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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 Dec 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 (1.131.755) 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
27,516
World Rank
23
Country Rank
1
University
Ranking Based On Selection:
1
Engineering & Technology / Civil Engineering
Civil Environmental Engineering | air quality | environment | coal geochemistr
Civil Environmental Engineering | air quality | environment | coal geochemistr
H-Index Metrics
-
H-Index76
-
i10 Index265
-
Citation Counts16,055
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* Total H Index Rankings
Rankings
29,259
World Rank
24
Country Rank
5
University
Ranking Based On Selection:
2
Engineering & Technology / Environmental Science & Engineering
Disaster Risk Management | Disaster Risk Reduction | Climate Change Adaptation | Seismic Hazard | Earthquake Engineerin
Disaster Risk Management | Disaster Risk Reduction | Climate Change Adaptation | Seismic Hazard | Earthquake Engineerin
H-Index Metrics
-
H-Index75
-
i10 Index169
-
Citation Counts45,846
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* Total H Index Rankings
Rankings
54,191
World Rank
33
Country Rank
1
University
Ranking Based On Selection:
3
Engineering & Technology / Industrial & Manufacturing Engineering
Ingeniería | diseño industrial | medio ambiente | seguridad y salud en el trabaj
Ingeniería | diseño industrial | medio ambiente | seguridad y salud en el trabaj
H-Index Metrics
-
H-Index61
-
i10 Index112
-
Citation Counts17,915
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* Total H Index Rankings
Rankings
59,026
World Rank
36
Country Rank
1
University
Ranking Based On Selection:
4
Engineering & Technology / Metallurgical & Materials Engineering
Alkali-Activated Materials | Geopolymers | Building Materials | Waste Valorization | Corrosion and durabilit
Alkali-Activated Materials | Geopolymers | Building Materials | Waste Valorization | Corrosion and durabilit
H-Index Metrics
-
H-Index59
-
i10 Index161
-
Citation Counts14,193
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* Total H Index Rankings
Rankings
65,893
World Rank
41
Country Rank
3
University
Ranking Based On Selection:
5
Engineering & Technology / Environmental Science & Engineering
Environmental Sciencies | Biodiversity | Natural Product
Environmental Sciencies | Biodiversity | Natural Product
H-Index Metrics
-
H-Index57
-
i10 Index185
-
Citation Counts13,416
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* Total H Index Rankings
Rankings
72,734
World Rank
49
Country Rank
11
University
Ranking Based On Selection:
6
Engineering & Technology / Computer Science
machine learning | artificial intelligence | natural language processing | computer vision | biomedica
machine learning | artificial intelligence | natural language processing | computer vision | biomedica
H-Index Metrics
-
H-Index55
-
i10 Index178
-
Citation Counts15,649
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* Total H Index Rankings
Rankings
79,607
World Rank
58
Country Rank
1
University
Ranking Based On Selection:
7
* Total H Index Rankings
Rankings
80,057
World Rank
59
Country Rank
15
University
Ranking Based On Selection:
8
Engineering & Technology / Civil Engineering
Hydrology | Climatology | Climate Variability | Climate Change | Human Healt
Hydrology | Climatology | Climate Variability | Climate Change | Human Healt
H-Index Metrics
-
H-Index53
-
i10 Index131
-
Citation Counts12,479
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* Total H Index Rankings
Rankings
87,726
World Rank
69
Country Rank
9
University
Ranking Based On Selection:
9
Engineering & Technology / Computer Science
Computer Vision | Artificial Intelligence | Machine Learning | Medical Image Computin
Computer Vision | Artificial Intelligence | Machine Learning | Medical Image Computin
H-Index Metrics
-
H-Index51
-
i10 Index100
-
Citation Counts35,574
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* Total H Index Rankings
Rankings
92,309
World Rank
71
Country Rank
20
University
Ranking Based On Selection:
10
Engineering & Technology / Nanoscience and Nanotechnology
Nanotechnology | Crude Oil | EOR | Formation Damage | Surface phenomen
Nanotechnology | Crude Oil | EOR | Formation Damage | Surface phenomen
H-Index Metrics
-
H-Index50
-
i10 Index163
-
Citation Counts8,556
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* Total H Index Rankings
Rankings
95,375
World Rank
77
Country Rank
10
University
Ranking Based On Selection:
11
Engineering & Technology / Marine Sciences and Engineering
Marine Biology | Molecular Ecology | Evolution | Conservatio
Marine Biology | Molecular Ecology | Evolution | Conservatio
H-Index Metrics
-
H-Index50
-
i10 Index115
-
Citation Counts8,029
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* Total H Index Rankings
Rankings
102,131
World Rank
80
Country Rank
9
University
Ranking Based On Selection:
12
Engineering & Technology / Metallurgical & Materials Engineering
Sustainable Composites | Ceramics | Natural Fibers | Additive Manufacturing | Clean Technologie
Sustainable Composites | Ceramics | Natural Fibers | Additive Manufacturing | Clean Technologie
H-Index Metrics
-
H-Index48
-
i10 Index138
-
Citation Counts7,617
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* Total H Index Rankings
Rankings
108,012
World Rank
96
Country Rank
13
University
Ranking Based On Selection:
13
Engineering & Technology / Computer Science
Software Engineering | Mobile development | Artificial Intelligence | Military Innovatio
Software Engineering | Mobile development | Artificial Intelligence | Military Innovatio
H-Index Metrics
-
H-Index47
-
i10 Index84
-
Citation Counts7,789
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* Total H Index Rankings
Rankings
109,067
World Rank
98
Country Rank
24
University
Ranking Based On Selection:
14
Engineering & Technology / Petroleum Engineering
Regional tectonics | igneous and sedimentary petrology | provenance | geochemistry | reservoir qualit
Regional tectonics | igneous and sedimentary petrology | provenance | geochemistry | reservoir qualit
H-Index Metrics
-
H-Index47
-
i10 Index84
-
Citation Counts7,716
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* Total H Index Rankings
Rankings
118,893
World Rank
113
Country Rank
27
University
Ranking Based On Selection:
15
Engineering & Technology / Petroleum Engineering
EOR | IOR | Formation Damage | Nanotechnology | Catalysi
EOR | IOR | Formation Damage | Nanotechnology | Catalysi
H-Index Metrics
-
H-Index45
-
i10 Index128
-
Citation Counts6,416
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* Total H Index Rankings
Rankings
119,440
World Rank
115
Country Rank
5
University
Ranking Based On Selection:
16
Engineering & Technology / Electrical & Electronic Engineering
Particle instrumentation | data analysis | machine learnin
Particle instrumentation | data analysis | machine learnin
H-Index Metrics
-
H-Index45
-
i10 Index97
-
Citation Counts12,216
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* Total H Index Rankings
Rankings
119,961
World Rank
117
Country Rank
2
University
Ranking Based On Selection:
17
* Total H Index Rankings
Rankings
120,809
World Rank
119
Country Rank
28
University
Ranking Based On Selection:
18
Engineering & Technology / Metallurgical & Materials Engineering
Biomateriales | Materiales | Ingeniería de materiales | Cerámic
Biomateriales | Materiales | Ingeniería de materiales | Cerámic
H-Index Metrics
-
H-Index45
-
i10 Index200
-
Citation Counts9,782
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* Total H Index Rankings
Rankings
125,345
World Rank
127
Country Rank
2
University
Ranking Based On Selection:
19
* Total H Index Rankings
Rankings
128,259
World Rank
132
Country Rank
6
University
Ranking Based On Selection:
20
* Total H Index Rankings
Rankings
132,640
World Rank
140
Country Rank
15
University
Ranking Based On Selection:
21
Engineering & Technology / Bioengineering
Nanobioengineering | Nanocarriers | Nanotechnology | (Bio)sensors | Electrochemistr
Nanobioengineering | Nanocarriers | Nanotechnology | (Bio)sensors | Electrochemistr
H-Index Metrics
-
H-Index43
-
i10 Index82
-
Citation Counts7,663
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* Total H Index Rankings
Rankings
138,875
World Rank
150
Country Rank
19
University
Ranking Based On Selection:
22
Engineering & Technology / Computer Science
Computer science | pattern recognition | speech processing | pathological speech analysis | signal processin
Computer science | pattern recognition | speech processing | pathological speech analysis | signal processin
H-Index Metrics
-
H-Index42
-
i10 Index138
-
Citation Counts6,587
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* Total H Index Rankings
Rankings
146,249
World Rank
161
Country Rank
22
University
Ranking Based On Selection:
23
Engineering & Technology / Environmental Science & Engineering
Climate Dynamics | Climate Change | Climate Variabilit
Climate Dynamics | Climate Change | Climate Variabilit
H-Index Metrics
-
H-Index41
-
i10 Index76
-
Citation Counts28,815
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* Total H Index Rankings
Rankings
156,728
World Rank
179
Country Rank
36
University
Ranking Based On Selection:
24
Engineering & Technology / Food Science and Engineering
Food chemistry | flavor chemistry | chemical ecology | microencapsulation | functional food
Food chemistry | flavor chemistry | chemical ecology | microencapsulation | functional food
H-Index Metrics
-
H-Index40
-
i10 Index72
-
Citation Counts4,681
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* Total H Index Rankings
Rankings
158,454
World Rank
184
Country Rank
38
University
Ranking Based On Selection:
25
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