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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 Jan 03, 2026, 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 (1.131.752) 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
4,606
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-Index124
-
i10 Index696
-
Citation Counts63,461
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* Total H Index Rankings
Rankings
39,661
World Rank
176
Country Rank
5
University
Ranking Based On Selection:
2
* Total H Index Rankings
Rankings
78,903
World Rank
412
Country Rank
29
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-Index53
-
i10 Index101
-
Citation Counts8,633
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* Total H Index Rankings
Rankings
84,417
World Rank
454
Country Rank
34
University
Ranking Based On Selection:
4
* Total H Index Rankings
Rankings
306,779
World Rank
2,016
Country Rank
82
University
Ranking Based On Selection:
5
* Total H Index Rankings
Rankings
309,974
World Rank
2,041
Country Rank
65
University
Ranking Based On Selection:
6
* Total H Index Rankings
Rankings
320,478
World Rank
2,135
Country Rank
70
University
Ranking Based On Selection:
7
* Total H Index Rankings
Rankings
322,202
World Rank
2,145
Country Rank
6
University
Ranking Based On Selection:
8
* Total H Index Rankings
Rankings
369,938
World Rank
2,481
Country Rank
191
University
Ranking Based On Selection:
9
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 Index31
-
Citation Counts3,626
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* Total H Index Rankings
Rankings
376,088
World Rank
2,525
Country Rank
13
University
Ranking Based On Selection:
10
* Total H Index Rankings
Rankings
399,559
World Rank
2,701
Country Rank
151
University
Ranking Based On Selection:
11
* Total H Index Rankings
Rankings
401,399
World Rank
2,716
Country Rank
87
University
Ranking Based On Selection:
12
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 Index35
-
Citation Counts1,974
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* Total H Index Rankings
Rankings
410,942
World Rank
2,807
Country Rank
92
University
Ranking Based On Selection:
13
* Total H Index Rankings
Rankings
443,833
World Rank
3,034
Country Rank
73
University
Ranking Based On Selection:
14
* Total H Index Rankings
Rankings
447,710
World Rank
3,046
Country Rank
221
University
Ranking Based On Selection:
15
* Total H Index Rankings
Rankings
447,774
World Rank
3,047
Country Rank
96
University
Ranking Based On Selection:
16
Engineering & Technology / Aerospace Engineering
Geomorphology | Hydrology | Landslide | Hazard | GI
Geomorphology | Hydrology | Landslide | Hazard | GI
H-Index Metrics
-
H-Index22
-
i10 Index28
-
Citation Counts1,798
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* Total H Index Rankings
Rankings
502,304
World Rank
3,428
Country Rank
68
University
Ranking Based On Selection:
17
Engineering & Technology / Aerospace Engineering
Astrophysics | Star Formation | Interstellar Medium | Turbulenc
Astrophysics | Star Formation | Interstellar Medium | Turbulenc
H-Index Metrics
-
H-Index20
-
i10 Index24
-
Citation Counts1,228
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* Total H Index Rankings
Rankings
599,383
World Rank
4,051
Country Rank
142
University
Ranking Based On Selection:
18
* Total H Index Rankings
Rankings
644,363
World Rank
4,364
Country Rank
153
University
Ranking Based On Selection:
19
* Total H Index Rankings
Rankings
685,352
World Rank
4,632
Country Rank
14
University
Ranking Based On Selection:
20
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-Index16
-
i10 Index21
-
Citation Counts691
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* Total H Index Rankings
Rankings
760,843
World Rank
5,090
Country Rank
177
University
Ranking Based On Selection:
21
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 Counts742
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Premium Data
* Total H Index Rankings
Rankings
917,798
World Rank
6,029
Country Rank
328
University
Ranking Based On Selection:
22
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 Counts594
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* Total H Index Rankings
Rankings
1,076,218
World Rank
6,871
Country Rank
62
University
Ranking Based On Selection:
23
Engineering & Technology / Aerospace Engineering
Computational Fluid Dynamics | Combustion | Turbulenc
Computational Fluid Dynamics | Combustion | Turbulenc
H-Index Metrics
-
H-Index10
-
i10 Index11
-
Citation Counts329
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Premium Data
* Total H Index Rankings
Rankings
1,120,149
World Rank
7,113
Country Rank
410
University
Ranking Based On Selection:
24
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 Index8
-
Citation Counts310
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* Total H Index Rankings
Rankings
1,178,715
World Rank
7,384
Country Rank
69
University
Ranking Based On Selection:
25
Engineering & Technology / Aerospace Engineering
Nonlinear Vibration | Vibration Energy Harvester | Aeroelasticit
Nonlinear Vibration | Vibration Energy Harvester | Aeroelasticit
H-Index Metrics
-
H-Index9
-
i10 Index8
-
Citation Counts207
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Premium Data
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