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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 07, 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 (1.131.927) 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
308,024
World Rank
97
Country Rank
1
University
Ranking Based On Selection:
1
Engineering & Technology / Energy Engineering
Biofuels | Biomass | Biotechnology | Chemical Engineering | Waste Utilizatio
Biofuels | Biomass | Biotechnology | Chemical Engineering | Waste Utilizatio
H-Index Metrics
-
H-Index28
-
i10 Index60
-
Citation Counts2,339
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* Total H Index Rankings
Rankings
589,699
World Rank
346
Country Rank
10
University
Ranking Based On Selection:
2
Engineering & Technology / Energy Engineering
Energy Systems | Artificial Environment | HVACR | Thermal Comfort | Air Qualit
Energy Systems | Artificial Environment | HVACR | Thermal Comfort | Air Qualit
H-Index Metrics
-
H-Index18
-
i10 Index28
-
Citation Counts1,313
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* Total H Index Rankings
Rankings
784,042
World Rank
630
Country Rank
27
University
Ranking Based On Selection:
3
* Total H Index Rankings
Rankings
966,226
World Rank
910
Country Rank
10
University
Ranking Based On Selection:
4
Engineering & Technology / Energy Engineering
Energy | Sustainability | Systems Thinking | Poverty Alleviatio
Energy | Sustainability | Systems Thinking | Poverty Alleviatio
H-Index Metrics
-
H-Index11
-
i10 Index12
-
Citation Counts978
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Premium Data
* Total H Index Rankings
Rankings
1,024,999
World Rank
1,023
Country Rank
35
University
Ranking Based On Selection:
5
Engineering & Technology / Energy Engineering
Plant Microbial Fuel Cells | Renewable Energy | Smart Agriculture | Waste-to-Energy Processe
Plant Microbial Fuel Cells | Renewable Energy | Smart Agriculture | Waste-to-Energy Processe
H-Index Metrics
-
H-Index10
-
i10 Index10
-
Citation Counts309
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Premium Data
* Total H Index Rankings
Rankings
1,091,514
World Rank
1,150
Country Rank
42
University
Ranking Based On Selection:
6
* Total H Index Rankings
Rankings
1,216,930
World Rank
1,451
Country Rank
144
University
Ranking Based On Selection:
7
* Total H Index Rankings
Rankings
1,226,545
World Rank
1,482
Country Rank
20
University
Ranking Based On Selection:
8
* Total H Index Rankings
Rankings
1,247,975
World Rank
1,554
Country Rank
8
University
Ranking Based On Selection:
9
* Total H Index Rankings
Rankings
1,286,294
World Rank
1,668
Country Rank
469
University
Ranking Based On Selection:
10
* Total H Index Rankings
Rankings
1,315,141
World Rank
1,735
Country Rank
92
University
Ranking Based On Selection:
11
Engineering & Technology / Energy Engineering
Energy Engineering | Agricultural Engineering | Bioenergy and biofuels | Renewable Energy | Biomas
Energy Engineering | Agricultural Engineering | Bioenergy and biofuels | Renewable Energy | Biomas
H-Index Metrics
-
H-Index7
-
i10 Index7
-
Citation Counts770
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* Total H Index Rankings
Rankings
1,342,921
World Rank
1,804
Country Rank
25
University
Ranking Based On Selection:
12
Engineering & Technology / Energy Engineering
Energy Access | Renewable Energy | Rural Electrification | Just Transition | Systems Thinkin
Energy Access | Renewable Energy | Rural Electrification | Just Transition | Systems Thinkin
H-Index Metrics
-
H-Index7
-
i10 Index6
-
Citation Counts268
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* Total H Index Rankings
Rankings
1,418,996
World Rank
2,057
Country Rank
96
University
Ranking Based On Selection:
13
Engineering & Technology / Energy Engineering
Solar energy | Renewable energy | Phase change materials | Passive building coolin
Solar energy | Renewable energy | Phase change materials | Passive building coolin
H-Index Metrics
-
H-Index7
-
i10 Index4
-
Citation Counts144
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Premium Data
* Total H Index Rankings
Rankings
1,439,997
World Rank
2,123
Country Rank
15
University
Ranking Based On Selection:
14
* Total H Index Rankings
Rankings
1,580,810
World Rank
2,635
Country Rank
9
University
Ranking Based On Selection:
15
* Total H Index Rankings
Rankings
1,659,627
World Rank
2,920
Country Rank
9
University
Ranking Based On Selection:
16
Engineering & Technology / Energy Engineering
Power and Energy Engineering | Smart Systems | AI and ML | Quantum Computing | Optimizatio
Power and Energy Engineering | Smart Systems | AI and ML | Quantum Computing | Optimizatio
H-Index Metrics
-
H-Index5
-
i10 Index4
-
Citation Counts168
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* Total H Index Rankings
Rankings
1,730,948
World Rank
3,305
Country Rank
182
University
Ranking Based On Selection:
17
Engineering & Technology / Energy Engineering
Lightning Protection | Power Electronics | Power Converters | Renewable Energ
Lightning Protection | Power Electronics | Power Converters | Renewable Energ
H-Index Metrics
-
H-Index5
-
i10 Index2
-
Citation Counts71
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Premium Data
* Total H Index Rankings
Rankings
1,741,780
World Rank
3,378
Country Rank
108
University
Ranking Based On Selection:
18
Engineering & Technology / Energy Engineering
Power Electronics | Energy Engineering | Technology Educatio
Power Electronics | Energy Engineering | Technology Educatio
H-Index Metrics
-
H-Index5
-
i10 Index1
-
Citation Counts76
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Premium Data
* Total H Index Rankings
Rankings
1,750,004
World Rank
3,443
Country Rank
30
University
Ranking Based On Selection:
19
* Total H Index Rankings
Rankings
1,756,122
World Rank
3,474
Country Rank
25
University
Ranking Based On Selection:
20
* Total H Index Rankings
Rankings
1,783,906
World Rank
3,631
Country Rank
931
University
Ranking Based On Selection:
21
Engineering & Technology / Energy Engineering
remote sensing | geographic information systems | geomatics | atmospheric science | renewable energ
remote sensing | geographic information systems | geomatics | atmospheric science | renewable energ
H-Index Metrics
-
H-Index5
-
i10 Index2
-
Citation Counts83
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* Total H Index Rankings
Rankings
1,824,103
World Rank
3,802
Country Rank
100
University
Ranking Based On Selection:
22
Engineering & Technology / Energy Engineering
Power System | Electrical Installation and Maintenance | Solar Power in D
Power System | Electrical Installation and Maintenance | Solar Power in D
H-Index Metrics
-
H-Index4
-
i10 Index4
-
Citation Counts542
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* Total H Index Rankings
Rankings
1,858,530
World Rank
4,002
Country Rank
104
University
Ranking Based On Selection:
23
* Total H Index Rankings
Rankings
1,897,599
World Rank
4,280
Country Rank
245
University
Ranking Based On Selection:
24
Engineering & Technology / Energy Engineering
Renewable Energy | Electric Vehicle | IoT | Smart Grid | HVD
Renewable Energy | Electric Vehicle | IoT | Smart Grid | HVD
H-Index Metrics
-
H-Index4
-
i10 Index2
-
Citation Counts73
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* Total H Index Rankings
Rankings
1,898,700
World Rank
4,294
Country Rank
125
University
Ranking Based On Selection:
25
Engineering & Technology / Energy Engineering
energy storage systems | solar energy systems | renewable energy systems | power electronic
energy storage systems | solar energy systems | renewable energy systems | power electronic
H-Index Metrics
-
H-Index4
-
i10 Index2
-
Citation Counts71
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Premium Data
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