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Research facility · Kokubunji · Japan

Railway Technical Research Institute

In research, Railway Technical Research Institute stands highest in Physical Sciences (#6,957 of 10,670 worldwide), Engineering (#4,225 of 5,901 worldwide) and Civil and Structural Engineering (#731 of 908 worldwide), 2022-now. Relative to its size it is most specialised in Civil and Structural Engineering, Industrial and Manufacturing Engineering and Mechanical Engineering (Civil and Structural Engineering is 16.3× its share of world research).

rtri.or.jp/engROR OpenAlex
World rank, 2022-now
#13,661
of 22,385 · #11,613 all time
Rank in Japan
#385
of 924
Research works
3.3k
▼ 33% vs 2018-21
Citations
19k
5.7 per fractional work
Top-10% rate
2.1%
all institutions 10.0%
vs its own fields
0.65×
1.00× is exactly expected
Open access
59%
world 40%
International
6%
world 18%
Railway Technical Research Institute

What is Railway Technical Research Institute known for in research?

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

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
Physical SciencesDomain #6,957 of 10,670 1.9%354 #6757
EngineeringField #4,225 of 5,901 2.1%304 #2362
Civil and Structural EngineeringSubfield #731 of 908 2.7%77 #881
Mechanical EngineeringSubfield #1,163 of 1,319 1.6%82 #1891

Each strip is that field's whole ranked pool, with the notch where Railway Technical Research Institute 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 average mark, because the average differs by field (from about 6% in Dentistry to 21% in Economics).

Which of those standings moved

The same fields on both windows: where it stood over the whole record, and where it stands in 2022-now. The distance is the story, and it is the one thing the two rank columns above cannot show.

  1. Physical Sciences#6,757 #6,957
  2. Engineering#2,362 #4,225
  3. Civil and Structural Engineering#881 #731
  4. Mechanical Engineering#1,891 #1,163
all time2022-now, better2022-now, worse

A dot further right is a better standing. Fields it was not ranked in over the whole record are left out.

Which fields of science does Railway Technical Research Institute work in?

In 2022-now, 91% of research at Railway Technical Research Institute is in Physical Sciences, 6% in Social Sciences. Its largest fields are Engineering (78%), Computer Science (4%), Environmental Science (3%). It does 2.3× the world's share of Physical Sciences.

Physical Sciences: 385 fractional works · 91.1% of its workEngineering: 328 fractional works · 77.7% of its workMechanical Engineering: 88 fractional works · 20.8% of its workCivil and Structural Engineering: 81 fractional works · 19.3% of its workIndustrial and Manufacturing Engineering: 28 fractional works · 6.5% of its workMechanics of Materials: 23 fractional works · 5.4% of its workAerospace Engineering: 21 fractional works · 5.0% of its workAutomotive Engineering: 19 fractional works · 4.4% of its workElectrical and Electronic Engineering: 18 fractional works · 4.2% of its workControl and Systems Engineering: 11 fractional works · 2.5% of its workGeneral Engineering: 9 fractional works · 2.2% of its workBiomedical Engineering: 8 fractional works · 2.0% of its workOcean Engineering: 5 fractional works · 1.3% of its workSafety, Risk, Reliability and Quality: 5 fractional works · 1.2% of its workComputational Mechanics: 5 fractional works · 1.2% of its workBuilding and Construction: 4 fractional works · 0.9% of its workMedia Technology: 3 fractional works · 0.8% of its workComputer Science: 19 fractional works · 4.5% of its workArtificial Intelligence: 6 fractional works · 1.4% of its workComputer Vision and Pattern Recognition: 4 fractional works · 0.8% of its workComputer Networks and Communications: 2 fractional works · 0.6% of its workComputer Graphics and Computer-Aided Design: 2 fractional works · 0.6% of its workSignal Processing: 1 fractional works · 0.3% of its workInformation Systems: 1 fractional works · 0.3% of its workSoftware: 1 fractional works · 0.2% of its workHuman-Computer Interaction: 1 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.1% of its workEnvironmental Science: 12 fractional works · 2.8% of its workEnvironmental Engineering: 4 fractional works · 0.8% of its workManagement, Monitoring, Policy and Law: 3 fractional works · 0.8% of its workPollution: 1 fractional works · 0.3% of its workNature and Landscape Conservation: 1 fractional works · 0.3% of its workSmaller subfields together: 2 fractional works · 0.6% of its workEarth and Planetary Sciences: 11 fractional works · 2.7% of its workGeophysics: 6 fractional works · 1.5% of its workAtmospheric Science: 3 fractional works · 0.7% of its workSmaller subfields together: 2 fractional works · 0.4% of its workMaterials Science: 7 fractional works · 1.7% of its workMaterials Chemistry: 4 fractional works · 1.0% of its workElectronic, Optical and Magnetic Materials: 2 fractional works · 0.4% of its workSmaller subfields together: 1 fractional works · 0.3% of its workPhysics and Astronomy: 6 fractional works · 1.3% of its workCondensed Matter Physics: 3 fractional works · 0.8% of its workSmaller subfields together: 2 fractional works · 0.5% of its workMathematics: 1 fractional works · 0.2% of its workEnergy: 1 fractional works · 0.2% of its workChemistry: 0 fractional works · 0.0% of its workSocial Sciences: 27 fractional works · 6.4% of its workPsychology: 10 fractional works · 2.3% of its workSocial Psychology: 6 fractional works · 1.3% of its workExperimental and Cognitive Psychology: 4 fractional works · 0.9% of its workSmaller subfields together: 0 fractional works · 0.1% of its workSocial Sciences: 9 fractional works · 2.1% of its workTransportation: 5 fractional works · 1.1% of its workSafety Research: 2 fractional works · 0.4% of its workSociology and Political Science: 2 fractional works · 0.4% of its workSmaller subfields together: 1 fractional works · 0.2% of its workDecision Sciences: 4 fractional works · 1.0% of its workStatistics, Probability and Uncertainty: 3 fractional works · 0.7% of its workManagement Science and Operations Research: 1 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.0% of its workBusiness, Management and Accounting: 2 fractional works · 0.5% of its workStrategy and Management: 2 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.0% of its workEconomics, Econometrics and Finance: 1 fractional works · 0.3% of its workGeneral Economics, Econometrics and Finance: 1 fractional works · 0.3% of its workArts and Humanities: 1 fractional works · 0.2% of its workHealth Sciences: 6 fractional works · 1.4% of its workMedicine: 4 fractional works · 1.0% of its workPulmonary and Respiratory Medicine: 2 fractional works · 0.5% of its workSmaller subfields together: 2 fractional works · 0.5% of its workHealth Professions: 1 fractional works · 0.3% of its workSpeech and Hearing: 1 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.1% of its workLife Sciences: 5 fractional works · 1.1% of its workBiochemistry, Genetics and Molecular Biology: 3 fractional works · 0.7% of its workMolecular Biology: 2 fractional works · 0.4% of its workSmaller subfields together: 1 fractional works · 0.3% of its workAgricultural and Biological Sciences: 1 fractional works · 0.3% of its workNeuroscience: 1 fractional works · 0.2% of its workALL ITS WORKRailway TechnicalResearch…423fractional works, 2022-now
Life Sciences1%Physical Sciences91%Health Sciences1%Social Sciences6%

Each ring splits the one inside it: the four domains of science, their fields, their subfields. Size is fractional works in 2022-now. Every slice is a page; the interactive view zooms down to single topics and colours each by how much more of it this institution does than the world.

Its 4 domains and 21 fields, with their numbers
    1. Engineering32877.7%
    2. Computer Science194.5%
    3. Environmental Science122.8%
    4. Earth and Planetary Sciences112.7%
    5. Materials Science71.7%
    6. Physics and Astronomy61.3%
    7. Mathematics10.2%
    8. Energy10.2%
    9. Chemistry00.0%
    10. Chemical Engineering00.0%
    1. Psychology102.3%
    2. Social Sciences92.1%
    3. Decision Sciences41.0%
    4. Business, Management and Accounting20.5%
    5. Economics, Econometrics and Finance10.3%
    6. Arts and Humanities10.2%
    1. Medicine41.0%
    2. Health Professions10.3%
    1. Biochemistry, Genetics and Molecular Biology30.7%
    2. Agricultural and Biological Sciences10.3%
    3. Neuroscience10.2%
All of science, and how each field's share has moved since 1950: the Science domain explorer

What does Railway Technical Research Institute specialise in?

Where its research is concentrated relative to its size: Civil and Structural Engineering takes 16.3× the share of its output that it takes of world research.

  1. Civil and Structural EngineeringSubfield · 81.4 works16×
  2. Industrial and Manufacturing EngineeringSubfield · 27.7 works13×
  3. Mechanical EngineeringSubfield · 88.0 works11×
  4. Mechanics of MaterialsSubfield · 22.8 works7.6×
  5. EngineeringField · 328.5 works5.2×
← 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: 0.06× its world share, 1 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.13× its world share, 3 worksBiochemistry, Geneti…Neuroscience: 0.11× its world share, 1 worksNeuroscienceChemical Engineering: 0.03× its world share, 0 worksChemical EngineeringChemistry: 0.02× its world share, 0 worksChemistryComputer Science: 0.57× its world share, 19 worksComputer ScienceEarth and Planetary Sciences: 1.71× its world share, 11 worksEarth and Planetary …Energy: 0.19× its world share, 1 worksEnergyEngineering: 5.18× its world share, 328 worksEngineeringEnvironmental Science: 0.56× its world share, 12 worksEnvironmental ScienceMaterials Science: 0.49× its world share, 7 worksMaterials ScienceMathematics: 0.20× its world share, 1 worksMathematicsPhysics and Astronomy: 0.59× its world share, 6 worksPhysics and AstronomyHealth Professions: 0.13× its world share, 2 worksHealth ProfessionsMedicine: 0.05× its world share, 4 worksMedicineArts and Humanities: 0.07× its world share, 1 worksArts and HumanitiesBusiness, Management and Accounting: 0.15× its world share, 2 worksBusiness, Management…Decision Sciences: 1.04× its world share, 4 worksDecision SciencesEconomics, Econometrics and Finance: 0.15× its world share, 1 worksEconomics, Econometr…Psychology: 0.75× its world share, 10 worksPsychologySocial Sciences: 0.16× its world share, 9 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Engineering, 5.2×. Every wedge is a field page.

All 21 fields, with their numbers
  1. Engineering5.18×328 works
  2. Earth and Planetary Sciences1.71×11 works
  3. Decision Sciences1.04×4 works
  4. Psychology0.75×10 works
  5. Physics and Astronomy0.59×6 works
  6. Computer Science0.57×19 works
  7. Environmental Science0.56×12 works
  8. Materials Science0.49×7 works
  9. Mathematics0.20×1 works
  10. Energy0.19×1 works
  11. Social Sciences0.16×9 works
  12. Business, Management and Accounting0.15×2 works
  13. Economics, Econometrics and Finance0.15×1 works
  14. Biochemistry, Genetics and Molecular Biology0.13×3 works
  15. Health Professions0.13×2 works
  16. Neuroscience0.11×1 works
  17. Arts and Humanities0.07×1 works
  18. Agricultural and Biological Sciences0.06×1 works
  19. Medicine0.05×4 works
  20. Chemical Engineering0.03×0 works
  21. Chemistry0.02×0 works

Who are the top researchers at Railway Technical Research Institute?

Ranked on the quality score, Nobuyuki Matsumoto, Hiroyuki Fujimoto and Katsuji Tanemoto lead among researchers whose main affiliation is Railway Technical Research Institute.

  1. 1 Nobuyuki Matsumoto Japan · #1,730,740 worldwide 3.6k citations · 190 works
  2. 2 Hiroyuki Fujimoto Japan · #2,803,121 worldwide 9.7k citations · 531 works
  3. 3 Katsuji Tanemoto Japan · #3,036,309 worldwide 664 citations · 20 works
  4. 4 Maki Sogabe Japan · #3,122,858 worldwide 790 citations · 39 works
  5. 5 Hajime Wakui Japan · #3,665,151 worldwide 709 citations · 80 works
  6. 6 Akira Namura Japan · #3,845,042 worldwide 374 citations · 29 works
  7. 7 Katsuyoshi Ikeuchi Japan · #3,894,211 worldwide 342 citations · 18 works
  8. 8 H. Hata #3,930,241 worldwide 358 citations · 28 works
  9. 9 Kazuyuki Handa Japan · #4,035,542 worldwide 527 citations · 40 works
  10. 10 Kazuhide YASHIRO Japan · #4,152,591 worldwide 375 citations · 53 works
All ranked researchers at Railway Technical Research Institute

What are the most cited papers from Railway Technical Research Institute?

The most cited paper from Railway Technical Research Institute is "Melt-processed light rare earth element - Ba - Cu - O" (Masato Murakami, N. Sakai, T. Higuchi et al., 1996), with 606 citations. Next come "Present status and technology of shield tunneling method in Japan" (343) and "Simulation of Nonstationary Random Process" (340).

Most cited papers
#PaperReleasedCitations
1 Melt-processed light rare earth element - Ba - Cu - O Masato Murakami, N. Sakai, T. Higuchi et al. · Superconductor Science and Technology Open access Dec 1996 606
2 Present status and technology of shield tunneling method in Japan Yukinori Koyama · Tunnelling and Underground Space Technology Apr 2003 343
3 Simulation of Nonstationary Random Process Masanobu Shinozuka, Yuichi Sato · Journal of the Engineering Mechanics Division Feb 1967 340
4 Aerodynamic characteristics of train/vehicles under cross winds Minoru Suzuki, Katsuji Tanemoto, Tatsuo Maeda · Journal of Wind Engineering and Industrial Aerodynamics 2003 288
5 A new control strategy for voltage-type PWM rectifiers to realize zero steady-state control error in input current Y. Sato, T. Ishizuka, Kazuyoshi Nezu et al. · IEEE Transactions on Industry Applications 1998 265
All 59 most cited papers, with filters and sorting

Which keywords describe research at Railway Technical Research Institute?

By fractional works in 2022-now, weighted toward what it does more of than the world: High-Speed Trains, Rolling Contact Fatigue, Dynamic Interaction, Ground Vibration, Railway Dynamics, Numerical Simulation, Energy Efficiency and Finite Element Method.

▲ 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-now 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. High-Speed Trains70▲ 255×3 topics
  2. Rolling Contact Fatigue50▲ 200×2 topics
  3. Dynamic Interaction49▲ 183×2 topics
  4. Ground Vibration45▲ 385×1 topic
  5. Railway Dynamics45▲ 385×1 topic
  6. Numerical Simulation37▲ 30×6 topics
  7. Energy Efficiency28▲ 7.2×11 topics
  8. Finite Element Method25▲ 60×3 topics
  9. Failure Analysis24▲ 62×3 topics
  10. Fatigue Analysis24▲ 205×2 topics
  11. Material Properties24▲ 57×2 topics
  12. Structural Analysis24▲ 62×3 topics
  13. Design Optimization23▲ 147×1 topic
  14. Mechanical Engineering23▲ 147×1 topic
  15. Traffic Management22▲ 113×2 topics
  16. Railway Timetabling20▲ 263×1 topic
  17. Train Scheduling20▲ 263×1 topic
  18. Optimization19▲ 9.9×8 topics
  19. Analysis17▲ 45×3 topics
  20. Vehicle Dynamics17▲ 70×2 topics
  21. Railway Bridges14▲ 89×2 topics
  22. Aerodynamics14▲ 44×1 topic
  23. Crosswind14▲ 114×1 topic
  24. Drag Reduction14▲ 71×2 topics
  25. Nonlinear Dynamics12▲ 13×4 topics
  26. Soil Reinforcement12▲ 44×2 topics
  27. Numerical Analysis12▲ 58×2 topics
  28. Fiber Reinforcement12▲ 45×1 topic
  29. Geosynthetics12▲ 56×1 topic
  30. Finite Element Analysis11▲ 12×9 topics
  31. Electrical Contact Materials11▲ 289×1 topic
  32. Finite Element Simulation11▲ 86×2 topics
  33. Pantograph-Catenary Interaction11▲ 289×1 topic
  34. Pipeline10▲ 24×3 topics
  35. Thermal Analysis10▲ 18×6 topics
  36. Design10▲ 14×2 topics
  37. Monitoring10▲ 25×2 topics
  38. Engineering9▲ 47×1 topic
  39. Research9▲ 17×1 topic
  40. Vibration Analysis9▲ 7.7×6 topics

Which research topics does Railway Technical Research Institute publish most on?

By volume in 2022-now: Railway Engineering and Dynamics, Engineering Applied Research, Railway Systems and Energy Efficiency and Aerodynamics and Fluid Dynamics Research.

Railway Engineering and …45Railway Engineering and Dynamics: 45 fractional worksEngineering Applied Rese…23Engineering Applied Research: 23 fractional worksRailway Systems and Ener…20Railway Systems and Energy Efficiency: 20 fractional worksAerodynamics and Fluid Dynamics Research: 14 fractional worksGeotechnical Engineering and Soil Stabilization: 12 fractional worksElectrical Contact Perfo…11Electrical Contact Performance and Analysis: 11 fractional worksCivil and Geotechnical Engineering Research: 9 fractional worksMechanical stress and fatigue analysis: 7 fractional worksGeotechnical Engineering and Underground Structures: 6 fractional worksStructural Health Monitoring Techniques: 6 fractional works
Mechanical EngineeringCivil and Structural EngineeringIndustrial and Manufacturing EngineeringAerospace Engineering2 others

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

  1. 1 Railway Engineering and Dynamics Mechanical Engineering 45 works
  2. 2 Engineering Applied Research Civil and Structural Engineering 23 works
  3. 3 Railway Systems and Energy Efficiency Industrial and Manufacturing Engineering 20 works
  4. 4 Aerodynamics and Fluid Dynamics Research Aerospace Engineering 14 works
  5. 5 Geotechnical Engineering and Soil Stabilization Civil and Structural Engineering 12 works
  6. 6 Electrical Contact Performance and Analysis Mechanical Engineering 11 works
  7. 7 Civil and Geotechnical Engineering Research General Engineering 9 works
  8. 8 Mechanical stress and fatigue analysis Mechanics of Materials 7 works
  9. 9 Geotechnical Engineering and Underground Structures Civil and Structural Engineering 6 works
  10. 10 Structural Health Monitoring Techniques Civil and Structural Engineering 6 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 available59.4%not open40.6%

World: 40% of research is openly available.

with international co-authors5.8%domestic only94.2%

World: 18% is written across borders.

How has Railway Technical Research Institute's research output changed?

Output in 2022-2025 was 33% lower than in 2018-2021.

still counting1990200020102020
grewheldshrank

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

Its share of all research

Growing output can still be a shrinking share: all of science grows. This is Railway Technical Research Institute as a percentage of every work published that year, 0.0028% in 2024.

still counting0.0025%0.0050%0.0075%Railway Technical Research Institute0.0012% in 202519801990200020102020

Fractional works of Railway Technical Research Institute over all fractional works that year. How the balance of science has shifted.

How much of it reaches the world top 10%

Year by year, against all institutions in the same year.

still counting5%10%15%all institutions10.0% in 2025Railway Technical Research Institute1.8% in 2025200020102020

Of each year's output, the share that reached the world's 10% most cited for its field and year. Peak 8.3% in 2013.

Other research institutions in Kokubunji

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Railway Technical Research Institute on Science Explorer

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