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Company · Tokyo · Japan

Obayashi (Japan)

In research, Obayashi (Japan) stands highest in Physical Sciences (#9,220 of 12,888 worldwide) and Engineering (#6,264 of 6,636 worldwide), 2022–2025. Relative to its size it is most specialised in Civil and Structural Engineering — Civil and Structural Engineering is 9.9× its share of world research.

obayashi.co.jp/englishROR OpenAlex
World rank, 2022–2025
#15,297
of 28,054 · #12,255 all time
Rank in Japan
#402
of 1,070
Research works
1.7k
▼ 5% vs 2013–17
Citations
24k
13.5 per fractional work
Top-10% rate
10.4%
record average 16.5%
Open access
52%
world 28%

What is Obayashi (Japan) known for in research?

The fields where it stands highest, 2022–2025, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
Physical SciencesDomain #9,220 of 12,888 10.7%130 #9203
EngineeringField #6,264 of 6,636 5.8%69 #6953

Each strip is that field’s whole ranked pool, with the notch where Obayashi (Japan) sits in it, in the colour of the band that rank falls in. The track under the rate is the rate itself: it carries no world mark, because the world rate differs by field (from about 6% to 21% in this record).

What does Obayashi (Japan) specialise in?

Where its research is concentrated relative to its size: Civil and Structural Engineering takes 9.9× the share of its output that it takes of world research.

  1. Civil and Structural EngineeringSubfield · 26.0 works9.9×
← less than its size predicts1×more →

Location quotient, a volume reading rather than an impact one. It surfaces small, lopsided specialities.

Field profile

Location quotient across every field it publishes in: outside the ring is more than an institution of this size would be expected to publish, inside it is less.

Agricultural and Biological Sciences: 0.70× its world share, 7 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.71× its world share, 8 worksBiochemistry, Geneti…Immunology and Microbiology: 0.51× its world share, 1 worksImmunology and Micro…Neuroscience: 0.72× its world share, 3 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 1.43× its world share, 1 worksPharmacology, Toxico…Chemical Engineering: 0.35× its world share, 0 worksChemical EngineeringChemistry: 0.19× its world share, 1 worksChemistryComputer Science: 0.38× its world share, 6 worksComputer ScienceEarth and Planetary Sciences: 1.31× its world share, 5 worksEarth and Planetary …Energy: 0.50× its world share, 1 worksEnergyEngineering: 2.05× its world share, 69 worksEngineeringEnvironmental Science: 1.59× its world share, 18 worksEnvironmental ScienceMaterials Science: 0.67× its world share, 5 worksMaterials ScienceMathematics: 0.35× its world share, 1 worksMathematicsPhysics and Astronomy: 4.98× its world share, 25 worksPhysics and AstronomyDentistry: 0.88× its world share, 1 worksDentistryHealth Professions: 0.87× its world share, 5 worksHealth ProfessionsMedicine: 1.11× its world share, 48 worksMedicineNursing: 0.70× its world share, 1 worksNursingVeterinary: 2.63× its world share, 1 worksVeterinaryArts and Humanities: 0.32× its world share, 2 worksArts and HumanitiesBusiness, Management and Accounting: 0.05× its world share, 0 worksBusiness, Management…Decision Sciences: 0.62× its world share, 1 worksDecision SciencesEconomics, Econometrics and Finance: 0.12× its world share, 1 worksEconomics, Econometr…Psychology: 0.28× its world share, 2 worksPsychologySocial Sciences: 0.38× its world share, 11 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Physics and Astronomy, 5.0×. Every wedge is a field page.

Who are the top researchers at Obayashi (Japan)?

Ranked on the composite score, Yoshikane Kojima, Fumihiro Inoue and Yoji Ishikawa lead among researchers whose main affiliation is Obayashi (Japan).

  1. 1 Yoshikane Kojima Japan · #524,702 worldwide 0 citations · 20 works
  2. 2 Fumihiro Inoue Japan · #651,721 worldwide 125 citations · 85 works
  3. 3 Yoji Ishikawa Japan · #746,046 worldwide 40 citations · 25 works
  4. 4 Osamu Yoshida Japan · #754,498 worldwide 73 citations · 18 works
  5. 5 Takanori Ishii Japan · #947,578 worldwide 0 citations · 15 works
  6. 6 Junichi Yamaguchi Japan · #1,139,801 worldwide 52 citations · 54 works
  7. 7 Shunichi Higuchi Japan · #1,389,127 worldwide 23 citations · 24 works
  8. 8 Yuta Kobayashi Japan · #1,410,394 worldwide 19 citations · 20 works
  9. 9 Tatsuya Koizumi Japan · #1,478,367 worldwide 7 citations · 15 works
  10. 10 Toshihiko Miura Japan · #1,501,242 worldwide 4 citations · 22 works
All ranked researchers at Obayashi (Japan)

Which keywords describe research at Obayashi (Japan)?

By fractional works in 2022–2025, weighted toward what it does more of than the world: Dark Matter, Numerical Simulation, Simulation, Climate Change Impact, Structural Analysis, Particle Physics, Model Predictive Control and Lattice QCD.

▲ more of its work than of the world’s◆ about the world’s share▼ less than the world’s

Size is fractional works in 2022–2025 in the topics tagged with each word; colour is the word's share of this institution's work against its share of the world's. The 40 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 40 words, with their numbers
  1. Epidemiology9◆ 1.06×53 topics
  2. Dark Matter5▲ 21×3 topics
  3. Energy Efficiency5▲ 2.6×7 topics
  4. Numerical Simulation5▲ 7.7×9 topics
  5. Simulation4▲ 7.6×5 topics
  6. Obesity4▲ 2.5×13 topics
  7. Climate Change Impact4▲ 7.8×4 topics
  8. Insulin Resistance4▲ 3.9×9 topics
  9. Structural Analysis4▲ 18×6 topics
  10. Model Predictive Control4▲ 6.5×3 topics
  11. Particle Physics4▲ 23×2 topics
  12. Artificial Neural Networks4▲ 3.5×3 topics
  13. Finite Element Analysis4▲ 6.9×6 topics
  14. Lattice QCD4▲ 26×2 topics
  15. Construction3▲ 11×3 topics
  16. Thermal Comfort3▲ 11×2 topics
  17. Liquefaction3▲ 16×2 topics
  18. Tunnel3▲ 16×2 topics
  19. Finite Element Method3▲ 14×4 topics
  20. Black Holes3▲ 14×3 topics
  21. Building Energy Consumption3▲ 16×1 topic
  22. Durability Performance3▲ 13×2 topics
  23. Energy Simulation3▲ 14×1 topic
  24. Higgs Boson3▲ 25×1 topic
  25. High-Energy Collider3▲ 25×1 topic
  26. Material Properties3▲ 12×3 topics
  27. Analysis3▲ 12×3 topics
  28. Cosmology3▲ 18×3 topics
  29. Design Optimization3▲ 31×2 topics
  30. Mechanical Engineering3▲ 31×2 topics
  31. Dynamic Behavior3▲ 9.9×3 topics
  32. Failure Analysis3▲ 12×3 topics
  33. Fluid Dynamics2▲ 8.2×2 topics
  34. Infertility2▲ 7.9×2 topics
  35. Fatigue Analysis2▲ 35×1 topic
  36. Product Development2▲ 19×1 topic
  37. Terrestrial Laser Scanning2▲ 8.7×2 topics
  38. Ecosystem Management2▲ 18×2 topics
  39. Supernovae2▲ 13×2 topics
  40. landscape conservation2▲ 101×1 topic

Which research topics does Obayashi (Japan) publish most on?

By volume in 2022–2025: Particle physics theoretical and experimental studies, Building Energy and Comfort Optimization, Engineering Applied Research and Urban and spatial planning.

Particle physics theoret…3Particle physics theoretical and experimental studies: 3 fractional worksBuilding Energy and Comf…3Building Energy and Comfort Optimization: 3 fractional worksEngineering Applied Research: 2 fractional worksUrban and spatial planning: 2 fractional worksReproductive Biology and Fertility: 2 fractional worksStructural Behavior of Reinforced Concrete: 2 fractional worksQuantum Chromodynamics and Particle Interactions: 2 fractional worksGeotechnical Engineering…2Geotechnical Engineering and Soil Mechanics: 2 fractional worksGeotechnical Engineering and Underground Structures: 2 fractional worksAdvanced Manufacturing and Logistics Optimization: 2 fractional works
Nuclear and High Energy PhysicsBuilding and ConstructionCivil and Structural EngineeringNature and Landscape Conservation2 others

Area is fractional works; colour is the subfield each topic belongs to.

  1. 1 Particle physics theoretical and experimental studies Nuclear and High Energy Physics 3 works
  2. 2 Building Energy and Comfort Optimization Building and Construction 3 works
  3. 3 Engineering Applied Research Civil and Structural Engineering 2 works
  4. 4 Urban and spatial planning Nature and Landscape Conservation 2 works
  5. 5 Reproductive Biology and Fertility Public Health, Environmental and Occupational Health 2 works
  6. 6 Structural Behavior of Reinforced Concrete Building and Construction 2 works
  7. 7 Quantum Chromodynamics and Particle Interactions Nuclear and High Energy Physics 2 works
  8. 8 Geotechnical Engineering and Soil Mechanics Civil and Structural Engineering 2 works
  9. 9 Geotechnical Engineering and Underground Structures Civil and Structural Engineering 2 works
  10. 10 Advanced Manufacturing and Logistics Optimization Industrial and Manufacturing Engineering 2 works

How open and international is its research?

Against the world’s own shares — the tick on each track. Both are shares of its output, so they sit on one scale and can be read against each other as well as against the world.

openly available52.4%not open47.6%

World: 28% of research is openly available.

with international co-authors15.1%domestic only84.9%

World: 19% is written across borders.

How has Obayashi (Japan)'s research output changed?

Output in 2018–2022 was 5% lower than in 2013–2017.

1990200020102020
grewheldshrank

The same series as a ribbon — one cell per year, darker for more. The line above answers how much; this answers when.

Other research institutions in Tokyo

All research institutions in Tokyo

Research measures only: rankings here say nothing about teaching, admissions or student experience. Comparable institutions and collaboration partners are in the interactive view on the map.