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City · Bulgaria

Research in Sofia

Science Explorer records 125 research institutions in Sofia, Bulgaria. The highest-ranked on research quality in 2022-now are Bulgarian Academy of Sciences, Sofia University "St. Kliment Ohridski" and New Bulgarian University.

Research institutions
125
15 of them ranked worldwide
Research works
121k
▲ 25% vs 2018-21
Citations
1.3M
10.9 per fractional work, all time
Top-10% rate, 2022-now
8.3%
all institutions 10.0%
Active span
1950-2026
77 years on the record
Sofia

A city carries no overall standing here. The quality score is built for institutions and countries, the units its floors and field normalisation were designed around. An empty rank on this page is a statement about the measure, not about the place.

Which research institutions are in Sofia?

#InstitutionWorksAgainst the largest hereWorld rank
1Bulgarian Academy of SciencesGovernment institution 62,337 #1,689
2Sofia University "St. Kliment Ohridski"University 13,300 #4,889
3Technical University of SofiaUniversity 8,398 #11,457
4Medical University of SofiaUniversity 5,840 #15,214
5Chemical Pharmaceutical Research InstituteResearch facility 2,306 #34,919 all time
6University of Chemical Technology and MetallurgyUniversity 2,042 #13,520
7Employment AgencyGovernment institution 1,953 #10,799
8University of Architecture, Civil Engineering and GeodesyUniversity 1,848 #9,092
9University of National and World EconomyUniversity 1,688 #6,253
10Military Medical AcademyHospital / health system 1,569 #20,284
11National Heart HospitalHospital / health system 1,419 #20,920
12Agricultural AcademyGovernment institution 1,252 #10,668
13New Bulgarian UniversityUniversity 1,164 #5,210
14Institute of BiophysicsResearch facility 999 #14,972
15University of ForestryUniversity 951 #13,836
16Center for the Study of DemocracyNonprofit 764 #14,069
17Alexandrovska HospitalHospital / health system 745 #20,180
18National Sports Academy Vassil LevskiUniversity 667 #10,711
19AgrobioinstituteResearch facility 650 #17,508
20National Center of Infectious and Parasitic DiseasesUniversity 626 #21,209
21G. S. Rakovski National Defence CollegeUniversity 599 #18,360
22National Drug Addiction CenterResearch facility 595 #16,154 all time
23University of Mining and Geology "Saint Ivan Rilski"University 572 #15,360
24University of Library Studies and Information TechnologiesUniversity 551 #9,739
25University Hospital St. Ivan RilskiHospital / health system 545 #19,829
26Institute of Agricultural EconomicsResearch facility 540 #18,623
27Institute of Astronomy and National Astronomical ObservatoryResearch facility 514 #32,198 all time
28National Institute of Emergency Medicine "Pirogov"Hospital / health system 477 #17,681
29National Center for Supercomputing ApplicationsResearch facility 449 #10,952 all time
30Risk Engineering (Bulgaria)Company 433 #14,161
31Queen Giovanna HospitalHospital / health system 418 #21,056
32Tokuda HospitalHospital / health system 339 #21,524
33Institute of Soil Science “Nikola Poushkarov”Research facility 323 #21,716
34Ministry of InteriorGovernment institution 322 #17,449
35Todor Kableshkov University of TransportUniversity 320 #19,537
36Human Resource Development CenterInstitution 288 #17,442
37Bulgarian National BankInstitution 270 #16,098
38Centre for Advanced StudyNonprofit 264 #21,215 all time
39University of Telecommunications and PostUniversity 245 #16,499
40Acibadem City ClinicHospital / health system 241 #21,621
41Ontotext (Bulgaria)Company 231 #22,600 all time
42Asthma AssociationInstitution 198 #29,449 all time
43Remote Sensing Application CenterResearch facility 193 #29,494 all time
44National Center of Hygiene Medical Ecology and NutritionGovernment institution 191 #32,197 all time
45National Academy of ArtsUniversity 189 #20,723
46National Center of Public Health and AnalysesResearch facility 173 #30,720 all time
47National Center of Radiobiology and Radiation ProtectionHospital / health system 168 #31,731 all time
48Lozenetz HospitalHospital / health system 159 #34,269 all time
49Multiprofile Hospital for Active Treatment in Neurology and Psychiatry St. NaumHospital / health system 151 #33,968 all time
50University of Finance, Business and EntrepreneurshipUniversity 140 #34,057 all time
51Maichin DomHospital / health system 126 #34,703 all time
52National Specialized Hospital for Active Treatment of Hematologic DiseasesHospital / health system 116 not ranked
53Bulgarian Biodiversity FoundationInstitution 113 not ranked
54University Specialized Hospital for Active Treatment of EndocrinologyHospital / health system 107 not ranked
55Institute of Cryobiology and Food TechnologyResearch facility 106 not ranked
56Bulgarian Research and Education NetworkInstitution 103 not ranked
57University of Structural Engineering and Architecture Lyuben KaravelovUniversity 83 not ranked
58Pensoft Publishers (Bulgaria)Company 61 not ranked
59National Academy for Theatre and Film ArtsUniversity 59 not ranked
60Bulgarian Society for the Protection of BirdsNonprofit 55 not ranked

By fractional works over the whole record; world rank on research quality in 2022-now. Bars are scaled to the largest institution in this city, not to anything off the page.

How concentrated the city is

The same institutions as shares of everything the list accounts for. A city that is one university and a city that is twelve read alike as a table and not at all alike here.

Bulgarian Academy of Sciences: 51.3%Sofia University "St. Kliment Ohridski": 10.9%Technical University of Sofia: 6.9%Medical University of Sofia: 4.8%56 others listed: 26.1%51%largest
Bulgarian Academy of Sciences62k · 51.3%Sofia University "St. Kliment Ohridski"13k · 10.9%Technical University of Sofia8,398 · 6.9%Medical University of Sofia5,840 · 4.8%56 others listed32k · 26.1%

Shares of the rows listed above, not of the whole node.

Which fields of science does Sofia work in?

In 2022-now, 50% of research in Sofia is in Physical Sciences, 19% in Social Sciences. Its largest fields are Engineering (20%), Medicine (14%), Social Sciences (9%). It does 1.3× the world's share of Physical Sciences.

Physical Sciences: 13k fractional works · 50.5% of its workEngineering: 5,131 fractional works · 19.5% of its workElectrical and Electronic Engineering: 1,381 fractional works · 5.3% of its workMechanical Engineering: 587 fractional works · 2.2% of its workControl and Systems Engineering: 534 fractional works · 2.0% of its workBiomedical Engineering: 526 fractional works · 2.0% of its workAerospace Engineering: 323 fractional works · 1.2% of its workIndustrial and Manufacturing Engineering: 311 fractional works · 1.2% of its workCivil and Structural Engineering: 301 fractional works · 1.1% of its workMechanics of Materials: 270 fractional works · 1.0% of its workBuilding and Construction: 250 fractional works · 1.0% of its workAutomotive Engineering: 198 fractional works · 0.8% of its workComputational Mechanics: 132 fractional works · 0.5% of its workOcean Engineering: 106 fractional works · 0.4% of its workSafety, Risk, Reliability and Quality: 98 fractional works · 0.4% of its workMedia Technology: 94 fractional works · 0.4% of its workComputer Science: 2,218 fractional works · 8.5% of its workArtificial Intelligence: 709 fractional works · 2.7% of its workInformation Systems: 466 fractional works · 1.8% of its workComputer Networks and Communications: 324 fractional works · 1.2% of its workComputer Vision and Pattern Recognition: 249 fractional works · 0.9% of its workComputational Theory and Mathematics: 181 fractional works · 0.7% of its workComputer Science Applications: 88 fractional works · 0.3% of its workSignal Processing: 71 fractional works · 0.3% of its workSmaller subfields together: 132 fractional works · 0.5% of its workEnvironmental Science: 1,597 fractional works · 6.1% of its workGlobal and Planetary Change: 342 fractional works · 1.3% of its workEcology: 320 fractional works · 1.2% of its workEnvironmental Engineering: 188 fractional works · 0.7% of its workManagement, Monitoring, Policy and Law: 177 fractional works · 0.7% of its workWater Science and Technology: 118 fractional works · 0.5% of its workHealth, Toxicology and Mutagenesis: 101 fractional works · 0.4% of its workPollution: 98 fractional works · 0.4% of its workEnvironmental Chemistry: 83 fractional works · 0.3% of its workIndustrial and Manufacturing Engineering: 71 fractional works · 0.3% of its workNature and Landscape Conservation: 61 fractional works · 0.2% of its workSmaller subfields together: 37 fractional works · 0.1% of its workMaterials Science: 1,110 fractional works · 4.2% of its workMaterials Chemistry: 594 fractional works · 2.3% of its workBiomaterials: 169 fractional works · 0.6% of its workElectronic, Optical and Magnetic Materials: 128 fractional works · 0.5% of its workPolymers and Plastics: 116 fractional works · 0.4% of its workSmaller subfields together: 102 fractional works · 0.4% of its workPhysics and Astronomy: 802 fractional works · 3.1% of its workAstronomy and Astrophysics: 223 fractional works · 0.8% of its workAtomic and Molecular Physics, and Optics: 216 fractional works · 0.8% of its workStatistical and Nonlinear Physics: 170 fractional works · 0.6% of its workNuclear and High Energy Physics: 102 fractional works · 0.4% of its workSmaller subfields together: 91 fractional works · 0.3% of its workEarth and Planetary Sciences: 794 fractional works · 3.0% of its workOceanography: 187 fractional works · 0.7% of its workGeophysics: 158 fractional works · 0.6% of its workAtmospheric Science: 146 fractional works · 0.6% of its workPaleontology: 117 fractional works · 0.4% of its workGeochemistry and Petrology: 66 fractional works · 0.3% of its workGeology: 62 fractional works · 0.2% of its workSmaller subfields together: 58 fractional works · 0.2% of its workMathematics: 630 fractional works · 2.4% of its workApplied Mathematics: 131 fractional works · 0.5% of its workMathematical Physics: 95 fractional works · 0.4% of its workNumerical Analysis: 91 fractional works · 0.3% of its workGeometry and Topology: 89 fractional works · 0.3% of its workModeling and Simulation: 73 fractional works · 0.3% of its workAlgebra and Number Theory: 65 fractional works · 0.2% of its workSmaller subfields together: 85 fractional works · 0.3% of its workChemistry: 509 fractional works · 1.9% of its workOrganic Chemistry: 244 fractional works · 0.9% of its workInorganic Chemistry: 75 fractional works · 0.3% of its workSpectroscopy: 66 fractional works · 0.3% of its workAnalytical Chemistry: 62 fractional works · 0.2% of its workSmaller subfields together: 62 fractional works · 0.2% of its workEnergy: 352 fractional works · 1.3% of its workRenewable Energy, Sustainability and the Environment: 215 fractional works · 0.8% of its workEnergy Engineering and Power Technology: 94 fractional works · 0.4% of its workSmaller subfields together: 43 fractional works · 0.2% of its workChemical Engineering: 98 fractional works · 0.4% of its workSocial Sciences: 5,099 fractional works · 19.4% of its workSocial Sciences: 2,266 fractional works · 8.6% of its workSociology and Political Science: 657 fractional works · 2.5% of its workPolitical Science and International Relations: 458 fractional works · 1.7% of its workEducation: 277 fractional works · 1.1% of its workCultural Studies: 126 fractional works · 0.5% of its workTransportation: 92 fractional works · 0.4% of its workLaw: 78 fractional works · 0.3% of its workDemography: 70 fractional works · 0.3% of its workSafety Research: 70 fractional works · 0.3% of its workAnthropology: 70 fractional works · 0.3% of its workUrban Studies: 69 fractional works · 0.3% of its workCommunication: 62 fractional works · 0.2% of its workSmaller subfields together: 238 fractional works · 0.9% of its workArts and Humanities: 822 fractional works · 3.1% of its workArcheology: 165 fractional works · 0.6% of its workLanguage and Linguistics: 157 fractional works · 0.6% of its workLiterature and Literary Theory: 133 fractional works · 0.5% of its workPhilosophy: 73 fractional works · 0.3% of its workHistory: 68 fractional works · 0.3% of its workClassics: 59 fractional works · 0.2% of its workSmaller subfields together: 167 fractional works · 0.6% of its workBusiness, Management and Accounting: 671 fractional works · 2.6% of its workStrategy and Management: 199 fractional works · 0.8% of its workManagement Information Systems: 139 fractional works · 0.5% of its workManagement of Technology and Innovation: 135 fractional works · 0.5% of its workAccounting: 60 fractional works · 0.2% of its workOrganizational Behavior and Human Resource Management: 59 fractional works · 0.2% of its workSmaller subfields together: 80 fractional works · 0.3% of its workEconomics, Econometrics and Finance: 583 fractional works · 2.2% of its workEconomics and Econometrics: 396 fractional works · 1.5% of its workFinance: 100 fractional works · 0.4% of its workGeneral Economics, Econometrics and Finance: 88 fractional works · 0.3% of its workPsychology: 466 fractional works · 1.8% of its workSocial Psychology: 151 fractional works · 0.6% of its workClinical Psychology: 107 fractional works · 0.4% of its workDevelopmental and Educational Psychology: 98 fractional works · 0.4% of its workExperimental and Cognitive Psychology: 88 fractional works · 0.3% of its workSmaller subfields together: 22 fractional works · 0.1% of its workDecision Sciences: 291 fractional works · 1.1% of its workManagement Science and Operations Research: 181 fractional works · 0.7% of its workStatistics, Probability and Uncertainty: 55 fractional works · 0.2% of its workSmaller subfields together: 55 fractional works · 0.2% of its workHealth Sciences: 4,324 fractional works · 16.5% of its workMedicine: 3,591 fractional works · 13.7% of its workSurgery: 447 fractional works · 1.7% of its workPulmonary and Respiratory Medicine: 304 fractional works · 1.2% of its workEpidemiology: 250 fractional works · 1.0% of its workCardiology and Cardiovascular Medicine: 238 fractional works · 0.9% of its workPublic Health, Environmental and Occupational Health: 193 fractional works · 0.7% of its workPhysiology: 179 fractional works · 0.7% of its workRadiology, Nuclear Medicine and Imaging: 177 fractional works · 0.7% of its workOncology: 162 fractional works · 0.6% of its workInfectious Diseases: 153 fractional works · 0.6% of its workNeurology: 115 fractional works · 0.4% of its workPharmacology: 114 fractional works · 0.4% of its workRheumatology: 114 fractional works · 0.4% of its workPathology and Forensic Medicine: 101 fractional works · 0.4% of its workEndocrinology, Diabetes and Metabolism: 99 fractional works · 0.4% of its workPediatrics, Perinatology and Child Health: 78 fractional works · 0.3% of its workComplementary and alternative medicine: 70 fractional works · 0.3% of its workPsychiatry and Mental health: 67 fractional works · 0.3% of its workOrthopedics and Sports Medicine: 67 fractional works · 0.3% of its workReproductive Medicine: 61 fractional works · 0.2% of its workDermatology: 61 fractional works · 0.2% of its workBiochemistry: 58 fractional works · 0.2% of its workSmaller subfields together: 484 fractional works · 1.8% of its workHealth Professions: 401 fractional works · 1.5% of its workGeneral Health Professions: 145 fractional works · 0.6% of its workPhysical Therapy, Sports Therapy and Rehabilitation: 76 fractional works · 0.3% of its workSmaller subfields together: 180 fractional works · 0.7% of its workDentistry: 215 fractional works · 0.8% of its workOral Surgery: 83 fractional works · 0.3% of its workOrthodontics: 62 fractional works · 0.2% of its workSmaller subfields together: 70 fractional works · 0.3% of its workNursing: 83 fractional works · 0.3% of its workNutrition and Dietetics: 80 fractional works · 0.3% of its workVeterinary: 34 fractional works · 0.1% of its workLife Sciences: 3,580 fractional works · 13.6% of its workAgricultural and Biological Sciences: 1,752 fractional works · 6.7% of its workPlant Science: 626 fractional works · 2.4% of its workEcology, Evolution, Behavior and Systematics: 326 fractional works · 1.2% of its workFood Science: 240 fractional works · 0.9% of its workInsect Science: 138 fractional works · 0.5% of its workGeneral Agricultural and Biological Sciences: 123 fractional works · 0.5% of its workSoil Science: 87 fractional works · 0.3% of its workAgronomy and Crop Science: 78 fractional works · 0.3% of its workAnimal Science and Zoology: 75 fractional works · 0.3% of its workSmaller subfields together: 60 fractional works · 0.2% of its workBiochemistry, Genetics and Molecular Biology: 1,177 fractional works · 4.5% of its workMolecular Biology: 678 fractional works · 2.6% of its workGenetics: 191 fractional works · 0.7% of its workCell Biology: 58 fractional works · 0.2% of its workCancer Research: 57 fractional works · 0.2% of its workSmaller subfields together: 193 fractional works · 0.7% of its workNeuroscience: 317 fractional works · 1.2% of its workCognitive Neuroscience: 134 fractional works · 0.5% of its workCellular and Molecular Neuroscience: 80 fractional works · 0.3% of its workSmaller subfields together: 103 fractional works · 0.4% of its workImmunology and Microbiology: 229 fractional works · 0.9% of its workImmunology: 137 fractional works · 0.5% of its workSmaller subfields together: 92 fractional works · 0.4% of its workPharmacology, Toxicology and Pharmaceutics: 106 fractional works · 0.4% of its workALL ITS WORKSofia26kfractional works, 2022-now
Life Sciences14%Physical Sciences50%Health Sciences16%Social Sciences19%

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 city does than the world.

Its 4 domains and 26 fields, with their numbers
    1. Engineering5,13119.5%
    2. Computer Science2,2188.5%
    3. Environmental Science1,5976.1%
    4. Materials Science1,1104.2%
    5. Physics and Astronomy8023.1%
    6. Earth and Planetary Sciences7943.0%
    7. Mathematics6302.4%
    8. Chemistry5091.9%
    9. Energy3521.3%
    10. Chemical Engineering980.4%
  2. Social Sciences5,09919.4%
    1. Social Sciences2,2668.6%
    2. Arts and Humanities8223.1%
    3. Business, Management and Accounting6712.6%
    4. Economics, Econometrics and Finance5832.2%
    5. Psychology4661.8%
    6. Decision Sciences2911.1%
  3. Health Sciences4,32416.5%
    1. Medicine3,59113.7%
    2. Health Professions4011.5%
    3. Dentistry2150.8%
    4. Nursing830.3%
    5. Veterinary340.1%
  4. Life Sciences3,58013.6%
    1. Agricultural and Biological Sciences1,7526.7%
    2. Biochemistry, Genetics and Molecular Biology1,1774.5%
    3. Neuroscience3171.2%
    4. Immunology and Microbiology2290.9%
    5. Pharmacology, Toxicology and Pharmaceutics1060.4%
All of science, and how each field's share has moved since 1950: the Science domain explorer

What is Sofia strongest at in research?

Relative to its size, research in Sofia is most concentrated in General Energy, Numerical Analysis and Classics (5.1× the world share in General Energy).

  1. General EnergySubfield · 31.4 works5.1×
  2. Numerical AnalysisSubfield · 87.6 works4.5×
  3. ClassicsSubfield · 54.7 works4.0×
  4. Algebra and Number TheorySubfield · 57.1 works3.9×
  5. Energy Engineering and Power TechnologySubfield · 85.5 works3.5×
  6. General Materials ScienceSubfield · 32.0 works3.2×
  7. Geochemistry and PetrologySubfield · 57.2 works2.5×
← less than its size predicts1×more →

Location quotient against the world baseline. Inside a single field a city is a meaningful unit, which is why this is where a city is measured at all.

The whole field profile

All 26 fields at once: above the ring is more than a place this size would be expected to do. A specialist and a generalist produce the same ranked list and a completely different shape.

Agricultural and Biological Sciences: 1.37× its world share, 1,483 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.84× its world share, 1,016 worksBiochemistry, Geneti…Immunology and Microbiology: 0.87× its world share, 199 worksImmunology and Micro…Neuroscience: 0.71× its world share, 264 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 1.15× its world share, 92 worksPharmacology, Toxico…Chemical Engineering: 1.06× its world share, 85 worksChemical EngineeringChemistry: 1.25× its world share, 448 worksChemistryComputer Science: 1.12× its world share, 1,979 worksComputer ScienceEarth and Planetary Sciences: 1.81× its world share, 646 worksEarth and Planetary …Energy: 1.51× its world share, 317 worksEnergyEngineering: 1.33× its world share, 4,542 worksEngineeringEnvironmental Science: 1.14× its world share, 1,292 worksEnvironmental ScienceMaterials Science: 1.20× its world share, 953 worksMaterials ScienceMathematics: 2.06× its world share, 550 worksMathematicsPhysics and Astronomy: 1.39× its world share, 705 worksPhysics and AstronomyDentistry: 1.64× its world share, 181 worksDentistryHealth Professions: 0.60× its world share, 357 worksHealth ProfessionsMedicine: 0.71× its world share, 3,112 worksMedicineNursing: 0.65× its world share, 72 worksNursingVeterinary: 0.94× its world share, 29 worksVeterinaryArts and Humanities: 1.07× its world share, 705 worksArts and HumanitiesBusiness, Management and Accounting: 0.80× its world share, 588 worksBusiness, Management…Decision Sciences: 1.14× its world share, 251 worksDecision SciencesEconomics, Econometrics and Finance: 1.07× its world share, 519 worksEconomics, Econometr…Psychology: 0.58× its world share, 400 worksPsychologySocial Sciences: 0.68× its world share, 1,970 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Mathematics, 2.1×. Every wedge is a field page.

All 26 fields, with their numbers
  1. Mathematics2.06×550 works
  2. Earth and Planetary Sciences1.81×646 works
  3. Dentistry1.64×181 works
  4. Energy1.51×317 works
  5. Physics and Astronomy1.39×705 works
  6. Agricultural and Biological Sciences1.37×1,483 works
  7. Engineering1.33×4,542 works
  8. Chemistry1.25×448 works
  9. Materials Science1.20×953 works
  10. Pharmacology, Toxicology and Pharmaceutics1.15×92 works
  11. Environmental Science1.14×1,292 works
  12. Decision Sciences1.14×251 works
  13. Computer Science1.12×1,979 works
  14. Arts and Humanities1.07×705 works
  15. Economics, Econometrics and Finance1.07×519 works
  16. Chemical Engineering1.06×85 works
  17. Veterinary0.94×29 works
  18. Immunology and Microbiology0.87×199 works
  19. Biochemistry, Genetics and Molecular Biology0.84×1,016 works
  20. Business, Management and Accounting0.80×588 works
  21. Neuroscience0.71×264 works
  22. Medicine0.71×3,112 works
  23. Social Sciences0.68×1,970 works
  24. Nursing0.65×72 works
  25. Health Professions0.60×357 works
  26. Psychology0.58×400 works

Which keywords describe research in Sofia?

By fractional works in 2022-now, weighted toward what it does more of than the world: Renewable Energy, Climate Change, Machine Learning, Sustainability, Sustainable Development, Energy Efficiency, Invasive Species and Biodiversity.

▲ 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 city'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. Climate Change1,070▲ 1.50×124 topics
  2. Machine Learning942◆ 1.08×97 topics
  3. Renewable Energy860▲ 2.3×59 topics
  4. Sustainability818▲ 1.28×121 topics
  5. Deep Learning776▼ 0.86×85 topics
  6. Epidemiology762▼ 0.73×136 topics
  7. Sustainable Development649▲ 1.58×103 topics
  8. Artificial Intelligence522▲ 1.39×65 topics
  9. Environmental Impact520▲ 1.16×71 topics
  10. Energy Efficiency507▲ 2.1×46 topics
  11. Neural Networks486▲ 1.20×42 topics
  12. Globalization462◆ 0.90×150 topics
  13. Big Data461▲ 1.84×34 topics
  14. Remote Sensing441▲ 1.38×41 topics
  15. Biodiversity425▲ 2.1×37 topics
  16. Oxidative Stress423◆ 0.98×61 topics
  17. Nanoparticles358◆ 1.08×44 topics
  18. Invasive Species357▲ 3.2×21 topics
  19. Internet of Things356▲ 1.58×31 topics
  20. Innovation310◆ 1.14×77 topics
  21. Mechanical Properties309▲ 1.20×39 topics
  22. Smart Grid298▲ 3.1×10 topics
  23. Cyber-Physical Systems288▲ 4.2×9 topics
  24. Antioxidant282▲ 1.56×51 topics
  25. Security280▲ 1.60×31 topics
  26. Biogeography259▲ 3.5×20 topics
  27. Power Electronics253▲ 3.0×8 topics
  28. Optimization241▲ 2.0×26 topics
  29. Renewable Energy Integration240▲ 2.8×6 topics
  30. Evolution198▲ 2.8×19 topics
  31. Phylogeny191▲ 4.3×17 topics
  32. Taxonomy188▲ 4.9×15 topics
  33. Mediterranean178▲ 7.6×6 topics
  34. Ecology168▲ 3.7×10 topics
  35. Holocene158▲ 5.4×3 topics
  36. Sea Level148▲ 6.1×2 topics
  37. Black Sea132▲ 13×2 topics
  38. Sedimentation129▲ 8.8×2 topics
  39. Caspian Sea127▲ 17×1 topic
  40. paleoceanography127▲ 17×1 topic

What research is done in Sofia?

Marine and environmental…111Marine and environmental studies: 111 fractional worksMicrogrid Control and Op…68Microgrid Control and Optimization: 68 fractional worksSmart Grid Energy Management: 66 fractional worksIntuitionistic Fuzzy Systems Applications: 62 fractional worksIntegrated Energy Systems Optimization: 58 fractional worksDigital Transformation in Industry: 56 fractional worksPower Systems and Renewable Energy: 56 fractional worksAdvanced Battery Technol…52Advanced Battery Technologies Research: 52 fractional worksByzantine Studies and History: 50 fractional worksBig Data and Business Intelligence: 49 fractional works
OceanographyControl and Systems EngineeringElectrical and Electronic EngineeringArtificial Intelligence5 others

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

  1. 1 Marine and environmental studies Oceanography 111 works
  2. 2 Microgrid Control and Optimization Control and Systems Engineering 68 works
  3. 3 Smart Grid Energy Management Electrical and Electronic Engineering 66 works
  4. 4 Intuitionistic Fuzzy Systems Applications Artificial Intelligence 62 works
  5. 5 Integrated Energy Systems Optimization Electrical and Electronic Engineering 58 works
  6. 6 Digital Transformation in Industry Industrial and Manufacturing Engineering 56 works
  7. 7 Power Systems and Renewable Energy Energy Engineering and Power Technology 56 works
  8. 8 Advanced Battery Technologies Research Automotive Engineering 52 works
  9. 9 Byzantine Studies and History Classics 50 works
  10. 10 Big Data and Business Intelligence Management Information Systems 49 works

Research output over time

still counting1990200020102020
grewheldshrank

The same series as a ribbon: one cell per year, darker for more.

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 2025Sofia9.3% in 2025200020102020

Of each year's output, the share that reached the world's 10% most cited for its field and year. Peak 12.9% in 2015.

Discussion

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