Science Explorer Interactive view Map
University · Nagaoka · Japan

Nagaoka University of Technology

In research, Nagaoka University of Technology stands highest in Physical Sciences (#5,347 of 12,888 worldwide), Engineering (#3,643 of 6,636 worldwide) and Materials Science (#1,998 of 2,468 worldwide), 2022–2025. Relative to its size it is most specialised in Biomaterials and Materials Science — Biomaterials is 7.3× its share of world research.

nagaokaut.ac.jp/eROR OpenAlex
World rank, 2022–2025
#9,553
of 28,054 · #2,476 all time
Rank in Japan
#242
of 1,070
Research works
9.5k
▼ 17% vs 2013–17
Citations
137k
14.4 per fractional work
Top-10% rate
5.2%
record average 16.5%
Open access
41%
world 28%

What is Nagaoka University of Technology 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 #5,347 of 12,888 5.0%744 #1609
EngineeringField #3,643 of 6,636 4.8%417 #1448
Materials ScienceField #1,998 of 2,468 6.7%128 #704
Life SciencesDomain #7,252 of 7,800 8.4%72 #8086
Mechanical EngineeringSubfield #1,267 of 1,351 6.2%64 #698
Electrical and Electronic EngineeringSubfield #2,220 of 2,318 1.6%117 #1265

Each strip is that field’s whole ranked pool, with the notch where Nagaoka University of Technology 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).

Which of those standings moved

The same fields on both windows: where it stood over the whole record, and where it stands in 2022–2025. The distance is the story, and it is the one thing the two rank columns above cannot show.

  1. Physical Sciences#1,609 #5,347
  2. Engineering#1,448 #3,643
  3. Materials Science#704 #1,998
  4. Life Sciences#8,086 #7,252
  5. Mechanical Engineering#698 #1,267
  6. Electrical and Electronic Engineering#1,265 #2,220
all time2022–2025, better2022–2025, worse

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

What does Nagaoka University of Technology specialise in?

Where its research is concentrated relative to its size: Biomaterials takes 7.3× the share of its output that it takes of world research.

  1. BiomaterialsSubfield · 27.8 works7.3×
  2. Materials ScienceField · 128.2 works4.1×
← 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: 0.36× its world share, 15 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.80× its world share, 38 worksBiochemistry, Geneti…Immunology and Microbiology: 0.04× its world share, 0 worksImmunology and Micro…Neuroscience: 1.12× its world share, 16 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 0.68× its world share, 2 worksPharmacology, Toxico…Chemical Engineering: 3.82× its world share, 12 worksChemical EngineeringChemistry: 2.21× its world share, 31 worksChemistryComputer Science: 0.77× its world share, 54 worksComputer ScienceEarth and Planetary Sciences: 0.45× its world share, 6 worksEarth and Planetary …Energy: 1.61× its world share, 13 worksEnergyEngineering: 3.12× its world share, 417 worksEngineeringEnvironmental Science: 1.08× its world share, 48 worksEnvironmental ScienceMaterials Science: 4.12× its world share, 128 worksMaterials ScienceMathematics: 0.21× its world share, 2 worksMathematicsPhysics and Astronomy: 1.66× its world share, 33 worksPhysics and AstronomyDentistry: 0.49× its world share, 2 worksDentistryHealth Professions: 0.18× its world share, 4 worksHealth ProfessionsMedicine: 0.18× its world share, 31 worksMedicineNursing: 0.14× its world share, 1 worksNursingVeterinary: 0.09× its world share, 0 worksVeterinaryArts and Humanities: 0.09× its world share, 2 worksArts and HumanitiesBusiness, Management and Accounting: 0.15× its world share, 4 worksBusiness, Management…Decision Sciences: 0.72× its world share, 6 worksDecision SciencesEconomics, Econometrics and Finance: 0.09× its world share, 2 worksEconomics, Econometr…Psychology: 0.29× its world share, 8 worksPsychologySocial Sciences: 0.13× its world share, 15 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Materials Science, 4.1×. Every wedge is a field page.

Who are the top researchers at Nagaoka University of Technology?

Ranked on the composite score, Isao Takahashi, S. Kamado and Kazumasa Matusita lead among researchers whose main affiliation is Nagaoka University of Technology.

  1. 1 Isao Takahashi Japan · #8,921 worldwide 1.8k citations · 170 works
  2. 2 S. Kamado Japan · #93,765 worldwide 962 citations · 105 works
  3. 3 Kazumasa Matusita Japan · #102,270 worldwide 268 citations · 38 works
  4. 4 Nobuhiro Harada Japan · #116,712 worldwide 274 citations · 91 works
  5. 5 Hiroshi Nishiyama Japan · #126,746 worldwide 248 citations · 29 works
  6. 6 Yasunobu Inoue Japan · #140,438 worldwide 351 citations · 34 works
  7. 7 Yasuhiko Benino Japan · #160,820 worldwide 221 citations · 36 works
  8. 8 Kiyoshi Ohishi Japan · #171,449 worldwide 583 citations · 163 works
  9. 9 Kazunori Sato Japan · #192,043 worldwide 411 citations · 79 works
  10. 10 Takayuki Komatsu Japan · #200,876 worldwide 1k citations · 166 works
All ranked researchers at Nagaoka University of Technology

Which keywords describe research at Nagaoka University of Technology?

By fractional works in 2022–2025, weighted toward what it does more of than the world: Power Electronics, Mechanical Properties, Biomedical Applications, Renewable Energy Integration, Nanoparticles, Nanocomposites, Microstructure and Electric Vehicle Charging.

▲ 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. Mechanical Properties48▲ 5.5×30 topics
  2. Biomedical Applications46▲ 4.3×32 topics
  3. Power Electronics46▲ 15×8 topics
  4. Nanoparticles43▲ 3.9×33 topics
  5. Nanocomposites35▲ 4.8×20 topics
  6. Renewable Energy Integration32▲ 11×4 topics
  7. Microstructure26▲ 5.5×15 topics
  8. Tissue Engineering22▲ 4.1×11 topics
  9. Nanomaterials22▲ 2.3×19 topics
  10. Graphene21▲ 3.4×11 topics
  11. Catalysis20▲ 3.3×21 topics
  12. Carbon Nanotubes18▲ 6.0×8 topics
  13. Electric Vehicle Charging18▲ 23×2 topics
  14. Thermal Analysis15▲ 13×6 topics
  15. Implantable Devices14▲ 31×2 topics
  16. Finite Element Method14▲ 16×6 topics
  17. Model Predictive Control14▲ 5.8×4 topics
  18. Biomaterials13▲ 6.4×6 topics
  19. Additive Manufacturing13▲ 4.7×7 topics
  20. Fault Tolerance13▲ 9.1×3 topics
  21. Sintering13▲ 11×5 topics
  22. Photovoltaic Systems12▲ 16×2 topics
  23. Nanocrystals12▲ 5.0×5 topics
  24. Ionic Liquids12▲ 4.9×9 topics
  25. Adaptive Control12▲ 10×7 topics
  26. Multilevel Converters12▲ 24×1 topic
  27. Voltage Source Inverters12▲ 24×1 topic
  28. Processing Techniques12▲ 15×2 topics
  29. DC-DC Converters12▲ 23×1 topic
  30. High-Frequency Power Conversion12▲ 23×1 topic
  31. Materials12▲ 5.5×6 topics
  32. Metal Matrix Composites11▲ 17×2 topics
  33. Efficiency Optimization11▲ 26×2 topics
  34. Friction Stir Processing11▲ 18×1 topic
  35. Reinforcement11▲ 17×1 topic
  36. Adsorption11▲ 6.0×7 topics
  37. Wireless Power Transfer11▲ 13×2 topics
  38. Material Properties11▲ 12×2 topics
  39. Fluid Dynamics10▲ 8.1×4 topics
  40. Polymerization10▲ 12×6 topics

Which research topics does Nagaoka University of Technology publish most on?

By volume in 2022–2025: Multilevel Inverters and Converters, Advanced DC-DC Converters, Aluminum Alloys Composites Properties and Electric Motor Design and Analysis.

Multilevel Inverters and…12Multilevel Inverters and Converters: 12 fractional worksAdvanced DC-DC Converters12Advanced DC-DC Converters: 12 fractional worksAluminum Alloys Composit…11Aluminum Alloys Composites Properties: 11 fractional worksElectric Motor Design an…10Electric Motor Design and Analysis: 10 fractional worksMagnesium Alloys: Properties and Applications: 8 fractional worksMicrogrid Control and Optimization: 8 fractional worksMetal and Thin Film Mech…7Metal and Thin Film Mechanics: 7 fractional worksBone Tissue Engineering Materials: 7 fractional worksTopology Optimization in Engineering: 6 fractional worksWireless Power Transfer …6Wireless Power Transfer Systems: 6 fractional works
Electrical and Electronic EngineeringMechanical EngineeringBiomaterialsControl and Systems Engineering3 others

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

  1. 1 Multilevel Inverters and Converters Electrical and Electronic Engineering 12 works
  2. 2 Advanced DC-DC Converters Electrical and Electronic Engineering 12 works
  3. 3 Aluminum Alloys Composites Properties Mechanical Engineering 11 works
  4. 4 Electric Motor Design and Analysis Electrical and Electronic Engineering 10 works
  5. 5 Magnesium Alloys: Properties and Applications Biomaterials 8 works
  6. 6 Microgrid Control and Optimization Control and Systems Engineering 8 works
  7. 7 Metal and Thin Film Mechanics Mechanics of Materials 7 works
  8. 8 Bone Tissue Engineering Materials Biomedical Engineering 7 works
  9. 9 Topology Optimization in Engineering Civil and Structural Engineering 6 works
  10. 10 Wireless Power Transfer Systems Electrical and Electronic 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 available40.6%not open59.4%

World: 28% of research is openly available.

with international co-authors11.5%domestic only88.5%

World: 19% is written across borders.

How has Nagaoka University of Technology's research output changed?

Output in 2018–2022 was 17% 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 Nagaoka

All research institutions in Nagaoka

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.