Citation Rankings
Highly Cited Researchers
University of Sierra Leone Highly Cited Researchers Citation Rankings 2025
The Citation Rankings (Highly Cited Researchers) highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.
* Total Citation Counts Rankings
Ranking Based On Selection :1
Health policy and practice
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,445
2,131
0.872
* Total Citation Counts Rankings
Ranking Based On Selection :2
Infectious Diseases
Public Health and Internal Medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,736
1,707
0.983
* Total Citation Counts Rankings
Ranking Based On Selection :3
Cardiology
Internal Medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,707
1,146
0.671
* Total Citation Counts Rankings
Ranking Based On Selection :4
Renewable energy technologies
greenhouse gas mitigation
solid waste management and utilization
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,527
476
0.312
* Total Citation Counts Rankings
Ranking Based On Selection :5
Pathology
Medicine
Physiology
Hepatogastroenterology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,090
918
0.842
* Total Citation Counts Rankings
Ranking Based On Selection :6
heavy metals
wastewater
grey water
solid waste management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
529
266
0.503
* Total Citation Counts Rankings
Ranking Based On Selection :7
Institutional and Educational Research
Environmental Management
Taxonomy and Biosystematics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
560
534
0.954
* Total Citation Counts Rankings
Ranking Based On Selection :8
Environmental Science and Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
501
326
0.651
* Total Citation Counts Rankings
Ranking Based On Selection :9
Geospatial Science & Environmental Geography
Computational Geography
Spatial Analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
462
288
0.623
* Total Citation Counts Rankings
Ranking Based On Selection :10
Women/Gender Sudies
peace and conflict
literature
development Studies
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
316
184
0.582
* Total Citation Counts Rankings
Ranking Based On Selection :11
Clinical Trials
Pharmacy
Pharmacology
Pharmacoepidemiology
Pharmacovigilance
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
236
225
0.953
* Total Citation Counts Rankings
Ranking Based On Selection :12
Paediatrics and Paeditric Neurology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
232
141
0.608
* Total Citation Counts Rankings
Ranking Based On Selection :13
Aquatic Resource Economics
Blue Economy and Ocean Governance
Education Administration
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
219
144
0.658
* Total Citation Counts Rankings
Ranking Based On Selection :14
Research and programs
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
212
209
0.986
* Total Citation Counts Rankings
Ranking Based On Selection :15
Clinical research
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
149
134
0.899
* Total Citation Counts Rankings
Ranking Based On Selection :16
Development Geography
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
150
79
0.527
* Total Citation Counts Rankings
Ranking Based On Selection :17
Deep Learning
AI
Data Mining
Machine Learning
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
120
114
0.950
* Total Citation Counts Rankings
Ranking Based On Selection :18
Wave Hydrodynamics
Harbour Engineering
Coastal Zone Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
102
99
0.971
* Total Citation Counts Rankings
Ranking Based On Selection :19
Climate Change
Development Studies
Ecotoxicology
Environmental Remediation
Wastewater treatment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
85
84
0.988
* Total Citation Counts Rankings
Ranking Based On Selection :20
Probability Limit Theory of Dependent Variables
Nonparametric and Semiparametric models
Nonlinear Statistical Models
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
70
68
0.971
* Total Citation Counts Rankings
Ranking Based On Selection :21
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
59
45
0.763
* Total Citation Counts Rankings
Ranking Based On Selection :22
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
Ranking Based On Selection :23
Geology
Environmental Sciences
Engineering Behaviour of Soil
GIS
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32
32
1.000
* Total Citation Counts Rankings
Ranking Based On Selection :24
Marine Sciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30
30
1.000
* Total Citation Counts Rankings
Ranking Based On Selection :25
Applied and Pure Mathematics
Applied and Theoretical Statistic
Mathematical Epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25
25
1.000
* Total Citation Counts Rankings
Rankings
381,437
6
1
Ranking Based On Selection: 1
Haja Ramatulai Wurie
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,445
2,131
0.872
Health policy and practice
* Total Citation Counts Rankings
Rankings
489,784
9
2
Ranking Based On Selection: 2
Sulaiman Lakoh
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,736
1,707
0.983
Infectious Diseases
Public Health and Internal Medicine
* Total Citation Counts Rankings
Rankings
490,652
10
3
Ranking Based On Selection: 3
James Baligeh Walter Russell
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,707
1,146
0.671
* Total Citation Counts Rankings
Rankings
529,827
12
4
Ranking Based On Selection: 4
Kelleh Gbawuru Mansaray
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,527
476
0.312
Renewable energy technologies
greenhouse gas mitigation
solid waste management and utilization
* Total Citation Counts Rankings
Rankings
651,833
14
5
Ranking Based On Selection: 5
Babatunde Duduyemi
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,090
918
0.842
Pathology
Medicine
Physiology
Hepatogastroenterology
* Total Citation Counts Rankings
Rankings
895,528
21
6
Ranking Based On Selection: 6
Ronnie Frazer-Williams
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
529
266
0.503
* Total Citation Counts Rankings
Rankings
904,095
22
7
Ranking Based On Selection: 7
Adepoju Adeyinka Olufemi|Adeyinka O. ADEPOJU, Adeyinka ADEPOJU, ADEPOJU, Adeyinka Olufemi
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
560
534
0.954
Institutional and Educational Research
Environmental Management
Taxonomy and Biosystematics
* Total Citation Counts Rankings
Rankings
917,401
25
8
Ranking Based On Selection: 8
Edward Hinga Sandy
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
501
326
0.651
Environmental Science and Engineering
* Total Citation Counts Rankings
Rankings
949,788
27
9
Ranking Based On Selection: 9
Solomon Peter Gbanie
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
462
288
0.623
Geospatial Science & Environmental Geography
Computational Geography
Spatial Analysis
* Total Citation Counts Rankings
Rankings
1,104,528
31
10
Ranking Based On Selection: 10
Aisha Fofana Ibrahim
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
316
184
0.582
Women/Gender Sudies
peace and conflict
literature
development Studies
* Total Citation Counts Rankings
Rankings
1,218,974
37
11
Ranking Based On Selection: 11
Onome Abiri
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
236
225
0.953
Clinical Trials
Pharmacy
Pharmacology
Pharmacoepidemiology
Pharmacovigilance
* Total Citation Counts Rankings
Rankings
1,228,729
38
12
Ranking Based On Selection: 12
Alhaji Alusine Jalloh
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
232
141
0.608
Paediatrics and Paeditric Neurology
* Total Citation Counts Rankings
Rankings
1,250,879
40
13
Ranking Based On Selection: 13
Andrew Baio
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
219
144
0.658
Aquatic Resource Economics
Blue Economy and Ocean Governance
Education Administration
* Total Citation Counts Rankings
Rankings
1,263,498
42
14
Ranking Based On Selection: 14
Samuel Saidu
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
212
209
0.986
* Total Citation Counts Rankings
Rankings
1,412,860
48
15
Ranking Based On Selection: 15
Muketorma Bawoh
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
149
134
0.899
* Total Citation Counts Rankings
Rankings
1,416,856
49
16
Ranking Based On Selection: 16
Kabba Santigie Bangura
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
150
79
0.527
* Total Citation Counts Rankings
Rankings
1,503,012
56
17
Ranking Based On Selection: 17
Amadu Fullah Kamara
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
120
114
0.950
Deep Learning
AI
Data Mining
Machine Learning
* Total Citation Counts Rankings
Rankings
1,587,830
60
18
Ranking Based On Selection: 18
Obai Kargbo
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
102
99
0.971
Wave Hydrodynamics
Harbour Engineering
Coastal Zone Management
* Total Citation Counts Rankings
Rankings
1,638,633
62
1
Ranking Based On Selection: 19
Edward Hingha Foday Jr
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
85
84
0.988
Climate Change
Development Studies
Ecotoxicology
Environmental Remediation
Wastewater treatment
* Total Citation Counts Rankings
Rankings
1,709,919
64
19
Ranking Based On Selection: 20
Sallieu Kabay Samura
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
70
68
0.971
Probability Limit Theory of Dependent Variables
Nonparametric and Semiparametric models
Nonlinear Statistical Models
* Total Citation Counts Rankings
Rankings
1,770,093
69
20
Ranking Based On Selection: 21
Michael A. Conteh
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
59
45
0.763
* Total Citation Counts Rankings
Rankings
1,863,428
79
21
Ranking Based On Selection: 22
Olutola Fagbolu
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44
29
0.659
Natural Language Processing
Quantum Computation
Human Computer Interaction
Software Development & Security
* Total Citation Counts Rankings
Rankings
1,947,927
83
22
Ranking Based On Selection: 23
Tamba Komba
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32
32
1.000
Geology
Environmental Sciences
Engineering Behaviour of Soil
GIS
* Total Citation Counts Rankings
Rankings
1,967,647
85
23
Ranking Based On Selection: 24
Komba Jossie Konoyima
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30
30
1.000
* Total Citation Counts Rankings
Rankings
2,010,852
88
24
Ranking Based On Selection: 25
Abdul Alimamy Kamara
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25
25
1.000
Applied and Pure Mathematics
Applied and Theoretical Statistic
Mathematical Epidemiology