development
Small Micro and Me
MR (Ruth) De Villiers
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
41
20
0.488
Human-Computer Interaction
E-Learning
ICT4D
Research Design and Methodology
Yali Yao|Yao Yali
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
33
30
0.909
Coal/Biomass/NaturalGas/Waste to Liquid Fuels
Desulphurization
Syngas Conversion
CO2 Utilization
Shohreh Azizi
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
27
25
0.926
Water & Wastewater treatment
Nanotechnology
Photocatalysis
Membrane Technology
Masilu Daniel Masekameni
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
18
13
0.722
Developmental Studies
Exposure and Health
Risk management and policy reform
Nampombe Mnkeni Saurombe
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
18
12
0.667
Archival Public Programming and Advocacy
Information for Development
Information Literacy
Kirstin Em Krauss
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
17
9
0.529
Jeanette Maritz
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
17
8
0.471
Postgraduate supervision
advising
coaching
mentoring
research education
Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast!
Hadley Clayton
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
17
7
0.412
Organometallic Chemistry
Coordination Chemistry
Computational Chemistry
Hemmaragala Nanjundaswamy Marishetty
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
17
5
0.294
Paul Oluwatosin Bello
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
16
13
0.813
Human trafficking
Comparative Criminal justice
Policing
Corrections
Procedural Justice and
Mildred A. Airo
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
16
12
0.750
Shamila Rouhani
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
15
13
0.867
Nanobiocatalysis
Organic Methodology
Organic Synthesis
Green Chemistry
Phytochemistry and
Tshilidzi Netshitangani
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
15
11
0.733
Dirk Geldenhuys
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
15
8
0.533
Organisation Development
Change management
Systems-Psychodynamics
Appreciative Inquiry
Social constructionism
Rothney S Tshaka
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
15
7
0.467
confessional theology
race and racism
Afrophobia
African theology
black theology
P.Bridjesh
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
14
13
0.929
IC Engines
Thermodynamics
Functionally graded materials
Bamboo
Bioethanol
Jan Maluleka
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
14
13
0.929
Informetrics
Research collaboration
knowledge management
Indigenous knowledge systems
Records management
Mthembu
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
14
9
0.643
Tsholofelo Mashigo
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
14
8
0.571
Michelle S May
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
14
7
0.500
Diversity
systems psychodynamics
socio-analytic methods
women in leadership
Wessel Bentley
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
14
3
0.214
Munyaradzi Chitakira
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
13
12
0.923
Integrated agriculture-biodiversity landscapes management
Climate smart livelihoods