University of the Ryukyus

Short name

Ryūdai

Country, city

Japan, Okinawa

02z1n9q24

Organization website

Publications

12 900

Citations

239 418

h-index

157

Top-3 journals

Journal of the Physical Society of Japan (237 publications)

Scientific Reports (158 publications)

Internal Medicine (109 publications)

Top-3 organizations

University of Tokyo (1015 publications)

Kyoto University (563 publications)

Kagoshima University (559 publications)

Top-3 foreign organizations

National University of Singapore (83 publications)

National Taiwan University (73 publications)

James Cook University (61 publications)

Most cited in 5 years

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Publication title from chars

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Field of science

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Publications found: 0

Since 1969

Total publications

12900

Total citations

239418

Citations per publication

18.56

Average publications per year

230.36

Average authors per publication

6.93

h-index

157

Metrics description

h-index

A scientist has an h-index if h of his N publications are cited at least h times each, while the remaining (N - h) publications are cited no more than h times each.

https://www.pnas.org/doi/full/10.1073/pnas.0507655102

Top-30

Fields of science

	500 1000 1500 2000 2500
General Medicine	General Medicine, 2029, 7.08% General Medicine 2029 publications, 7.08%
Ecology, Evolution, Behavior and Systematics	Ecology, Evolution, Behavior and Systematics, 1143, 3.99% Ecology, Evolution, Behavior and Systematics 1143 publications, 3.99%
Biochemistry	Biochemistry, 752, 2.62% Biochemistry 752 publications, 2.62%
Molecular Biology	Molecular Biology, 699, 2.44% Molecular Biology 699 publications, 2.44%
Aquatic Science	Aquatic Science, 679, 2.37% Aquatic Science 679 publications, 2.37%
General Physics and Astronomy	General Physics and Astronomy, 545, 1.9% General Physics and Astronomy 545 publications, 1.9%
Genetics	Genetics, 536, 1.87% Genetics 536 publications, 1.87%
Infectious Diseases	Infectious Diseases, 484, 1.69% Infectious Diseases 484 publications, 1.69%
Oncology	Oncology, 481, 1.68% Oncology 481 publications, 1.68%
Electrical and Electronic Engineering	Electrical and Electronic Engineering, 469, 1.64% Electrical and Electronic Engineering 469 publications, 1.64%
Animal Science and Zoology	Animal Science and Zoology, 460, 1.6% Animal Science and Zoology 460 publications, 1.6%
Immunology	Immunology, 444, 1.55% Immunology 444 publications, 1.55%
Plant Science	Plant Science, 422, 1.47% Plant Science 422 publications, 1.47%
Cell Biology	Cell Biology, 419, 1.46% Cell Biology 419 publications, 1.46%
Cancer Research	Cancer Research, 381, 1.33% Cancer Research 381 publications, 1.33%
Physiology	Physiology, 380, 1.33% Physiology 380 publications, 1.33%
Cardiology and Cardiovascular Medicine	Cardiology and Cardiovascular Medicine, 353, 1.23% Cardiology and Cardiovascular Medicine 353 publications, 1.23%
Pharmacology	Pharmacology, 349, 1.22% Pharmacology 349 publications, 1.22%
Condensed Matter Physics	Condensed Matter Physics, 346, 1.21% Condensed Matter Physics 346 publications, 1.21%
Multidisciplinary	Multidisciplinary, 343, 1.2% Multidisciplinary 343 publications, 1.2%
Ecology	Ecology, 335, 1.17% Ecology 335 publications, 1.17%
Microbiology	Microbiology, 318, 1.11% Microbiology 318 publications, 1.11%
General Chemistry	General Chemistry, 315, 1.1% General Chemistry 315 publications, 1.1%
Organic Chemistry	Organic Chemistry, 299, 1.04% Organic Chemistry 299 publications, 1.04%
General Biochemistry, Genetics and Molecular Biology	General Biochemistry, Genetics and Molecular Biology, 289, 1.01% General Biochemistry, Genetics and Molecular Biology 289 publications, 1.01%
Virology	Virology, 280, 0.98% Virology 280 publications, 0.98%
Oceanography	Oceanography, 274, 0.96% Oceanography 274 publications, 0.96%
Internal Medicine	Internal Medicine, 269, 0.94% Internal Medicine 269 publications, 0.94%
Drug Discovery	Drug Discovery, 267, 0.93% Drug Discovery 267 publications, 0.93%
Surgery	Surgery, 255, 0.89% Surgery 255 publications, 0.89%
	500 1000 1500 2000 2500

Journals

	50 100 150 200 250
Journal of the Physical Society of Japan	Journal of the Physical Society of Japan, 237, 1.84% Journal of the Physical Society of Japan 237 publications, 1.84%
Scientific Reports	Scientific Reports, 158, 1.22% Scientific Reports 158 publications, 1.22%
Internal Medicine	Internal Medicine, 109, 0.84% Internal Medicine 109 publications, 0.84%
PLoS ONE	PLoS ONE, 107, 0.83% PLoS ONE 107 publications, 0.83%
Ichthyological Research	Ichthyological Research, 94, 0.73% Ichthyological Research 94 publications, 0.73%
Coral Reefs	Coral Reefs, 92, 0.71% Coral Reefs 92 publications, 0.71%
Zootaxa	Zootaxa, 83, 0.64% Zootaxa 83 publications, 0.64%
Microbiology and Immunology	Microbiology and Immunology, 75, 0.58% Microbiology and Immunology 75 publications, 0.58%
Journal of Physics: Conference Series	Journal of Physics: Conference Series, 71, 0.55% Journal of Physics: Conference Series 71 publications, 0.55%
Journal of Dermatology	Journal of Dermatology, 71, 0.55% Journal of Dermatology 71 publications, 0.55%
Blood	Blood, 67, 0.52% Blood 67 publications, 0.52%
The Proceedings of the Annual Convention of the Japanese Psychological Association	The Proceedings of the Annual Convention of the Japanese Psychological Association, 59, 0.46% The Proceedings of the Annual Convention of the Japanese Psychological Association 59 publications, 0.46%
Journal of Architecture and Planning (Transactions of AIJ)	Journal of Architecture and Planning (Transactions of AIJ), 57, 0.44% Journal of Architecture and Planning (Transactions of AIJ) 57 publications, 0.44%
Journal of Infection and Chemotherapy	Journal of Infection and Chemotherapy, 55, 0.43% Journal of Infection and Chemotherapy 55 publications, 0.43%
Energies	Energies, 55, 0.43% Energies 55 publications, 0.43%
Physical Review D	Physical Review D, 53, 0.41% Physical Review D 53 publications, 0.41%
Hypertension Research	Hypertension Research, 51, 0.4% Hypertension Research 51 publications, 0.4%
Sustainability	Sustainability, 51, 0.4% Sustainability 51 publications, 0.4%
Bioscience, Biotechnology and Biochemistry	Bioscience, Biotechnology and Biochemistry, 51, 0.4% Bioscience, Biotechnology and Biochemistry 51 publications, 0.4%
Biochemical and Biophysical Research Communications	Biochemical and Biophysical Research Communications, 50, 0.39% Biochemical and Biophysical Research Communications 50 publications, 0.39%
Lecture Notes in Computer Science	Lecture Notes in Computer Science, 49, 0.38% Lecture Notes in Computer Science 49 publications, 0.38%
Physical Review B	Physical Review B, 49, 0.38% Physical Review B 49 publications, 0.38%
Marine Biology	Marine Biology, 48, 0.37% Marine Biology 48 publications, 0.37%
Medical Entomology and Zoology	Medical Entomology and Zoology, 46, 0.36% Medical Entomology and Zoology 46 publications, 0.36%
International Journal of Urology	International Journal of Urology, 45, 0.35% International Journal of Urology 45 publications, 0.35%
Psychiatry and Clinical Neurosciences	Psychiatry and Clinical Neurosciences, 45, 0.35% Psychiatry and Clinical Neurosciences 45 publications, 0.35%
Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes	Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes, 44, 0.34% Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes 44 publications, 0.34%
Retrovirology	Retrovirology, 42, 0.33% Retrovirology 42 publications, 0.33%
Marine Biodiversity	Marine Biodiversity, 42, 0.33% Marine Biodiversity 42 publications, 0.33%
Anthropological Science	Anthropological Science, 41, 0.32% Anthropological Science 41 publications, 0.32%
	50 100 150 200 250

Publishers

	500 1000 1500 2000 2500 3000
Elsevier	Elsevier, 2832, 21.95% Elsevier 2832 publications, 21.95%
Springer Nature	Springer Nature, 2612, 20.25% Springer Nature 2612 publications, 20.25%
Wiley	Wiley, 1551, 12.02% Wiley 1551 publications, 12.02%
MDPI	MDPI, 463, 3.59% MDPI 463 publications, 3.59%
Oxford University Press	Oxford University Press, 439, 3.4% Oxford University Press 439 publications, 3.4%
Taylor & Francis	Taylor & Francis, 421, 3.26% Taylor & Francis 421 publications, 3.26%
Physical Society of Japan	Physical Society of Japan, 237, 1.84% Physical Society of Japan 237 publications, 1.84%
Ovid Technologies (Wolters Kluwer Health)	Ovid Technologies (Wolters Kluwer Health), 156, 1.21% Ovid Technologies (Wolters Kluwer Health) 156 publications, 1.21%
Japanese Society of Internal Medicine	Japanese Society of Internal Medicine, 149, 1.16% Japanese Society of Internal Medicine 149 publications, 1.16%
IOP Publishing	IOP Publishing, 143, 1.11% IOP Publishing 143 publications, 1.11%
SAGE	SAGE, 136, 1.05% SAGE 136 publications, 1.05%
Public Library of Science (PLoS)	Public Library of Science (PLoS), 132, 1.02% Public Library of Science (PLoS) 132 publications, 1.02%
American Society for Microbiology	American Society for Microbiology, 124, 0.96% American Society for Microbiology 124 publications, 0.96%
American Physical Society (APS)	American Physical Society (APS), 124, 0.96% American Physical Society (APS) 124 publications, 0.96%
Institute of Electrical and Electronics Engineers (IEEE)	Institute of Electrical and Electronics Engineers (IEEE), 117, 0.91% Institute of Electrical and Electronics Engineers (IEEE) 117 publications, 0.91%
American Chemical Society (ACS)	American Chemical Society (ACS), 115, 0.89% American Chemical Society (ACS) 115 publications, 0.89%
Architectural Institute of Japan	Architectural Institute of Japan, 109, 0.84% Architectural Institute of Japan 109 publications, 0.84%
Frontiers Media S.A.	Frontiers Media S.A., 101, 0.78% Frontiers Media S.A. 101 publications, 0.78%
Magnolia Press	Magnolia Press, 101, 0.78% Magnolia Press 101 publications, 0.78%
AIP Publishing	AIP Publishing, 86, 0.67% AIP Publishing 86 publications, 0.67%
Cambridge University Press	Cambridge University Press, 80, 0.62% Cambridge University Press 80 publications, 0.62%
American Society of Hematology	American Society of Hematology, 68, 0.53% American Society of Hematology 68 publications, 0.53%
BMJ	BMJ, 64, 0.5% BMJ 64 publications, 0.5%
Pharmaceutical Society of Japan	Pharmaceutical Society of Japan, 63, 0.49% Pharmaceutical Society of Japan 63 publications, 0.49%
Spandidos Publications	Spandidos Publications, 61, 0.47% Spandidos Publications 61 publications, 0.47%
Institute of Electrical Engineers of Japan (IEE Japan)	Institute of Electrical Engineers of Japan (IEE Japan), 61, 0.47% Institute of Electrical Engineers of Japan (IEE Japan) 61 publications, 0.47%
The Japanese Psychological Association	The Japanese Psychological Association, 60, 0.47% The Japanese Psychological Association 60 publications, 0.47%
Walter de Gruyter	Walter de Gruyter, 56, 0.43% Walter de Gruyter 56 publications, 0.43%
World Scientific	World Scientific, 56, 0.43% World Scientific 56 publications, 0.43%
Japan Society of Mechanical Engineers	Japan Society of Mechanical Engineers, 56, 0.43% Japan Society of Mechanical Engineers 56 publications, 0.43%
	500 1000 1500 2000 2500 3000

With other organizations

	200 400 600 800 1000 1200
University of Tokyo	University of Tokyo, 1015, 4.36% University of Tokyo 1015 publications, 4.36%
Kyoto University	Kyoto University, 563, 2.42% Kyoto University 563 publications, 2.42%
Kagoshima University	Kagoshima University, 559, 2.4% Kagoshima University 559 publications, 2.4%
Kyushu University	Kyushu University, 515, 2.21% Kyushu University 515 publications, 2.21%
Tohoku University	Tohoku University, 509, 2.19% Tohoku University 509 publications, 2.19%
Hokkaido University	Hokkaido University, 416, 1.79% Hokkaido University 416 publications, 1.79%
Osaka University	Osaka University, 397, 1.71% Osaka University 397 publications, 1.71%
Nagasaki University	Nagasaki University, 395, 1.7% Nagasaki University 395 publications, 1.7%
Nagoya University	Nagoya University, 323, 1.39% Nagoya University 323 publications, 1.39%
Hiroshima University	Hiroshima University, 286, 1.23% Hiroshima University 286 publications, 1.23%
University of Tsukuba	University of Tsukuba, 272, 1.17% University of Tsukuba 272 publications, 1.17%
Niigata University	Niigata University, 249, 1.07% Niigata University 249 publications, 1.07%
Kobe University	Kobe University, 244, 1.05% Kobe University 244 publications, 1.05%
Keio University	Keio University, 242, 1.04% Keio University 242 publications, 1.04%
Saga University	Saga University, 210, 0.9% Saga University 210 publications, 0.9%
Osaka Metropolitan University	Osaka Metropolitan University, 203, 0.87% Osaka Metropolitan University 203 publications, 0.87%
National Institute of Advanced Industrial Science and Technology	National Institute of Advanced Industrial Science and Technology, 200, 0.86% National Institute of Advanced Industrial Science and Technology 200 publications, 0.86%
Okayama University	Okayama University, 194, 0.83% Okayama University 194 publications, 0.83%
Kumamoto University	Kumamoto University, 187, 0.8% Kumamoto University 187 publications, 0.8%
Fukuoka University	Fukuoka University, 183, 0.79% Fukuoka University 183 publications, 0.79%
Ehime University	Ehime University, 179, 0.77% Ehime University 179 publications, 0.77%
Chiba University	Chiba University, 170, 0.73% Chiba University 170 publications, 0.73%
University of Miyazaki	University of Miyazaki, 162, 0.7% University of Miyazaki 162 publications, 0.7%
Kitasato University	Kitasato University, 159, 0.68% Kitasato University 159 publications, 0.68%
Kurume University	Kurume University, 153, 0.66% Kurume University 153 publications, 0.66%
RIKEN-Institute of Physical and Chemical Research	RIKEN-Institute of Physical and Chemical Research, 151, 0.65% RIKEN-Institute of Physical and Chemical Research 151 publications, 0.65%
University of the Ryukyus Hospital	University of the Ryukyus Hospital, 147, 0.63% University of the Ryukyus Hospital 147 publications, 0.63%
Tokai University	Tokai University, 145, 0.62% Tokai University 145 publications, 0.62%
Yokohama City University	Yokohama City University, 141, 0.61% Yokohama City University 141 publications, 0.61%
Okinawa Institute of Science and Technology Graduate University	Okinawa Institute of Science and Technology Graduate University, 135, 0.58% Okinawa Institute of Science and Technology Graduate University 135 publications, 0.58%
	200 400 600 800 1000 1200

With foreign organizations

	10 20 30 40 50 60 70 80 90
National University of Singapore	National University of Singapore, 83, 1.35% National University of Singapore 83 publications, 1.35%
National Taiwan University	National Taiwan University, 73, 1.19% National Taiwan University 73 publications, 1.19%
James Cook University	James Cook University, 61, 1% James Cook University 61 publications, 1%
University of California, San Diego	University of California, San Diego, 61, 1% University of California, San Diego 61 publications, 1%
Harvard University	Harvard University, 59, 0.96% Harvard University 59 publications, 0.96%
Aswan University	Aswan University, 54, 0.88% Aswan University 54 publications, 0.88%
Diponegoro University	Diponegoro University, 52, 0.85% Diponegoro University 52 publications, 0.85%
Imperial College London	Imperial College London, 48, 0.78% Imperial College London 48 publications, 0.78%
Zagazig University	Zagazig University, 46, 0.75% Zagazig University 46 publications, 0.75%
University of Sydney	University of Sydney, 44, 0.72% University of Sydney 44 publications, 0.72%
University of Queensland	University of Queensland, 42, 0.69% University of Queensland 42 publications, 0.69%
Khon Kaen University	Khon Kaen University, 40, 0.65% Khon Kaen University 40 publications, 0.65%
Shanmugha Arts, Science, Technology & Research Academy	Shanmugha Arts, Science, Technology & Research Academy, 39, 0.64% Shanmugha Arts, Science, Technology & Research Academy 39 publications, 0.64%
University of Michigan	University of Michigan, 39, 0.64% University of Michigan 39 publications, 0.64%
National Yang Ming Chiao Tung University	National Yang Ming Chiao Tung University, 36, 0.59% National Yang Ming Chiao Tung University 36 publications, 0.59%
Naturalis Biodiversity Center	Naturalis Biodiversity Center, 35, 0.57% Naturalis Biodiversity Center 35 publications, 0.57%
Australian Research Council Centre of Excellence for Coral Reef Studies	Australian Research Council Centre of Excellence for Coral Reef Studies, 34, 0.55% Australian Research Council Centre of Excellence for Coral Reef Studies 34 publications, 0.55%
Ioffe Physical-Technical Institute of the Russian Academy of Sciences	Ioffe Physical-Technical Institute of the Russian Academy of Sciences, 33, 0.54% Ioffe Physical-Technical Institute of the Russian Academy of Sciences 33 publications, 0.54%
University of Oxford	University of Oxford, 31, 0.51% University of Oxford 31 publications, 0.51%
Sam Ratulangi University	Sam Ratulangi University, 31, 0.51% Sam Ratulangi University 31 publications, 0.51%
Sungkyunkwan University	Sungkyunkwan University, 31, 0.51% Sungkyunkwan University 31 publications, 0.51%
University of Texas at El Paso	University of Texas at El Paso, 31, 0.51% University of Texas at El Paso 31 publications, 0.51%
University of Illinois Urbana-Champaign	University of Illinois Urbana-Champaign, 30, 0.49% University of Illinois Urbana-Champaign 30 publications, 0.49%
National Taiwan Normal University	National Taiwan Normal University, 29, 0.47% National Taiwan Normal University 29 publications, 0.47%
Jeju National University	Jeju National University, 29, 0.47% Jeju National University 29 publications, 0.47%
University of the Philippines Manila	University of the Philippines Manila, 29, 0.47% University of the Philippines Manila 29 publications, 0.47%
University of Copenhagen	University of Copenhagen, 28, 0.46% University of Copenhagen 28 publications, 0.46%
Kasetsart University	Kasetsart University, 28, 0.46% Kasetsart University 28 publications, 0.46%
Taipei Veterans General Hospital	Taipei Veterans General Hospital, 27, 0.44% Taipei Veterans General Hospital 27 publications, 0.44%
Financial University under the Government of the Russian Federation	Financial University under the Government of the Russian Federation, 25, 0.41% Financial University under the Government of the Russian Federation 25 publications, 0.41%
	10 20 30 40 50 60 70 80 90

With other countries

	200 400 600 800 1000 1200
USA	USA, 1082, 6.01% USA 1082 publications, 6.01%
China	China, 536, 2.98% China 536 publications, 2.98%
Australia	Australia, 268, 1.49% Australia 268 publications, 1.49%
United Kingdom	United Kingdom, 265, 1.47% United Kingdom 265 publications, 1.47%
Germany	Germany, 231, 1.28% Germany 231 publications, 1.28%
Indonesia	Indonesia, 229, 1.27% Indonesia 229 publications, 1.27%
Republic of Korea	Republic of Korea, 204, 1.13% Republic of Korea 204 publications, 1.13%
France	France, 188, 1.04% France 188 publications, 1.04%
Thailand	Thailand, 166, 0.92% Thailand 166 publications, 0.92%
India	India, 159, 0.88% India 159 publications, 0.88%
Bangladesh	Bangladesh, 136, 0.76% Bangladesh 136 publications, 0.76%
Egypt	Egypt, 133, 0.74% Egypt 133 publications, 0.74%
Russia	Russia, 130, 0.72% Russia 130 publications, 0.72%
Canada	Canada, 121, 0.67% Canada 121 publications, 0.67%
Italy	Italy, 106, 0.59% Italy 106 publications, 0.59%
Malaysia	Malaysia, 106, 0.59% Malaysia 106 publications, 0.59%
Singapore	Singapore, 101, 0.56% Singapore 101 publications, 0.56%
Brazil	Brazil, 95, 0.53% Brazil 95 publications, 0.53%
Vietnam	Vietnam, 90, 0.5% Vietnam 90 publications, 0.5%
Philippines	Philippines, 89, 0.49% Philippines 89 publications, 0.49%
Netherlands	Netherlands, 82, 0.46% Netherlands 82 publications, 0.46%
Saudi Arabia	Saudi Arabia, 80, 0.44% Saudi Arabia 80 publications, 0.44%
Spain	Spain, 67, 0.37% Spain 67 publications, 0.37%
Switzerland	Switzerland, 55, 0.31% Switzerland 55 publications, 0.31%
Iran	Iran, 49, 0.27% Iran 49 publications, 0.27%
Belgium	Belgium, 48, 0.27% Belgium 48 publications, 0.27%
Poland	Poland, 46, 0.26% Poland 46 publications, 0.26%
Laos	Laos, 44, 0.24% Laos 44 publications, 0.24%
New Zealand	New Zealand, 43, 0.24% New Zealand 43 publications, 0.24%
	200 400 600 800 1000 1200

We do not take into account publications without a DOI.
Statistics recalculated daily.
Publications published earlier than 1969 are ignored in the statistics.
The horizontal charts show the 30 top positions.
Journals quartiles values are relevant at the moment.