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Company · Saint-Denis · France

Société Nationale des Chemins de Fer Français (France)

In research, Société Nationale des Chemins de Fer Français (France) stands highest in Physical Sciences (#10,147 of 12,888 worldwide) and Engineering (#5,474 of 6,636 worldwide), 2022–2025. Relative to its size it is most specialised in Mechanical Engineering — Mechanical Engineering is 5.1× its share of world research.

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World rank, 2022–2025
#15,848
of 28,054 · #18,444 all time
Rank in France
#679
of 1,422
Research works
984
▲ 40% vs 2013–17
Citations
7.4k
7.5 per fractional work
Top-10% rate
6.7%
record average 16.5%
Open access
37%
world 28%

What is Société Nationale des Chemins de Fer Français (France) 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 #10,147 of 12,888 6.6%144 #11886
EngineeringField #5,474 of 6,636 4.3%105 #3815

Each strip is that field’s whole ranked pool, with the notch where Société Nationale des Chemins de Fer Français (France) 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 Société Nationale des Chemins de Fer Français (France) specialise in?

Where its research is concentrated relative to its size: Mechanical Engineering takes 5.1× the share of its output that it takes of world research.

  1. Mechanical EngineeringSubfield · 21.3 works5.1×
← 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: 0.29× its world share, 3 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.13× its world share, 2 worksBiochemistry, Geneti…Immunology and Microbiology: 0.19× its world share, 0 worksImmunology and Micro…Neuroscience: 0.47× its world share, 2 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 0.14× its world share, 0 worksPharmacology, Toxico…Chemical Engineering: 0.56× its world share, 0 worksChemical EngineeringChemistry: 0.23× its world share, 1 worksChemistryComputer Science: 1.03× its world share, 18 worksComputer ScienceEarth and Planetary Sciences: 1.41× its world share, 5 worksEarth and Planetary …Energy: 0.16× its world share, 0 worksEnergyEngineering: 3.06× its world share, 105 worksEngineeringEnvironmental Science: 0.82× its world share, 9 worksEnvironmental ScienceMaterials Science: 0.39× its world share, 3 worksMaterials ScienceMathematics: 0.20× its world share, 1 worksMathematicsPhysics and Astronomy: 0.20× its world share, 1 worksPhysics and AstronomyHealth Professions: 3.29× its world share, 20 worksHealth ProfessionsMedicine: 0.26× its world share, 12 worksMedicineNursing: 0.15× its world share, 0 worksNursingVeterinary: 0.54× its world share, 0 worksVeterinaryArts and Humanities: 0.84× its world share, 6 worksArts and HumanitiesBusiness, Management and Accounting: 0.77× its world share, 6 worksBusiness, Management…Decision Sciences: 1.06× its world share, 2 worksDecision SciencesEconomics, Econometrics and Finance: 0.86× its world share, 4 worksEconomics, Econometr…Psychology: 1.15× its world share, 8 worksPsychologySocial Sciences: 0.69× its world share, 20 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Health Professions, 3.3×. Every wedge is a field page.

Who are the top researchers at Société Nationale des Chemins de Fer Français (France)?

Ranked on the composite score, Julien Pouget, Michel Hautefeuille and Pierre-Étienne Gautier lead among researchers whose main affiliation is Société Nationale des Chemins de Fer Français (France).

  1. 1 Julien Pouget France · #533,091 worldwide 32 citations · 23 works
  2. 2 Michel Hautefeuille France · #779,322 worldwide 0 citations · 16 works
  3. 3 Pierre-Étienne Gautier France · #993,514 worldwide 32 citations · 29 works
  4. 4 Franck Poisson France · #1,068,223 worldwide 25 citations · 19 works
  5. 5 Gilles Saussine France · #1,106,905 worldwide 29 citations · 16 works
  6. 6 Christine Fünfschilling France · #1,114,872 worldwide 19 citations · 18 works
  7. 7 Marc Antoni France · #1,142,534 worldwide 23 citations · 16 works
All ranked researchers at Société Nationale des Chemins de Fer Français (France)

Which keywords describe research at Société Nationale des Chemins de Fer Français (France)?

By fractional works in 2022–2025, weighted toward what it does more of than the world: Energy Efficiency, High-Speed Trains, Traffic Management, Railway Timetabling, Train Scheduling, Dynamic Interaction, Rolling Contact Fatigue and Ground Vibration.

▲ 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. Energy Efficiency18▲ 8.3×11 topics
  2. High-Speed Trains15▲ 97×3 topics
  3. Sustainability13▲ 2.3×17 topics
  4. Deep Learning12▲ 1.50×32 topics
  5. Traffic Management12▲ 110×2 topics
  6. Railway Timetabling11▲ 291×1 topic
  7. Train Scheduling11▲ 291×1 topic
  8. Dynamic Interaction11▲ 72×2 topics
  9. Rolling Contact Fatigue11▲ 80×2 topics
  10. Ground Vibration10▲ 164×1 topic
  11. Railway Dynamics10▲ 164×1 topic
  12. Public Health8▲ 2.4×7 topics
  13. Sustainable Development8▲ 2.1×11 topics
  14. Mental Health7▲ 2.2×5 topics
  15. Social Determinants of Health6▲ 11×3 topics
  16. Territorial Governance5▲ 18×3 topics
  17. Healthcare Legislation5▲ 37×1 topic
  18. Palliative Care5▲ 14×2 topics
  19. Patient Rights5▲ 30×1 topic
  20. Community Engagement5▲ 6.5×2 topics
  21. Local Development5▲ 19×2 topics
  22. Public Policy5▲ 4.4×4 topics
  23. Electric Vehicles5▲ 7.3×3 topics
  24. Primary Care5▲ 5.7×3 topics
  25. Cyber-Physical Systems5▲ 7.9×4 topics
  26. Healthcare Policy5▲ 21×1 topic
  27. Inequalities5▲ 57×1 topic
  28. Lithium-ion Batteries4▲ 4.6×4 topics
  29. Social Justice4▲ 3.3×3 topics
  30. Defect Detection4▲ 13×3 topics
  31. Risk Perception4▲ 6.3×3 topics
  32. Citizen Participation4▲ 13×1 topic
  33. Environmental Participation4▲ 21×1 topic
  34. Supply Chain4▲ 7.5×4 topics
  35. Driver Behavior3▲ 18×2 topics
  36. Crack Detection3▲ 18×1 topic
  37. Occupational Safety3▲ 14×2 topics
  38. Pavement3▲ 18×1 topic
  39. Electrical Contact Materials3▲ 142×1 topic
  40. Pantograph-Catenary Interaction3▲ 142×1 topic

Which research topics does Société Nationale des Chemins de Fer Français (France) publish most on?

By volume in 2022–2025: Railway Systems and Energy Efficiency, Railway Engineering and Dynamics, Health, Medicine and Society and Healthcare Systems and Practices.

Railway Systems and Ener…11Railway Systems and Energy Efficiency: 11 fractional worksRailway Engineering and …10Railway Engineering and Dynamics: 10 fractional worksHealth, Medicine and Society: 5 fractional worksHealthcare Systems and Practices: 5 fractional worksFrench Urban and Social Studies: 4 fractional worksInfrastructure Maintenan…3Infrastructure Maintenance and Monitoring: 3 fractional worksElectrical Contact Performance and Analysis: 3 fractional worksMechanical stress and fatigue analysis: 2 fractional worksLaser Design and Applications: 2 fractional worksNoise Effects and Management: 2 fractional works
Industrial and Manufacturing EngineeringMechanical EngineeringGeneral Health ProfessionsSociology and Political Science4 others

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

  1. 1 Railway Systems and Energy Efficiency Industrial and Manufacturing Engineering 11 works
  2. 2 Railway Engineering and Dynamics Mechanical Engineering 10 works
  3. 3 Health, Medicine and Society General Health Professions 5 works
  4. 4 Healthcare Systems and Practices General Health Professions 5 works
  5. 5 French Urban and Social Studies Sociology and Political Science 4 works
  6. 6 Infrastructure Maintenance and Monitoring Civil and Structural Engineering 3 works
  7. 7 Electrical Contact Performance and Analysis Mechanical Engineering 3 works
  8. 8 Mechanical stress and fatigue analysis Mechanics of Materials 2 works
  9. 9 Laser Design and Applications Electrical and Electronic Engineering 2 works
  10. 10 Noise Effects and Management Speech and Hearing 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 available37.4%not open62.6%

World: 28% of research is openly available.

with international co-authors12.4%domestic only87.6%

World: 19% is written across borders.

How has Société Nationale des Chemins de Fer Français (France)'s research output changed?

Output in 2018–2022 was 40% higher 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 Saint-Denis

All research institutions in Saint-Denis

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.