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Puerto Rico vs Ukraine

On research quality in 2022-now, Ukraine ranks #60 in the world and Puerto Rico #62, of 189 countries. Puerto Rico stands higher in 5 of the 25 fields both publish in, Ukraine in 20.

Research profiles alike: -0.30different shapes of research, whatever their size. How it is measured

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Puerto Rico

World rank, 2022-now
#62
#64 all time
Works, 2022-now
7.4k
fractional
Top-10% rate
7.8%
share of its work among the world's most cited
Open access
44%
of its works free to read

Strongest relative focus: Microbiology, General Psychology, Horticulture.

Ukraine

World rank, 2022-now
#60
#76 all time
Works, 2022-now
168k
fractional
Top-10% rate
6.6%
share of its work among the world's most cited
Open access
65%
of its works free to read

Strongest relative focus: Anatomy, General Economics, Econometrics and Finance, Fuel Technology.

Who leads, measure by measure?

Puerto Rico leads on 4 of 9 measures: excellence for its fields, top-10% rate, citations per work and international co-authorship. Ukraine leads on 3 of 9 measures: research quality, output and open access. The two are level on institutions in the world top 100 and growth.

Puerto Rico 42 level3 Ukraine
  1. #62Research qualityworld rank of 189 countries, 2022-now#60
  2. 0.71×Excellence for its fieldsits top-10% rate against what its topics predict; 1.00× is as expected0.43×
  3. 7.4kOutputfractional works, 2022-now168k
  4. 7.8%Top-10% rateshare of its works among the world's most cited6.6%
  5. 15.2Citations per workall time, per fractional work4.0
  6. 0World top 100institutions it holds among the world's best 1000
  7. 44%Open accessof its works free to read, all time65%
  8. 39%Internationalof its works written with co-authors abroad, all time14%
  9. +3%Growthworks in 2022-25 against 2018-21; half a bar is no change+4%

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?

Puerto Rico stands higher in 5 of 25 fields, Ukraine in 20. Ukraine leads most in Agricultural and Biological Sciences (#52 against #81); Puerto Rico leads most in Biochemistry, Genetics and Molecular Biology (#41 against #80). Each bar is that side's standing among all countries ranked in the field: the full bar is first place.

Puerto Rico 520 Ukraine
  1. #81Agricultural and Biological Sciences#52
  2. #62Arts and Humanities#42
  3. #41Biochemistry, Genetics and Molecular Biology#80
  4. -Business, Management and Accounting#63
  5. -Chemical Engineering#40
  6. -Chemistry#42
  7. #67Computer Science#58
  8. -Decision Sciences#61
  9. -Dentistry#53
  10. -Earth and Planetary Sciences#72
  11. -Economics, Econometrics and Finance#31
  12. -Energy#61
  13. #57Engineering#51
  14. #63Environmental Science#68
  15. #49Health Professions#70
  16. -Immunology and Microbiology#68
  17. -Materials Science#37
  18. -Mathematics#40
  19. #52Medicine#102
  20. -Neuroscience#66
  21. -Nursing#61
  22. -Pharmacology, Toxicology and Pharmaceutics#39
  23. -Physics and Astronomy#52
  24. #53Psychology#66
  25. #64Social Sciences#42

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 Puerto Rico rankUkraine rank Puerto Rico top 10%Ukraine top 10% Puerto Rico worksUkraine works
Agricultural and Biological Sciences #81 #52 7.2% 6.4% 314 8.7k
Arts and Humanities #62 #42 8.7% 7.6% 251 4.9k
Biochemistry, Genetics and Molecular Biology #41 #80 9.1% 2.5% 634 3.3k
Business, Management and Accounting - #63 - 7.0% - 5.6k
Chemical Engineering - #40 - 2.7% - 279
Chemistry - #42 - 3.1% - 1.8k
Computer Science #67 #58 5.7% 6.2% 294 12k
Decision Sciences - #61 - 4.1% - 905
Dentistry - #53 - 1.0% - 696
Earth and Planetary Sciences - #72 - 4.0% - 1.6k
Economics, Econometrics and Finance - #31 - 9.0% - 14k
Energy - #61 - 4.9% - 1.1k
Engineering #57 #51 7.2% 6.1% 560 26k
Environmental Science #63 #68 6.7% 7.3% 361 13k
Health Professions #49 #70 10.5% 6.5% 256 2.7k
Immunology and Microbiology - #68 - 1.7% - 796
Materials Science - #37 - 3.7% - 4.9k
Mathematics - #40 - 7.9% - 2k
Medicine #52 #102 7.2% 3.3% 2.1k 19k
Neuroscience - #66 - 2.1% - 1.2k
Nursing - #61 - 1.4% - 373
Pharmacology, Toxicology and Pharmaceutics - #39 - 7.3% - 485
Physics and Astronomy - #52 - 2.7% - 2.6k
Psychology #53 #66 5.4% 4.5% 318 3.4k
Social Sciences #64 #42 8.9% 9.8% 1k 36k

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.

Puerto Rico

▲ 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. Epidemiology612▲ 1.78×138 topics
  2. Education265▲ 1.78×109 topics
  3. Climate Change257◆ 1.09×104 topics
  4. Inflammation234▲ 1.27×83 topics
  5. Mental Health222▲ 1.79×45 topics
  6. Public Health220▲ 1.75×70 topics
  7. Globalization209▲ 1.23×131 topics
  8. Sustainability206◆ 0.98×103 topics
  9. Quality of Life203▲ 1.63×60 topics
  10. Cancer185▲ 1.59×57 topics
  11. COVID-19172▲ 1.54×31 topics
  12. Risk Factors166▲ 1.74×37 topics
  13. Treatment161▲ 1.53×52 topics
  14. Oxidative Stress158◆ 1.11×62 topics
  15. Innovation142▲ 1.59×58 topics
  16. Diagnosis142▲ 1.76×41 topics
  17. Depression142▲ 1.86×26 topics
  18. Educational Technology130▲ 1.28×40 topics
  19. Cardiovascular Disease119▲ 1.20×38 topics
  20. Healthcare118▲ 1.20×35 topics
  21. Identity117▲ 1.87×60 topics
  22. Gender110▲ 2.4×43 topics
  23. Chemotherapy110▲ 1.80×25 topics
  24. E-Learning110▲ 1.32×23 topics
  25. Immunotherapy110▲ 1.76×19 topics
  26. Metabolic Syndrome105▲ 1.50×24 topics
  27. Genetics105▲ 1.72×27 topics
  28. Teacher Training95▲ 1.79×23 topics
  29. Global Burden94▲ 1.99×12 topics
  30. Literature91▲ 1.93×43 topics
  31. Distance Learning86▲ 2.9×12 topics
  32. Health Promotion84▲ 3.1×17 topics
  33. Latin America84▲ 5.1×22 topics
  34. Pedagogy84▲ 1.93×25 topics
  35. Colonialism83▲ 2.0×40 topics
  36. Resilience83▲ 1.95×17 topics
  37. Genetic Mutations82▲ 2.2×23 topics
  38. Cancer Incidence63▲ 5.3×4 topics
  39. Human Papillomavirus51▲ 4.8×3 topics
  40. Virtual Teaching41▲ 8.8×1 topic

Ukraine

▲ 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. Sustainable Development23k▲ 7.8×112 topics
  2. Globalization12k▲ 3.4×180 topics
  3. Innovation12k▲ 6.1×89 topics
  4. Financial Security12k▲ 59×3 topics
  5. Economic Development11k▲ 7.7×56 topics
  6. Economic Security10k▲ 26×7 topics
  7. Legal Regulation9,255▲ 22×8 topics
  8. Climate Change9,158▲ 1.80×129 topics
  9. Environmental Management8,978▲ 12×23 topics
  10. Artificial Intelligence8,644▲ 3.2×67 topics
  11. Renewable Energy8,525▲ 3.1×61 topics
  12. Energy Efficiency8,353▲ 4.8×45 topics
  13. Human Rights7,344▲ 3.8×90 topics
  14. Digital Transformation7,226▲ 7.1×31 topics
  15. Foresight5,820▲ 24×2 topics
  16. Ethnicity5,702▲ 8.1×24 topics
  17. Industrial Policy5,637▲ 28×7 topics
  18. Pedagogy5,568▲ 5.9×30 topics
  19. Literature5,536▲ 5.4×62 topics
  20. Unmanned Aerial Vehicles5,435▲ 15×5 topics
  21. Strategic Planning5,430▲ 20×5 topics
  22. Design5,402▲ 18×6 topics
  23. Modernization5,387▲ 16×5 topics
  24. Culture5,370▲ 5.5×37 topics
  25. Air Force5,355▲ 24×1 topic
  26. Warfare5,355▲ 24×1 topic
  27. Philosophy5,153▲ 6.2×44 topics
  28. International Trade Law5,001▲ 20×2 topics
  29. Public Oversight4,988▲ 22×1 topic
  30. Transport Policy4,988▲ 22×1 topic
  31. Science4,983▲ 11×13 topics
  32. Social Influence4,955▲ 12×3 topics
  33. Public Finance4,932▲ 60×4 topics
  34. Islam4,916▲ 13×5 topics
  35. Digital Economy4,896▲ 13×20 topics
  36. Sharia Law4,890▲ 18×2 topics
  37. Malay Language4,888▲ 19×1 topic
  38. Fiscal Risks4,882▲ 73×1 topic
  39. Smart Industry4,882▲ 73×1 topic
  40. Innovation Development4,596▲ 32×3 topics

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?

Ukraine has out-published Puerto Rico every year since 1980.

still counting20k40k60kUkraine38k in 2025Puerto Rico2,147 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 counting0.50%1.0%Ukraine0.65% in 2025Puerto Rico0.036% 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 counting5%10%Puerto Rico7.9% in 2025Ukraine5.3% 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.

Puerto Rico 23 level0 Ukraine
  1. 0In the world top 500
  2. 0In the top 1000
  3. 0In the top 5000
  4. 1In the top 1,0000
  5. #40Elite 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, Puerto Rico or Ukraine?

Ukraine publishes 22.6× as much research as Puerto Rico in 2022-now (168k against 7.4k fractional works).

Whose research has more impact, Puerto Rico or Ukraine?

7.8% of Puerto Rico's research reaches the world's top 10% most cited, against 6.6% for Ukraine.

Is Puerto Rico or Ukraine growing faster?

Output in 2022-25 was +4% against 2018-21 for Ukraine, and +3% for Puerto Rico.

Which has more open access research, Puerto Rico or Ukraine?

65% of Ukraine's research is free to read, against 44% of Puerto Rico's.

Which has more world-class institutions, Puerto Rico or Ukraine?

Puerto Rico holds 0 of the world's top 100 research institutions and Ukraine 0; in the top 1,000 it is 1 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%.

Puerto Rico

  1. 1National University College17.6% top 10% · 927 works
  2. 2Universidad Metropolitana15.8% top 10% · 332 works
  3. 3Polytechnic University of Puerto Rico7.6% top 10% · 712 works
  4. 4University of Puerto Rico System7.3% top 10% · 1k works
  5. 5University of Puerto Rico at Río Piedras5.9% top 10% · 577 works
  6. 6Pontifical Catholic University of Puerto Rico3.7% top 10% · 338 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.

Puerto Rico

  1. 1 Justin Paul #306 worldwide 36k citations · 297 works
  2. 2 T. Mitchell Aide #13,830 worldwide 21k citations · 184 works
  3. 3 Jess K. Zimmerman #21,938 worldwide 19k citations · 279 works
  4. 4 Zhongfang Chen #23,734 worldwide 43k citations · 462 works
  5. 5 Gregory J. Quirk #27,119 worldwide 32k citations · 173 works

Ukraine

  1. 1 Igor Bondarenko #35,157 worldwide 56k citations · 630 works
  2. 2 Alexander N. Parkhomenko #40,415 worldwide 91k citations · 305 works
  3. 3 Y. Martynov #43,257 worldwide 19k citations · 224 works
  4. 4 Halyna Mishchuk #45,622 worldwide 1.8k citations · 67 works
  5. 5 Aleksei V. Chechkin #60,860 worldwide 9.2k citations · 235 works