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Syria vs Yemen

On research quality in 2022-now, Yemen ranks #105 in the world and Syria #176, of 189 countries. Syria stands higher in 1 of the 13 fields both publish in, Yemen in 12.

Research profiles alike: 0.67similar shapes of research, whatever their size. How it is measured

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Syria

World rank, 2022-now
#176
#180 all time
Works, 2022-now
5.4k
fractional
Top-10% rate
6.7%
share of its work among the world's most cited
Open access
70%
of its works free to read

Strongest relative focus: Orthodontics, Oral Surgery, Complementary and Manual Therapy.

Yemen

World rank, 2022-now
#105
#122 all time
Works, 2022-now
7.2k
fractional
Top-10% rate
8.7%
share of its work among the world's most cited
Open access
69%
of its works free to read

Strongest relative focus: Drug Discovery, General Dentistry, Numerical Analysis.

Who leads, measure by measure?

Yemen leads on 6 of 9 measures: research quality, excellence for its fields, output, top-10% rate, international co-authorship and growth. Syria leads on 1 of 9 measures: citations per work. The two are level on institutions in the world top 100 and open access.

Syria 12 level6 Yemen
  1. #176Research qualityworld rank of 189 countries, 2022-now#105
  2. 0.65×Excellence for its fieldsits top-10% rate against what its topics predict; 1.00× is as expected0.77×
  3. 5.4kOutputfractional works, 2022-now7.2k
  4. 6.7%Top-10% rateshare of its works among the world's most cited8.7%
  5. 9.9Citations per workall time, per fractional work8.7
  6. 0World top 100institutions it holds among the world's best 1000
  7. 70%Open accessof its works free to read, all time69%
  8. 22%Internationalof its works written with co-authors abroad, all time54%
  9. +68%Growthworks in 2022-25 against 2018-21; half a bar is no change+91%

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?

Syria stands higher in 1 of 13 fields, Yemen in 12. Yemen leads most in Computer Science (#84 against #127). Each bar is that side's standing among all countries ranked in the field: the full bar is first place.

Syria 112 Yemen
  1. #121Agricultural and Biological Sciences#114
  2. -Arts and Humanities#94
  3. #98Biochemistry, Genetics and Molecular Biology#81
  4. -Business, Management and Accounting#83
  5. #127Computer Science#84
  6. #47Dentistry-
  7. #128Engineering#86
  8. -Environmental Science#118
  9. -Health Professions#88
  10. -Materials Science#65
  11. -Mathematics#56
  12. #146Medicine#130
  13. #145Social Sciences#131

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 Syria rankYemen rank Syria top 10%Yemen top 10% Syria worksYemen works
Agricultural and Biological Sciences #121 #114 6.2% 7.4% 356 291
Arts and Humanities - #94 - 10.4% - 203
Biochemistry, Genetics and Molecular Biology #98 #81 5.8% 7.9% 306 215
Business, Management and Accounting - #83 - 12.4% - 320
Computer Science #127 #84 7.3% 11.7% 258 755
Dentistry #47 - 12.0% - 307 -
Engineering #128 #86 5.8% 9.2% 496 889
Environmental Science - #118 - 7.5% - 276
Health Professions - #88 - 8.4% - 244
Materials Science - #65 - 15.4% - 278
Mathematics - #56 - 10.1% - 231
Medicine #146 #130 5.4% 5.7% 2k 1.4k
Social Sciences #145 #131 6.1% 8.0% 380 859

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.

Syria

▲ 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. Epidemiology519▲ 1.95×130 topics
  2. Quality of Life243▲ 2.5×54 topics
  3. Machine Learning238◆ 1.07×80 topics
  4. Inflammation207▲ 1.46×81 topics
  5. Treatment200▲ 2.5×48 topics
  6. Deep Learning193▼ 0.84×72 topics
  7. Diagnosis184▲ 3.0×41 topics
  8. Surgical Management135▲ 5.0×20 topics
  9. Management132▲ 2.5×36 topics
  10. Oxidative Stress123◆ 1.12×58 topics
  11. Artificial Intelligence115▲ 1.21×45 topics
  12. Risk Factors114▲ 1.55×35 topics
  13. COVID-19109▲ 1.26×29 topics
  14. Chemotherapy108▲ 2.3×24 topics
  15. Prognostic Factors101▲ 3.5×14 topics
  16. Clinical Trials101▲ 2.3×18 topics
  17. Complications100▲ 3.0×17 topics
  18. Genetics97▲ 2.1×24 topics
  19. Antioxidant93▲ 2.0×51 topics
  20. Genetic Mutations81▲ 2.8×23 topics
  21. Pathogenesis79▲ 2.3×24 topics
  22. Clinical Practice Guidelines79▲ 2.1×14 topics
  23. Wound Healing70▲ 3.9×12 topics
  24. Diagnostic Criteria68▲ 4.4×10 topics
  25. Science66▲ 4.0×4 topics
  26. Prenatal Diagnosis65▲ 6.7×7 topics
  27. Orthognathic Surgery63▲ 18×2 topics
  28. Dental Esthetics61▲ 24×1 topic
  29. Orthodontic Tooth Movement61▲ 24×1 topic
  30. Islam61▲ 4.4×4 topics
  31. Social Influence61▲ 4.3×3 topics
  32. Psychological Factors59▲ 4.3×5 topics
  33. Sharia Law59▲ 6.2×2 topics
  34. Malay Language58▲ 6.2×1 topic
  35. Revascularization58▲ 5.5×4 topics
  36. Dental Materials54▲ 15×1 topic
  37. Restorative Dentistry54▲ 15×1 topic
  38. Mineral Trioxide Aggregate43▲ 17×1 topic
  39. Root Canal Irrigants43▲ 17×1 topic
  40. Fetal Surgery43▲ 12×3 topics

Yemen

▲ 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 Learning448▲ 1.61×94 topics
  2. Epidemiology430▲ 1.30×134 topics
  3. Deep Learning344▲ 1.19×84 topics
  4. Healthcare203▲ 2.1×31 topics
  5. Artificial Intelligence196▲ 1.65×57 topics
  6. Globalization192▲ 1.17×100 topics
  7. Supply Chain Management188▲ 2.5×23 topics
  8. Education169▲ 1.18×102 topics
  9. Ethnicity125▲ 4.0×15 topics
  10. Digital Transformation124▲ 2.8×26 topics
  11. Literature121▲ 2.6×27 topics
  12. Culture120▲ 2.8×21 topics
  13. History114▲ 1.97×25 topics
  14. Knowledge Management108▲ 2.3×30 topics
  15. Legal Regulation106▲ 5.7×8 topics
  16. Philosophy104▲ 2.8×22 topics
  17. Social Influence103▲ 5.8×3 topics
  18. Economic Security99▲ 5.6×7 topics
  19. Science99▲ 4.8×7 topics
  20. Islam98▲ 5.7×4 topics
  21. Customer Satisfaction98▲ 3.7×9 topics
  22. IoT97▲ 3.1×17 topics
  23. Smart Cities97▲ 4.4×8 topics
  24. Malay Language96▲ 8.2×1 topic
  25. Sharia Law96▲ 8.1×1 topic
  26. Corpus Linguistics85▲ 4.8×5 topics
  27. Foresight84▲ 7.7×2 topics
  28. Organizational Performance82▲ 3.8×11 topics
  29. Unmanned Aerial Vehicles81▲ 5.2×5 topics
  30. Strategic Planning80▲ 6.5×5 topics
  31. Design80▲ 5.8×6 topics
  32. Public Oversight79▲ 7.7×1 topic
  33. Transport Policy79▲ 7.7×1 topic
  34. Modernization78▲ 5.1×3 topics
  35. Air Force78▲ 7.9×1 topic
  36. Warfare78▲ 7.9×1 topic
  37. Nonlinear Equations76▲ 7.1×6 topics
  38. Social Media Marketing62▲ 15×1 topic
  39. Fractional Calculus58▲ 12×2 topics
  40. Cross-Cultural Communication57▲ 7.6×3 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?

Yemen has out-published Syria every year since 2016, when it overtook it.

still counting1k2k3kYemen2,139 in 2025Syria1,528 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 counting0.020%0.040%Yemen0.036% in 2025Syria0.026% 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%15%Yemen8.6% in 2025Syria7.7% 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.

Syria 05 level0 Yemen
  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, Syria or Yemen?

Yemen publishes 1.3× as much research as Syria in 2022-now (7.2k against 5.4k fractional works).

Whose research has more impact, Syria or Yemen?

8.7% of Yemen's research reaches the world's top 10% most cited, against 6.7% for Syria.

Is Syria or Yemen growing faster?

Output in 2022-25 was +91% against 2018-21 for Yemen, and +68% for Syria.

Which has more open access research, Syria or Yemen?

70% of Syria's research is free to read, against 69% of Yemen's.

Which has more world-class institutions, Syria or Yemen?

Syria holds 0 of the world's top 100 research institutions and Yemen 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%.

Syria

  1. 1Arab International University3.1% top 10% · 391 works
  2. 2Damascus University8.4% top 10% · 1.7k works
  3. 3University of Aleppo6.5% top 10% · 645 works
  4. 4Al Wataniya Private University3.1% top 10% · 166 works
  5. 5Homs University6.5% top 10% · 197 works
  6. 6Syrian Private University11.3% top 10% · 250 works

Yemen

  1. 1University of Science and Technology5.0% top 10% · 2.1k works
  2. 2Sana'a University7.9% top 10% · 1.7k works
  3. 3Ibb University15.3% top 10% · 445 works
  4. 4Taiz University11.9% top 10% · 445 works
  5. 5Thamar University12.1% top 10% · 474 works
  6. 6University of Aden6.6% top 10% · 551 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.

Syria

  1. 1 Abdo Hassoun #71,953 worldwide 6.8k citations · 179 works
  2. 2 Hazem Ghassan Abdo #93,429 worldwide 4.1k citations · 141 works
  3. 3 Reem Hasan Obaydo #301,686 worldwide 1.3k citations · 84 works
  4. 4 Salvatore Ceccarelli #504,669 worldwide 11k citations · 211 works
  5. 5 Entessar Mohammad Al Jbawi #569,131 worldwide 1.5k citations · 85 works

Yemen

  1. 1 Hamood Mohammed Al‐Hattami #33,148 worldwide 1.4k citations · 60 works
  2. 2 Abdulwahab Rajeh #54,107 worldwide 5.9k citations · 92 works
  3. 3 Mohammed A. Al‐Hakimi #61,642 worldwide 1.2k citations · 42 works
  4. 4 Saeed Rabea Baatwah #166,289 worldwide 933 citations · 51 works
  5. 5 Saeed Hamood Alsamhi #167,907 worldwide 7.2k citations · 201 works