Citation Rankings (Highly Cited Researchers) 2024 and list of influential and most cited researchers in Agriculture and Forestry, Art, Design and Architecture, Business and Management, Economics and Econometrics, Education, Engineering and Technology, History, Philosophy, Theology, Law, Medicine and Health Sciences, Natural Sciences and Social Sciences and their 256 sub-branches is a unique service offered only by “AD Scientific Index”. You can see the most cited and influential researchers in the country and region. See also for more specific citation analyses: "last 6 years citation index" Universities Rankings 2024 (Sort by: Total Citations) and Universities Rankings 2024 (Sort by : Last 6 Years Citations)
* Total Citation Counts Rankings
World Rank
1,318,169
Country Rank
51
Institution Rank : 24
![](https://cdn.adscientificindex.com/logos/6383.jpg)
![Sierra Leone](/flags/sl.png)
![Joseph Sherman Kamara](https://cdn.adscientificindex.com/pictures/07/4360681.jpg)
Posthavest food and bioprocess engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
129
100
0.775
* Total Citation Counts Rankings
World Rank
1,334,241
Country Rank
52
Institution Rank : 25
![](https://cdn.adscientificindex.com/logos/6383.jpg)
![Sierra Leone](/flags/sl.png)
![Olapade Olufemi Julius](https://cdn.adscientificindex.com/pictures/c9/4986728.jpg)
Fish nutrition
Toxicology and Project Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
123
94
0.764
* Total Citation Counts Rankings
World Rank
1,352,777
Country Rank
53
Institution Rank : 26
![](https://cdn.adscientificindex.com/logos/6383.jpg)
![Sierra Leone](/flags/sl.png)
![Alusine Hassan Koroma](/pictures/ff/4986730.jpg)
Biomedical Science and Environmental sciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
116
116
1.000
* Total Citation Counts Rankings
World Rank
1,373,349
Country Rank
54
Institution Rank : 27
![](https://cdn.adscientificindex.com/logos/6383.jpg)
![Sierra Leone](/flags/sl.png)
![Samuel Maxwell Tom Williams](/pictures/d1/4986732.jpg)
Public Health
Zoonotic Diseases and Epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
109
109
1.000
* Total Citation Counts Rankings
World Rank
1,376,976
Country Rank
55
Institution Rank : 15
![](https://cdn.adscientificindex.com/logos/11375.jpg)
![Sierra Leone](/flags/sl.png)
![Amadu Fullah Kamara](https://cdn.adscientificindex.com/pictures/4b/4986745.jpg)
Deep Learning
AI
Data Mining
Machine Learning
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
108
102
0.944
* Total Citation Counts Rankings
World Rank
1,380,489
Country Rank
56
Institution Rank : 6
![](https://cdn.adscientificindex.com/logos/16744.png)
![Sierra Leone](/flags/sl.png)
![Gibrilla Dumbuya](https://cdn.adscientificindex.com/pictures/68/4480518.jpg)
Climate change
Agronomy
Crop physiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
107
92
0.860
* Total Citation Counts Rankings
World Rank
1,382,105
Country Rank
57
Institution Rank : 2
![](https://cdn.adscientificindex.com/logos/11159.png)
![Sierra Leone](/flags/sl.png)
![Abdul Rahaman AU Sesay](https://cdn.adscientificindex.com/pictures/10/4986750.jpg)
Political Science
International Relations
Globalization
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
106
106
1.000
* Total Citation Counts Rankings
World Rank
1,399,498
Country Rank
58
Institution Rank : 28
![](https://cdn.adscientificindex.com/logos/6383.jpg)
![Sierra Leone](/flags/sl.png)
![Michael Conteh](https://cdn.adscientificindex.com/pictures/3f/4986731.jpg)
Physical Activity & Public Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
101
93
0.921
* Total Citation Counts Rankings
World Rank
1,426,579
Country Rank
59
Institution Rank : 16
![](https://cdn.adscientificindex.com/logos/11375.jpg)
![Sierra Leone](/flags/sl.png)
![Obai Kargbo](https://cdn.adscientificindex.com/pictures/40/4108477.jpg)
Wave Hydrodynamics
Harbour Engineering
Coastal Zone Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
93
90
0.968
* Total Citation Counts Rankings
World Rank
1,465,381
Country Rank
60
Institution Rank : 29
![](https://cdn.adscientificindex.com/logos/6383.jpg)
![Sierra Leone](/flags/sl.png)
![Joseph James Mbavai](https://cdn.adscientificindex.com/pictures/d7/4986733.jpg)
Community Development Studies
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
83
73
0.880
* Total Citation Counts Rankings
World Rank
1,501,700
Country Rank
61
Institution Rank : 30
![](https://cdn.adscientificindex.com/logos/6383.jpg)
![Sierra Leone](/flags/sl.png)
![Prince T Mabey](/user/assets/images/profile/no-profile-photo.png)
Sustainable Environmental Management
Environmental Health
Ecological Conservation and Natural Resources Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
74
74
1.000
* Total Citation Counts Rankings
World Rank
1,507,120
Country Rank
62
Institution Rank : 1
![](https://cdn.adscientificindex.com/logos/24355.jpg)
![Sierra Leone](/flags/sl.png)
![Edward Hingha Foday Jr](https://cdn.adscientificindex.com/pictures/fb/5083142.jpg)
Climate Change
Development Studies
Ecotoxicology
Environmental Remediation
Wastewater treatment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
73
72
0.986
* Total Citation Counts Rankings
World Rank
1,541,104
Country Rank
63
Institution Rank : 4
![](https://cdn.adscientificindex.com/logos/16816.png)
![Sierra Leone](/flags/sl.png)
![Morlai Bangura](/pictures/3c/4488336.jpg)
MACROECONOMIC POLICY MANAGEMENT
APPLIED ECONOMETRICS AND MONETARY POLICY
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
66
55
0.833
* Total Citation Counts Rankings
World Rank
1,544,756
Country Rank
64
Institution Rank : 17
![](https://cdn.adscientificindex.com/logos/11375.jpg)
![Sierra Leone](/flags/sl.png)
![Sallieu Kabay Samura](https://cdn.adscientificindex.com/pictures/0a/4986746.jpg)
Probability Limit Theory of Dependent Variables
Nonparametric and Semiparametric models
Nonlinear Statistical Models
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
65
63
0.969
* Total Citation Counts Rankings
World Rank
1,563,103
Country Rank
65
Institution Rank : 31
![](https://cdn.adscientificindex.com/logos/6383.jpg)
![Sierra Leone](/flags/sl.png)
![Maurice Sesay](/pictures/9a/4360882.jpg)
Smart Antenna Design
Photonic Crystal Structure and Optical Devices
Microcontroller applications
Broadband Technologies
Telecommunications Traffic Analysis.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
62
10
0.161
* Total Citation Counts Rankings
World Rank
1,566,787
Country Rank
66
Institution Rank : 32
![](https://cdn.adscientificindex.com/logos/6383.jpg)
![Sierra Leone](/flags/sl.png)
![Sheku Kanteh](/pictures/94/4488419.jpg)
Entomology
Weed Science
Organic agriculture
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
61
44
0.721
* Total Citation Counts Rankings
World Rank
1,578,147
Country Rank
67
Institution Rank : 33
![](https://cdn.adscientificindex.com/logos/6383.jpg)
![Sierra Leone](/flags/sl.png)
![Mr. Sheku Kenway Moiforay](/pictures/ec/4986734.jpg)
Ruminant Nutrition and Production
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
59
32
0.542
* Total Citation Counts Rankings
World Rank
1,588,250
Country Rank
68
Institution Rank : 18
![](https://cdn.adscientificindex.com/logos/11375.jpg)
![Sierra Leone](/flags/sl.png)
![Michael A. Conteh](/pictures/de/4575193.jpg)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
57
42
0.737
* Total Citation Counts Rankings
World Rank
1,593,873
Country Rank
69
Institution Rank : 34
![](https://cdn.adscientificindex.com/logos/6383.jpg)
![Sierra Leone](/flags/sl.png)
![Brima Gegbe](https://cdn.adscientificindex.com/pictures/27/4488218.jpg)
Statistics
Mathematical Modeling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
56
41
0.732
* Total Citation Counts Rankings
World Rank
1,603,825
Country Rank
70
Institution Rank : 35
![](https://cdn.adscientificindex.com/logos/6383.jpg)
![Sierra Leone](/flags/sl.png)
![Mohamed Exton Zoker](/pictures/33/4986738.jpg)
Biodiversity and Conservation
Laboratory Research
Epidemiology
General Biology
Public Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
54
51
0.944
* Total Citation Counts Rankings
World Rank
1,615,724
Country Rank
71
Institution Rank : 36
![](https://cdn.adscientificindex.com/logos/6383.jpg)
![Sierra Leone](/flags/sl.png)
![Daniel Kaitibi](/pictures/da/4568555.jpg)
Health Information
Information Technology
Telecommunications
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52
47
0.904
* Total Citation Counts Rankings
World Rank
1,617,084
Country Rank
72
Institution Rank : 37
![](https://cdn.adscientificindex.com/logos/6383.jpg)
![Sierra Leone](/flags/sl.png)
![Umaru Mohamed Gassama](/pictures/15/4488446.jpg)
Crop production and physiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52
36
0.692
* Total Citation Counts Rankings
World Rank
1,630,891
Country Rank
73
Institution Rank : 1
![](https://cdn.adscientificindex.com/logos/5744.png)
![Sierra Leone](/flags/sl.png)
![Abdul Joseph Fofanah](/pictures/1a/4658685.jpg)
machine learning
deep learning
artificial intelligence
image processing
health systems
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49
49
1.000
* Total Citation Counts Rankings
World Rank
1,645,071
Country Rank
74
Institution Rank : 38
![](https://cdn.adscientificindex.com/logos/6383.jpg)
![Sierra Leone](/flags/sl.png)
![Mohamed Matthew Blango](https://cdn.adscientificindex.com/pictures/dc/4575696.jpg)
Agricultural Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
47
46
0.979
* Total Citation Counts Rankings
World Rank
1,667,860
Country Rank
75
Institution Rank : 19
![](https://cdn.adscientificindex.com/logos/11375.jpg)
![Sierra Leone](/flags/sl.png)
![Olutola Fagbolu](/pictures/76/4577518.jpg)
Natural Language Processing
Quantum Computation
Human Computer Interaction
Software Development & Security
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44
29
0.659
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,318,169
![Sierra Leone](/flags/sl.png)
51
![](https://cdn.adscientificindex.com/logos/6383.jpg)
24
Joseph Sherman Kamara
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
129
100
0.775
![](https://cdn.adscientificindex.com/logos/6383.jpg)
Posthavest food and bioprocess engineering
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,334,241
![Sierra Leone](/flags/sl.png)
52
![](https://cdn.adscientificindex.com/logos/6383.jpg)
25
Olapade Olufemi Julius
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
123
94
0.764
![](https://cdn.adscientificindex.com/logos/6383.jpg)
Fish nutrition
Toxicology and Project Management
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,352,777
![Sierra Leone](/flags/sl.png)
53
![](https://cdn.adscientificindex.com/logos/6383.jpg)
26
Alusine Hassan Koroma
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
116
116
1.000
![](https://cdn.adscientificindex.com/logos/6383.jpg)
Biomedical Science and Environmental sciences
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,373,349
![Sierra Leone](/flags/sl.png)
54
![](https://cdn.adscientificindex.com/logos/6383.jpg)
27
Samuel Maxwell Tom Williams
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
109
109
1.000
![](https://cdn.adscientificindex.com/logos/6383.jpg)
Public Health
Zoonotic Diseases and Epidemiology
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,376,976
![Sierra Leone](/flags/sl.png)
55
![](https://cdn.adscientificindex.com/logos/11375.jpg)
15
Amadu Fullah Kamara
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
108
102
0.944
![](https://cdn.adscientificindex.com/logos/11375.jpg)
Deep Learning
AI
Data Mining
Machine Learning
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,380,489
![Sierra Leone](/flags/sl.png)
56
![](https://cdn.adscientificindex.com/logos/16744.png)
6
Gibrilla Dumbuya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
107
92
0.860
![](https://cdn.adscientificindex.com/logos/16744.png)
Climate change
Agronomy
Crop physiology
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,382,105
![Sierra Leone](/flags/sl.png)
57
![](https://cdn.adscientificindex.com/logos/11159.png)
2
Abdul Rahaman AU Sesay
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
106
106
1.000
![](https://cdn.adscientificindex.com/logos/11159.png)
Political Science
International Relations
Globalization
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,399,498
![Sierra Leone](/flags/sl.png)
58
![](https://cdn.adscientificindex.com/logos/6383.jpg)
28
Michael Conteh
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
101
93
0.921
![](https://cdn.adscientificindex.com/logos/6383.jpg)
Physical Activity & Public Health
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,426,579
![Sierra Leone](/flags/sl.png)
59
![](https://cdn.adscientificindex.com/logos/11375.jpg)
16
Obai Kargbo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
93
90
0.968
![](https://cdn.adscientificindex.com/logos/11375.jpg)
Wave Hydrodynamics
Harbour Engineering
Coastal Zone Management
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,465,381
![Sierra Leone](/flags/sl.png)
60
![](https://cdn.adscientificindex.com/logos/6383.jpg)
29
Joseph James Mbavai
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
83
73
0.880
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* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,501,700
![Sierra Leone](/flags/sl.png)
61
![](https://cdn.adscientificindex.com/logos/6383.jpg)
30
Prince T Mabey
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
74
74
1.000
![](https://cdn.adscientificindex.com/logos/6383.jpg)
Sustainable Environmental Management
Environmental Health
Ecological Conservation and Natural Resources Management
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,507,120
![Sierra Leone](/flags/sl.png)
62
![](https://cdn.adscientificindex.com/logos/24355.jpg)
1
Edward Hingha Foday Jr
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
73
72
0.986
![](https://cdn.adscientificindex.com/logos/24355.jpg)
Climate Change
Development Studies
Ecotoxicology
Environmental Remediation
Wastewater treatment
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,541,104
![Sierra Leone](/flags/sl.png)
63
![](https://cdn.adscientificindex.com/logos/16816.png)
4
Morlai Bangura
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
66
55
0.833
![](https://cdn.adscientificindex.com/logos/16816.png)
MACROECONOMIC POLICY MANAGEMENT
APPLIED ECONOMETRICS AND MONETARY POLICY
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,544,756
![Sierra Leone](/flags/sl.png)
64
![](https://cdn.adscientificindex.com/logos/11375.jpg)
17
Sallieu Kabay Samura
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
65
63
0.969
![](https://cdn.adscientificindex.com/logos/11375.jpg)
Probability Limit Theory of Dependent Variables
Nonparametric and Semiparametric models
Nonlinear Statistical Models
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,563,103
![Sierra Leone](/flags/sl.png)
65
![](https://cdn.adscientificindex.com/logos/6383.jpg)
31
Maurice Sesay
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
62
10
0.161
![](https://cdn.adscientificindex.com/logos/6383.jpg)
Smart Antenna Design
Photonic Crystal Structure and Optical Devices
Microcontroller applications
Broadband Technologies
Telecommunications Traffic Analysis.
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,566,787
![Sierra Leone](/flags/sl.png)
66
![](https://cdn.adscientificindex.com/logos/6383.jpg)
32
Sheku Kanteh
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
61
44
0.721
![](https://cdn.adscientificindex.com/logos/6383.jpg)
Entomology
Weed Science
Organic agriculture
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,578,147
![Sierra Leone](/flags/sl.png)
67
![](https://cdn.adscientificindex.com/logos/6383.jpg)
33
Mr. Sheku Kenway Moiforay
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
59
32
0.542
![](https://cdn.adscientificindex.com/logos/6383.jpg)
Ruminant Nutrition and Production
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,588,250
![Sierra Leone](/flags/sl.png)
68
![](https://cdn.adscientificindex.com/logos/11375.jpg)
18
Michael A. Conteh
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
57
42
0.737
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,593,873
![Sierra Leone](/flags/sl.png)
69
![](https://cdn.adscientificindex.com/logos/6383.jpg)
34
Brima Gegbe
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
56
41
0.732
![](https://cdn.adscientificindex.com/logos/6383.jpg)
Statistics
Mathematical Modeling
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,603,825
![Sierra Leone](/flags/sl.png)
70
![](https://cdn.adscientificindex.com/logos/6383.jpg)
35
Mohamed Exton Zoker
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
54
51
0.944
![](https://cdn.adscientificindex.com/logos/6383.jpg)
Biodiversity and Conservation
Laboratory Research
Epidemiology
General Biology
Public Health
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,615,724
![Sierra Leone](/flags/sl.png)
71
![](https://cdn.adscientificindex.com/logos/6383.jpg)
36
Daniel Kaitibi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52
47
0.904
![](https://cdn.adscientificindex.com/logos/6383.jpg)
Health Information
Information Technology
Telecommunications
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,617,084
![Sierra Leone](/flags/sl.png)
72
![](https://cdn.adscientificindex.com/logos/6383.jpg)
37
Umaru Mohamed Gassama
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52
36
0.692
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,630,891
![Sierra Leone](/flags/sl.png)
73
![](https://cdn.adscientificindex.com/logos/5744.png)
1
Abdul Joseph Fofanah
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49
49
1.000
![](https://cdn.adscientificindex.com/logos/5744.png)
machine learning
deep learning
artificial intelligence
image processing
health systems
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,645,071
![Sierra Leone](/flags/sl.png)
74
![](https://cdn.adscientificindex.com/logos/6383.jpg)
38
Mohamed Matthew Blango
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
47
46
0.979
![](https://cdn.adscientificindex.com/logos/6383.jpg)
Agricultural Engineering
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,667,860
![Sierra Leone](/flags/sl.png)
75
![](https://cdn.adscientificindex.com/logos/11375.jpg)
19
Olutola Fagbolu
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44
29
0.659
![](https://cdn.adscientificindex.com/logos/11375.jpg)
Natural Language Processing
Quantum Computation
Human Computer Interaction
Software Development & Security