World's Best Scientists 2026 revealed!
Shunji Osaki

Shunji Osaki

D-Index & Metrics

Engineering and Technology

D-Index
41
Citations
8018
World Ranking
6872
National Ranking
139

Shunji Osaki publication distribution in Engineering and Technology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Engineering and Technology in 2026. The highlighted bar marks where Shunji Osaki sits on this spectrum.

38–47 publications: 20 scientists 48–57 publications: 35 scientists 58–67 publications: 96 scientists 68–77 publications: 135 scientists 78–87 publications: 190 scientists 88–97 publications: 259 scientists 98–107 publications: 283 scientists 108–117 publications: 369 scientists 118–127 publications: 341 scientists 128–137 publications: 386 scientists 138–147 publications: 372 scientists 148–157 publications: 457 scientists 158–167 publications: 415 scientists 168–177 publications: 407 scientists 178–187 publications: 421 scientists 188–197 publications: 378 scientists 198–207 publications: 403 scientists 208–217 publications: 317 scientists 218–227 publications: 346 scientists 228–237 publications: 321 scientists 238–247 publications: 260 scientists 248–257 publications: 280 scientists 258–267 publications: 240 scientists 268–277 publications: 214 scientists 278–287 publications: 242 scientists 288–297 publications: 203 scientists 298–307 publications: 166 scientists 308–317 publications: 154 scientists 318–327 publications: 175 scientists 328–337 publications: 159 scientists 338–347 publications: 99 scientists 348–357 publications: 131 scientists 358–367 publications: 106 scientists 368–377 publications: 118 scientists 378–387 publications: 97 scientists 388–397 publications: 108 scientists 398–407 publications: 82 scientists 408–417 publications: 71 scientists 418–427 publications: 64 scientists 428–437 publications: 55 scientists 438–447 publications: 54 scientists 448–457 publications: 60 scientists 458–467 publications: 47 scientists 468–477 publications: 40 scientists 478–487 publications: 30 scientists 488–497 publications: 29 scientists 498–507 publications: 38 scientists 508–517 publications: 40 scientists 518–527 publications: 32 scientists 528–537 publications: 23 scientists 538–547 publications: 28 scientists 548–557 publications: 23 scientists 558–567 publications: 19 scientists 568–577 publications: 16 scientists 578–587 publications: 17 scientists 588–597 publications: 18 scientists 598–607 publications: 22 scientists 608–617 publications: 15 scientists 618–627 publications: 9 scientists 628–637 publications: 11 scientists 638–647 publications: 21 scientists 648–657 publications: 12 scientists 658–667 publications: 9 scientists 668–677 publications: 11 scientists 678–687 publications: 9 scientists 688–697 publications: 6 scientists 698–707 publications: 14 scientists 708–717 publications: 7 scientists 718–727 publications: 8 scientists 728–737 publications: 10 scientists 738–747 publications: 9 scientists 748–757 publications: 5 scientists 758–767 publications: 5 scientists 768–777 publications: 11 scientists 778–787 publications: 7 scientists 788–797 publications: 2 scientists 798–803 publications: 4 scientists 804+ publications: 100 scientists
38 publications 804+

This scientist: 294 publications — 75th percentile

75% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 804 publications or more.

Shunji Osaki D-index placement in Engineering and Technology in 2026

The chart shows the D-index (discipline H-index) distribution of Engineering and Technology scientists ranked by Research.com in 2026. The highlighted bar marks where Shunji Osaki sits on this spectrum.

30 D-Index: 59 scientists 31 D-Index: 114 scientists 32 D-Index: 129 scientists 33 D-Index: 189 scientists 34 D-Index: 200 scientists 35 D-Index: 262 scientists 36 D-Index: 311 scientists 37 D-Index: 312 scientists 38 D-Index: 350 scientists 39 D-Index: 385 scientists 40 D-Index: 348 scientists 41 D-Index: 362 scientists 42 D-Index: 426 scientists 43 D-Index: 380 scientists 44 D-Index: 310 scientists 45 D-Index: 341 scientists 46 D-Index: 301 scientists 47 D-Index: 306 scientists 48 D-Index: 271 scientists 49 D-Index: 246 scientists 50 D-Index: 210 scientists 51 D-Index: 253 scientists 52 D-Index: 213 scientists 53 D-Index: 221 scientists 54 D-Index: 195 scientists 55 D-Index: 186 scientists 56 D-Index: 170 scientists 57 D-Index: 167 scientists 58 D-Index: 166 scientists 59 D-Index: 144 scientists 60 D-Index: 152 scientists 61 D-Index: 141 scientists 62 D-Index: 138 scientists 63 D-Index: 131 scientists 64 D-Index: 118 scientists 65 D-Index: 114 scientists 66 D-Index: 119 scientists 67 D-Index: 95 scientists 68 D-Index: 87 scientists 69 D-Index: 77 scientists 70 D-Index: 89 scientists 71 D-Index: 69 scientists 72 D-Index: 54 scientists 73 D-Index: 46 scientists 74 D-Index: 55 scientists 75 D-Index: 54 scientists 76 D-Index: 49 scientists 77 D-Index: 53 scientists 78 D-Index: 46 scientists 79 D-Index: 28 scientists 80 D-Index: 39 scientists 81 D-Index: 36 scientists 82 D-Index: 24 scientists 83 D-Index: 26 scientists 84 D-Index: 36 scientists 85 D-Index: 18 scientists 86 D-Index: 25 scientists 87 D-Index: 19 scientists 88 D-Index: 26 scientists 89 D-Index: 27 scientists 90 D-Index: 23 scientists 91 D-Index: 15 scientists 92 D-Index: 12 scientists 93 D-Index: 9 scientists 94 D-Index: 15 scientists 95 D-Index: 10 scientists 96 D-Index: 13 scientists 97 D-Index: 13 scientists 98 D-Index: 9 scientists 99 D-Index: 7 scientists 100 D-Index: 7 scientists 101 D-Index: 8 scientists 102 D-Index: 7 scientists 103 D-Index: 7 scientists 104 D-Index: 9 scientists 105 D-Index: 6 scientists 106 D-Index: 9 scientists 107+ D-Index: 99 scientists
30 D-Index 107+

This scientist: 41 D-Index — 31st percentile

31% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 107 D-Index or more.

Overview

Shunji Osaki is a researcher affiliated with Nanzan University in Japan, specializing in Agricultural and Biological Sciences as well as Environmental Science. Their work spans multiple subfields, including Ecology, Evolution, Behavior and Systematics, Plant Science, Ecology, Nature and Landscape Conservation, and Atmospheric Science.

The scientist's research primarily focuses on topics related to plant and animal studies, ecology and vegetation dynamics, plant parasitism and resistance, lichen and fungal ecology, bryophyte studies and records, peatlands and wetlands ecology, and rangeland and wildlife management.

Shunji Osaki has published research in several academic venues, including:

  • Plant Ecology
  • Journal of Plant Research
  • Polar Science
  • Journal of Agricultural Science
  • The Proceedings of Mechanical Engineering Congress Japan

Recent papers authored by Osaki include:

  • "Phenological shifts of the invasive annual weed Bidens pilosa var. pilosa in response to warmer temperature" (2022), published in Plant Ecology
  • "Effects of climate warming on the production of the pioneer moss Racomitrium japonicum: seasonal and year-to-year variations" (2021), published in Journal of Plant Research
  • "Thermal germination characteristics of three High Arctic plants: Implications for their response to climate warming" (2024), published in Polar Science

Frequent co-authors collaborating with Shunji Osaki include Takayuki Nakatsubo, Jun Wasaki, Masaki Uchida, Hisako Nomura, and Lin Gan.

The body of Osaki's work integrates ecological and climatic perspectives, examining the impacts of warming environments on plant phenology and physiology, particularly in mosses and invasive species. This intersects with broader environmental issues such as landscape conservation and species adaptation to climate change.

Best Publications

  • S-Shaped Reliability Growth Modeling for Software Error Detection

    Shigeru Yamada;Mitsuru Ohba;Shunji Osaki

  • The Discrete Weibull Distribution

    Toshio Nakagawa;Shunji Osaki

  • Software Reliability Growth Modeling: Models and Applications

    Unknown

  • s-Shaped Software Reliability Growth Models and Their Applications

    Shigeru Yamada;Mitsuru Ohba;Shunji Osaki

  • Imperfect debugging models with fault introduction rate for software reliability assessment

    Shigeru Yamada;Koichi Tokuno;Shunji Osaki

  • Software-reliability growth with a Weibull test-effort: a model and application

    S. Yamada;J. Hishitani;S. Osaki

  • Cost-Reliability Optimal Release Policies for Software Systems

    Shigeru Yamada;Shunji Osaki

  • Bibliography for Reliability and Availability of Stochastic Systems

    Shunji Osaki;Toshio Nakagawa

  • Optimal software release policies with simultaneous cost and reliability requirements

    Shigeru Yamada;Shunji Osaki

  • Discrete software reliability growth models

    Shioeru Yamada;Shunji Osaki

  • Software reliability measurement and assessment with stochastic differential equations

    Shigeru Yamada;Mitsuhiro Kimura;Hiroaki Tanaka;Shunji Osaki

  • Optimum Release Policies for a Software System with a Scheduled Software Delivery Time

    Shigeru Yamada;Hiroyuki Narihisa;Shunji Osaki

  • Optimal software release scheduling based on artificial neural networks

    Tadashi Dohi;Yasuhiko Nishio;Shunji Osaki

  • The Optimum Repair Limit Replacement Policies

    Toshio Nakagawa;Shunji Osaki

  • Optimal control of preventive maintenance schedule and safety stocks in an unreliable manufacturing environment

    Tadashi Dohi;Hiroyuki Okamura;Shunji Osaki

  • Reliability growth models for hardware and software systems based on nonhomogeneous Poisson processes: A survey

    Shigeru Yamada;Shunji Osaki

  • An optimal ordering policy for a spare unit with lead time

    L.C. Thomas;Shunji Osaki

  • Stochastic behaviour of a two-unit priority standby redundant system with repair

    Toshio Nakagawa;Shunji Osaki

  • A Note on Age Replacement

    Shunji Osaki;Toshio Nakagawa

  • Optimal replacement policies for a two-unit system with shock damage interaction

    Unknown

  • A two-unit standby redundant system with repair and preventive maintenance

    Shunji Osaki;Tatsuyuki Asakura

  • OPTIMUM REPLACEMENT POLICIES WITH DELAY

    Toshio Nakagawa;Shunji Osaki

Frequent Co-Authors

Tadashi Dohi
Tadashi Dohi Hiroshima University
Toshio Nakagawa
Toshio Nakagawa Aichi Institute of Technology
Satoshi Fukumoto
Satoshi Fukumoto Tohoku University
Lyn C. Thomas
Lyn C. Thomas University of Southampton
Kishor S. Trivedi
Kishor S. Trivedi Duke University

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