University, Subject, Country, Region, World
Japan 153 Scientists Subject Rankings - 2025
The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 197 sub-branches at global, national, and regional levels. These analyses are based on indicators such as the H-index, i10-index, and citation count, including their values from the last 6 years. As of Jan 31, 2025, the rankings are determined according to the Total H Index. BETA VERSION: The subject field rankings for the world, regions, countries, and universities are currently in their Beta phase. This is due to the exclusion of (873.690) scientists categorized under ‘Others’, whose profiles have yet to be determined, edited, or classified. As updates are made to these fields, the rankings will be adjusted accordingly. Note: Please keep this in mind while reviewing the rankings. For further details, explore our [University Subject Rankings].
* Total H IndexRankings
Ranking Based On Selection: 51
Astronomy and Astrophysics
Physics Education
Metrics
H-Index
i10 Index
Citation Counts
28
49
1,969
* Total H IndexRankings
Ranking Based On Selection: 52
Experimental physics
astrophysics
Metrics
H-Index
i10 Index
Citation Counts
28
60
2,927
* Total H IndexRankings
Ranking Based On Selection: 53
CFD
Fluid Dynamics
Aerodynamics
Astrophysics
Metrics
H-Index
i10 Index
Citation Counts
28
58
3,413
* Total H IndexRankings
Ranking Based On Selection: 54
astronomy
astrophysics
solar physics
plasma physics
magnetohydrodynamics
Metrics
H-Index
i10 Index
Citation Counts
27
44
2,240
* Total H IndexRankings
Ranking Based On Selection: 55
Astrophysics
Metrics
H-Index
i10 Index
Citation Counts
27
45
2,748
* Total H IndexRankings
Ranking Based On Selection: 56
aerospace engineering
fluid dynamics
plasma physics
astrophysics
Metrics
H-Index
i10 Index
Citation Counts
27
56
2,665
* Total H IndexRankings
Ranking Based On Selection: 57
Magnetohydrodynamics
Heat transfer
Multiphase flows
Rayleigh-Bénard convection
CFD
Metrics
H-Index
i10 Index
Citation Counts
27
43
2,135
* Total H IndexRankings
Ranking Based On Selection: 58
Astronomy
Galactic Dynamics
Galaxy Formation
Astrometry
Metrics
H-Index
i10 Index
Citation Counts
26
39
2,103
* Total H IndexRankings
Ranking Based On Selection: 59
Mechanics of composite materials
Metrics
H-Index
i10 Index
Citation Counts
26
43
2,424
* Total H IndexRankings
Ranking Based On Selection: 60
Astronomy
Metrics
H-Index
i10 Index
Citation Counts
25
37
3,004
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* Total H IndexRankings
Ranking Based On Selection: 61
Astronomy
Quasars
AGN
Active Galaxies
Metrics
H-Index
i10 Index
Citation Counts
24
40
6,171
* Total H IndexRankings
Ranking Based On Selection: 62
astrophysics
astronomy
Metrics
H-Index
i10 Index
Citation Counts
24
34
1,803
* Total H IndexRankings
Ranking Based On Selection: 63
Antarctic ice sheet
Plio-Pleistocene
Accelerator Mass Spectrometry
Cosmogenic nuclides
Radiocarbon dating
Metrics
H-Index
i10 Index
Citation Counts
23
36
2,406
* Total H IndexRankings
Ranking Based On Selection: 64
planetary science
planetary exploration
Metrics
H-Index
i10 Index
Citation Counts
23
34
1,271
* Total H IndexRankings
Ranking Based On Selection: 65
Information Security
Privacy-Preserving
Cloud Computing
Metrics
H-Index
i10 Index
Citation Counts
23
43
1,574
* Total H IndexRankings
Ranking Based On Selection: 66
Semi-active vibration suppression
Space structure
Energy-harvesting
Space debris
MBD
Metrics
H-Index
i10 Index
Citation Counts
23
46
1,715
* Total H IndexRankings
Ranking Based On Selection: 67
Metrics
H-Index
i10 Index
Citation Counts
22
35
1,326
* Total H IndexRankings
Ranking Based On Selection: 68
Astronomy
Metrics
H-Index
i10 Index
Citation Counts
22
38
1,941
* Total H IndexRankings
Ranking Based On Selection: 69
control theory
robust control
flight control
UAV
aerospace
Metrics
H-Index
i10 Index
Citation Counts
22
46
1,842
* Total H IndexRankings
Ranking Based On Selection: 70
Astronomy
Astrophysics
Physics
Metrics
H-Index
i10 Index
Citation Counts
21
33
1,393
* Total H IndexRankings
Ranking Based On Selection: 71
Asian monsoon
precipitation
cloud
diurnal variation
intraseasonal variation
Metrics
H-Index
i10 Index
Citation Counts
21
30
1,469
* Total H IndexRankings
Ranking Based On Selection: 72
Aerospace Engineering
Structural dynamics
Metrics
H-Index
i10 Index
Citation Counts
21
37
1,334
* Total H IndexRankings
Ranking Based On Selection: 73
Composites
Structural Health Monitoring
Aerospace Engineering
Metrics
H-Index
i10 Index
Citation Counts
20
37
2,060
* Total H IndexRankings
Ranking Based On Selection: 74
Aerospace engineering
Metrics
H-Index
i10 Index
Citation Counts
20
35
1,196
* Total H IndexRankings
Ranking Based On Selection: 75
CFD
HPC
Metrics
H-Index
i10 Index
Citation Counts
20
33
1,292
Jerome De Leon
University of Tokyo
Tokyo, Japan
Metrics
H-Index
i10-Index
Citation Counts
28
49
1,969
Astronomy and Astrophysics
Physics Education
Experimental physics
astrophysics
Eiji Shima
Metrics
H-Index
i10-Index
Citation Counts
28
58
3,413
CFD
Fluid Dynamics
Aerodynamics
Astrophysics
Shin Toriumi
Metrics
H-Index
i10-Index
Citation Counts
27
44
2,240
astronomy
astrophysics
solar physics
plasma physics
magnetohydrodynamics
Naofumi Ohnishi
Tohoku University
Sendai, Japan
Metrics
H-Index
i10-Index
Citation Counts
27
56
2,665
aerospace engineering
fluid dynamics
plasma physics
astrophysics
Toshio Tagawa
Tokyo Metropolitan University
Hachioji, Japan
Metrics
H-Index
i10-Index
Citation Counts
27
43
2,135
Magnetohydrodynamics
Heat transfer
Multiphase flows
Rayleigh-Bénard convection
CFD
Junichi Baba (馬場淳一)
Metrics
H-Index
i10-Index
Citation Counts
26
39
2,103
Astronomy
Galactic Dynamics
Galaxy Formation
Astrometry
Shigeki Yashiro
Kyushu University
Fukuoka, Japan
Metrics
H-Index
i10-Index
Citation Counts
26
43
2,424
Mechanics of composite materials
Shingo Hirano
University of Tokyo
Tokyo, Japan
Metrics
H-Index
i10-Index
Citation Counts
25
37
3,004
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Hiroyuki Ikeda
Metrics
H-Index
i10-Index
Citation Counts
24
40
6,171
Astronomy
Quasars
AGN
Active Galaxies
Shigeo S Kimura
Tohoku University
Sendai, Japan
Metrics
H-Index
i10-Index
Citation Counts
24
34
1,803
astrophysics
astronomy
Antarctic ice sheet
Plio-Pleistocene
Accelerator Mass Spectrometry
Cosmogenic nuclides
Radiocarbon dating
Ryuki Hyodo｜兵頭龍樹|兵頭龍樹
Earth-Life Science Institute
Saitama, Japan
Metrics
H-Index
i10-Index
Citation Counts
23
34
1,271
planetary science
planetary exploration
Information Security
Privacy-Preserving
Cloud Computing
Kanjuro Makihara
Tohoku University
Sendai, Japan
Metrics
H-Index
i10-Index
Citation Counts
23
46
1,715
Semi-active vibration suppression
Space structure
Energy-harvesting
Space debris
MBD
Shinji Nakaya
University of Tokyo
Tokyo, Japan
Metrics
H-Index
i10-Index
Citation Counts
22
35
1,326
Kohji Tsumura
Tokyo City University
Tokyo, Japan
Metrics
H-Index
i10-Index
Citation Counts
22
38
1,941
Sato Masayuki
Metrics
H-Index
i10-Index
Citation Counts
22
46
1,842
control theory
robust control
flight control
UAV
aerospace
Astronomy
Astrophysics
Physics
Hatsuki Fujinami
Nagoya University
Nagoya, Japan
Metrics
H-Index
i10-Index
Citation Counts
21
30
1,469
Asian monsoon
precipitation
cloud
diurnal variation
intraseasonal variation
Masakatsu Chiba
Yamato University
Katayamacho, Japan
Metrics
H-Index
i10-Index
Citation Counts
21
37
1,334
Aerospace Engineering
Structural dynamics
Shin-İchi Takeda
Metrics
H-Index
i10-Index
Citation Counts
20
37
2,060
Composites
Structural Health Monitoring
Aerospace Engineering
Aerospace engineering
Ryoji Takaki
Metrics
H-Index
i10-Index
Citation Counts
20
33
1,292