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
![Karuti Kanyinga|Henry Karuti Kanyinga, HK Kanyinga, k karuti](https://cdn.adscientificindex.com/pictures/83/100791.jpg)
Governance and political economy of development
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
77
37
0.481
* Total i10 IndexRankings
Ranking Based On Selection: 2
![Winnie Mitullah](https://cdn.adscientificindex.com/pictures/b4/92202.jpg)
Goverannce
instituions and policy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
68
23
0.338
* Total i10 IndexRankings
Ranking Based On Selection: 3
![Mary Njenga](/user/assets/images/profile/no-profile-photo.png)
Bioenergy
Natural Resource Management (NRM)
Gender
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
57
40
0.702
* Total i10 IndexRankings
Ranking Based On Selection: 4
![Fiona Flintan](/user/assets/images/profile/no-profile-photo.png)
Rangelands
pastoralism
gender
participatory action research
global advocacy/lobbying
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
39
18
0.462
* Total i10 IndexRankings
Ranking Based On Selection: 5
![Madoyi Brian](/user/assets/images/profile/no-profile-photo.png)
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
38
16
0.421
* Total i10 IndexRankings
Ranking Based On Selection: 6
![Jimmy Pittchar](/user/assets/images/profile/no-profile-photo.png)
Interfacing natural and social science research
technology development and diffussion
impact pathways
sustainable intensifica
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
34
30
0.882
* Total i10 IndexRankings
Ranking Based On Selection: 7
![Maria Nzomo](/user/assets/images/profile/no-profile-photo.png)
International Relations
Governance
Human Rights and Gender Studies
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
33
5
0.152
* Total i10 IndexRankings
Ranking Based On Selection: 8
![Fredrick Wanyama](https://cdn.adscientificindex.com/pictures/6d/97896.jpg)
Political Science - Development Politics
Comparative Politics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
28
15
0.536
* Total i10 IndexRankings
Ranking Based On Selection: 9
![Godwin Murunga](https://cdn.adscientificindex.com/pictures/ff/98342.jpg)
Democratisation Processes
Peacebuilding in Africa
Urban Historu
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
22
9
0.409
* Total i10 IndexRankings
Ranking Based On Selection: 10
![Katumanga Musambayi](https://cdn.adscientificindex.com/pictures/d5/100823.jpg)
Political Theory
Security and Strategic studies
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
15
4
0.267
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* Total i10 IndexRankings
Ranking Based On Selection: 11
![John Waithaka](https://cdn.adscientificindex.com/pictures/ac/100323.jpg)
Education
Management
International Relations
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
13
5
0.385
* Total i10 IndexRankings
Ranking Based On Selection: 12
![Joseph Kiplang'at](https://cdn.adscientificindex.com/pictures/e7/4975112.jpg)
Information and Knowledge Mangement
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
6
0.600
* Total i10 IndexRankings
Ranking Based On Selection: 13
![Francis Onditi](https://cdn.adscientificindex.com/pictures/e1/4306246.jpg)
Conflictology
evolutionary theories
APSA
equalitarianism
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
9
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 14
![Fredrick Otike](https://cdn.adscientificindex.com/pictures/2f/4501156.jpg)
Library innovation
information strategies
Publishing
Information Literacy
Library research
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
8
0.889
* Total i10 IndexRankings
Ranking Based On Selection: 15
![Simon Ngigi|Simon K. Ngigi, Simon Kangethe Ngigi](https://cdn.adscientificindex.com/pictures/4b/4496383.jpg)
Teacher Training
Gender Equity
Education in emergencies
Research methodology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
8
0.889
* Total i10 IndexRankings
Ranking Based On Selection: 16
![Wanyenda Chilimo](https://cdn.adscientificindex.com/pictures/13/4514390.jpg)
Information Science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
5
0.556
* Total i10 IndexRankings
Ranking Based On Selection: 17
![Jairus Odawa Malenje](https://cdn.adscientificindex.com/pictures/dd/4525668.jpg)
Information Systems Development
Business Process Reengineering
Urban Transportation systems development
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
5
0.833
* Total i10 IndexRankings
Ranking Based On Selection: 18
![Dorothy M Njiraine](https://cdn.adscientificindex.com/pictures/08/5832229.jpg)
Library and Information Science
Digital Libraries
Knowledge Management
Human Resource Management
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
5
0.833
* Total i10 IndexRankings
Ranking Based On Selection: 19
![Samwel Auya](https://cdn.adscientificindex.com/pictures/00/4496266.jpg)
Research Interest: Food Security
Land Tenure
Devolution and Gender Issues
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
2
0.333
* Total i10 IndexRankings
Ranking Based On Selection: 20
![Timothy Gachanga](https://cdn.adscientificindex.com/pictures/7c/4308173.jpg)
Peace
heritage
education
community peace museums
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
1
0.167
* Total i10 IndexRankings
Ranking Based On Selection: 21
![Clifford Collins Omondi Okwany](https://cdn.adscientificindex.com/pictures/ba/4648689.jpg)
Political Science
International Relations
Security
Foreign Policy
Political Philosophy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
5
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 22
![Kevin Maraka Ndiema](https://cdn.adscientificindex.com/pictures/71/4920409.jpg)
Highway Engineering
Railway Engineering
Transportation Engineering
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
5
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 23
![Achuora John](https://cdn.adscientificindex.com/pictures/48/102331.jpg)
Supply Chain Management
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
4
0.800
* Total i10 IndexRankings
Ranking Based On Selection: 24
![Merab Odero](/user/assets/images/profile/no-profile-photo.png)
women's health
HIV
Gender based Violence
reproductive health
malaria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
4
0.800
* Total i10 IndexRankings
Ranking Based On Selection: 25
![Raymond Wafula Ongus](https://cdn.adscientificindex.com/pictures/78/4496063.jpg)
Information Technology
Information Science
Knowledge Management
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
3
0.600
Karuti Kanyinga|Henry Karuti Kanyinga, HK Kanyinga, k karuti
University of Nairobi
Nairobi, Kenya
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
77
37
0.481
Governance and political economy of development
Winnie Mitullah
University of Nairobi
Nairobi, Kenya
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
68
23
0.338
Mary Njenga
World Agroforestry (ICRAF)
Nairobi, Kenya
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
57
40
0.702
Bioenergy
Natural Resource Management (NRM)
Gender
Fiona Flintan
International Livestock Research Institute (ILRI)
Addis Ababa, Kenya
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
39
18
0.462
Rangelands
pastoralism
gender
participatory action research
global advocacy/lobbying
Madoyi Brian
Kenyatta University
Nairobi, Kenya
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
38
16
0.421
Jimmy Pittchar
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
34
30
0.882
Interfacing natural and social science research
technology development and diffussion
impact pathways
sustainable intensifica
Maria Nzomo
University of Nairobi
Nairobi, Kenya
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
33
5
0.152
International Relations
Governance
Human Rights and Gender Studies
Fredrick Wanyama
Maseno University
Maseno, Kenya
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
28
15
0.536
Political Science - Development Politics
Comparative Politics
Godwin Murunga
University of Nairobi
Nairobi, Kenya
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
22
9
0.409
Democratisation Processes
Peacebuilding in Africa
Urban Historu
Katumanga Musambayi
University of Nairobi
Nairobi, Kenya
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
15
4
0.267
Political Theory
Security and Strategic studies
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John Waithaka
Kenyatta University
Nairobi, Kenya
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
13
5
0.385
Education
Management
International Relations
Joseph Kiplang'at
Technical University of Kenya
Nairobi, Kenya
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
6
0.600
Information and Knowledge Mangement
Francis Onditi
Riara University
Nairobi, Kenya
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
9
1.000
Conflictology
evolutionary theories
APSA
equalitarianism
Fredrick Otike
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
8
0.889
Library innovation
information strategies
Publishing
Information Literacy
Library research
Simon Ngigi|Simon K. Ngigi, Simon Kangethe Ngigi
KCA University
Nairobi, Kenya
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
8
0.889
Teacher Training
Gender Equity
Education in emergencies
Research methodology
Wanyenda Chilimo
Technical University of Mombasa
Mombasa, Kenya
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
5
0.556
Jairus Odawa Malenje
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
5
0.833
Information Systems Development
Business Process Reengineering
Urban Transportation systems development
Dorothy M Njiraine
University of Nairobi
Nairobi, Kenya
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
5
0.833
Library and Information Science
Digital Libraries
Knowledge Management
Human Resource Management
Samwel Auya
Egerton University
Njoro, Kenya
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
2
0.333
Research Interest: Food Security
Land Tenure
Devolution and Gender Issues
Timothy Gachanga
Tangaza University College
Nairobi, Kenya
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
1
0.167
Peace
heritage
education
community peace museums
Clifford Collins Omondi Okwany
University of Nairobi
Nairobi, Kenya
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
5
1.000
Political Science
International Relations
Security
Foreign Policy
Political Philosophy
Kevin Maraka Ndiema
University of Eldoret
Eldoret, Kenya
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
5
1.000
Highway Engineering
Railway Engineering
Transportation Engineering
Achuora John
Machakos University
Machakos, Kenya
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
4
0.800
Supply Chain Management
Merab Odero
Kenya Medical Research Institute
Nairobi, Kenya
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
4
0.800
women's health
HIV
Gender based Violence
reproductive health
malaria
Raymond Wafula Ongus
Mount Kenya University
Thika, Kenya
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
3
0.600
Information Technology
Information Science
Knowledge Management