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University · Matsuyama · Japan

Ehime University

In research, Ehime University stands highest in Health Sciences (#1,589 of 9,902 worldwide), Medicine (#1,387 of 8,541 worldwide) and Life Sciences (#1,770 of 6,403 worldwide), 2022-now. Relative to its size it is most specialised in Hepatology and Geophysics (Hepatology is 5.8× its share of world research).

ehime-u.ac.jp/englishROR OpenAlex
World rank, 2022-now
#2,435
of 22,385 · #2,543 all time
Rank in Japan
#46
of 924
Research works
21k
▼ 10% vs 2018-21
Citations
347k
16.7 per fractional work
Top-10% rate
5.4%
all institutions 10.0%
vs its own fields
0.65×
1.00× is exactly expected
Open access
41%
world 40%
International
11%
world 18%
Ehime University

What is Ehime University 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
Health SciencesDomain #1,589 of 9,902 6.3%633 #3245
MedicineField #1,387 of 8,541 6.4%598 #2698
Life SciencesDomain #1,770 of 6,403 4.7%393 #2481
Physical SciencesDomain #3,257 of 10,670 3.5%739 #1790
Environmental ScienceField #1,471 of 3,334 3.3%142 #1049
Biochemistry, Genetics and Molecular BiologyField #1,476 of 2,964 4.4%187 #2196
SurgerySubfield #763 of 1,532 7.2%96 #1844
EngineeringField #3,385 of 5,901 3.6%213 #3416
Molecular BiologySubfield #1,158 of 1,880 3.9%119 #1919
Agricultural and Biological SciencesField #2,074 of 3,157 4.4%122 #2415

Each strip is that field's whole ranked pool, with the notch where Ehime University 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. Health Sciences#3,245 #1,589
  2. Medicine#2,698 #1,387
  3. Life Sciences#2,481 #1,770
  4. Physical Sciences#1,790 #3,257
  5. Environmental Science#1,049 #1,471
  6. Biochemistry, Genetics and Molecular Biology#2,196 #1,476
  7. Surgery#1,844 #763
  8. Engineering#3,416 #3,385
  9. Molecular Biology#1,919 #1,158
  10. Agricultural and Biological Sciences#2,415 #2,074
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 Ehime University work in?

In 2022-now, 39% of research at Ehime University is in Physical Sciences, 34% in Health Sciences. Its largest fields are Medicine (32%), Engineering (11%), Biochemistry, Genetics and Molecular Biology (10%). It does 1.6× the world's share of Life Sciences.

Physical Sciences: 830 fractional works · 38.9% of its workEngineering: 238 fractional works · 11.2% of its workBiomedical Engineering: 49 fractional works · 2.3% of its workElectrical and Electronic Engineering: 40 fractional works · 1.9% of its workCivil and Structural Engineering: 33 fractional works · 1.6% of its workMechanical Engineering: 32 fractional works · 1.5% of its workMechanics of Materials: 18 fractional works · 0.8% of its workAerospace Engineering: 16 fractional works · 0.8% of its workControl and Systems Engineering: 10 fractional works · 0.5% of its workOcean Engineering: 9 fractional works · 0.4% of its workBuilding and Construction: 8 fractional works · 0.4% of its workComputational Mechanics: 7 fractional works · 0.4% of its workMedia Technology: 6 fractional works · 0.3% of its workSafety, Risk, Reliability and Quality: 4 fractional works · 0.2% of its workSmaller subfields together: 5 fractional works · 0.2% of its workEnvironmental Science: 162 fractional works · 7.6% of its workEcology: 35 fractional works · 1.6% of its workHealth, Toxicology and Mutagenesis: 24 fractional works · 1.1% of its workGlobal and Planetary Change: 22 fractional works · 1.0% of its workPollution: 18 fractional works · 0.8% of its workManagement, Monitoring, Policy and Law: 14 fractional works · 0.7% of its workNature and Landscape Conservation: 13 fractional works · 0.6% of its workIndustrial and Manufacturing Engineering: 13 fractional works · 0.6% of its workEnvironmental Engineering: 9 fractional works · 0.4% of its workEnvironmental Chemistry: 9 fractional works · 0.4% of its workWater Science and Technology: 5 fractional works · 0.3% of its workMaterials Science: 119 fractional works · 5.6% of its workMaterials Chemistry: 63 fractional works · 3.0% of its workElectronic, Optical and Magnetic Materials: 25 fractional works · 1.2% of its workBiomaterials: 13 fractional works · 0.6% of its workCeramics and Composites: 7 fractional works · 0.3% of its workPolymers and Plastics: 6 fractional works · 0.3% of its workSmaller subfields together: 5 fractional works · 0.2% of its workComputer Science: 82 fractional works · 3.8% of its workArtificial Intelligence: 32 fractional works · 1.5% of its workComputer Vision and Pattern Recognition: 16 fractional works · 0.7% of its workInformation Systems: 7 fractional works · 0.3% of its workComputer Networks and Communications: 7 fractional works · 0.3% of its workComputational Theory and Mathematics: 6 fractional works · 0.3% of its workSmaller subfields together: 13 fractional works · 0.6% of its workEarth and Planetary Sciences: 73 fractional works · 3.4% of its workGeophysics: 34 fractional works · 1.6% of its workOceanography: 18 fractional works · 0.8% of its workAtmospheric Science: 10 fractional works · 0.5% of its workPaleontology: 6 fractional works · 0.3% of its workSmaller subfields together: 5 fractional works · 0.2% of its workChemistry: 58 fractional works · 2.7% of its workOrganic Chemistry: 33 fractional works · 1.5% of its workSpectroscopy: 11 fractional works · 0.5% of its workInorganic Chemistry: 7 fractional works · 0.3% of its workSmaller subfields together: 7 fractional works · 0.3% of its workPhysics and Astronomy: 56 fractional works · 2.6% of its workAstronomy and Astrophysics: 21 fractional works · 1.0% of its workAtomic and Molecular Physics, and Optics: 17 fractional works · 0.8% of its workCondensed Matter Physics: 6 fractional works · 0.3% of its workSmaller subfields together: 12 fractional works · 0.5% of its workMathematics: 27 fractional works · 1.2% of its workMathematical Physics: 8 fractional works · 0.4% of its workApplied Mathematics: 8 fractional works · 0.4% of its workSmaller subfields together: 10 fractional works · 0.5% of its workEnergy: 9 fractional works · 0.4% of its workRenewable Energy, Sustainability and the Environment: 9 fractional works · 0.4% of its workChemical Engineering: 7 fractional works · 0.3% of its workCatalysis: 5 fractional works · 0.2% of its workSmaller subfields together: 3 fractional works · 0.1% of its workHealth Sciences: 727 fractional works · 34.1% of its workMedicine: 685 fractional works · 32.2% of its workSurgery: 112 fractional works · 5.3% of its workPulmonary and Respiratory Medicine: 64 fractional works · 3.0% of its workCardiology and Cardiovascular Medicine: 60 fractional works · 2.8% of its workOncology: 47 fractional works · 2.2% of its workEpidemiology: 44 fractional works · 2.1% of its workPublic Health, Environmental and Occupational Health: 35 fractional works · 1.7% of its workPhysiology: 34 fractional works · 1.6% of its workRadiology, Nuclear Medicine and Imaging: 33 fractional works · 1.6% of its workRheumatology: 25 fractional works · 1.2% of its workHepatology: 24 fractional works · 1.1% of its workNeurology: 20 fractional works · 0.9% of its workEndocrinology, Diabetes and Metabolism: 19 fractional works · 0.9% of its workPathology and Forensic Medicine: 18 fractional works · 0.8% of its workPsychiatry and Mental health: 13 fractional works · 0.6% of its workDermatology: 11 fractional works · 0.5% of its workInfectious Diseases: 11 fractional works · 0.5% of its workHematology: 11 fractional works · 0.5% of its workGenetics: 10 fractional works · 0.5% of its workPharmacology: 10 fractional works · 0.5% of its workPediatrics, Perinatology and Child Health: 10 fractional works · 0.4% of its workObstetrics and Gynecology: 9 fractional works · 0.4% of its workGastroenterology: 7 fractional works · 0.3% of its workOtorhinolaryngology: 6 fractional works · 0.3% of its workNephrology: 5 fractional works · 0.2% of its workOphthalmology: 5 fractional works · 0.2% of its workSmaller subfields together: 41 fractional works · 1.9% of its workHealth Professions: 21 fractional works · 1.0% of its workGeneral Health Professions: 7 fractional works · 0.3% of its workSpeech and Hearing: 4 fractional works · 0.2% of its workSmaller subfields together: 10 fractional works · 0.5% of its workNursing: 14 fractional works · 0.7% of its workNutrition and Dietetics: 13 fractional works · 0.6% of its workSmaller subfields together: 1 fractional works · 0.0% of its workDentistry: 5 fractional works · 0.2% of its workVeterinary: 1 fractional works · 0.1% of its workLife Sciences: 447 fractional works · 21.0% of its workBiochemistry, Genetics and Molecular Biology: 216 fractional works · 10.1% of its workMolecular Biology: 136 fractional works · 6.4% of its workGenetics: 22 fractional works · 1.0% of its workCancer Research: 15 fractional works · 0.7% of its workCell Biology: 15 fractional works · 0.7% of its workBiotechnology: 6 fractional works · 0.3% of its workClinical Biochemistry: 5 fractional works · 0.2% of its workBiochemistry: 5 fractional works · 0.2% of its workSmaller subfields together: 12 fractional works · 0.6% of its workAgricultural and Biological Sciences: 138 fractional works · 6.5% of its workPlant Science: 67 fractional works · 3.1% of its workEcology, Evolution, Behavior and Systematics: 23 fractional works · 1.1% of its workInsect Science: 14 fractional works · 0.7% of its workFood Science: 8 fractional works · 0.4% of its workAquatic Science: 7 fractional works · 0.3% of its workSoil Science: 7 fractional works · 0.3% of its workSmaller subfields together: 13 fractional works · 0.6% of its workNeuroscience: 46 fractional works · 2.1% of its workCellular and Molecular Neuroscience: 14 fractional works · 0.6% of its workCognitive Neuroscience: 11 fractional works · 0.5% of its workNeurology: 11 fractional works · 0.5% of its workSmaller subfields together: 10 fractional works · 0.5% of its workImmunology and Microbiology: 40 fractional works · 1.9% of its workImmunology: 33 fractional works · 1.5% of its workSmaller subfields together: 8 fractional works · 0.4% of its workPharmacology, Toxicology and Pharmaceutics: 7 fractional works · 0.3% of its workPharmacology: 5 fractional works · 0.2% of its workSmaller subfields together: 2 fractional works · 0.1% of its workSocial Sciences: 128 fractional works · 6.0% of its workSocial Sciences: 64 fractional works · 3.0% of its workSociology and Political Science: 25 fractional works · 1.2% of its workEducation: 10 fractional works · 0.5% of its workTransportation: 7 fractional works · 0.3% of its workCultural Studies: 5 fractional works · 0.2% of its workPolitical Science and International Relations: 5 fractional works · 0.2% of its workSmaller subfields together: 12 fractional works · 0.6% of its workPsychology: 29 fractional works · 1.4% of its workClinical Psychology: 11 fractional works · 0.5% of its workSocial Psychology: 7 fractional works · 0.3% of its workExperimental and Cognitive Psychology: 6 fractional works · 0.3% of its workSmaller subfields together: 5 fractional works · 0.2% of its workArts and Humanities: 11 fractional works · 0.5% of its workBusiness, Management and Accounting: 11 fractional works · 0.5% of its workEconomics, Econometrics and Finance: 9 fractional works · 0.4% of its workEconomics and Econometrics: 4 fractional works · 0.2% of its workSmaller subfields together: 4 fractional works · 0.2% of its workDecision Sciences: 4 fractional works · 0.2% of its workALL ITS WORKEhime University2,132fractional works, 2022-now
Life Sciences21%Physical Sciences39%Health Sciences34%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 26 fields, with their numbers
    1. Engineering23811.2%
    2. Environmental Science1627.6%
    3. Materials Science1195.6%
    4. Computer Science823.8%
    5. Earth and Planetary Sciences733.4%
    6. Chemistry582.7%
    7. Physics and Astronomy562.6%
    8. Mathematics271.2%
    9. Energy90.4%
    10. Chemical Engineering70.3%
    1. Medicine68532.2%
    2. Health Professions211.0%
    3. Nursing140.7%
    4. Dentistry50.2%
    5. Veterinary10.1%
    1. Biochemistry, Genetics and Molecular Biology21610.1%
    2. Agricultural and Biological Sciences1386.5%
    3. Neuroscience462.1%
    4. Immunology and Microbiology401.9%
    5. Pharmacology, Toxicology and Pharmaceutics70.3%
    1. Social Sciences643.0%
    2. Psychology291.4%
    3. Arts and Humanities110.5%
    4. Business, Management and Accounting110.5%
    5. Economics, Econometrics and Finance90.4%
    6. Decision Sciences40.2%
All of science, and how each field's share has moved since 1950: the Science domain explorer

What does Ehime University specialise in?

Where its research is concentrated relative to its size: Hepatology takes 5.8× the share of its output that it takes of world research.

  1. HepatologySubfield · 23.6 works5.8×
  2. GeophysicsSubfield · 33.9 works4.5×
← 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: 1.36× its world share, 138 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 1.90× its world share, 216 worksBiochemistry, Geneti…Immunology and Microbiology: 1.89× its world share, 40 worksImmunology and Micro…Neuroscience: 1.32× its world share, 46 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 0.96× its world share, 7 worksPharmacology, Toxico…Chemical Engineering: 1.00× its world share, 8 worksChemical EngineeringChemistry: 1.73× its world share, 58 worksChemistryComputer Science: 0.49× its world share, 82 worksComputer ScienceEarth and Planetary Sciences: 2.17× its world share, 73 worksEarth and Planetary …Energy: 0.45× its world share, 9 worksEnergyEngineering: 0.74× its world share, 238 worksEngineeringEnvironmental Science: 1.53× its world share, 162 worksEnvironmental ScienceMaterials Science: 1.60× its world share, 119 worksMaterials ScienceMathematics: 1.06× its world share, 27 worksMathematicsPhysics and Astronomy: 1.17× its world share, 56 worksPhysics and AstronomyDentistry: 0.44× its world share, 5 worksDentistryHealth Professions: 0.38× its world share, 21 worksHealth ProfessionsMedicine: 1.67× its world share, 686 worksMedicineNursing: 1.34× its world share, 14 worksNursingVeterinary: 0.50× its world share, 1 worksVeterinaryArts and Humanities: 0.18× its world share, 11 worksArts and HumanitiesBusiness, Management and Accounting: 0.16× its world share, 11 worksBusiness, Management…Decision Sciences: 0.20× its world share, 4 worksDecision SciencesEconomics, Econometrics and Finance: 0.19× its world share, 9 worksEconomics, Econometr…Psychology: 0.44× its world share, 29 worksPsychologySocial Sciences: 0.24× its world share, 64 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Earth and Planetary Sciences, 2.2×. Every wedge is a field page.

All 26 fields, with their numbers
  1. Earth and Planetary Sciences2.17×73 works
  2. Biochemistry, Genetics and Molecular Biology1.90×216 works
  3. Immunology and Microbiology1.89×40 works
  4. Chemistry1.73×58 works
  5. Medicine1.67×686 works
  6. Materials Science1.60×119 works
  7. Environmental Science1.53×162 works
  8. Agricultural and Biological Sciences1.36×138 works
  9. Nursing1.34×14 works
  10. Neuroscience1.32×46 works
  11. Physics and Astronomy1.17×56 works
  12. Mathematics1.06×27 works
  13. Chemical Engineering1.00×8 works
  14. Pharmacology, Toxicology and Pharmaceutics0.96×7 works
  15. Engineering0.74×238 works
  16. Veterinary0.50×1 works
  17. Computer Science0.49×82 works
  18. Energy0.45×9 works
  19. Dentistry0.44×5 works
  20. Psychology0.44×29 works
  21. Health Professions0.38×21 works
  22. Social Sciences0.24×64 works
  23. Decision Sciences0.20×4 works
  24. Economics, Econometrics and Finance0.19×9 works
  25. Arts and Humanities0.18×11 works
  26. Business, Management and Accounting0.16×11 works

Who are the top researchers at Ehime University?

Ranked on the quality score, Kwadwo Ansong Asante, Takeshi Imamura and Tohru Nagao lead among researchers whose main affiliation is Ehime University.

  1. 1 Kwadwo Ansong Asante Japan · #263,635 worldwide 2.6k citations · 39 works
  2. 2 Takeshi Imamura Japan · #281,519 worldwide 22k citations · 349 works
  3. 3 Tohru Nagao Japan · #338,258 worldwide 14k citations · 389 works
  4. 4 Manabu Ishida Japan · #346,106 worldwide 294 citations · 17 works
  5. 5 Shinsuke Tanabe Japan · #410,957 worldwide 45k citations · 848 works
  6. 6 Rumi Tanoue Japan · #528,150 worldwide 1.6k citations · 39 works
  7. 7 Shigeki Higashiyama Japan · #615,969 worldwide 19k citations · 349 works
  8. 8 Annamalai Subramanian Japan · #623,536 worldwide 5.7k citations · 77 works
  9. 9 Kazuki Inoue Japan · #688,290 worldwide 2.7k citations · 48 works
  10. 10 Joon-Woo Kim Japan · #705,101 worldwide 2.5k citations · 33 works
All ranked researchers at Ehime University

What are the most cited papers from Ehime University?

The most cited paper from Ehime University is "PsychoPy2: Experiments in behavior made easy" (Jonathan W. Peirce, Jeremy Gray, Sol Simpson et al., 2019), with 5,673 citations. Next come "Phylogenomics resolves the timing and pattern of insect evolution" (2,883) and "An overview of adakite, tonalite–trondhjemite–granodiorite (TTG), and sanukitoid: relationships and some implications for crustal evolution" (2,785).

Most cited papers
#PaperReleasedCitations
1 PsychoPy2: Experiments in behavior made easy Jonathan W. Peirce, Jeremy Gray, Sol Simpson et al. · Behavior Research Methods Open access Feb 2019 5,673
2 Phylogenomics resolves the timing and pattern of insect evolution Bernhard Y. Misof et al. · Science 101 authors 6 Nov 2014 2,883
3 An overview of adakite, tonalite–trondhjemite–granodiorite (TTG), and sanukitoid: relationships and some implications for crustal evolution Hervé Martin, Robert H. Smithies, Robert Paul Rapp et al. · Lithos 11 Dec 2004 2,785
4 Development of Lupus-like Autoimmune Diseases by Disruption of the PD-1 Gene Encoding an ITIM Motif-Carrying Immunoreceptor Hiroyuki Nishimura, Masato Nose, Hiroshi Hiai et al. · Immunity Open access Aug 1999 2,771
5 Guidelines for the use and interpretation of assays for monitoring autophagy (4th edition) 1 Daniel J. Klionsky et al. · Autophagy Open access2,930 authors 2 Jan 2021 2,743
All 60 most cited papers, with filters and sorting

Which keywords describe research at Ehime University?

By fractional works in 2022-now, weighted toward what it does more of than the world: Epidemiology, Inflammation, Oxidative Stress, Superconductivity, Treatment, Metabolic Syndrome, Plate Tectonics and Climate Change.

▲ 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. Epidemiology117▲ 1.38×118 topics
  2. Inflammation91▲ 2.0×78 topics
  3. Climate Change68▲ 1.18×70 topics
  4. Oxidative Stress59▲ 1.68×58 topics
  5. Treatment50▲ 1.95×42 topics
  6. Cancer46▲ 1.59×51 topics
  7. Metabolic Syndrome43▲ 2.5×22 topics
  8. Cardiovascular Disease42▲ 1.74×35 topics
  9. Diagnosis41▲ 2.1×35 topics
  10. Environmental Impact40◆ 1.11×44 topics
  11. Chemotherapy39▲ 2.6×24 topics
  12. Obesity34▲ 2.1×21 topics
  13. Immunotherapy34▲ 2.2×17 topics
  14. Biomedical Applications31▲ 1.23×29 topics
  15. Biomarkers30▲ 2.0×15 topics
  16. Management29▲ 1.72×29 topics
  17. Insulin Resistance28▲ 2.9×9 topics
  18. Clinical Practice Guidelines27▲ 2.3×13 topics
  19. Superconductivity27▲ 7.3×9 topics
  20. Aging26▲ 2.2×15 topics
  21. Hepatocellular Carcinoma25▲ 5.7×3 topics
  22. Plate Tectonics25▲ 7.7×3 topics
  23. Invasive Species24▲ 2.6×18 topics
  24. Prognostic Factors24▲ 2.6×14 topics
  25. Genetic Mutations24▲ 2.5×22 topics
  26. Tumor Microenvironment23▲ 2.4×8 topics
  27. Heart Failure22▲ 2.4×13 topics
  28. Cytokines20▲ 3.2×8 topics
  29. Echocardiography20▲ 3.3×8 topics
  30. Neoadjuvant Therapy19▲ 3.8×5 topics
  31. Self-Assembly19▲ 2.8×11 topics
  32. Tomography18▲ 4.7×5 topics
  33. Hepatic Steatosis18▲ 5.7×2 topics
  34. Myocardial Infarction17▲ 3.4×6 topics
  35. Revision Surgery15▲ 5.7×2 topics
  36. Total Hip Replacement15▲ 5.7×2 topics
  37. Cardiac Imaging15▲ 5.7×3 topics
  38. Crystal Structure Prediction13▲ 13×1 topic
  39. Mantle Dynamics13▲ 13×1 topic
  40. Bioaccumulation13▲ 6.7×3 topics

Which research topics does Ehime University publish most on?

By volume in 2022-now: High-pressure geophysics and materials, Liver Disease Diagnosis and Treatment, Geological and Geochemical Analysis and Pancreatic and Hepatic Oncology Research.

High-pressure geophysics…13High-pressure geophysics and materials: 13 fractional worksLiver Disease Diagnosis …13Liver Disease Diagnosis and Treatment: 13 fractional worksGeological and Geochemical Analysis: 11 fractional worksPancreatic and Hepatic Oncology Research: 11 fractional worksLandslides and related hazards: 9 fractional worksHepatocellular Carcinoma Treatment and Prognosis: 9 fractional worksNutrition and Health in Aging: 9 fractional worksCardiac Imaging and Diag…8Cardiac Imaging and Diagnostics: 8 fractional worksCardiovascular Function and Risk Factors: 8 fractional worksPorphyrin and Phthalocyanine Chemistry: 8 fractional works
GeophysicsEpidemiologyOncologyManagement, Monitoring, Policy and Law5 others

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

  1. 1 High-pressure geophysics and materials Geophysics 13 works
  2. 2 Liver Disease Diagnosis and Treatment Epidemiology 13 works
  3. 3 Geological and Geochemical Analysis Geophysics 11 works
  4. 4 Pancreatic and Hepatic Oncology Research Oncology 11 works
  5. 5 Landslides and related hazards Management, Monitoring, Policy and Law 9 works
  6. 6 Hepatocellular Carcinoma Treatment and Prognosis Hepatology 9 works
  7. 7 Nutrition and Health in Aging Physiology 9 works
  8. 8 Cardiac Imaging and Diagnostics Radiology, Nuclear Medicine and Imaging 8 works
  9. 9 Cardiovascular Function and Risk Factors Cardiology and Cardiovascular Medicine 8 works
  10. 10 Porphyrin and Phthalocyanine Chemistry Materials Chemistry 8 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 available41.1%not open58.9%

World: 40% of research is openly available.

with international co-authors11.4%domestic only88.6%

World: 18% is written across borders.

How has Ehime University's research output changed?

Output in 2022-2025 was 10% 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 Ehime University as a percentage of every work published that year, 0.0086% in 2024.

still counting0.020%0.040%0.060%Ehime University0.0080% in 202519801990200020102020

Fractional works of Ehime University 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 2025Ehime University6.3% in 2025200020102020

Of each year's output, the share that reached the world's 10% most cited for its field and year. Peak 6.4% in 2008.

Other research institutions in Matsuyama

All research institutions in Matsuyama

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Ehime University on Science Explorer

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