University of the Ryukyus

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Short name

Ryūdai

Country, city

Japan, Okinawa

02z1n9q24

Organization website

Publications

16 181

Citations

273 916

h-index

166

Top-3 journals

Orthopedics & Traumatology (245 publications)

Journal of the Physical Society of Japan (239 publications)

Scientific Reports (171 publications)

Top-3 organizations

University of Tokyo (1133 publications)

Kagoshima University (690 publications)

Kyoto University (690 publications)

Top-3 foreign organizations

National Taiwan University (88 publications)

National University of Singapore (88 publications)

James Cook University (74 publications)

Most cited in 5 years

Found

Publication title

Publisher

Journal

Countries

Found

Since 1964

Total publications

16181

Total citations

273916

Citations per publication

16.93

Average publications per year

256.84

Average authors per publication

6.68

h-index

166

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, 2128, 13.15% General Medicine 2128 publications, 13.15%
Ecology, Evolution, Behavior and Systematics	Ecology, Evolution, Behavior and Systematics, 1171, 7.24% Ecology, Evolution, Behavior and Systematics 1171 publications, 7.24%
Biochemistry	Biochemistry, 757, 4.68% Biochemistry 757 publications, 4.68%
Molecular Biology	Molecular Biology, 703, 4.34% Molecular Biology 703 publications, 4.34%
Aquatic Science	Aquatic Science, 686, 4.24% Aquatic Science 686 publications, 4.24%
Animal Science and Zoology	Animal Science and Zoology, 599, 3.7% Animal Science and Zoology 599 publications, 3.7%
General Physics and Astronomy	General Physics and Astronomy, 545, 3.37% General Physics and Astronomy 545 publications, 3.37%
Genetics	Genetics, 543, 3.36% Genetics 543 publications, 3.36%
Oncology	Oncology, 498, 3.08% Oncology 498 publications, 3.08%
Infectious Diseases	Infectious Diseases, 494, 3.05% Infectious Diseases 494 publications, 3.05%
Electrical and Electronic Engineering	Electrical and Electronic Engineering, 479, 2.96% Electrical and Electronic Engineering 479 publications, 2.96%
Immunology	Immunology, 447, 2.76% Immunology 447 publications, 2.76%
Plant Science	Plant Science, 427, 2.64% Plant Science 427 publications, 2.64%
Cell Biology	Cell Biology, 420, 2.6% Cell Biology 420 publications, 2.6%
Cancer Research	Cancer Research, 382, 2.36% Cancer Research 382 publications, 2.36%
Physiology	Physiology, 380, 2.35% Physiology 380 publications, 2.35%
Cardiology and Cardiovascular Medicine	Cardiology and Cardiovascular Medicine, 359, 2.22% Cardiology and Cardiovascular Medicine 359 publications, 2.22%
Pharmacology	Pharmacology, 354, 2.19% Pharmacology 354 publications, 2.19%
Condensed Matter Physics	Condensed Matter Physics, 347, 2.14% Condensed Matter Physics 347 publications, 2.14%
Multidisciplinary	Multidisciplinary, 343, 2.12% Multidisciplinary 343 publications, 2.12%
Ecology	Ecology, 339, 2.1% Ecology 339 publications, 2.1%
Microbiology	Microbiology, 321, 1.98% Microbiology 321 publications, 1.98%
General Chemistry	General Chemistry, 316, 1.95% General Chemistry 316 publications, 1.95%
Organic Chemistry	Organic Chemistry, 299, 1.85% Organic Chemistry 299 publications, 1.85%
General Biochemistry, Genetics and Molecular Biology	General Biochemistry, Genetics and Molecular Biology, 295, 1.82% General Biochemistry, Genetics and Molecular Biology 295 publications, 1.82%
Virology	Virology, 281, 1.74% Virology 281 publications, 1.74%
Oceanography	Oceanography, 276, 1.71% Oceanography 276 publications, 1.71%
Internal Medicine	Internal Medicine, 270, 1.67% Internal Medicine 270 publications, 1.67%
Drug Discovery	Drug Discovery, 268, 1.66% Drug Discovery 268 publications, 1.66%
Surgery	Surgery, 259, 1.6% Surgery 259 publications, 1.6%
	500 1000 1500 2000 2500

Journals

	50 100 150 200 250
Orthopedics & Traumatology	Orthopedics & Traumatology, 245, 1.51% Orthopedics & Traumatology 245 publications, 1.51%
Journal of the Physical Society of Japan	Journal of the Physical Society of Japan, 239, 1.48% Journal of the Physical Society of Japan 239 publications, 1.48%
Scientific Reports	Scientific Reports, 171, 1.06% Scientific Reports 171 publications, 1.06%
Zoological Science	Zoological Science, 134, 0.83% Zoological Science 134 publications, 0.83%
Internal Medicine	Internal Medicine, 113, 0.7% Internal Medicine 113 publications, 0.7%
PLoS ONE	PLoS ONE, 110, 0.68% PLoS ONE 110 publications, 0.68%
Medical Entomology and Zoology	Medical Entomology and Zoology, 109, 0.67% Medical Entomology and Zoology 109 publications, 0.67%
Coral Reefs	Coral Reefs, 103, 0.64% Coral Reefs 103 publications, 0.64%
The Proceedings of Conference of Kyushu Branch	The Proceedings of Conference of Kyushu Branch, 100, 0.62% The Proceedings of Conference of Kyushu Branch 100 publications, 0.62%
Ichthyological Research	Ichthyological Research, 95, 0.59% Ichthyological Research 95 publications, 0.59%
Zootaxa	Zootaxa, 84, 0.52% Zootaxa 84 publications, 0.52%
Journal of Dermatology	Journal of Dermatology, 79, 0.49% Journal of Dermatology 79 publications, 0.49%
Hypertension Research	Hypertension Research, 76, 0.47% Hypertension Research 76 publications, 0.47%
Microbiology and Immunology	Microbiology and Immunology, 75, 0.46% Microbiology and Immunology 75 publications, 0.46%
Journal of Physics: Conference Series	Journal of Physics: Conference Series, 71, 0.44% Journal of Physics: Conference Series 71 publications, 0.44%
Blood	Blood, 68, 0.42% Blood 68 publications, 0.42%
IEEJ Transactions on Industry Applications	IEEJ Transactions on Industry Applications, 65, 0.4% IEEJ Transactions on Industry Applications 65 publications, 0.4%
IEEJ Transactions on Electronics, Information and Systems	IEEJ Transactions on Electronics, Information and Systems, 64, 0.4% IEEJ Transactions on Electronics, Information and Systems 64 publications, 0.4%
Journal of Architecture and Planning (Transactions of AIJ)	Journal of Architecture and Planning (Transactions of AIJ), 63, 0.39% Journal of Architecture and Planning (Transactions of AIJ) 63 publications, 0.39%
Journal of Infection and Chemotherapy	Journal of Infection and Chemotherapy, 62, 0.38% Journal of Infection and Chemotherapy 62 publications, 0.38%
Galaxea Journal of Coral Reef Studies	Galaxea Journal of Coral Reef Studies, 62, 0.38% Galaxea Journal of Coral Reef Studies 62 publications, 0.38%
IEEJ Transactions on Power and Energy	IEEJ Transactions on Power and Energy, 60, 0.37% IEEJ Transactions on Power and Energy 60 publications, 0.37%
The Proceedings of the Annual Convention of the Japanese Psychological Association	The Proceedings of the Annual Convention of the Japanese Psychological Association, 59, 0.36% The Proceedings of the Annual Convention of the Japanese Psychological Association 59 publications, 0.36%
Sustainability	Sustainability, 55, 0.34% Sustainability 55 publications, 0.34%
Energies	Energies, 55, 0.34% Energies 55 publications, 0.34%
Physical Review D	Physical Review D, 54, 0.33% Physical Review D 54 publications, 0.33%
Physical Review B	Physical Review B, 52, 0.32% Physical Review B 52 publications, 0.32%
Bioscience, Biotechnology and Biochemistry	Bioscience, Biotechnology and Biochemistry, 51, 0.32% Bioscience, Biotechnology and Biochemistry 51 publications, 0.32%
Biochemical and Biophysical Research Communications	Biochemical and Biophysical Research Communications, 50, 0.31% Biochemical and Biophysical Research Communications 50 publications, 0.31%
Lecture Notes in Computer Science	Lecture Notes in Computer Science, 49, 0.3% Lecture Notes in Computer Science 49 publications, 0.3%
	50 100 150 200 250

Publishers

	500 1000 1500 2000 2500 3000 3500
Elsevier	Elsevier, 3053, 18.87% Elsevier 3053 publications, 18.87%
Springer Nature	Springer Nature, 2869, 17.73% Springer Nature 2869 publications, 17.73%
Wiley	Wiley, 1674, 10.35% Wiley 1674 publications, 10.35%
MDPI	MDPI, 519, 3.21% MDPI 519 publications, 3.21%
Oxford University Press	Oxford University Press, 456, 2.82% Oxford University Press 456 publications, 2.82%
Japan Society of Mechanical Engineers	Japan Society of Mechanical Engineers, 449, 2.77% Japan Society of Mechanical Engineers 449 publications, 2.77%
Taylor & Francis	Taylor & Francis, 444, 2.74% Taylor & Francis 444 publications, 2.74%
West-Japanese Society of Orthopedics & Traumatology	West-Japanese Society of Orthopedics & Traumatology, 245, 1.51% West-Japanese Society of Orthopedics & Traumatology 245 publications, 1.51%
Physical Society of Japan	Physical Society of Japan, 239, 1.48% Physical Society of Japan 239 publications, 1.48%
Institute of Electrical Engineers of Japan (IEE Japan)	Institute of Electrical Engineers of Japan (IEE Japan), 193, 1.19% Institute of Electrical Engineers of Japan (IEE Japan) 193 publications, 1.19%
Ovid Technologies (Wolters Kluwer Health)	Ovid Technologies (Wolters Kluwer Health), 177, 1.09% Ovid Technologies (Wolters Kluwer Health) 177 publications, 1.09%
Japanese Society of Internal Medicine	Japanese Society of Internal Medicine, 153, 0.95% Japanese Society of Internal Medicine 153 publications, 0.95%
IOP Publishing	IOP Publishing, 148, 0.91% IOP Publishing 148 publications, 0.91%
SAGE	SAGE, 144, 0.89% SAGE 144 publications, 0.89%
Public Library of Science (PLoS)	Public Library of Science (PLoS), 137, 0.85% Public Library of Science (PLoS) 137 publications, 0.85%
American Physical Society (APS)	American Physical Society (APS), 134, 0.83% American Physical Society (APS) 134 publications, 0.83%
Zoological Society of Japan	Zoological Society of Japan, 134, 0.83% Zoological Society of Japan 134 publications, 0.83%
American Chemical Society (ACS)	American Chemical Society (ACS), 131, 0.81% American Chemical Society (ACS) 131 publications, 0.81%
Institute of Electrical and Electronics Engineers (IEEE)	Institute of Electrical and Electronics Engineers (IEEE), 131, 0.81% Institute of Electrical and Electronics Engineers (IEEE) 131 publications, 0.81%
American Society for Microbiology	American Society for Microbiology, 127, 0.78% American Society for Microbiology 127 publications, 0.78%
Architectural Institute of Japan	Architectural Institute of Japan, 120, 0.74% Architectural Institute of Japan 120 publications, 0.74%
Frontiers Media S.A.	Frontiers Media S.A., 116, 0.72% Frontiers Media S.A. 116 publications, 0.72%
Japan Society of Medical Entomology an Zoology	Japan Society of Medical Entomology an Zoology, 109, 0.67% Japan Society of Medical Entomology an Zoology 109 publications, 0.67%
Japanese Coral Reef Society	Japanese Coral Reef Society, 108, 0.67% Japanese Coral Reef Society 108 publications, 0.67%
Magnolia Press	Magnolia Press, 104, 0.64% Magnolia Press 104 publications, 0.64%
AIP Publishing	AIP Publishing, 90, 0.56% AIP Publishing 90 publications, 0.56%
Cambridge University Press	Cambridge University Press, 84, 0.52% Cambridge University Press 84 publications, 0.52%
S. Karger AG	S. Karger AG, 75, 0.46% S. Karger AG 75 publications, 0.46%
American Society of Hematology	American Society of Hematology, 69, 0.43% American Society of Hematology 69 publications, 0.43%
BMJ	BMJ, 67, 0.41% BMJ 67 publications, 0.41%
	500 1000 1500 2000 2500 3000 3500

With other organizations

	200 400 600 800 1000 1200
University of Tokyo	University of Tokyo, 1133, 7% University of Tokyo 1133 publications, 7%
Kyoto University	Kyoto University, 690, 4.26% Kyoto University 690 publications, 4.26%
Kagoshima University	Kagoshima University, 690, 4.26% Kagoshima University 690 publications, 4.26%
Kyushu University	Kyushu University, 649, 4.01% Kyushu University 649 publications, 4.01%
Tohoku University	Tohoku University, 572, 3.54% Tohoku University 572 publications, 3.54%
Hokkaido University	Hokkaido University, 482, 2.98% Hokkaido University 482 publications, 2.98%
Osaka University	Osaka University, 447, 2.76% Osaka University 447 publications, 2.76%
Nagasaki University	Nagasaki University, 445, 2.75% Nagasaki University 445 publications, 2.75%
Nagoya University	Nagoya University, 384, 2.37% Nagoya University 384 publications, 2.37%
Hiroshima University	Hiroshima University, 321, 1.98% Hiroshima University 321 publications, 1.98%
University of Tsukuba	University of Tsukuba, 312, 1.93% University of Tsukuba 312 publications, 1.93%
Keio University	Keio University, 285, 1.76% Keio University 285 publications, 1.76%
Niigata University	Niigata University, 279, 1.72% Niigata University 279 publications, 1.72%
Kobe University	Kobe University, 263, 1.63% Kobe University 263 publications, 1.63%
Saga University	Saga University, 252, 1.56% Saga University 252 publications, 1.56%
National Institute of Advanced Industrial Science and Technology	National Institute of Advanced Industrial Science and Technology, 249, 1.54% National Institute of Advanced Industrial Science and Technology 249 publications, 1.54%
Osaka Metropolitan University	Osaka Metropolitan University, 244, 1.51% Osaka Metropolitan University 244 publications, 1.51%
Okayama University	Okayama University, 224, 1.38% Okayama University 224 publications, 1.38%
Kumamoto University	Kumamoto University, 224, 1.38% Kumamoto University 224 publications, 1.38%
Fukuoka University	Fukuoka University, 224, 1.38% Fukuoka University 224 publications, 1.38%
University of the Ryukyus Hospital	University of the Ryukyus Hospital, 218, 1.35% University of the Ryukyus Hospital 218 publications, 1.35%
Chiba University	Chiba University, 199, 1.23% Chiba University 199 publications, 1.23%
Ehime University	Ehime University, 197, 1.22% Ehime University 197 publications, 1.22%
University of Miyazaki	University of Miyazaki, 195, 1.21% University of Miyazaki 195 publications, 1.21%
Kurume University	Kurume University, 188, 1.16% Kurume University 188 publications, 1.16%
Kitasato University	Kitasato University, 187, 1.16% Kitasato University 187 publications, 1.16%
Yokohama City University	Yokohama City University, 177, 1.09% Yokohama City University 177 publications, 1.09%
RIKEN-Institute of Physical and Chemical Research	RIKEN-Institute of Physical and Chemical Research, 164, 1.01% RIKEN-Institute of Physical and Chemical Research 164 publications, 1.01%
Tokai University	Tokai University, 160, 0.99% Tokai University 160 publications, 0.99%
Japan Agency for Marine-Earth Science and Technology	Japan Agency for Marine-Earth Science and Technology, 153, 0.95% Japan Agency for Marine-Earth Science and Technology 153 publications, 0.95%
	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, 88, 0.54% National University of Singapore 88 publications, 0.54%
National Taiwan University	National Taiwan University, 88, 0.54% National Taiwan University 88 publications, 0.54%
James Cook University	James Cook University, 74, 0.46% James Cook University 74 publications, 0.46%
University of Hawaiʻi at Mānoa	University of Hawaiʻi at Mānoa, 69, 0.43% University of Hawaiʻi at Mānoa 69 publications, 0.43%
Diponegoro University	Diponegoro University, 66, 0.41% Diponegoro University 66 publications, 0.41%
University of California, San Diego	University of California, San Diego, 64, 0.4% University of California, San Diego 64 publications, 0.4%
Harvard University	Harvard University, 63, 0.39% Harvard University 63 publications, 0.39%
Biodiversity Research Center, Academia Sinica	Biodiversity Research Center, Academia Sinica, 62, 0.38% Biodiversity Research Center, Academia Sinica 62 publications, 0.38%
Zagazig University	Zagazig University, 61, 0.38% Zagazig University 61 publications, 0.38%
Aswan University	Aswan University, 61, 0.38% Aswan University 61 publications, 0.38%
Imperial College London	Imperial College London, 53, 0.33% Imperial College London 53 publications, 0.33%
University of Sydney	University of Sydney, 52, 0.32% University of Sydney 52 publications, 0.32%
University of Queensland	University of Queensland, 47, 0.29% University of Queensland 47 publications, 0.29%
Shanmugha Arts, Science, Technology & Research Academy	Shanmugha Arts, Science, Technology & Research Academy, 44, 0.27% Shanmugha Arts, Science, Technology & Research Academy 44 publications, 0.27%
University of Michigan	University of Michigan, 43, 0.27% University of Michigan 43 publications, 0.27%
Khon Kaen University	Khon Kaen University, 42, 0.26% Khon Kaen University 42 publications, 0.26%
Naturalis Biodiversity Center	Naturalis Biodiversity Center, 42, 0.26% Naturalis Biodiversity Center 42 publications, 0.26%
Australian Research Council Centre of Excellence for Coral Reef Studies	Australian Research Council Centre of Excellence for Coral Reef Studies, 39, 0.24% Australian Research Council Centre of Excellence for Coral Reef Studies 39 publications, 0.24%
National Taiwan Normal University	National Taiwan Normal University, 37, 0.23% National Taiwan Normal University 37 publications, 0.23%
National Yang Ming Chiao Tung University	National Yang Ming Chiao Tung University, 36, 0.22% National Yang Ming Chiao Tung University 36 publications, 0.22%
Chulalongkorn University	Chulalongkorn University, 36, 0.22% Chulalongkorn University 36 publications, 0.22%
University of Oxford	University of Oxford, 34, 0.21% University of Oxford 34 publications, 0.21%
University of Copenhagen	University of Copenhagen, 34, 0.21% University of Copenhagen 34 publications, 0.21%
Sam Ratulangi University	Sam Ratulangi University, 34, 0.21% Sam Ratulangi University 34 publications, 0.21%
University of Illinois Urbana-Champaign	University of Illinois Urbana-Champaign, 34, 0.21% University of Illinois Urbana-Champaign 34 publications, 0.21%
Ioffe Physical-Technical Institute of the Russian Academy of Sciences	Ioffe Physical-Technical Institute of the Russian Academy of Sciences, 33, 0.2% Ioffe Physical-Technical Institute of the Russian Academy of Sciences 33 publications, 0.2%
Sungkyunkwan University	Sungkyunkwan University, 33, 0.2% Sungkyunkwan University 33 publications, 0.2%
University of Texas at El Paso	University of Texas at El Paso, 33, 0.2% University of Texas at El Paso 33 publications, 0.2%
University of the Philippines Manila	University of the Philippines Manila, 32, 0.2% University of the Philippines Manila 32 publications, 0.2%
Jeju National University	Jeju National University, 31, 0.19% Jeju National University 31 publications, 0.19%
	10 20 30 40 50 60 70 80 90

With other countries

	200 400 600 800 1000 1200
USA	USA, 1136, 7.02% USA 1136 publications, 7.02%
China	China, 567, 3.5% China 567 publications, 3.5%
Australia	Australia, 278, 1.72% Australia 278 publications, 1.72%
United Kingdom	United Kingdom, 277, 1.71% United Kingdom 277 publications, 1.71%
Indonesia	Indonesia, 243, 1.5% Indonesia 243 publications, 1.5%
Germany	Germany, 239, 1.48% Germany 239 publications, 1.48%
Republic of Korea	Republic of Korea, 211, 1.3% Republic of Korea 211 publications, 1.3%
France	France, 190, 1.17% France 190 publications, 1.17%
Thailand	Thailand, 173, 1.07% Thailand 173 publications, 1.07%
India	India, 168, 1.04% India 168 publications, 1.04%
Bangladesh	Bangladesh, 142, 0.88% Bangladesh 142 publications, 0.88%
Egypt	Egypt, 140, 0.87% Egypt 140 publications, 0.87%
Russia	Russia, 135, 0.83% Russia 135 publications, 0.83%
Canada	Canada, 127, 0.78% Canada 127 publications, 0.78%
Malaysia	Malaysia, 114, 0.7% Malaysia 114 publications, 0.7%
Italy	Italy, 110, 0.68% Italy 110 publications, 0.68%
Singapore	Singapore, 104, 0.64% Singapore 104 publications, 0.64%
Brazil	Brazil, 100, 0.62% Brazil 100 publications, 0.62%
Philippines	Philippines, 93, 0.57% Philippines 93 publications, 0.57%
Vietnam	Vietnam, 92, 0.57% Vietnam 92 publications, 0.57%
Netherlands	Netherlands, 89, 0.55% Netherlands 89 publications, 0.55%
Saudi Arabia	Saudi Arabia, 82, 0.51% Saudi Arabia 82 publications, 0.51%
Spain	Spain, 70, 0.43% Spain 70 publications, 0.43%
Switzerland	Switzerland, 55, 0.34% Switzerland 55 publications, 0.34%
Iran	Iran, 50, 0.31% Iran 50 publications, 0.31%
Belgium	Belgium, 49, 0.3% Belgium 49 publications, 0.3%
Poland	Poland, 48, 0.3% Poland 48 publications, 0.3%
Laos	Laos, 45, 0.28% Laos 45 publications, 0.28%
New Zealand	New Zealand, 45, 0.28% New Zealand 45 publications, 0.28%
	200 400 600 800 1000 1200

We do not take into account publications without a DOI.
Statistics recalculated daily.
Publications published earlier than 1964 are ignored in the statistics.
The horizontal charts show the 30 top positions.
Journals quartiles values are relevant at the moment.