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The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 211 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 5 years. As of Sep 02, 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 (1.122.044) 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 Index Rankings
Rankings
5,401
World Rank
18
Country Rank
2
University
Ranking Based On Selection:
1
Engineering & Technology / Aerospace Engineering
Hydrogen energy | Bioenergy | Clean energy | Thermoelectric generation | CO2 capture and utilizaito
Hydrogen energy | Bioenergy | Clean energy | Thermoelectric generation | CO2 capture and utilizaito
H-Index Metrics
-
H-Index117
-
i10 Index675
-
Citation Counts58,934
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Premium Data
* Total H Index Rankings
Rankings
41,141
World Rank
182
Country Rank
5
University
Ranking Based On Selection:
2
* Total H Index Rankings
Rankings
87,057
World Rank
462
Country Rank
36
University
Ranking Based On Selection:
3
Engineering & Technology / Aerospace Engineering
Algal Biotechnology | Biorefinery & Bioeconomy | High value-Bioproducts | Biofuels | Thermochemical conversio
Algal Biotechnology | Biorefinery & Bioeconomy | High value-Bioproducts | Biofuels | Thermochemical conversio
H-Index Metrics
-
H-Index50
-
i10 Index99
-
Citation Counts8,003
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Premium Data
* Total H Index Rankings
Rankings
88,677
World Rank
471
Country Rank
30
University
Ranking Based On Selection:
4
* Total H Index Rankings
Rankings
307,155
World Rank
2,012
Country Rank
68
University
Ranking Based On Selection:
5
* Total H Index Rankings
Rankings
311,900
World Rank
2,040
Country Rank
84
University
Ranking Based On Selection:
6
* Total H Index Rankings
Rankings
313,266
World Rank
2,046
Country Rank
70
University
Ranking Based On Selection:
7
* Total H Index Rankings
Rankings
356,284
World Rank
2,361
Country Rank
188
University
Ranking Based On Selection:
8
Engineering & Technology / Aerospace Engineering
bioenergy | torrefaction | pyrolysis | hydrogen production and purification | DME synthesi
bioenergy | torrefaction | pyrolysis | hydrogen production and purification | DME synthesi
H-Index Metrics
-
H-Index25
-
i10 Index30
-
Citation Counts3,471
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Premium Data
* Total H Index Rankings
Rankings
361,990
World Rank
2,398
Country Rank
13
University
Ranking Based On Selection:
9
* Total H Index Rankings
Rankings
407,404
World Rank
2,721
Country Rank
91
University
Ranking Based On Selection:
10
Engineering & Technology / Aerospace Engineering
Satellite Altimetry | Coastal Altimetry | Remote Sensing | Ionosphere | Climate Chang
Satellite Altimetry | Coastal Altimetry | Remote Sensing | Ionosphere | Climate Chang
H-Index Metrics
-
H-Index24
-
i10 Index34
-
Citation Counts1,865
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Premium Data
* Total H Index Rankings
Rankings
419,465
World Rank
2,823
Country Rank
93
University
Ranking Based On Selection:
11
* Total H Index Rankings
Rankings
428,999
World Rank
2,886
Country Rank
69
University
Ranking Based On Selection:
12
* Total H Index Rankings
Rankings
429,713
World Rank
2,890
Country Rank
94
University
Ranking Based On Selection:
13
Engineering & Technology / Aerospace Engineering
Geomorphology | Hydrology | Landslide | Hazard | GI
Geomorphology | Hydrology | Landslide | Hazard | GI
H-Index Metrics
-
H-Index22
-
i10 Index28
-
Citation Counts1,741
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Premium Data
* Total H Index Rankings
Rankings
436,507
World Rank
2,936
Country Rank
174
University
Ranking Based On Selection:
14
* Total H Index Rankings
Rankings
455,241
World Rank
3,059
Country Rank
230
University
Ranking Based On Selection:
15
* Total H Index Rankings
Rankings
486,558
World Rank
3,270
Country Rank
67
University
Ranking Based On Selection:
16
Engineering & Technology / Aerospace Engineering
Astrophysics | Star Formation | Interstellar Medium | Turbulenc
Astrophysics | Star Formation | Interstellar Medium | Turbulenc
H-Index Metrics
-
H-Index20
-
i10 Index24
-
Citation Counts1,127
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Premium Data
* Total H Index Rankings
Rankings
580,929
World Rank
3,904
Country Rank
136
University
Ranking Based On Selection:
17
* Total H Index Rankings
Rankings
624,107
World Rank
4,184
Country Rank
149
University
Ranking Based On Selection:
18
* Total H Index Rankings
Rankings
705,583
World Rank
4,714
Country Rank
11
University
Ranking Based On Selection:
19
Engineering & Technology / Aerospace Engineering
AI Vehicle | AI Drone | Autonomous Driving System | Wireless Communicatio
AI Vehicle | AI Drone | Autonomous Driving System | Wireless Communicatio
H-Index Metrics
-
H-Index15
-
i10 Index20
-
Citation Counts660
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Premium Data
* Total H Index Rankings
Rankings
743,500
World Rank
4,936
Country Rank
172
University
Ranking Based On Selection:
20
Engineering & Technology / Aerospace Engineering
WebGIS | Internet of Things | Digital Twin | Image Recognition | HC
WebGIS | Internet of Things | Digital Twin | Image Recognition | HC
H-Index Metrics
-
H-Index14
-
i10 Index21
-
Citation Counts716
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Premium Data
* Total H Index Rankings
Rankings
886,422
World Rank
5,821
Country Rank
318
University
Ranking Based On Selection:
21
Engineering & Technology / Aerospace Engineering
III-V Nitride Devices | Solid State Sensor | Nanocrystal Memor
III-V Nitride Devices | Solid State Sensor | Nanocrystal Memor
H-Index Metrics
-
H-Index12
-
i10 Index13
-
Citation Counts585
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Premium Data
* Total H Index Rankings
Rankings
1,040,611
World Rank
6,632
Country Rank
56
University
Ranking Based On Selection:
22
Engineering & Technology / Aerospace Engineering
Computational Fluid Dynamics | Combustion | Turbulenc
Computational Fluid Dynamics | Combustion | Turbulenc
H-Index Metrics
-
H-Index10
-
i10 Index10
-
Citation Counts322
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Premium Data
* Total H Index Rankings
Rankings
1,108,383
World Rank
6,992
Country Rank
414
University
Ranking Based On Selection:
23
Engineering & Technology / Aerospace Engineering
Aerospace engineering | fluid dynamics | flow diagnostics | rocket | propulsio
Aerospace engineering | fluid dynamics | flow diagnostics | rocket | propulsio
H-Index Metrics
-
H-Index9
-
i10 Index7
-
Citation Counts281
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Premium Data
* Total H Index Rankings
Rankings
1,135,339
World Rank
7,124
Country Rank
69
University
Ranking Based On Selection:
24
Engineering & Technology / Aerospace Engineering
Nonlinear Vibration | Vibration Energy Harvester | Aeroelasticit
Nonlinear Vibration | Vibration Energy Harvester | Aeroelasticit
H-Index Metrics
-
H-Index9
-
i10 Index8
-
Citation Counts201
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Premium Data
* Total H Index Rankings
Rankings
1,235,595
World Rank
7,655
Country Rank
250
University
Ranking Based On Selection:
25
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