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Guam vs Sri Lanka

On research quality in 2022-now, Sri Lanka ranks #96 in the world and Guam #182, of 189 countries. Guam stands higher in 0 of the 16 fields both publish in, Sri Lanka in 16.

Research profiles alike: 0.74very similar shapes of research, whatever their size. How it is measured

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Guam

World rank, 2022-now
#182
#169 all time
Works, 2022-now
316
fractional
Top-10% rate
8.7%
share of its work among the world's most cited
Open access
41%
of its works free to read

Strongest relative focus: Leadership and Management, Horticulture, Library and Information Sciences.

Sri Lanka

World rank, 2022-now
#96
#99 all time
Works, 2022-now
21k
fractional
Top-10% rate
5.9%
share of its work among the world's most cited
Open access
60%
of its works free to read

Strongest relative focus: Archeology, Space and Planetary Science, Paleontology.

Who leads, measure by measure?

Guam leads on 4 of 9 measures: excellence for its fields, top-10% rate, citations per work and international co-authorship. Sri Lanka leads on 4 of 9 measures: research quality, output, open access and growth. The two are level on institutions in the world top 100.

Guam 41 level4 Sri Lanka
  1. #182Research qualityworld rank of 189 countries, 2022-now#96
  2. 0.83×Excellence for its fieldsits top-10% rate against what its topics predict; 1.00× is as expected0.52×
  3. 316Outputfractional works, 2022-now21k
  4. 8.7%Top-10% rateshare of its works among the world's most cited5.9%
  5. 20.1Citations per workall time, per fractional work9.3
  6. 0World top 100institutions it holds among the world's best 1000
  7. 41%Open accessof its works free to read, all time60%
  8. 41%Internationalof its works written with co-authors abroad, all time22%
  9. -5%Growthworks in 2022-25 against 2018-21; half a bar is no change+16%

A rank is drawn as its standing: the longer the bar, the nearer the top. Anything else is drawn against the larger of the two, and two values a hair apart are called level. Quality, excellence and the top-10% rate are explained in the methodology.

Who leads in each field?

Guam stands higher in 0 of 16 fields, Sri Lanka in 16. Each bar is that side's standing among all countries ranked in the field: the full bar is first place.

Guam 016 Sri Lanka
  1. -Agricultural and Biological Sciences#87
  2. -Arts and Humanities#85
  3. -Biochemistry, Genetics and Molecular Biology#84
  4. -Business, Management and Accounting#90
  5. -Chemistry#59
  6. -Computer Science#90
  7. -Decision Sciences#67
  8. -Earth and Planetary Sciences#60
  9. -Economics, Econometrics and Finance#97
  10. -Engineering#82
  11. -Environmental Science#82
  12. -Health Professions#90
  13. -Materials Science#80
  14. -Medicine#124
  15. -Psychology#78
  16. -Social Sciences#101

Standing is the percentile of world rank within each field, 2022-now; the printed number is the rank itself. A dash means the field is too small there to rank. How sides are compared.

The numbers behind each field

Click a heading to sort. The side that does better in a pair of columns is shaded: a lower rank, a higher rate, more works.

Field Guam rankSri Lanka rank Guam top 10%Sri Lanka top 10% Guam worksSri Lanka works
Agricultural and Biological Sciences - #87 - 7.2% - 1.7k
Arts and Humanities - #85 - 10.2% - 808
Biochemistry, Genetics and Molecular Biology - #84 - 6.2% - 787
Business, Management and Accounting - #90 - 4.9% - 1.3k
Chemistry - #59 - 8.2% - 224
Computer Science - #90 - 4.8% - 1.8k
Decision Sciences - #67 - 4.3% - 404
Earth and Planetary Sciences - #60 - 7.7% - 463
Economics, Econometrics and Finance - #97 - 5.6% - 678
Engineering - #82 - 6.0% - 2.3k
Environmental Science - #82 - 6.2% - 1.6k
Health Professions - #90 - 5.4% - 624
Materials Science - #80 - 6.7% - 428
Medicine - #124 - 4.3% - 3.8k
Psychology - #78 - 4.7% - 714
Social Sciences - #101 - 7.2% - 2.4k

What is each known for?

The keywords that describe each side's research, by fractional works in 2022-now and weighted toward what it does more of than the world.

Guam

▲ more of its work than of the world's◆ about the world's share▼ less than the world's
All 40 words, with their numbers
  1. Climate Change38▲ 3.9×41 topics
  2. Sustainability20▲ 2.3×27 topics
  3. Ocean Acidification19▲ 72×3 topics
  4. Marine Ecosystems17▲ 86×2 topics
  5. Globalization17▲ 2.4×25 topics
  6. Epidemiology17▲ 1.17×36 topics
  7. Bleaching13▲ 115×1 topic
  8. Coral Reefs13▲ 115×1 topic
  9. Public Health13▲ 2.6×23 topics
  10. Resilience13▲ 7.2×10 topics
  11. Economic Development12▲ 4.2×12 topics
  12. Pacific12▲ 176×2 topics
  13. Risk Factors12▲ 3.0×18 topics
  14. Vulnerability12▲ 14×5 topics
  15. Biodiversity12▲ 4.2×19 topics
  16. Conservation12▲ 7.5×13 topics
  17. Governance10▲ 9.0×5 topics
  18. Population Dynamics10▲ 11×10 topics
  19. Health Promotion10▲ 8.4×6 topics
  20. Decolonization9▲ 32×3 topics
  21. Islands9▲ 217×1 topic
  22. Small States9▲ 217×1 topic
  23. Genetic Diversity8▲ 5.0×11 topics
  24. Benthic Communities8▲ 35×2 topics
  25. Marine Biodiversity8▲ 35×2 topics
  26. Leadership8▲ 4.4×16 topics
  27. Fisheries Sustainability7▲ 22×2 topics
  28. Phylogenetic Analysis7▲ 6.1×9 topics
  29. Coastal Protection7▲ 28×2 topics
  30. Climate Change Impacts6▲ 15×4 topics
  31. Community Health6▲ 11×3 topics
  32. Ecosystem Resilience6▲ 12×4 topics
  33. Biogeography6▲ 6.4×9 topics
  34. Trophic Cascades6▲ 20×2 topics
  35. Ecosystem Management6▲ 30×1 topic
  36. Global Burden of Disease6▲ 7.0×3 topics
  37. Marine Fisheries6▲ 43×1 topic
  38. Cancer Incidence6▲ 12×2 topics
  39. Kelp Forests6▲ 51×1 topic
  40. Seagrasses6▲ 51×1 topic

Sri Lanka

▲ more of its work than of the world's◆ about the world's share▼ less than the world's
All 40 words, with their numbers
  1. Machine Learning1,193▲ 1.47×96 topics
  2. Epidemiology1,177▲ 1.21×138 topics
  3. Deep Learning1,168▲ 1.39×85 topics
  4. Sustainability1,018▲ 1.71×114 topics
  5. Climate Change964▲ 1.45×116 topics
  6. Environmental Impact722▲ 1.74×68 topics
  7. Globalization519◆ 1.08×127 topics
  8. Supply Chain Management468▲ 2.1×24 topics
  9. COVID-19467▲ 1.48×29 topics
  10. Neural Networks460▲ 1.22×40 topics
  11. Remote Sensing423▲ 1.42×36 topics
  12. Public Health409◆ 1.15×60 topics
  13. Renewable Energy399◆ 1.13×55 topics
  14. Antioxidant389▲ 2.3×51 topics
  15. Consumer Behavior368▲ 2.4×18 topics
  16. Risk Management365▲ 3.1×20 topics
  17. Pandemic361▲ 1.49×13 topics
  18. Healthcare336▲ 1.21×36 topics
  19. Economic Growth310▲ 1.56×35 topics
  20. Antioxidant Activity293▲ 1.93×31 topics
  21. Social Capital292▲ 2.3×20 topics
  22. Convolutional Neural Networks282▲ 1.59×14 topics
  23. Ecosystem Services274▲ 2.9×14 topics
  24. Genetic Diversity269▲ 2.5×22 topics
  25. Digital Transformation249▲ 1.89×23 topics
  26. Environmental Monitoring224▲ 2.4×15 topics
  27. Vaccine Development223▲ 3.6×11 topics
  28. Recycling221▲ 2.4×10 topics
  29. Waste Management217▲ 2.2×11 topics
  30. Intersectionality203▲ 4.4×13 topics
  31. Social Inequality201▲ 3.1×13 topics
  32. Antimicrobial200▲ 2.9×13 topics
  33. Agricultural Origins190▲ 24×1 topic
  34. Radiocarbon Dating190▲ 24×1 topic
  35. African Diaspora177▲ 19×4 topics
  36. Archaeology of Resistance174▲ 79×1 topic
  37. Black Feminist Theory174▲ 79×1 topic
  38. Food Supply Chain159▲ 5.8×2 topics
  39. business impact135▲ 6.2×1 topic
  40. economic effects135▲ 6.2×1 topic

Size is fractional works in the topics tagged with each word; colour is the word's share of the side's work against its share of the world's. Each word links to the topic it comes from most.

How has their output grown?

Sri Lanka has out-published Guam every year since 1980.

still counting2.5k5k7.5kSri Lanka6,113 in 2025Guam91 in 20251990200020102020

Fractional works per year.

Their share of all research

Growing output can still be a shrinking share, because all of science grows. Each line is a side as a percentage of every work published that year.

still counting0.050%0.10%0.15%Sri Lanka0.10% in 2025Guam0.0015% in 202519801990200020102020

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

How much of it reaches the world top 10%

The share of each side's works, year by year, that reached the world's 10% most cited for their field and year. The average of all institutions is 10.0% (why not 10%).

still counting10%20%Guam10.1% in 2025Sri Lanka6.4% in 2025200020102020

A year with under 1% of the side's peak output is left out: a rate over a handful of papers says nothing. The latest years are still being cited.

Who holds more of the world's best institutions?

A country's average quality and the number of institutions it holds at the very top can disagree, and both are worth knowing. The counts are nested: an institution in the top 50 is also in the top 100.

Guam 05 level0 Sri Lanka
  1. 0In the world top 500
  2. 0In the top 1000
  3. 0In the top 5000
  4. 0In the top 1,0000
  5. #51Elite capacityrank among 204 countries#51

Institutions ranked on research quality, 2022-now. Elite capacity counts a country's institutions by their worldwide rank, weighted so a place at #1 counts for more than one at #480.

Which publishes more research, Guam or Sri Lanka?

Sri Lanka publishes 67.2× as much research as Guam in 2022-now (21k against 316 fractional works).

Whose research has more impact, Guam or Sri Lanka?

8.7% of Guam's research reaches the world's top 10% most cited, against 5.9% for Sri Lanka.

Is Guam or Sri Lanka growing faster?

Output in 2022-25 was +16% against 2018-21 for Sri Lanka, and -5% for Guam.

Which has more open access research, Guam or Sri Lanka?

60% of Sri Lanka's research is free to read, against 41% of Guam's.

Which has more world-class institutions, Guam or Sri Lanka?

Guam holds 0 of the world's top 100 research institutions and Sri Lanka 0; in the top 1,000 it is 0 against 0.

Which institutions lead in each country?

The highest-ranked institutions on each side on research quality, 2022-now. The percentage is each institution's own top-10% rate: the share of its works that are among the world's 10% most cited for their field and year. Every figure stands alone, so they do not add up to 100%.

Guam

  1. 1University of Guam7.9% top 10% · 218 works
  2. 2Department of Administration9.8% top 10% · 87 works

Sri Lanka

  1. 1University of Moratuwa5.1% top 10% · 2.2k works
  2. 2University of Sri Jayewardenepura5.5% top 10% · 1.9k works
  3. 3Department of Archaeology13.1% top 10% · 1.1k works
  4. 4University of Jaffna9.1% top 10% · 746 works
  5. 5University of Peradeniya5.7% top 10% · 1.9k works
  6. 6General Sir John Kotelawala Defence University3.9% top 10% · 569 works

The number is the rank inside the country. The track on each row is the top-10% rate; the tick is the average of all institutions, 10.0% (how it is set): teal above it, red below. The ranking is the quality score, which compares the rate with what each institution's own topics predict and adds a small reward for size, so the rates do not fall in order.

Who are the top researchers on each side?

The most cited researchers on each side, among those ranked.

Guam

  1. 1 Kevin K.W. Ho #46,783 worldwide 4.1k citations · 273 works
  2. 2 Mike T. Carson #298,258 worldwide 2.4k citations · 156 works
  3. 3 Rob Rowan #390,380 worldwide 4.9k citations · 18 works
  4. 4 David J. Combosch #837,073 worldwide 1.6k citations · 42 works
  5. 5 Laurie J. Raymundo #985,219 worldwide 3k citations · 62 works

Sri Lanka

  1. 1 Samath Dhamminda Dharmaratne #11,594 worldwide 239k citations · 254 works
  2. 2 Meththika Suharshini Vithanage #12,535 worldwide 34k citations · 518 works
  3. 3 Nuwan Darshana Wickramasinghe #21,611 worldwide 40k citations · 179 works
  4. 4 Anushka Upamali Rajapaksha #43,312 worldwide 13k citations · 136 works
  5. 5 Devarajan Rathish #81,508 worldwide 12k citations · 102 works