World's Best Scientists 2026 revealed!
Robert John Urquhart

Robert John Urquhart

D-Index & Metrics

Computer Science

D-Index
52
Citations
6915
World Ranking
5181
National Ranking
2375

Robert John Urquhart 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 Robert John Urquhart 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: 144 publications — 24th percentile

24% of scientists in this discipline score the same or lower.

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

Robert John Urquhart 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 Robert John Urquhart 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: 52 D-Index — 65th percentile

65% of scientists in this discipline score the same or lower.

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

Overview

Robert John Urquhart is affiliated with IBM in the United States. Their professional work is situated within this organization, contributing to IBM's research and development efforts.

While detailed records of their recent papers, frequent co-authors, and publication venues are not available, the affiliation with a major technology company such as IBM indicates engagement in applied scientific or technological research.

There are no listed book publications or specific fields and subfields of study directly attributed to Robert John Urquhart in the available data. Similarly, no main topics of research or study have been specified.

Information on awards or distinctions received by Robert John Urquhart is not provided. The scientist is currently living, as indicated in the source data.

Best Publications

  • Method and system for periodic trace sampling using a mask to qualify trace data

    Raymond Morris Bryant;Frank Eliot Levine

  • Method and system for shadow heap memory leak detection and other heap analysis in an object-oriented environment during real-time trace processing

    William Preston Alexander;Frank Eliot Levine;William Robert Reynolds;Robert J. Urquhart

  • Apparatus and method for dynamic instrumenting of code to minimize system perturbation

    Robert Tod Dimpsey;Frank Eliot Levine;Robert John Urquhart

  • Computer program product for utilizing fast polygon fill routines in a graphics display system

    Gary Michael Beauregard;Larry Keith Loucks;Khoa Dang Nguyen;Robert John Urquhart

  • Non-invasive trace-driven system and method for computer system profiling

    Thomas W. Keller;Robert J. Urquhart

  • Code instrumentation system with non intrusive means and cache memory optimization for dynamic monitoring of code segments

    Geoffrey Owen Blandy;Maher Afif Saba;Robert J. Urquhart

  • Method, apparatus and computer program product for efficient per thread performance information

    Scott Thomas Jones;Frank Eliot Levine;Luc Rene Smolders;Robert John Urquhart

  • Method and apparatus for optimizing code execution using annotated trace information having performance indicator and counter information

    Jimmie Earl Dewitt;Frank Eliot Levine;Christopher Michael Richardson;Robert John Urquhart

  • Method and system for memory leak detection in an object-oriented environment during real-time trace processing

    William Preston Alexander;John Day Howard;Frank Eliot Levine;William Robert Reynolds

  • Method and apparatus for structured profiling of data processing systems and applications

    William Preston Alexander;Robert Francis Berry;Donald L. Mulvey;Robert John Urquhart

  • Method and system for autonomic monitoring of semaphore operation in an application

    Jimmie Earl Dewitt;Frank Eliot Levine;Christopher Michael Richardson;Robert John Urquhart

  • System and method for tracing instructions in an information handling system without changing the system source code

    Chester Charles John;Robert J. Urquhart

  • Method, apparatus and computer program product for efficient, large counts of per thread performance events

    Scott Thomas Jones;Frank Eliot Levine;Robert John Urquhart

  • Method and system for instruction tracing with enhanced interrupt avoidance

    Jimmie Earl Dewitt;Riaz Y. Hussain;Frank Eliot Levine;Robert John Urquhart

  • Method and system for periodic trace sampling for real-time generation of segments of call stack trees

    Robert Francis Berry;Frank Eliot Levine;Robert J. Urguhart

  • Method and apparatus for benchmarking byte code sequences

    William Preston Alexander;Robert Francis Berry;Riaz Hussain;Paul Jerome Kilpatrick

  • Method and apparatus for autonomically initiating measurement of secondary metrics based on hardware counter values for primary metrics

    Jimmie Earl Dewitt;Frank Eliot Levine;Christopher Michael Richardson;Robert John Urquhart

  • Method and apparatus for determining computer program flows autonomically using hardware assisted thread stack tracking and cataloged symbolic data

    Jimmie Earl Dewitt;Frank Eliot Levine;Christopher Michael Richardson;Robert John Urquhart

  • System and method for providing trace information

    William Preston Alexander;Robert Francis Berry;Riaz Y. Hussain;Chester Charles John

  • Method and system for tracing profiling information using per thread metric variables with reused kernel threads

    Ronald O'Neal Edmark;Frank Eliot Levine;Robert J. Urquhart

Frequent Co-Authors

Frank Eliot Levine
Frank Eliot Levine IBM (United States)

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