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Electronics and Electrical Engineering
Malaysia
2026
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Mathematics
Malaysia
2026

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Mathematics 76 192 159 1 1 857 23552
Electronics and Electrical Engineering 67 1072 1022 4 4 715 18798

Kok Lay Teo publications per year

The chart shows the history of publications by Kok Lay Teo between 1972 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Kok Lay Teo published across 54 years, from 1972 to 2025, averaging 17.6 papers a year. Output peaked at 43 publications in 2005. 38 of the 951 publications appeared in the last two years.

No. of publications
10 20 30 40
Bar chart. Horizontal axis: year, 1972 to 2025. Vertical axis: number of publications, 0 to 43. Peak 43 publications in 2005. 1972: 1 publication 1973: 1 publication 1974: 8 publications 1975: 5 publications 1976: 3 publications 1977: 7 publications 1978: 5 publications 1979: 6 publications 1980: 8 publications 1981: 4 publications 1982: 4 publications 1983: 7 publications 1984: 6 publications 1985: 5 publications 1986: 5 publications 1987: 5 publications 1988: 13 publications 1989: 11 publications 1990: 9 publications 1991: 10 publications 1992: 16 publications 1993: 21 publications 1994: 12 publications 1995: 15 publications 1996: 17 publications 1997: 28 publications 1998: 17 publications 1999: 21 publications 2000: 21 publications 2001: 33 publications 2002: 18 publications 2003: 20 publications 2004: 21 publications 2005: 43 publications 2006: 36 publications 2007: 26 publications 2008: 34 publications 2009: 24 publications 2010: 22 publications 2011: 23 publications 2012: 33 publications 2013: 35 publications 2014: 38 publications 2015: 33 publications 2016: 21 publications 2017: 21 publications 2018: 22 publications 2019: 17 publications 2020: 23 publications 2021: 40 publications 2022: 23 publications 2023: 16 publications 2024: 22 publications 2025: 16 publications
1972 2025

951 publications in total across all disciplines

View publications per year as a table
Kok Lay Teo: publications per year, 1972 to 2025
Year Publications
1972 1
1973 1
1974 8
1975 5
1976 3
1977 7
1978 5
1979 6
1980 8
1981 4
1982 4
1983 7
1984 6
1985 5
1986 5
1987 5
1988 13
1989 11
1990 9
1991 10
1992 16
1993 21
1994 12
1995 15
1996 17
1997 28
1998 17
1999 21
2000 21
2001 33
2002 18
2003 20
2004 21
2005 43
2006 36
2007 26
2008 34
2009 24
2010 22
2011 23
2012 33
2013 35
2014 38
2015 33
2016 21
2017 21
2018 22
2019 17
2020 23
2021 40
2022 23
2023 16
2024 22
2025 16
Total 951
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Kok Lay Teo 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 Kok Lay Teo sits on this spectrum.

No. of scientists
25 50 75 100
Bar chart with 100 bars. Horizontal axis: publications, 42–46 to 537+. Vertical axis: number of scientists, 0 to 112. Most scientists, 112, have 142–146 publications. The last bar groups every scientist with 537 publications or more. The highlighted bar, 537+ publications, is where this scientist sits. 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: 83 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 scientist 507–511 publications: 6 scientists 512–516 publications: 4 scientists 517–521 publications: 1 scientist 522–526 publications: 3 scientists 527–531 publications: 1 scientist 532–536 publications: 4 scientists 537+ publications: 100 scientists
42–46 publications 537+

This scientist: 857 publications — 99th percentile

99% of scientists in this discipline score the same or lower.

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

View publications distribution as a table
Number of Mathematics scientists by publication count, Research.com 2026 ranking edition. Based on 3,584 ranked scientists.
Publications Scientists This scientist
42–46 3
47–51 5
52–56 7
57–61 20
62–66 14
67–71 25
72–76 19
77–81 35
82–86 50
87–91 60
92–96 86
97–101 84
102–106 83
107–111 90
112–116 99
117–121 90
122–126 91
127–131 109
132–136 110
137–141 98
142–146 112
147–151 102
152–156 88
157–161 106
162–166 83
167–171 102
172–176 77
177–181 81
182–186 78
187–191 71
192–196 92
197–201 64
202–206 69
207–211 64
212–216 62
217–221 58
222–226 53
227–231 50
232–236 46
237–241 46
242–246 46
247–251 43
252–256 29
257–261 45
262–266 30
267–271 33
272–276 34
277–281 30
282–286 31
287–291 21
292–296 34
297–301 26
302–306 10
307–311 17
312–316 23
317–321 13
322–326 16
327–331 26
332–336 13
337–341 13
342–346 16
347–351 17
352–356 12
357–361 18
362–366 18
367–371 9
372–376 11
377–381 8
382–386 8
387–391 9
392–396 9
397–401 8
402–406 11
407–411 6
412–416 6
417–421 9
422–426 8
427–431 5
432–436 8
437–441 8
442–446 4
447–451 4
452–456 4
457–461 2
462–466 2
467–471 4
472–476 3
477–481 3
482–486 6
487–491 3
492–496 5
497–501 5
502–506 1
507–511 6
512–516 4
517–521 1
522–526 3
527–531 1
532–536 4
537+ 100 857
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Kok Lay Teo 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 Kok Lay Teo sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 57 bars. Horizontal axis: D-Index, 30 to 86+. Vertical axis: number of scientists, 0 to 174. Most scientists, 174, have 30 D-Index. The last bar groups every scientist with 86 D-Index or more. The highlighted bar, 76 D-Index, is where this scientist sits. 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: 138 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: 76 D-Index — 95th percentile

95% of scientists in this discipline score the same or lower.

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

View D-Index distribution as a table
Number of Mathematics scientists by D-index, Research.com 2026 ranking edition. Based on 3,584 ranked scientists.
D-Index Scientists This scientist
30 174
31 151
32 174
33 117
34 136
35 127
36 145
37 153
38 150
39 150
40 138
41 136
42 93
43 108
44 115
45 112
46 103
47 75
48 59
49 67
50 60
51 57
52 59
53 62
54 60
55 50
56 42
57 54
58 50
59 42
60 41
61 35
62 40
63 21
64 31
65 27
66 29
67 19
68 25
69 17
70 18
71 12
72 14
73 13
74 18
75 9
76 11 76
77 10
78 9
79 16
80 12
81 10
82 5
83 5
84 13
85 6
86+ 99
Download as CSV

Research.com Recognitions

  • 2026 - Research.com Electronics and Electrical Engineering in Malaysia Leader Award
  • 2026 - Research.com Mathematics in Malaysia Leader Award
  • 2025 - Research.com Electronics and Electrical Engineering in Malaysia Leader Award
  • 2025 - Research.com Mathematics in Malaysia Leader Award

Overview

Kok Lay Teo is affiliated with Sunway University in Malaysia and has a research portfolio primarily focused on engineering and computer science. Their work spans across multiple subfields and topics related to system optimization and stability analysis.

Their main fields of study include:

  • Engineering
  • Computer Science

Within these fields, Kok Lay Teo specializes in the following subfields:

  • Control and Systems Engineering
  • Computational Theory and Mathematics
  • Numerical Analysis
  • Management Science and Operations Research
  • Computer Networks and Communications

The primary research topics covered in their work are:

  • Advanced Control Systems Optimization
  • Optimization and Variational Analysis
  • Stability and Control of Uncertain Systems
  • Risk and Portfolio Optimization
  • Advanced Optimization Algorithms Research
  • Fractional Differential Equations Solutions
  • Neural Networks Stability and Synchronization

Kok Lay Teo has published scientific papers in various academic venues, with frequent publications in:

  • Journal of Industrial and Management Optimization
  • Journal of Optimization Theory and Applications
  • Journal of the Franklin Institute
  • Automatica
  • Applied Mathematics and Computation

Selected recent papers authored or co-authored by Kok Lay Teo include:

  • Hierarchical stability conditions for time-varying delay systems via an extended reciprocally convex quadratic inequality, 2020, Journal of the Franklin Institute
  • Monotone-delay-interval-based Lyapunov functionals for stability analysis of systems with a periodically varying delay, 2021, Automatica
  • New insights on stability of sampled-data systems with time-delay, 2020, Applied Mathematics and Computation
  • A Hybrid Offline Optimization Method for Reconfiguration of Multi-UAV Formations, 2020, IEEE Transactions on Aerospace and Electronic Systems
  • Relaxed stability criteria of time-varying delay systems via delay-derivative-dependent slack matrices, 2023, Journal of the Franklin Institute

Kok Lay Teo's frequent co-authors include:

  • Changjun Yu
  • Song Wang
  • Chongyang Liu
  • Volker Rehbock
  • Zhaohua Gong

In addition to journal articles, Kok Lay Teo has contributed to academic books published by Springer International Publishing and Book Publisher International (a part of SCIENCEDOMAIN International). Notable titles include Applied and Computational Optimal Control (2021) and Theory and Practice of Mathematics and Computer Science Vol. 5 (2020).

Best Publications

  • A unified computational approach to optimal control problems

    Kok Lay Teo;C. Goh;K. Wong

  • A Unified Computational Approach to Optimal Control Problems

    K. L. Teo

  • Control parametrization: a unified approach to optimal control problems with general constraints

    C. J. Goh;K. L. Teo

  • A new looped-functional for stability analysis of sampled-data systems

    Hong-Bing Zeng;Kok Lay Teo;Yong He

  • Optimal control of distributed parameter systems

    N. U. Ahmed;K. L. Teo

  • Chromatic Polynomials and Chromaticity of Graphs

    F. M. Dong;Khee Meng Koh;K.L. Teo

  • Guidance Laws with Finite Time Convergence

    Di Zhou;Sheng Sun;Kok Lay Teo

  • THE CONTROL PARAMETERIZATION METHOD FOR NONLINEAR OPTIMAL CONTROL: A SURVEY

    Qun Lin;Ryan Loxton;Kok Lay Teo

  • Optimal Control of Drug Administration in Cancer Chemotherapy

    Rory Martin;K. L. Teo

  • Generalized invexity and generalized invariant monotonicity

    X.M. Yang;X.Q. Yang;K.L. Teo

  • Portfolio Optimization Under a Minimax Rule

    Xiaoqiang Cai;Kok-Lay Teo;Xiaoqi Yang;Xun Yu Zhou

  • Kalman filtering for multiple time-delay systems

    Xiao Lu;Huanshui Zhang;Wei Wang;Kok-Lay Teo

  • Brief paper: Optimal control problems with a continuous inequality constraint on the state and the control

    R. C. Loxton;K. L. Teo;V. Rehbock;K. F. C. Yiu

  • Sampled-data-based dissipative control of T-S fuzzy systems

    Hong-Bing Zeng;Kok Lay Teo;Yong He;Wei Wang;Wei Wang

  • THE CONTROL PARAMETERIZATION ENHANCING TRANSFORM FOR CONSTRAINED OPTIMAL CONTROL PROBLEMS

    K. L. Teo;L. S. Jennings;Heung Wing Joseph Lee;V. Rehbock

  • A review of methods and algorithms for optimizing construction scheduling

    Jingyang Zhou;Peter E. D. Love;Xiangyu Wang;Kok Lay Teo

  • Characterizations and applications of prequasi-invex functions

    X. M. Yang;X. M. Yang;X. Q. Yang;K. L. Teo

  • A new computational algorithm for functional inequality constrained optimization problems

    K. L. Teo;V. Rehbock;L. S. Jennings

  • Control parametrization enhancing technique for time optimal control problems

    H.W.J. Lee;K.L. Teo;Leslie Jennings;V. Rehbock

  • Brief paper: Optimal control problems with multiple characteristic time points in the objective and constraints

    R. C. Loxton;K. L. Teo;V. Rehbock

Frequent Co-Authors

Xiaoqi Yang
Xiaoqi Yang Hong Kong Polytechnic University
Ryan Loxton
Ryan Loxton Curtin University
Antonio Cantoni
Antonio Cantoni University of Western Australia
Victor Sreeram
Victor Sreeram University of Western Australia
N. U. Ahmed
N. U. Ahmed University of Ottawa
Fei Liu
Fei Liu Jiangnan University
Sven Nordholm
Sven Nordholm Curtin University
Xiangyu Wang
Xiangyu Wang Curtin University
Xinzhi Liu
Xinzhi Liu University of Waterloo
Michael E. Fisher
Michael E. Fisher University of Maryland, College Park

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