Citation Rankings
Highly Cited Researchers
Africa Engineering & Technology 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
astronomy and astrophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
56,187
22,316
0.397
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Climate Change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,858
18,251
0.398
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Pulsars
gamma-ray astronomy
globular clusters
cosmic rays
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
40,678
15,150
0.372
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Artificial Intelligence
swarm optimization
Green Science
Metaverses
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
37,853
30,049
0.794
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Astrophysics
cosmology
radio astronomy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
36,739
30,310
0.825
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Swarm Intelligence
Evolutionary Computation
Neural Networks
Optimization
Data Analytics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,120
11,137
0.347
* Total Citation Counts Rankings
Ranking Based On Selection: 7
astronomy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,986
25,897
0.864
* Total Citation Counts Rankings
Ranking Based On Selection: 8
isotope geochemistry
geochronology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,467
8,182
0.278
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Pattern Recognition
Biometrics
Quantum Biology
Machine Learning
Cryptography
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,167
11,656
0.414
* Total Citation Counts Rankings
Ranking Based On Selection: 10
• Renewable Energy Systems. • Desiccant Dehumidification Systems. • Refrigeration and Air
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,072
24,750
0.882
* Total Citation Counts Rankings
Ranking Based On Selection: 11
data mining- Swarm Techniques- Deep Learning
Cloud Computing
Big Data Optimization
Signal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,292
26,790
0.982
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Biopeptides
Proteases
Lipopeptides
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,046
16,978
0.628
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Astrophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,512
11,382
0.464
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,833
11,807
0.495
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Separation and Carbon Capture
Power to X
Hydrogen
Sustainable Process Engineering
Porous materials and adsorption technology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,451
14,230
0.634
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Bioinformatics
statistics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,273
8,726
0.392
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Astronomy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,609
12,154
0.562
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Economic Geology
Mineral Prospectivity Mapping
Exploration Geochemistry
Geological Remote Sensing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,910
12,681
0.606
* Total Citation Counts Rankings
Ranking Based On Selection: 19
mobile wireless networks
mobile and ubiquitous computing
localization
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,383
7,598
0.373
* Total Citation Counts Rankings
Ranking Based On Selection: 20
materials science
nanotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,070
9,265
0.486
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Economic Geology
Iron and manganese deposits
Precambrian geology
Sedimentology and basin analyses.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,873
7,016
0.372
* Total Citation Counts Rankings
Ranking Based On Selection: 22
manufacturing processes
CNC technology
machining technology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,785
13,299
0.708
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Wastewater Technology
Algal Biotechnology
Biofuels
Bioremediation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,344
12,587
0.686
* Total Citation Counts Rankings
Ranking Based On Selection: 24
photovoltaics
nanomaterials
nanophotonics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,086
6,028
0.333
* Total Citation Counts Rankings
Ranking Based On Selection: 25
enviornmental science
enviornmental biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,882
9,458
0.529
* Total Citation Counts Rankings
Rankings
8,292
24
11
Ranking Based On Selection: 1
TH Jarrett
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
56,187
22,316
0.397
astronomy and astrophysics
* Total Citation Counts Rankings
Rankings
11,428
33
14
Ranking Based On Selection: 2
Mark New
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,858
18,251
0.398
* Total Citation Counts Rankings
Rankings
13,887
42
1
Ranking Based On Selection: 3
Christo Venter
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
40,678
15,150
0.372
Pulsars
gamma-ray astronomy
globular clusters
cosmic rays
* Total Citation Counts Rankings
Rankings
15,569
25
6
Ranking Based On Selection: 4
Aboul Ella Hassanien Ali
Cairo University
Giza, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
37,853
30,049
0.794
Artificial Intelligence
swarm optimization
Green Science
Metaverses
* Total Citation Counts Rankings
Rankings
16,353
47
4
Ranking Based On Selection: 5
Yin-Zhe Ma
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
36,739
30,310
0.825
Astrophysics
cosmology
radio astronomy
* Total Citation Counts Rankings
Rankings
20,139
55
6
Ranking Based On Selection: 6
Andries Engelbrecht
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,120
11,137
0.347
Swarm Intelligence
Evolutionary Computation
Neural Networks
Optimization
Data Analytics
* Total Citation Counts Rankings
Rankings
22,404
63
1
Ranking Based On Selection: 7
Steven Michael Crawford
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,986
25,897
0.864
* Total Citation Counts Rankings
Rankings
23,083
65
4
Ranking Based On Selection: 8
Jan Kramers
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,467
8,182
0.278
isotope geochemistry
geochronology
* Total Citation Counts Rankings
Rankings
24,689
3
1
Ranking Based On Selection: 9
Soltane Mohamed
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,167
11,656
0.414
Pattern Recognition
Biometrics
Quantum Biology
Machine Learning
Cryptography
* Total Citation Counts Rankings
Rankings
24,829
36
1
Ranking Based On Selection: 10
Ae Kabeel
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,072
24,750
0.882
• Renewable Energy Systems. • Desiccant Dehumidification Systems. • Refrigeration and Air
* Total Citation Counts Rankings
Rankings
25,855
37
2
Ranking Based On Selection: 11
Mohamed Abd Elaziz
Zagazig University
Sharqia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,292
26,790
0.982
data mining- Swarm Techniques- Deep Learning
Cloud Computing
Big Data Optimization
Signal
* Total Citation Counts Rankings
Rankings
26,238
2
1
Ranking Based On Selection: 12
Moncef Nasri
Université de Sfax
Sfax, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,046
16,978
0.628
Biopeptides
Proteases
Lipopeptides
* Total Citation Counts Rankings
Rankings
30,417
93
3
Ranking Based On Selection: 13
Markus Boettcher
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,512
11,382
0.464
* Total Citation Counts Rankings
Rankings
31,680
98
2
Ranking Based On Selection: 14
Charlie Shackleton
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,833
11,807
0.495
* Total Citation Counts Rankings
Rankings
34,442
7
1
Ranking Based On Selection: 15
Belmabkhout Youssef
Mohammed VI Polytechnic University
Ben Guerir, Morocco
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,451
14,230
0.634
Separation and Carbon Capture
Power to X
Hydrogen
Sustainable Process Engineering
Porous materials and adsorption technology
* Total Citation Counts Rankings
Rankings
34,822
108
15
Ranking Based On Selection: 16
Gerard Tromp
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,273
8,726
0.392
* Total Citation Counts Rankings
Rankings
36,374
109
2
Ranking Based On Selection: 17
D. Buckley
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,609
12,154
0.562
* Total Citation Counts Rankings
Rankings
38,112
116
10
Ranking Based On Selection: 18
EJM (John) Carranza
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,910
12,681
0.606
Economic Geology
Mineral Prospectivity Mapping
Exploration Geochemistry
Geological Remote Sensing
* Total Citation Counts Rankings
Rankings
39,528
48
6
Ranking Based On Selection: 19
Moustafa Youssef
Alexandria University
Alexandria, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,383
7,598
0.373
mobile wireless networks
mobile and ubiquitous computing
localization
* Total Citation Counts Rankings
Rankings
43,218
52
13
Ranking Based On Selection: 20
Ma Ahmed
Cairo University
Giza, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,070
9,265
0.486
materials science
nanotechnology
* Total Citation Counts Rankings
Rankings
43,820
137
9
Ranking Based On Selection: 21
Nic Beukes
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,873
7,016
0.372
Economic Geology
Iron and manganese deposits
Precambrian geology
Sedimentology and basin analyses.
* Total Citation Counts Rankings
Rankings
44,105
54
3
Ranking Based On Selection: 22
Ahmed Mostafa
Mansoura University
Mansoura, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,785
13,299
0.708
manufacturing processes
CNC technology
machining technology
* Total Citation Counts Rankings
Rankings
45,600
147
1
Ranking Based On Selection: 23
Faizal Bux
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,344
12,587
0.686
Wastewater Technology
Algal Biotechnology
Biofuels
Bioremediation
* Total Citation Counts Rankings
Rankings
46,514
149
3
Ranking Based On Selection: 24
Ruud Schropp
University of the Western Cape
Bellville, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,086
6,028
0.333
photovoltaics
nanomaterials
nanophotonics
* Total Citation Counts Rankings
Rankings
47,268
41
8
Ranking Based On Selection: 25
Mazharuddin Khan
Addis Ababa University
Addis Ababa, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,882
9,458
0.529
enviornmental science
enviornmental biology