World's Best Scientists 2026 revealed!

D-Index & Metrics

Mathematics

D-Index
40
Citations
8843
World Ranking
2012
National Ranking
26

Engineering and Technology

D-Index
43
Citations
9146
World Ranking
6055
National Ranking
117

Ger Koole publication distribution in Mathematics in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Mathematics in 2026. The highlighted bar marks where Ger Koole sits on this spectrum.

42–46 publications: 3 scientists 47–51 publications: 5 scientists 52–56 publications: 7 scientists 57–61 publications: 20 scientists 62–66 publications: 14 scientists 67–71 publications: 25 scientists 72–76 publications: 19 scientists 77–81 publications: 35 scientists 82–86 publications: 50 scientists 87–91 publications: 60 scientists 92–96 publications: 86 scientists 97–101 publications: 84 scientists 102–106 publications: 83 scientists 107–111 publications: 90 scientists 112–116 publications: 99 scientists 117–121 publications: 90 scientists 122–126 publications: 91 scientists 127–131 publications: 109 scientists 132–136 publications: 110 scientists 137–141 publications: 98 scientists 142–146 publications: 112 scientists 147–151 publications: 102 scientists 152–156 publications: 88 scientists 157–161 publications: 106 scientists 162–166 publications: 82 scientists 167–171 publications: 102 scientists 172–176 publications: 77 scientists 177–181 publications: 81 scientists 182–186 publications: 78 scientists 187–191 publications: 71 scientists 192–196 publications: 92 scientists 197–201 publications: 64 scientists 202–206 publications: 69 scientists 207–211 publications: 64 scientists 212–216 publications: 62 scientists 217–221 publications: 58 scientists 222–226 publications: 53 scientists 227–231 publications: 50 scientists 232–236 publications: 46 scientists 237–241 publications: 46 scientists 242–246 publications: 46 scientists 247–251 publications: 43 scientists 252–256 publications: 29 scientists 257–261 publications: 45 scientists 262–266 publications: 30 scientists 267–271 publications: 33 scientists 272–276 publications: 34 scientists 277–281 publications: 30 scientists 282–286 publications: 31 scientists 287–291 publications: 21 scientists 292–296 publications: 34 scientists 297–301 publications: 26 scientists 302–306 publications: 10 scientists 307–311 publications: 17 scientists 312–316 publications: 23 scientists 317–321 publications: 13 scientists 322–326 publications: 16 scientists 327–331 publications: 26 scientists 332–336 publications: 13 scientists 337–341 publications: 13 scientists 342–346 publications: 16 scientists 347–351 publications: 17 scientists 352–356 publications: 12 scientists 357–361 publications: 18 scientists 362–366 publications: 18 scientists 367–371 publications: 9 scientists 372–376 publications: 11 scientists 377–381 publications: 8 scientists 382–386 publications: 8 scientists 387–391 publications: 9 scientists 392–396 publications: 9 scientists 397–401 publications: 8 scientists 402–406 publications: 11 scientists 407–411 publications: 6 scientists 412–416 publications: 6 scientists 417–421 publications: 9 scientists 422–426 publications: 8 scientists 427–431 publications: 5 scientists 432–436 publications: 8 scientists 437–441 publications: 8 scientists 442–446 publications: 4 scientists 447–451 publications: 4 scientists 452–456 publications: 4 scientists 457–461 publications: 2 scientists 462–466 publications: 2 scientists 467–471 publications: 4 scientists 472–476 publications: 3 scientists 477–481 publications: 3 scientists 482–486 publications: 6 scientists 487–491 publications: 3 scientists 492–496 publications: 5 scientists 497–501 publications: 5 scientists 502–506 publications: 1 scientists 507–511 publications: 6 scientists 512–516 publications: 4 scientists 517–521 publications: 1 scientists 522–526 publications: 3 scientists 527–531 publications: 1 scientists 532–536 publications: 4 scientists 537+ publications: 100 scientists
42 publications 537+

This scientist: 141 publications — 33rd percentile

33% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 537 publications or more.

Ger Koole D-index placement in Mathematics in 2026

The chart shows the D-index (discipline H-index) distribution of Mathematics scientists ranked by Research.com in 2026. The highlighted bar marks where Ger Koole sits on this spectrum.

30 D-Index: 174 scientists 31 D-Index: 151 scientists 32 D-Index: 174 scientists 33 D-Index: 117 scientists 34 D-Index: 136 scientists 35 D-Index: 127 scientists 36 D-Index: 145 scientists 37 D-Index: 153 scientists 38 D-Index: 150 scientists 39 D-Index: 150 scientists 40 D-Index: 137 scientists 41 D-Index: 136 scientists 42 D-Index: 93 scientists 43 D-Index: 108 scientists 44 D-Index: 115 scientists 45 D-Index: 112 scientists 46 D-Index: 103 scientists 47 D-Index: 75 scientists 48 D-Index: 59 scientists 49 D-Index: 67 scientists 50 D-Index: 60 scientists 51 D-Index: 57 scientists 52 D-Index: 59 scientists 53 D-Index: 62 scientists 54 D-Index: 60 scientists 55 D-Index: 50 scientists 56 D-Index: 42 scientists 57 D-Index: 54 scientists 58 D-Index: 50 scientists 59 D-Index: 42 scientists 60 D-Index: 41 scientists 61 D-Index: 35 scientists 62 D-Index: 40 scientists 63 D-Index: 21 scientists 64 D-Index: 31 scientists 65 D-Index: 27 scientists 66 D-Index: 29 scientists 67 D-Index: 19 scientists 68 D-Index: 25 scientists 69 D-Index: 17 scientists 70 D-Index: 18 scientists 71 D-Index: 12 scientists 72 D-Index: 14 scientists 73 D-Index: 13 scientists 74 D-Index: 18 scientists 75 D-Index: 9 scientists 76 D-Index: 11 scientists 77 D-Index: 10 scientists 78 D-Index: 9 scientists 79 D-Index: 16 scientists 80 D-Index: 12 scientists 81 D-Index: 10 scientists 82 D-Index: 5 scientists 83 D-Index: 5 scientists 84 D-Index: 13 scientists 85 D-Index: 6 scientists 86+ D-Index: 99 scientists
30 D-Index 86+

This scientist: 40 D-Index — 45th percentile

45% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 86 D-Index or more.

Overview

What is he best known for?

The fields of study he is best known for:

  • Statistics
  • Computer network
  • Artificial intelligence

His scientific interests lie mostly in Queueing theory, Mathematical optimization, Computer network, Dynamic programming and Distributed computing. His Queueing theory research incorporates themes from Dimensioning, Markov chain, Operations management and Operations research. Ger Koole interconnects Appointment scheduling and Local search, Local search procedure in the investigation of issues within Operations research.

The Mathematical optimization study combines topics in areas such as Real-time computing, Dynamic priority scheduling, Fair-share scheduling, Queue and Server. His Optimized Link State Routing Protocol, Mobility model and Mobile ad hoc network study in the realm of Computer network connects with subjects such as Relay. His research integrates issues of Node, Shared resource and Bellman equation in his study of Dynamic programming.

His most cited work include:

  • Commissioned Paper: Telephone Call Centers: Tutorial, Review, and Research Prospects (1096 citations)
  • The message delay in mobile ad hoc networks (577 citations)
  • Queueing models of call centers: An introduction (283 citations)

What are the main themes of his work throughout his whole career to date?

Ger Koole mainly investigates Mathematical optimization, Operations research, Queueing theory, Queue and Dynamic programming. His studies deal with areas such as Stochastic process, Real-time computing, Markov process and Job shop scheduling as well as Mathematical optimization. Ger Koole has researched Operations research in several fields, including Revenue management, Staffing, Scheduling and Reservation.

His work carried out in the field of Queueing theory brings together such families of science as Server and Markov chain. Queue is a subfield of Computer network that Ger Koole explores. His work carried out in the field of Dynamic programming brings together such families of science as Shared resource, Stochastic control and Bellman equation.

He most often published in these fields:

  • Mathematical optimization (30.72%)
  • Operations research (22.88%)
  • Queueing theory (22.22%)

What were the highlights of his more recent work (between 2014-2021)?

  • Operations research (22.88%)
  • Scheduling (12.42%)
  • Revenue (5.23%)

In recent papers he was focusing on the following fields of study:

The scientist’s investigation covers issues in Operations research, Scheduling, Revenue, Staffing and Revenue management. His work deals with themes such as Reservation, Markov decision process, Real-time computing, Queue and Call management, which intersect with Operations research. Markov decision process is often connected to Mathematical optimization in his work.

In his study, Total cost, Service system, Poisson process and Contact center is strongly linked to Multi channel, which falls under the umbrella field of Scheduling. His research integrates issues of Cover, Estimation and Operations management in his study of Staffing. As part of his studies on Service, Ger Koole often connects relevant subjects like Queueing theory.

Between 2014 and 2021, his most popular works were:

  • Costs and effects of Internet cognitive behavioral treatment blended with face-to-face treatment: Results from a naturalistic study (57 citations)
  • Revenue management under customer choice behaviour with cancellations and overbooking (29 citations)
  • Simulation-based optimization of staffing levels in an emergency department (22 citations)

In his most recent research, the most cited papers focused on:

  • Statistics
  • Computer network
  • Algorithm

Ger Koole spends much of his time researching Operations research, Markov decision process, Reservation, Dynamic programming and Mathematical optimization. His studies deal with areas such as Key, Resource allocation and Flexibility as well as Operations research. The concepts of his Reservation study are interwoven with issues in Economies of scale, Control, Real-time computing, Scheduling and Call management.

The Scheduling study combines topics in areas such as Call control, Multi channel, Callback, Poisson process and Service system. Ger Koole interconnects Queueing theory, Layered queueing network, Markov process and Curse of dimensionality in the investigation of issues within Dynamic programming. His research in Mathematical optimization is mostly focused on Heuristics.

Best Publications

  • Commissioned Paper: Telephone Call Centers: Tutorial, Review, and Research Prospects

    Noah Gans;Ger Koole;Avishai Mandelbaum

  • The message delay in mobile ad hoc networks

    Robin Groenevelt;Philippe Nain;Ger Koole

  • Queueing models of call centers: An introduction

    Ger Koole;Avishai Mandelbaum

  • Optimal outpatient appointment scheduling

    Guido C. Kaandorp;Ger Koole

  • Marked point processes as limits of Markovian arrival streams

    Søren Asmussen;Ger Koole

  • Managing uncertainty in call centres using Poisson mixtures

    Geurt Jongbloed;Ger Koole

  • Modeling the emergency cardiac in-patient flow: an application of queuing theory.

    Arnoud M. de Bruin;A. C. van Rossum;M. C. Visser;G. M. Koole

  • Dimensioning hospital wards using the Erlang loss model

    A. M. de Bruin;A. M. de Bruin;R. Bekker;L. van Zanten;G. M. Koole

  • Structural results for the control of queueing systems using event-based dynamic programming

    Ger Koole

  • On optimal call admission control in resource-sharing system

    E. Altman;T. Jimenez;G. Koole

  • Sample-Path Analysis of Queueing Systems

    G.M. Koole;M. El-Taha;S. Stidham

  • A queueing model for call blending in call centers

    S. Bhulai;G. Koole

  • Simple Methods for Shift Scheduling in Multiskill Call Centers

    Sandjai Bhulai;Ger Koole;Auke Pot

  • Performance analysis and optimization in customer contact centers

    G. Koole

  • Monotonicity in Markov Reward and Decision Chains: Theory and Applications

    Ger Koole

  • Message delay in MANET

    Robin Groenevelt;Philippe Nain;Ger Koole

  • Costs and effects of Internet cognitive behavioral treatment blended with face-to-face treatment: Results from a naturalistic study

    Robin M.F. Kenter;Peter M. van de Ven;Pim Cuijpers;Ger Koole

  • On the Optimality of the Generalized Shortest Queue Policy

    Arie Hordijk;Ger Koole

  • Resource allocation in grid computing

    Ger Koole;Rhonda Righter

  • Queueing-theoretic solution methods for models of parallel and distributed systems

    O.J. Boxma;G.M. Koole;Zhen Liu

  • Managing uncertainty in call centers using Poisson mixtures.

    G. Jongbloed;G.M. Koole

Frequent Co-Authors

Eitan Altman
Eitan Altman French Institute for Research in Computer Science and Automation - INRIA
Philippe Nain
Philippe Nain French Institute for Research in Computer Science and Automation - INRIA
Arie Hordijk
Arie Hordijk Leiden University
Pierre L'Ecuyer
Pierre L'Ecuyer University of Montreal
Yves Dallery
Yves Dallery CentraleSupélec
Marcel G. W. Dijkgraaf
Marcel G. W. Dijkgraaf University of Amsterdam
Bert Zwart
Bert Zwart Eindhoven University of Technology
Don Towsley
Don Towsley University of Massachusetts Amherst
Avishai Mandelbaum
Avishai Mandelbaum Technion – Israel Institute of Technology
Vivek S. Borkar
Vivek S. Borkar Indian Institute of Technology Bombay

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

For students studying Mathematics in the USA, exploring related online degrees can open diverse career opportunities. For instance, pursuing a master of finance online can be an excellent choice for those interested in quantitative finance, risk analysis, and financial modeling.

Many professionals also gravitate toward business leadership roles through accelerated programs. The accelerated online mba programs offer a fast-paced way to develop management skills while applying mathematical expertise in strategic decision-making.

Marketing is another promising field where mathematics and analytics play a critical role. Earning a masters degree in marketing can provide in-depth knowledge of consumer behavior analytics, digital marketing strategies, and market research techniques.

For those seeking both affordability and efficiency, researching cheapest 1 year online mba programs is valuable. These programs offer quality education with minimal time commitment, ideal for bridging math skills with business acumen.

Best Scientists Citing Ger Koole

Trending Scientists

Recently Published Articles