World's Best Scientists 2026 revealed!
David Lorge Parnas

David Lorge Parnas

D-Index & Metrics

Computer Science

D-Index
55
Citations
27898
World Ranking
4178
National Ranking
164

David Lorge Parnas publication distribution in Computer Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Computer Science in 2026. The highlighted bar marks where David Lorge Parnas sits on this spectrum.

32–41 publications: 7 scientists 42–51 publications: 22 scientists 52–61 publications: 82 scientists 62–71 publications: 134 scientists 72–81 publications: 249 scientists 82–91 publications: 324 scientists 92–101 publications: 421 scientists 102–111 publications: 420 scientists 112–121 publications: 497 scientists 122–131 publications: 544 scientists 132–141 publications: 555 scientists 142–151 publications: 609 scientists 152–161 publications: 559 scientists 162–171 publications: 534 scientists 172–181 publications: 556 scientists 182–191 publications: 583 scientists 192–201 publications: 519 scientists 202–211 publications: 508 scientists 212–221 publications: 490 scientists 222–231 publications: 437 scientists 232–241 publications: 423 scientists 242–251 publications: 408 scientists 252–261 publications: 377 scientists 262–271 publications: 301 scientists 272–281 publications: 335 scientists 282–291 publications: 320 scientists 292–301 publications: 293 scientists 302–311 publications: 250 scientists 312–321 publications: 238 scientists 322–331 publications: 206 scientists 332–341 publications: 209 scientists 342–351 publications: 208 scientists 352–361 publications: 162 scientists 362–371 publications: 176 scientists 372–381 publications: 127 scientists 382–391 publications: 158 scientists 392–401 publications: 128 scientists 402–411 publications: 104 scientists 412–421 publications: 94 scientists 422–431 publications: 99 scientists 432–441 publications: 83 scientists 442–451 publications: 108 scientists 452–461 publications: 73 scientists 462–471 publications: 77 scientists 472–481 publications: 69 scientists 482–491 publications: 84 scientists 492–501 publications: 62 scientists 502–511 publications: 54 scientists 512–521 publications: 57 scientists 522–531 publications: 51 scientists 532–541 publications: 51 scientists 542–551 publications: 32 scientists 552–561 publications: 38 scientists 562–571 publications: 28 scientists 572–581 publications: 43 scientists 582–591 publications: 33 scientists 592–601 publications: 41 scientists 602–611 publications: 32 scientists 612–621 publications: 28 scientists 622–631 publications: 25 scientists 632–641 publications: 27 scientists 642–651 publications: 17 scientists 652–661 publications: 20 scientists 662–671 publications: 17 scientists 672–681 publications: 15 scientists 682–691 publications: 14 scientists 692–701 publications: 21 scientists 702–711 publications: 13 scientists 712–721 publications: 12 scientists 722–731 publications: 19 scientists 732–741 publications: 14 scientists 742–751 publications: 12 scientists 752–761 publications: 10 scientists 762–771 publications: 10 scientists 772–781 publications: 11 scientists 782–791 publications: 10 scientists 792–801 publications: 11 scientists 802–811 publications: 8 scientists 812–821 publications: 8 scientists 822–831 publications: 7 scientists 832–841 publications: 11 scientists 842–851 publications: 10 scientists 852–861 publications: 5 scientists 862–871 publications: 9 scientists 872–881 publications: 4 scientists 882–891 publications: 6 scientists 892–901 publications: 3 scientists 902–911 publications: 6 scientists 912–921 publications: 3 scientists 922–931 publications: 2 scientists 932–941 publications: 2 scientists 942–951 publications: 2 scientists 952–961 publications: 3 scientists 962–971 publications: 3 scientists 972–981 publications: 3 scientists 982–990 publications: 5 scientists 991+ publications: 100 scientists
32 publications 991+

This scientist: 233 publications — 57th percentile

57% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 991 publications or more.

David Lorge Parnas D-index placement in Computer Science in 2026

The chart shows the D-index (discipline H-index) distribution of Computer Science scientists ranked by Research.com in 2026. The highlighted bar marks where David Lorge Parnas sits on this spectrum.

30–31 D-Index: 879 scientists 32–33 D-Index: 983 scientists 34–35 D-Index: 918 scientists 36–37 D-Index: 990 scientists 38–39 D-Index: 968 scientists 40–41 D-Index: 907 scientists 42–43 D-Index: 821 scientists 44–45 D-Index: 763 scientists 46–47 D-Index: 689 scientists 48–49 D-Index: 543 scientists 50–51 D-Index: 543 scientists 52–53 D-Index: 518 scientists 54–55 D-Index: 500 scientists 56–57 D-Index: 458 scientists 58–59 D-Index: 400 scientists 60–61 D-Index: 337 scientists 62–63 D-Index: 308 scientists 64–65 D-Index: 292 scientists 66–67 D-Index: 249 scientists 68–69 D-Index: 213 scientists 70–71 D-Index: 192 scientists 72–73 D-Index: 189 scientists 74–75 D-Index: 165 scientists 76–77 D-Index: 139 scientists 78–79 D-Index: 119 scientists 80–81 D-Index: 121 scientists 82–83 D-Index: 113 scientists 84–85 D-Index: 88 scientists 86–87 D-Index: 87 scientists 88–89 D-Index: 75 scientists 90–91 D-Index: 69 scientists 92–93 D-Index: 57 scientists 94–95 D-Index: 46 scientists 96–97 D-Index: 38 scientists 98–99 D-Index: 34 scientists 100–101 D-Index: 36 scientists 102–103 D-Index: 27 scientists 104–105 D-Index: 37 scientists 106–107 D-Index: 18 scientists 108–109 D-Index: 31 scientists 110–111 D-Index: 19 scientists 112–113 D-Index: 16 scientists 114–115 D-Index: 12 scientists 116–117 D-Index: 20 scientists 118–119 D-Index: 15 scientists 120–121 D-Index: 5 scientists 122–123 D-Index: 20 scientists 124–125 D-Index: 8 scientists 126–127 D-Index: 5 scientists 128–129 D-Index: 7 scientists 130 D-Index: 3 scientists 131+ D-Index: 98 scientists
30 D-Index 131+

This scientist: 55 D-Index — 71st percentile

71% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 131 D-Index or more.

Research.com Recognitions

  • 2009 - IEEE Fellow For contributions to software engineering
  • 2006 - Member of the Royal Irish Academy
  • 1994 - ACM Fellow For the richness of insights¿provided into system software design characteristics that provide for system change. The award winning work is entitled Design Software for Ease of Extension and Contraction.
  • 1992 - Fellow of the Royal Society of Canada Academy of Science
  • The Canadian Academy of Engineering
  • The Canadian Academy of Engineering
  • The Canadian Academy of Engineering
  • The Canadian Academy of Engineering
  • The Canadian Academy of Engineering

Overview

David Lorge Parnas is affiliated with McMaster University in Canada and has contributed to the field of computer science with a focus on software engineering techniques and practices. Their research has encompassed advanced software engineering methodologies as well as safety systems engineering in autonomy.

The main areas of study for their work include:

  • Computer Science

Within this domain, Parnas has explored several subfields:

  • Information Systems
  • Artificial Intelligence
  • Safety, Risk, Reliability and Quality

The topics covered in their research reflect their focus areas:

  • Software Engineering Techniques and Practices
  • Advanced Software Engineering Methodologies
  • Safety Systems Engineering in Autonomy

Parnas has published in notable academic venues, including:

  • Computer
  • IEEE Transactions on Software Engineering

Recent publications include:

  • "Software Engineering: A Profession in Waiting" (2021) in Computer
  • "Three "Influential" Software Design Papers" (2025) in IEEE Transactions on Software Engineering

There are no frequent co-authors recorded for Parnas's recent works.

Over the course of their career, David Lorge Parnas has received several distinctions. These include:

  • IEEE Fellow in 2009 for contributions to software engineering
  • Member of the Royal Irish Academy in 2006
  • ACM Fellow in 1994 for insights into system software design characteristics, particularly the work titled "Design Software for Ease of Extension and Contraction"
  • Fellow of the Royal Society of Canada in 1992 (Academy of Science)
  • Membership in The Canadian Academy of Engineering (year unspecified)

Best Publications

  • On the criteria to be used in decomposing systems into modules

    David L. Parnas

  • A rational design process: how and why to fake it

    David Lorge Parnas;Paul C. Clements

  • Designing software for ease of extension and contraction

    David L. Parnas

  • On the design and development of program families

    David L. Parnas

  • Software aging

    David Lorge Parnas

  • A technique for software module specification with examples

    D. L. Parnas

  • The modular structure of complex systems

    D. L. Parnas;P. C. Clements;D. M. Weiss

  • Concurrent control with “readers” and “writers”

    P. J. Courtois;F. Heymans;D. L. Parnas

  • Software aspects of strategic defense systems

    David Lorge Parnas

  • A technique for software module specification with examples

    Unknown

  • Scheduling processes with release times, deadlines, precedence, and exclusion relations

    Jia Xu;David Lorge Parnas

  • Functional documents for computer systems

    David Lorge Parnas;Jan Madey

  • Evaluation of safety critical software

    David L. Parnas;A. John van Schouwen;Shu Po Kwan

  • Information distribution aspects of design methodology

    David Lorge. Parnas

  • On satisfying timing constraints in hard-real-time systems

    J. Xu;D.L. Parnas

  • Active design reviews: principles and practices

    David L. Parnas;David M. Weiss

  • On the use of transition diagrams in the design of a user interface for an interactive computer system

    David L. Parnas

  • Software Requirements for the A-7E Aircraft.

    Thomas A. Alspaugh;Stuart R. Faulk;Kathryn H. Britton;R. A. Parker

  • Software engineering programs are not computer science programs

    D.L. Parnas

  • Wikipedia risks

    Peter Denning;Jim Horning;David Parnas;Lauren Weinstein

  • Assessment of safety-critical software in nuclear power plants

    D.L. Parnas;J. Madey;G.J.K. Asmis

Frequent Co-Authors

Paul Clements
Paul Clements BigLever Software
T. H. Tse
T. H. Tse University of Hong Kong
Leon J. Osterweil
Leon J. Osterweil University of Massachusetts Amherst
John Rushby
John Rushby SRI International
Manfred Broy
Manfred Broy Technical University of Munich
Robert Meersman
Robert Meersman Graz University of Technology
Premkumar Devanbu
Premkumar Devanbu University of California, Davis
Gregor Kiczales
Gregor Kiczales University of British Columbia
Yair Wand
Yair Wand University of British Columbia
Zhi-Quan Luo
Zhi-Quan Luo Chinese University of Hong Kong, Shenzhen

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

Studying Computer Science in the USA opens up a diverse range of online degree options and career pathways. Many students are now considering accredited online programs to enjoy flexibility and affordability while preparing for high-demand tech careers.

If you’re looking for quality options, take a look at the top 10 online universities that offer nationally accredited Computer Science and technology-related degrees. These institutions provide recognized programs that balance cost, convenience, and educational rigor.

For those interested in the interactive entertainment industry, there are online video game design degree programs that help launch careers in game development, animation, and digital media. Cybersecurity is another fast-growing field; pursuing online cybersecurity master's programs prepares professionals to protect digital infrastructure and data.

Computer Science skills are also highly valued in fields like project and site management. For those looking to apply their expertise in construction and technology, the best 2 year construction management degree online programs offer pathways to leadership in this vital industry sector.

Best Scientists Citing David Lorge Parnas

Trending Scientists

Recently Published Articles