Citation Rankings
Highly Cited Researchers
Business & Management / Decision Science and Operations Management Highly Cited Researchers 92 Scientists Citation in South Africa Rankings - 2025
The Citation Rankings (Highly Cited Researchers) list 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
operational research
decision analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,328
3,648
0.255
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Adolescence
Adolescent Health
Decision-making
Emerging adulthood
Social determinants of health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,663
2,102
0.789
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Optimization
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,312
282
0.122
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Robotics
Artificial Intelligence
Machine Learning
Decision Making
Reinforcement Learning
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,045
1,518
0.742
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Information Security
Decision Support Systems
Operations Research
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,843
856
0.464
* Total Citation Counts Rankings
Ranking Based On Selection: 6
consumer behaviour
complex decision-making
service quality
consumer involvement
consumer/ customerr satisfaction
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,391
556
0.400
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Decision Sciences
Statistics
Econometrics
Mathematical Finance
Energy Forecasting
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,005
665
0.662
* Total Citation Counts Rankings
Ranking Based On Selection: 8
systems thinking
decision-making
ICT4D
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
812
538
0.663
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Special Functions and Orthogonal polynomials
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
710
343
0.483
360° Institutional Performance & Benchmarking Click Here for Live Demo
Gain data-driven strategic insights into your institution’s academic performance, global positioning, and competitive strengths through advanced analysis and benchmarking
with 20 similarly ranked institutions at City, Country, Region, and Global levels.
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Operational Research
Multi-Criteria Decision Analysis
Decision Modelling
Gambling Research
Environmental and Resource Manage
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
631
114
0.181
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Mathematical modelling / Computing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
617
467
0.757
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
535
106
0.198
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Operations Research
Analytics
Supply Chain Management
Logistics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
481
215
0.447
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Supply chain performance
supply chain resilience
supply chain agility and warehousing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
474
355
0.749
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Logistics outsourcing
supply chain management
mixed methods
structural equation modelling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
453
416
0.918
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Computational Complexity
Fractal geometry
Ramsey theory
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
447
102
0.228
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Maritime
Shipping
Logistics
Supply Chain
Value Chain
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
386
340
0.881
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Supply Chain Risk Management
Project Management
SMEs
Systems Engineering Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
354
207
0.585
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Supply Chain Planning
Macro-logistics
Sustainable Freight Transport
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
334
255
0.763
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Project Management
Manufacturing Systems
Operations Management
Business Process Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
322
150
0.466
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Logistics and supply chain management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
305
267
0.875
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Supply chain optimisation
Operations research
Simulation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
273
149
0.546
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Logistics and Supply Chain Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
261
223
0.854
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Supply chain management
performance measures
sustainable supply chain
entrepreneurship
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
257
187
0.728
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Operations Research
Mathematical Programming
Metaheuristics
DC optimization
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
232
107
0.461
* Total Citation Counts Rankings
Rankings
64,942
222
44
Ranking Based On Selection: 1
Theodor Stewart
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,328
3,648
0.255
operational research
decision analysis
* Total Citation Counts Rankings
Rankings
361,822
1,648
334
Ranking Based On Selection: 2
Eugene Lee Davids
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,663
2,102
0.789
Adolescence
Adolescent Health
Decision-making
Emerging adulthood
Social determinants of health
* Total Citation Counts Rankings
Rankings
403,147
1,880
51
Ranking Based On Selection: 3
MK Luhandjula
University of South Africa
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,312
282
0.122
* Total Citation Counts Rankings
Rankings
441,035
2,091
227
Ranking Based On Selection: 4
Benjamin Rosman
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,045
1,518
0.742
Robotics
Artificial Intelligence
Machine Learning
Decision Making
Reinforcement Learning
* Total Citation Counts Rankings
Rankings
474,372
2,262
106
Ranking Based On Selection: 5
Hennie Kruger
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,843
856
0.464
Information Security
Decision Support Systems
Operations Research
* Total Citation Counts Rankings
Rankings
569,641
2,820
275
Ranking Based On Selection: 6
Aletta C Erasmus
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,391
556
0.400
consumer behaviour
complex decision-making
service quality
consumer involvement
consumer/ customerr satisfaction
* Total Citation Counts Rankings
Rankings
685,160
3,492
90
Ranking Based On Selection: 7
Delson Chikobvu
University of the Free State
Bloemfontein, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,005
665
0.662
Decision Sciences
Statistics
Econometrics
Mathematical Finance
Energy Forecasting
* Total Citation Counts Rankings
Rankings
761,212
3,957
404
Ranking Based On Selection: 8
Marita Turpin
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
812
538
0.663
systems thinking
decision-making
ICT4D
* Total Citation Counts Rankings
Rankings
807,581
4,240
431
Ranking Based On Selection: 9
Kerstin Jordaan
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
710
343
0.483
Special Functions and Orthogonal polynomials
* Total Citation Counts Rankings
Rankings
847,430
4,498
693
Ranking Based On Selection: 10
Leanne Scott
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
631
114
0.181
Operational Research
Multi-Criteria Decision Analysis
Decision Modelling
Gambling Research
Environmental and Resource Manage
360° Institutional Performance & Benchmarking Click Here for Live Demo
Gain data-driven strategic insights into your institution’s academic performance, global positioning, and competitive strengths through advanced analysis and benchmarking
with 20 similarly ranked institutions at City, Country, Region, and Global levels.
* Total Citation Counts Rankings
Rankings
854,324
4,546
190
Ranking Based On Selection: 11
Petrus H Potgieter
University of South Africa
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
617
467
0.757
Mathematical modelling / Computing
* Total Citation Counts Rankings
Rankings
902,922
4,859
214
Ranking Based On Selection: 12
Ilsa Basson
University of South Africa
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
535
106
0.198
* Total Citation Counts Rankings
Rankings
945,961
5,173
368
Ranking Based On Selection: 13
Hans Ittmann
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
481
215
0.447
Operations Research
Analytics
Supply Chain Management
Logistics
* Total Citation Counts Rankings
Rankings
951,758
5,228
144
Ranking Based On Selection: 14
Welby V Loury Okoumba
University of the Free State
Bloemfontein, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
474
355
0.749
Supply chain performance
supply chain resilience
supply chain agility and warehousing
* Total Citation Counts Rankings
Rankings
969,918
5,390
391
Ranking Based On Selection: 15
Joash Mageto
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
453
416
0.918
Logistics outsourcing
supply chain management
mixed methods
structural equation modelling
* Total Citation Counts Rankings
Rankings
976,126
5,448
271
Ranking Based On Selection: 16
Willem Fouche
University of South Africa
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
447
102
0.228
Computational Complexity
Fractal geometry
Ramsey theory
* Total Citation Counts Rankings
Rankings
1,035,104
5,937
137
Ranking Based On Selection: 17
Simone Smith-Godfrey
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
386
340
0.881
Maritime
Shipping
Logistics
Supply Chain
Value Chain
* Total Citation Counts Rankings
Rankings
1,070,336
6,222
609
Ranking Based On Selection: 18
Bernadette Sunjka
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
354
207
0.585
Supply Chain Risk Management
Project Management
SMEs
Systems Engineering Management
* Total Citation Counts Rankings
Rankings
1,093,736
6,441
731
Ranking Based On Selection: 19
Joubert Van Eeden
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
334
255
0.763
Supply Chain Planning
Macro-logistics
Sustainable Freight Transport
* Total Citation Counts Rankings
Rankings
1,109,372
6,580
105
Ranking Based On Selection: 20
Stanley Fore
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
322
150
0.466
Project Management
Manufacturing Systems
Operations Management
Business Process Management
* Total Citation Counts Rankings
Rankings
1,131,216
6,765
524
Ranking Based On Selection: 21
Peter Kilbourn
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
305
267
0.875
Logistics and supply chain management
* Total Citation Counts Rankings
Rankings
1,178,759
7,161
682
Ranking Based On Selection: 22
Wilna L Bean
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
273
149
0.546
Supply chain optimisation
Operations research
Simulation
* Total Citation Counts Rankings
Rankings
1,197,487
7,332
17
Ranking Based On Selection: 23
Osayuwamen Omoruyi
Sol Plaatje University
Kimberley, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
261
223
0.854
Logistics and Supply Chain Management
* Total Citation Counts Rankings
Rankings
1,204,253
7,395
962
Ranking Based On Selection: 24
Mamorena Lucia Matsoso
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
257
187
0.728
Supply chain management
performance measures
sustainable supply chain
entrepreneurship
* Total Citation Counts Rankings
Rankings
1,248,735
7,794
833
Ranking Based On Selection: 25
Stephan E Visagie
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
232
107
0.461
Operations Research
Mathematical Programming
Metaheuristics
DC optimization