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Hospital / health system · Vavuniya · Sri Lanka

Vavuniya General Hospital

generalhospitalvavuniya.lkROR OpenAlex
World rank, 2022-now
#16,252
of 22,385 · #28,861 all time
Rank in Sri Lanka
#26
of 36
Research works
153
▲ 218% vs 2018-21
Citations
1k
6.8 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
62%
world 40%
International
24%
world 18%
Vavuniya General Hospital

Which fields of science does Vavuniya General Hospital work in?

In 2022-now, 39% of research at Vavuniya General Hospital is in Physical Sciences, 24% in Health Sciences. Its largest fields are Computer Science (20%), Medicine (19%), Social Sciences (10%).

Physical Sciences: 38 fractional works · 38.6% of its workComputer Science: 20 fractional works · 20.2% of its workArtificial Intelligence: 6 fractional works · 6.3% of its workComputer Vision and Pattern Recognition: 5 fractional works · 4.9% of its workComputer Networks and Communications: 3 fractional works · 2.9% of its workInformation Systems: 3 fractional works · 2.7% of its workSignal Processing: 1 fractional works · 1.5% of its workHuman-Computer Interaction: 1 fractional works · 1.2% of its workHardware and Architecture: 0 fractional works · 0.5% of its workSmaller subfields together: 0 fractional works · 0.2% of its workEnvironmental Science: 8 fractional works · 8.6% of its workGlobal and Planetary Change: 2 fractional works · 2.0% of its workWater Science and Technology: 1 fractional works · 1.5% of its workEcology: 1 fractional works · 1.3% of its workManagement, Monitoring, Policy and Law: 1 fractional works · 1.0% of its workIndustrial and Manufacturing Engineering: 1 fractional works · 0.8% of its workEnvironmental Engineering: 1 fractional works · 0.6% of its workHealth, Toxicology and Mutagenesis: 0 fractional works · 0.4% of its workPollution: 0 fractional works · 0.4% of its workEnvironmental Chemistry: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.3% of its workEngineering: 6 fractional works · 6.0% of its workBiomedical Engineering: 2 fractional works · 1.6% of its workElectrical and Electronic Engineering: 1 fractional works · 0.8% of its workMedia Technology: 1 fractional works · 0.7% of its workBuilding and Construction: 1 fractional works · 0.6% of its workAerospace Engineering: 0 fractional works · 0.5% of its workIndustrial and Manufacturing Engineering: 0 fractional works · 0.5% of its workControl and Systems Engineering: 0 fractional works · 0.3% of its workSafety, Risk, Reliability and Quality: 0 fractional works · 0.2% of its workMechanical Engineering: 0 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.6% of its workMathematics: 1 fractional works · 1.1% of its workNumerical Analysis: 0 fractional works · 0.3% of its workModeling and Simulation: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.5% of its workEnergy: 1 fractional works · 0.8% of its workRenewable Energy, Sustainability and the Environment: 1 fractional works · 0.8% of its workChemistry: 1 fractional works · 0.7% of its workAnalytical Chemistry: 0 fractional works · 0.4% of its workOrganic Chemistry: 0 fractional works · 0.3% of its workPhysics and Astronomy: 1 fractional works · 0.7% of its workStatistical and Nonlinear Physics: 1 fractional works · 0.6% of its workSmaller subfields together: 0 fractional works · 0.1% of its workEarth and Planetary Sciences: 0 fractional works · 0.4% of its workMaterials Science: 0 fractional works · 0.1% of its workHealth Sciences: 23 fractional works · 23.6% of its workMedicine: 19 fractional works · 19.3% of its workOncology: 3 fractional works · 2.9% of its workRadiology, Nuclear Medicine and Imaging: 3 fractional works · 2.7% of its workPhysiology: 2 fractional works · 2.0% of its workEpidemiology: 2 fractional works · 1.9% of its workPulmonary and Respiratory Medicine: 1 fractional works · 0.9% of its workHematology: 1 fractional works · 0.9% of its workSurgery: 1 fractional works · 0.9% of its workRheumatology: 1 fractional works · 0.7% of its workEmergency Medicine: 1 fractional works · 0.7% of its workEndocrinology, Diabetes and Metabolism: 1 fractional works · 0.7% of its workPublic Health, Environmental and Occupational Health: 1 fractional works · 0.6% of its workInfectious Diseases: 0 fractional works · 0.5% of its workUrology: 0 fractional works · 0.5% of its workPsychiatry and Mental health: 0 fractional works · 0.4% of its workCardiology and Cardiovascular Medicine: 0 fractional works · 0.4% of its workObstetrics and Gynecology: 0 fractional works · 0.3% of its workOrthopedics and Sports Medicine: 0 fractional works · 0.3% of its workPathology and Forensic Medicine: 0 fractional works · 0.3% of its workNephrology: 0 fractional works · 0.3% of its workDermatology: 0 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 1.0% of its workHealth Professions: 3 fractional works · 3.5% of its workGeneral Health Professions: 2 fractional works · 1.9% of its workHealth Information Management: 1 fractional works · 1.1% of its workOccupational Therapy: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.3% of its workNursing: 0 fractional works · 0.5% of its workIssues, ethics and legal aspects: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.2% of its workDentistry: 0 fractional works · 0.2% of its workVeterinary: 0 fractional works · 0.1% of its workSocial Sciences: 22 fractional works · 22.7% of its workSocial Sciences: 10 fractional works · 9.9% of its workSociology and Political Science: 3 fractional works · 3.1% of its workEducation: 3 fractional works · 3.0% of its workLibrary and Information Sciences: 1 fractional works · 1.0% of its workPolitical Science and International Relations: 1 fractional works · 0.6% of its workCultural Studies: 0 fractional works · 0.5% of its workGeography, Planning and Development: 0 fractional works · 0.5% of its workTransportation: 0 fractional works · 0.5% of its workSmaller subfields together: 1 fractional works · 0.6% of its workBusiness, Management and Accounting: 5 fractional works · 4.8% of its workStrategy and Management: 1 fractional works · 1.5% of its workAccounting: 1 fractional works · 1.4% of its workOrganizational Behavior and Human Resource Management: 1 fractional works · 0.9% of its workManagement Information Systems: 0 fractional works · 0.5% of its workMarketing: 0 fractional works · 0.3% of its workManagement of Technology and Innovation: 0 fractional works · 0.3% of its workEconomics, Econometrics and Finance: 4 fractional works · 3.7% of its workEconomics and Econometrics: 3 fractional works · 3.1% of its workFinance: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.2% of its workPsychology: 3 fractional works · 2.7% of its workDevelopmental and Educational Psychology: 1 fractional works · 1.0% of its workSocial Psychology: 1 fractional works · 0.6% of its workExperimental and Cognitive Psychology: 0 fractional works · 0.5% of its workClinical Psychology: 0 fractional works · 0.3% of its workApplied Psychology: 0 fractional works · 0.3% of its workDecision Sciences: 2 fractional works · 1.6% of its workManagement Science and Operations Research: 1 fractional works · 1.1% of its workInformation Systems and Management: 0 fractional works · 0.5% of its workArts and Humanities: 0 fractional works · 0.1% of its workLife Sciences: 15 fractional works · 15.1% of its workAgricultural and Biological Sciences: 8 fractional works · 8.0% of its workPlant Science: 3 fractional works · 2.9% of its workAgronomy and Crop Science: 2 fractional works · 1.7% of its workGeneral Agricultural and Biological Sciences: 1 fractional works · 1.2% of its workAquatic Science: 1 fractional works · 0.6% of its workSoil Science: 1 fractional works · 0.6% of its workFood Science: 0 fractional works · 0.4% of its workEcology, Evolution, Behavior and Systematics: 0 fractional works · 0.3% of its workAnimal Science and Zoology: 0 fractional works · 0.2% of its workBiochemistry, Genetics and Molecular Biology: 3 fractional works · 2.8% of its workMolecular Biology: 1 fractional works · 0.8% of its workGenetics: 1 fractional works · 0.7% of its workCell Biology: 0 fractional works · 0.4% of its workEndocrinology: 0 fractional works · 0.3% of its workBiophysics: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.3% of its workNeuroscience: 2 fractional works · 2.3% of its workCognitive Neuroscience: 2 fractional works · 1.7% of its workNeurology: 1 fractional works · 0.5% of its workSmaller subfields together: 0 fractional works · 0.0% of its workImmunology and Microbiology: 2 fractional works · 1.9% of its workImmunology: 1 fractional works · 0.8% of its workParasitology: 0 fractional works · 0.5% of its workMicrobiology: 0 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.2% of its workALL ITS WORKVavuniya GeneralHospital97fractional works, 2022-now
Life Sciences15%Physical Sciences39%Health Sciences24%Social Sciences23%

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. Computer Science2020.2%
    2. Environmental Science88.6%
    3. Engineering66.0%
    4. Mathematics11.1%
    5. Energy10.8%
    6. Chemistry10.7%
    7. Physics and Astronomy10.7%
    8. Earth and Planetary Sciences00.4%
    9. Materials Science00.1%
    1. Medicine1919.3%
    2. Health Professions33.5%
    3. Nursing00.5%
    4. Dentistry00.2%
    5. Veterinary00.1%
    1. Social Sciences109.9%
    2. Business, Management and Accounting54.8%
    3. Economics, Econometrics and Finance43.7%
    4. Psychology32.7%
    5. Decision Sciences21.6%
    6. Arts and Humanities00.1%
    1. Agricultural and Biological Sciences88.0%
    2. Biochemistry, Genetics and Molecular Biology32.8%
    3. Neuroscience22.3%
    4. Immunology and Microbiology21.9%
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: 1.69× its world share, 8 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.53× its world share, 3 worksBiochemistry, Geneti…Immunology and Microbiology: 1.91× its world share, 2 worksImmunology and Micro…Neuroscience: 1.40× its world share, 2 worksNeuroscienceChemistry: 0.46× its world share, 1 worksChemistryComputer Science: 2.60× its world share, 20 worksComputer ScienceEarth and Planetary Sciences: 0.24× its world share, 0 worksEarth and Planetary …Energy: 0.90× its world share, 1 worksEnergyEngineering: 0.40× its world share, 6 worksEngineeringEnvironmental Science: 1.74× its world share, 8 worksEnvironmental ScienceMaterials Science: 0.03× its world share, 0 worksMaterials ScienceMathematics: 0.91× its world share, 1 worksMathematicsPhysics and Astronomy: 0.31× its world share, 1 worksPhysics and AstronomyDentistry: 0.35× its world share, 0 worksDentistryHealth Professions: 1.34× its world share, 3 worksHealth ProfessionsMedicine: 1.00× its world share, 19 worksMedicineNursing: 1.05× its world share, 0 worksNursingVeterinary: 0.51× its world share, 0 worksVeterinaryArts and Humanities: 0.04× its world share, 0 worksArts and HumanitiesBusiness, Management and Accounting: 1.50× its world share, 5 worksBusiness, Management…Decision Sciences: 1.63× its world share, 2 worksDecision SciencesEconomics, Econometrics and Finance: 1.71× its world share, 4 worksEconomics, Econometr…Psychology: 0.88× its world share, 3 worksPsychologySocial Sciences: 0.78× its world share, 10 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Computer Science, 2.6×. Every wedge is a field page.

All 24 fields, with their numbers
  1. Computer Science2.60×20 works
  2. Immunology and Microbiology1.91×2 works
  3. Environmental Science1.74×8 works
  4. Economics, Econometrics and Finance1.71×4 works
  5. Agricultural and Biological Sciences1.69×8 works
  6. Decision Sciences1.63×2 works
  7. Business, Management and Accounting1.50×5 works
  8. Neuroscience1.40×2 works
  9. Health Professions1.34×3 works
  10. Nursing1.05×0 works
  11. Medicine1.00×19 works
  12. Mathematics0.91×1 works
  13. Energy0.90×1 works
  14. Psychology0.88×3 works
  15. Social Sciences0.78×10 works
  16. Biochemistry, Genetics and Molecular Biology0.53×3 works
  17. Veterinary0.51×0 works
  18. Chemistry0.46×1 works
  19. Engineering0.40×6 works
  20. Dentistry0.35×0 works
  21. Physics and Astronomy0.31×1 works
  22. Earth and Planetary Sciences0.24×0 works
  23. Arts and Humanities0.04×0 works
  24. Materials Science0.03×0 works

Who are the top researchers at Vavuniya General Hospital?

Ranked on the quality score, Yogarajah Nanthagopan, Elangkumaran Periyathampy and Nagulan Ratnarajah lead among researchers whose main affiliation is Vavuniya General Hospital.

  1. 1 Yogarajah Nanthagopan Sri Lanka · #1,997,654 worldwide 200 citations · 31 works
  2. 2 Elangkumaran Periyathampy Sri Lanka · #2,942,046 worldwide 40 citations · 15 works
  3. 3 Nagulan Ratnarajah Sri Lanka · #6,008,158 worldwide 426 citations · 56 works
All ranked researchers at Vavuniya General Hospital

What are the most cited papers from Vavuniya General Hospital?

The most cited paper from Vavuniya General Hospital is "Differences between organophosphorus insecticides in human self-poisoning: a prospective cohort study" (Michael Eddleston, Peter Eyer, Franz Worek et al., 2005), with 374 citations. Next come "Multiple-dose activated charcoal in acute self-poisoning: a randomised controlled trial" (236) and "Early management after self-poisoning with an organophosphorus or carbamate pesticide – a treatment protocol for junior doctors" (198).

Most cited papers
#PaperReleasedCitations
1 Differences between organophosphorus insecticides in human self-poisoning: a prospective cohort study Michael Eddleston, Peter Eyer, Franz Worek et al. · The Lancet Oct 2005 374
2 Multiple-dose activated charcoal in acute self-poisoning: a randomised controlled trial Michael Eddleston, Edmund Juszczak, Nick A Buckley et al. · The Lancet Open access Feb 2008 236
3 Early management after self-poisoning with an organophosphorus or carbamate pesticide – a treatment protocol for junior doctors Michael Eddleston, Andrew Hamilton Dawson, Lakshman Delgoda Karalliedde et al. · Critical Care Open access 22 Sep 2004 198
4 Acute Human Self-Poisoning with Imidacloprid Compound: A Neonicotinoid Insecticide Fahim Mohamed, Indika Gawarammana, Thomas A. Robertson et al. · PLoS ONE Open access 7 Apr 2009 187
5 Pralidoxime in Acute Organophosphorus Insecticide Poisoning—A Randomised Controlled Trial Michael Eddleston, Peter Eyer, Franz Worek et al. · PLoS Medicine Open access 29 Jun 2009 170
All 62 most cited papers, with filters and sorting

Which keywords describe research at Vavuniya General Hospital?

By fractional works in 2022-now, weighted toward what it does more of than the world: Deep Learning, Machine Learning, Convolutional Neural Networks, Classification, IoT Security, Epidemiology, Information Literacy and Image Processing.

▲ 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. Deep Learning16▲ 4.9×48 topics
  2. Machine Learning10▲ 3.0×25 topics
  3. Epidemiology5▲ 1.37×28 topics
  4. Climate Change4▲ 1.61×23 topics
  5. Convolutional Neural Networks4▲ 5.8×12 topics
  6. Sustainability4▲ 1.56×12 topics
  7. Classification3▲ 7.4×9 topics
  8. Neural Networks3▲ 2.2×12 topics
  9. Globalization3▲ 1.53×8 topics
  10. Healthcare3▲ 2.6×7 topics
  11. Remote Sensing3▲ 2.2×11 topics
  12. COVID-192▲ 1.85×9 topics
  13. Feature Extraction2▲ 5.2×9 topics
  14. Financial Performance2▲ 4.2×5 topics
  15. Image Processing2▲ 5.5×7 topics
  16. IoT Security2▲ 7.5×3 topics
  17. Data Mining2▲ 3.0×3 topics
  18. Mortality2▲ 3.8×6 topics
  19. Digital Literacy2▲ 3.7×5 topics
  20. Information Literacy2▲ 8.0×4 topics
  21. Critical Thinking2▲ 16×3 topics
  22. Medical Imaging2▲ 3.4×6 topics
  23. Anomaly Detection2▲ 6.2×3 topics
  24. Feature Selection2▲ 8.0×3 topics
  25. Nitrogen Fixation2▲ 25×2 topics
  26. Sustainable Agriculture2▲ 5.7×4 topics
  27. Real-time Tracking2▲ 16×2 topics
  28. Distributed Systems1▲ 8.3×4 topics
  29. Human-Computer Interaction1▲ 7.8×3 topics
  30. Rhizosphere Interactions1▲ 17×2 topics
  31. Agricultural Productivity1▲ 50×1 topic
  32. Cancer Incidence1▲ 10×4 topics
  33. Intercropping1▲ 50×1 topic
  34. Online Research1▲ 57×2 topics
  35. Ensemble Methods1▲ 17×2 topics
  36. High-Performance Computing1▲ 15×2 topics
  37. Nutritional Status1▲ 13×2 topics
  38. Sign Language1▲ 21×2 topics
  39. Agricultural Sustainability1▲ 9.9×3 topics
  40. Internet Use1▲ 14×2 topics

Which research topics does Vavuniya General Hospital publish most on?

By volume in 2022-now: Agronomic Practices and Intercropping Systems, Library Science and Information Literacy, Artificial Intelligence in Healthcare and Health and Conflict Studies.

Agronomic Practices and …1Agronomic Practices and Intercropping Systems: 1 fractional worksLibrary Science and Info…1Library Science and Information Literacy: 1 fractional worksArtificial Intelligence in Healthcare: 1 fractional worksHealth and Conflict Studies: 1 fractional worksNutrition and Health in Aging: 1 fractional worksChild Development and Digital Technology: 1 fractional worksRemote Sensing in Agriculture: 1 fractional worksHand Gesture Recognition…1Hand Gesture Recognition Systems: 1 fractional worksImbalanced Data Classification Techniques: 1 fractional worksNetwork Security and Intrusion Detection: 1 fractional works
Agronomy and Crop ScienceLibrary and Information SciencesHealth Information ManagementGeneral Health Professions6 others

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

  1. 1 Agronomic Practices and Intercropping Systems Agronomy and Crop Science 1 works
  2. 2 Library Science and Information Literacy Library and Information Sciences 1 works
  3. 3 Artificial Intelligence in Healthcare Health Information Management 1 works
  4. 4 Health and Conflict Studies General Health Professions 1 works
  5. 5 Nutrition and Health in Aging Physiology 1 works
  6. 6 Child Development and Digital Technology Education 1 works
  7. 7 Remote Sensing in Agriculture Ecology 1 works
  8. 8 Hand Gesture Recognition Systems Human-Computer Interaction 1 works
  9. 9 Imbalanced Data Classification Techniques Artificial Intelligence 1 works
  10. 10 Network Security and Intrusion Detection Computer Networks and Communications 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 available61.7%not open38.3%

World: 40% of research is openly available.

with international co-authors24.2%domestic only75.8%

World: 18% is written across borders.

How has Vavuniya General Hospital's research output changed?

Output in 2022-2025 was 218% higher than in 2018-2021.

still counting200020102020
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 Vavuniya General Hospital as a percentage of every work published that year, 0.00032% in 2024.

still counting0.00020%0.00040%0.00060%Vavuniya General Hospital0.00043% in 2025200020102020

Fractional works of Vavuniya General Hospital over all fractional works that year. How the balance of science has shifted.

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Vavuniya General Hospital on Science Explorer

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