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University · Burgas · Bulgaria

Burgas Free University

In research, Burgas Free University stands highest in Physical Sciences (#8,690 of 17,446 worldwide), over all time.

bfu.bg/bgROR OpenAlex
World rank, 2022-now
#12,826
of 22,385 · #16,508 all time
Rank in Bulgaria
#28
of 64
Research works
442
▲ 21% vs 2018-21
Citations
3k
6.9 per fractional work
Top-10% rate
3.8%
all institutions 10.0%
vs its own fields
0.90×
1.00× is exactly expected
Open access
42%
world 40%
International
18%
world 18%
Burgas Free University

What is Burgas Free University known for in research?

The fields where it stands highest, over all time, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorks
Physical SciencesDomain #8,690 of 17,446 4.6%258

Each strip is that field's whole ranked pool, with the notch where Burgas Free 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 fields of science does Burgas Free University work in?

In 2022-now, 42% of research at Burgas Free University is in Physical Sciences, 31% in Social Sciences. Its largest fields are Medicine (18%), Engineering (16%), Computer Science (15%).

Physical Sciences: 58 fractional works · 41.9% of its workEngineering: 22 fractional works · 15.7% of its workElectrical and Electronic Engineering: 4 fractional works · 2.8% of its workAerospace Engineering: 3 fractional works · 2.4% of its workMechanical Engineering: 3 fractional works · 2.0% of its workControl and Systems Engineering: 2 fractional works · 1.7% of its workBiomedical Engineering: 2 fractional works · 1.5% of its workAutomotive Engineering: 2 fractional works · 1.2% of its workOcean Engineering: 1 fractional works · 1.0% of its workMechanics of Materials: 1 fractional works · 0.7% of its workComputational Mechanics: 1 fractional works · 0.6% of its workBuilding and Construction: 1 fractional works · 0.6% of its workIndustrial and Manufacturing Engineering: 1 fractional works · 0.5% of its workMedia Technology: 1 fractional works · 0.5% of its workSmaller subfields together: 0 fractional works · 0.2% of its workComputer Science: 21 fractional works · 14.7% of its workArtificial Intelligence: 10 fractional works · 7.2% of its workInformation Systems: 7 fractional works · 4.8% of its workComputer Vision and Pattern Recognition: 2 fractional works · 1.1% of its workComputer Science Applications: 1 fractional works · 0.8% of its workComputational Theory and Mathematics: 0 fractional works · 0.4% of its workComputer Networks and Communications: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.2% of its workEnvironmental Science: 5 fractional works · 3.8% of its workWater Science and Technology: 2 fractional works · 1.2% of its workEnvironmental Engineering: 1 fractional works · 0.7% of its workManagement, Monitoring, Policy and Law: 1 fractional works · 0.7% of its workGlobal and Planetary Change: 1 fractional works · 0.4% of its workHealth, Toxicology and Mutagenesis: 0 fractional works · 0.4% of its workPollution: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.2% of its workChemistry: 3 fractional works · 2.0% of its workAnalytical Chemistry: 3 fractional works · 1.8% of its workSmaller subfields together: 0 fractional works · 0.2% of its workEnergy: 2 fractional works · 1.7% of its workRenewable Energy, Sustainability and the Environment: 2 fractional works · 1.2% of its workEnergy Engineering and Power Technology: 0 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.1% of its workEarth and Planetary Sciences: 2 fractional works · 1.5% of its workGeology: 1 fractional works · 1.0% of its workOceanography: 0 fractional works · 0.3% of its workSpace and Planetary Science: 0 fractional works · 0.2% of its workMaterials Science: 2 fractional works · 1.2% of its workMaterials Chemistry: 1 fractional works · 0.9% of its workElectronic, Optical and Magnetic Materials: 0 fractional works · 0.2% of its workMathematics: 1 fractional works · 1.0% of its workModeling and Simulation: 1 fractional works · 0.7% of its workNumerical Analysis: 0 fractional works · 0.2% of its workPhysics and Astronomy: 1 fractional works · 0.4% of its workStatistical and Nonlinear Physics: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.1% of its workSocial Sciences: 43 fractional works · 31.0% of its workSocial Sciences: 19 fractional works · 13.6% of its workEducation: 6 fractional works · 4.1% of its workSociology and Political Science: 5 fractional works · 3.6% of its workPolitical Science and International Relations: 3 fractional works · 1.8% of its workGender Studies: 2 fractional works · 1.3% of its workGeneral Social Sciences: 1 fractional works · 0.5% of its workCommunication: 0 fractional works · 0.4% of its workLaw: 0 fractional works · 0.4% of its workSafety Research: 0 fractional works · 0.4% of its workTransportation: 0 fractional works · 0.4% of its workCultural Studies: 0 fractional works · 0.2% of its workDemography: 0 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.4% of its workPsychology: 8 fractional works · 5.7% of its workClinical Psychology: 3 fractional works · 1.9% of its workDevelopmental and Educational Psychology: 2 fractional works · 1.7% of its workSocial Psychology: 2 fractional works · 1.2% of its workExperimental and Cognitive Psychology: 1 fractional works · 0.8% of its workSmaller subfields together: 0 fractional works · 0.1% of its workBusiness, Management and Accounting: 8 fractional works · 5.5% of its workOrganizational Behavior and Human Resource Management: 3 fractional works · 2.2% of its workManagement of Technology and Innovation: 2 fractional works · 1.7% of its workStrategy and Management: 1 fractional works · 0.6% of its workMarketing: 1 fractional works · 0.4% of its workManagement Information Systems: 1 fractional works · 0.4% of its workAccounting: 0 fractional works · 0.4% of its workArts and Humanities: 5 fractional works · 3.4% of its workMusic: 1 fractional works · 0.9% of its workLiterature and Literary Theory: 1 fractional works · 0.7% of its workVisual Arts and Performing Arts: 1 fractional works · 0.7% of its workLanguage and Linguistics: 1 fractional works · 0.5% of its workPhilosophy: 0 fractional works · 0.3% of its workArcheology: 0 fractional works · 0.2% of its workEconomics, Econometrics and Finance: 3 fractional works · 2.3% of its workEconomics and Econometrics: 3 fractional works · 2.0% of its workFinance: 0 fractional works · 0.3% of its workDecision Sciences: 1 fractional works · 0.4% of its workStatistics, Probability and Uncertainty: 0 fractional works · 0.2% of its workManagement Science and Operations Research: 0 fractional works · 0.2% of its workHealth Sciences: 28 fractional works · 20.2% of its workMedicine: 25 fractional works · 18.0% of its workOncology: 5 fractional works · 3.9% of its workPulmonary and Respiratory Medicine: 3 fractional works · 2.0% of its workCardiology and Cardiovascular Medicine: 2 fractional works · 1.4% of its workSurgery: 2 fractional works · 1.3% of its workEpidemiology: 1 fractional works · 1.0% of its workPhysiology: 1 fractional works · 1.0% of its workDermatology: 1 fractional works · 0.7% of its workPsychiatry and Mental health: 1 fractional works · 0.7% of its workEndocrinology, Diabetes and Metabolism: 1 fractional works · 0.6% of its workRadiology, Nuclear Medicine and Imaging: 1 fractional works · 0.5% of its workNeurology: 1 fractional works · 0.5% of its workPediatrics, Perinatology and Child Health: 1 fractional works · 0.4% of its workPharmacology: 1 fractional works · 0.4% of its workPublic Health, Environmental and Occupational Health: 1 fractional works · 0.4% of its workRheumatology: 0 fractional works · 0.4% of its workGastroenterology: 0 fractional works · 0.3% of its workObstetrics and Gynecology: 0 fractional works · 0.3% of its workImmunology and Allergy: 0 fractional works · 0.3% of its workGenetics: 0 fractional works · 0.2% of its workOrthopedics and Sports Medicine: 0 fractional works · 0.2% of its workSmaller subfields together: 2 fractional works · 1.3% of its workHealth Professions: 3 fractional works · 2.1% of its workGeneral Health Professions: 2 fractional works · 1.3% of its workSpeech and Hearing: 1 fractional works · 0.6% of its workSmaller subfields together: 0 fractional works · 0.2% of its workDentistry: 0 fractional works · 0.1% of its workNursing: 0 fractional works · 0.1% of its workLife Sciences: 10 fractional works · 6.9% of its workNeuroscience: 4 fractional works · 2.6% of its workEndocrine and Autonomic Systems: 3 fractional works · 2.2% of its workCognitive Neuroscience: 0 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.1% of its workBiochemistry, Genetics and Molecular Biology: 3 fractional works · 1.8% of its workGenetics: 1 fractional works · 0.7% of its workBiophysics: 1 fractional works · 0.5% of its workMolecular Biology: 1 fractional works · 0.5% of its workSmaller subfields together: 0 fractional works · 0.2% of its workAgricultural and Biological Sciences: 2 fractional works · 1.3% of its workFood Science: 1 fractional works · 0.8% of its workSmaller subfields together: 1 fractional works · 0.4% of its workImmunology and Microbiology: 1 fractional works · 0.8% of its workImmunology: 1 fractional works · 0.7% of its workSmaller subfields together: 0 fractional works · 0.1% of its workPharmacology, Toxicology and Pharmaceutics: 0 fractional works · 0.3% of its workPharmaceutical Science: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.1% of its workALL ITS WORKBurgas FreeUniversity139fractional works, 2022-now
Life Sciences7%Physical Sciences42%Health Sciences20%Social Sciences31%

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 24 fields, with their numbers
    1. Engineering2215.7%
    2. Computer Science2114.7%
    3. Environmental Science53.8%
    4. Chemistry32.0%
    5. Energy21.7%
    6. Earth and Planetary Sciences21.5%
    7. Materials Science21.2%
    8. Mathematics11.0%
    9. Physics and Astronomy10.4%
    1. Social Sciences1913.6%
    2. Psychology85.7%
    3. Business, Management and Accounting85.5%
    4. Arts and Humanities53.4%
    5. Economics, Econometrics and Finance32.3%
    6. Decision Sciences10.4%
    1. Medicine2518.0%
    2. Health Professions32.1%
    3. Dentistry00.1%
    4. Nursing00.1%
    1. Neuroscience42.6%
    2. Biochemistry, Genetics and Molecular Biology31.8%
    3. Agricultural and Biological Sciences21.3%
    4. Immunology and Microbiology10.8%
    5. Pharmacology, Toxicology and Pharmaceutics00.3%
All of science, and how each field's share has moved since 1950: the Science domain explorer

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: 0.26× its world share, 2 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.34× its world share, 3 worksBiochemistry, Geneti…Immunology and Microbiology: 0.81× its world share, 1 worksImmunology and Micro…Neuroscience: 1.62× its world share, 4 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 0.95× its world share, 0 worksPharmacology, Toxico…Chemistry: 1.28× its world share, 3 worksChemistryComputer Science: 1.90× its world share, 20 worksComputer ScienceEarth and Planetary Sciences: 0.97× its world share, 2 worksEarth and Planetary …Energy: 1.83× its world share, 2 worksEnergyEngineering: 1.05× its world share, 22 worksEngineeringEnvironmental Science: 0.76× its world share, 5 worksEnvironmental ScienceMaterials Science: 0.33× its world share, 2 worksMaterials ScienceMathematics: 0.81× its world share, 1 worksMathematicsPhysics and Astronomy: 0.18× its world share, 1 worksPhysics and AstronomyDentistry: 0.12× its world share, 0 worksDentistryHealth Professions: 0.81× its world share, 3 worksHealth ProfessionsMedicine: 0.93× its world share, 25 worksMedicineNursing: 0.12× its world share, 0 worksNursingArts and Humanities: 1.17× its world share, 5 worksArts and HumanitiesBusiness, Management and Accounting: 1.71× its world share, 8 worksBusiness, Management…Decision Sciences: 0.46× its world share, 1 worksDecision SciencesEconomics, Econometrics and Finance: 1.09× its world share, 3 worksEconomics, Econometr…Psychology: 1.88× its world share, 8 worksPsychologySocial Sciences: 1.07× its world share, 19 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Computer Science, 1.9×. Every wedge is a field page.

All 24 fields, with their numbers
  1. Computer Science1.90×20 works
  2. Psychology1.88×8 works
  3. Energy1.83×2 works
  4. Business, Management and Accounting1.71×8 works
  5. Neuroscience1.62×4 works
  6. Chemistry1.28×3 works
  7. Arts and Humanities1.17×5 works
  8. Economics, Econometrics and Finance1.09×3 works
  9. Social Sciences1.07×19 works
  10. Engineering1.05×22 works
  11. Earth and Planetary Sciences0.97×2 works
  12. Pharmacology, Toxicology and Pharmaceutics0.95×0 works
  13. Medicine0.93×25 works
  14. Immunology and Microbiology0.81×1 works
  15. Mathematics0.81×1 works
  16. Health Professions0.81×3 works
  17. Environmental Science0.76×5 works
  18. Decision Sciences0.46×1 works
  19. Biochemistry, Genetics and Molecular Biology0.34×3 works
  20. Materials Science0.33×2 works
  21. Agricultural and Biological Sciences0.26×2 works
  22. Physics and Astronomy0.18×1 works
  23. Dentistry0.12×0 works
  24. Nursing0.12×0 works

Who are the top researchers at Burgas Free University?

Ranked on the quality score, Marusya I. Lyubcheva, Slavka Dimitrova and Svetlin Vasilev lead among researchers whose main affiliation is Burgas Free University.

  1. 1 Marusya I. Lyubcheva Bulgaria · #4,087,197 worldwide 73 citations · 48 works
  2. 2 Slavka Dimitrova Bulgaria · #4,273,215 worldwide 25 citations · 15 works
  3. 3 Svetlin Vasilev Bulgaria · #4,520,128 worldwide 92 citations · 15 works
  4. 4 Христо Павлов Bulgaria · #4,621,199 worldwide 0 citations · 18 works
  5. 5 Гергана Николова Bulgaria · #4,766,324 worldwide 0 citations · 16 works
  6. 6 Stanislav Filipov Bulgaria · #4,796,893 worldwide 0 citations · 19 works
  7. 7 Milen Baltov Bulgaria · #4,843,244 worldwide 91 citations · 32 works
  8. 8 Красимира Минева Bulgaria · #4,850,788 worldwide 0 citations · 17 works
  9. 9 Margarita T. Terzieva Bulgaria · #4,865,137 worldwide 6 citations · 16 works
  10. 10 Мария Манева Bulgaria · #4,895,130 worldwide 0 citations · 15 works
All ranked researchers at Burgas Free University

What are the most cited papers from Burgas Free University?

The most cited paper from Burgas Free University is "Analysis of the dispersion of optical plastic materials" (Stefka N. Kasarova, Nina G. Sultanova, Christo D. Ivanov et al., 2006), with 435 citations. Next come "Topological indices for structure-activity correlations" (329) and "Molecular cyclicity and centricity of polycyclic graphs. I. Cyclicity based on resistance distances or reciprocal distances" (186).

Most cited papers
#PaperReleasedCitations
1 Analysis of the dispersion of optical plastic materials Stefka N. Kasarova, Nina G. Sultanova, Christo D. Ivanov et al. · Optical Materials 8 Sep 2006 435
2 Topological indices for structure-activity correlations Alexandrù T. Balaban, Ioan Moţoc, Danail Bonchev et al. · Topics in Current Chemistry Book chapter 4 Nov 2007 329
3 Molecular cyclicity and centricity of polycyclic graphs. I. Cyclicity based on resistance distances or reciprocal distances Danail Bonchev, Alexandrù T. Balaban, Xiaoyu Liu et al. · International Journal of Quantum Chemistry 15 Mar 1994 186
4 Dermatologist-like explainable AI enhances trust and confidence in diagnosing melanoma Tirtha Chanda et al. · Nature Communications Open access124 authors 15 Jan 2024 176
5 RELATIONSHIP BETWEEN LEXICAL COMPETENCE AND LANGUAGE PROFICIENCY: Variable Sensitivity Alla Zareva, Paula J. Schwanenflugel, Yordanka Nikolova · Studies in Second Language Acquisition 25 Oct 2005 175
All 61 most cited papers, with filters and sorting

Which keywords describe research at Burgas Free University?

By fractional works in 2022-now, weighted toward what it does more of than the world: Educational Technology, E-Learning, Distance Learning, Health Effects, Digital Transformation, Higher Education, Cyber-Physical Systems and Retinal Ganglion Cells.

▲ 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. Educational Technology11▲ 6.8×16 topics
  2. E-Learning7▲ 5.4×9 topics
  3. Machine Learning7▲ 1.48×26 topics
  4. Deep Learning5◆ 1.08×16 topics
  5. Sustainable Development5▲ 2.4×14 topics
  6. Sustainability4▲ 1.31×13 topics
  7. Health Effects4▲ 5.2×5 topics
  8. Digital Transformation4▲ 5.5×6 topics
  9. Higher Education4▲ 5.4×8 topics
  10. Distance Learning4▲ 7.9×3 topics
  11. Big Data4▲ 2.8×7 topics
  12. Online Learning4▲ 3.2×7 topics
  13. Energy Efficiency4▲ 2.7×9 topics
  14. Cyber-Physical Systems3▲ 9.0×6 topics
  15. Tumor Microenvironment3▲ 5.2×4 topics
  16. Pedagogy3▲ 4.6×4 topics
  17. Gene Expression3▲ 3.5×2 topics
  18. Retinal Ganglion Cells3▲ 20×2 topics
  19. Student Engagement3▲ 5.6×7 topics
  20. Circadian Clock3▲ 60×1 topic
  21. Melatonin3▲ 60×1 topic
  22. Cultural Heritage3▲ 3.6×4 topics
  23. Biodegradation3▲ 18×2 topics
  24. Digitalization3▲ 9.2×2 topics
  25. Fuzzy Logic3▲ 7.9×3 topics
  26. Immune Checkpoint Blockade2▲ 16×1 topic
  27. PD-1 and PD-L12▲ 16×1 topic
  28. Asphaltenes2▲ 77×1 topic
  29. Petroleum2▲ 38×1 topic
  30. Online Education2▲ 8.4×1 topic
  31. University Management2▲ 36×1 topic
  32. Urban Development2▲ 4.8×5 topics
  33. Genetic Algorithm2▲ 11×2 topics
  34. Professional Development2▲ 7.2×6 topics
  35. Informal Learning2▲ 11×2 topics
  36. Intelligent Agent2▲ 482×1 topic
  37. InterCriteria Analysis2▲ 482×1 topic
  38. Control Systems2▲ 7.2×3 topics
  39. Mathematical Modeling2▲ 14×3 topics
  40. Organizational Change2▲ 15×2 topics

Which research topics does Burgas Free University publish most on?

By volume in 2022-now: Circadian rhythm and melatonin, Cancer Immunotherapy and Biomarkers, Petroleum Processing and Analysis and Educational Innovations and Challenges.

Circadian rhythm and mel…3Circadian rhythm and melatonin: 3 fractional worksCancer Immunotherapy and…2Cancer Immunotherapy and Biomarkers: 2 fractional worksPetroleum Processing and…2Petroleum Processing and Analysis: 2 fractional worksEducational Innovations …2Educational Innovations and Challenges: 2 fractional worksIntuitionistic Fuzzy Systems Applications: 2 fractional worksInnovative Educational Technologies: 2 fractional works3D Surveying and Cultura…13D Surveying and Cultural Heritage: 1 fractional worksEnvironmental Science and Water Management: 1 fractional worksDiverse Music Education Insights: 1 fractional worksRenewable energy and sus…1Renewable energy and sustainable power systems: 1 fractional works
Endocrine and Autonomic SystemsOncologyAnalytical ChemistryInformation Systems5 others

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

  1. 1 Circadian rhythm and melatonin Endocrine and Autonomic Systems 3 works
  2. 2 Cancer Immunotherapy and Biomarkers Oncology 2 works
  3. 3 Petroleum Processing and Analysis Analytical Chemistry 2 works
  4. 4 Educational Innovations and Challenges Information Systems 2 works
  5. 5 Intuitionistic Fuzzy Systems Applications Artificial Intelligence 2 works
  6. 6 Innovative Educational Technologies Information Systems 2 works
  7. 7 3D Surveying and Cultural Heritage Geology 1 works
  8. 8 Environmental Science and Water Management Water Science and Technology 1 works
  9. 9 Diverse Music Education Insights Music 1 works
  10. 10 Renewable energy and sustainable power systems Renewable Energy, Sustainability and the Environment 1 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 available41.7%not open58.3%

World: 40% of research is openly available.

with international co-authors17.7%domestic only82.3%

World: 18% is written across borders.

How has Burgas Free University's research output changed?

Output in 2022-2025 was 21% higher 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 Burgas Free University as a percentage of every work published that year, 0.00060% in 2024.

still counting0.0010%0.0020%Burgas Free University0.00062% in 202519801990200020102020

Fractional works of Burgas Free 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 2025Burgas Free University2.4% in 20252020

Of each year's output, the share that reached the world's 10% most cited for its field and year. Peak 7.1% in 2023.

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Burgas Free University on Science Explorer

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