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 30, 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: 1
Energy storage and conversion
Batteries
Li-S battery
metal air battery
Na ion battery
Metrics
H-Index
i10 Index
Citation Counts
110
451
40,491
* Total H IndexRankings
Ranking Based On Selection: 2
Energy and environmental policy
Metrics
H-Index
i10 Index
Citation Counts
109
492
47,087
* Total H IndexRankings
Ranking Based On Selection: 3
Energy Economics Modeling
Energy Efficiency
DEA
CO2 emissions
productivity and efficiency evaluation
Metrics
H-Index
i10 Index
Citation Counts
42
81
7,006
* Total H IndexRankings
Ranking Based On Selection: 4
Energy Economics
Climate Policy
Energy Policy
Metrics
H-Index
i10 Index
Citation Counts
40
90
7,211
* Total H IndexRankings
Ranking Based On Selection: 5
Environmental Science & Engineering
Biochar
Environmental Nanotechnology
Metrics
H-Index
i10 Index
Citation Counts
37
46
14,159
* Total H IndexRankings
Ranking Based On Selection: 6
waste heat recovery
hybrid electric powertrain
Metrics
H-Index
i10 Index
Citation Counts
26
38
3,703
* Total H IndexRankings
Ranking Based On Selection: 7
climate change
mitigation and adaptation
risk management
Metrics
H-Index
i10 Index
Citation Counts
24
31
2,097
* Total H IndexRankings
Ranking Based On Selection: 8
Energy and environmental policy
Energy modeling
Metrics
H-Index
i10 Index
Citation Counts
19
29
2,364
* Total H IndexRankings
Ranking Based On Selection: 9
Climate change
Climate policy
Emission trading systems
Allowance allocation
Low-carbon development
Metrics
H-Index
i10 Index
Citation Counts
17
28
994
* Total H IndexRankings
Ranking Based On Selection: 10
Petroleum Engineering
Environmental Engineering
Metrics
H-Index
i10 Index
Citation Counts
16
25
1,266
* Total H IndexRankings
Ranking Based On Selection: 11
Energy and Environment Policy
Economics of Climate Change
Metrics
H-Index
i10 Index
Citation Counts
13
13
1,078
* Total H IndexRankings
Ranking Based On Selection: 12
Environment Sustainability
CSR
Financial Reporting
Metrics
H-Index
i10 Index
Citation Counts
12
14
504
* Total H IndexRankings
Ranking Based On Selection: 13
Building energy modeling
Building energy efficiency
Climate change mitigation
Cirular economy
Metrics
H-Index
i10 Index
Citation Counts
4
4
170
Renjie Chen
Beijing Institute of Technology
Beijing, China
Metrics
H-Index
i10-Index
Citation Counts
110
451
40,491
Energy storage and conversion
Batteries
Li-S battery
metal air battery
Na ion battery
Yi-Ming Wei 魏一鸣
Beijing Institute of Technology
Beijing, China
Metrics
H-Index
i10-Index
Citation Counts
109
492
47,087
Energy and environmental policy
Ke Wang 王科
Beijing Institute of Technology
Beijing, China
Metrics
H-Index
i10-Index
Citation Counts
42
81
7,006
Energy Economics Modeling
Energy Efficiency
DEA
CO2 emissions
productivity and efficiency evaluation
Hua Liao 廖华
Beijing Institute of Technology
Beijing, China
Metrics
H-Index
i10-Index
Citation Counts
40
90
7,211
Energy Economics
Climate Policy
Energy Policy
Ying Yao
Beijing Institute of Technology
Beijing, China
Metrics
H-Index
i10-Index
Citation Counts
37
46
14,159
Environmental Science & Engineering
Biochar
Environmental Nanotechnology
Enhua Wang
Beijing Institute of Technology
Beijing, China
Metrics
H-Index
i10-Index
Citation Counts
26
38
3,703
waste heat recovery
hybrid electric powertrain
Xiao-Chen Yuan 袁潇晨
Beijing Institute of Technology
Beijing, China
Metrics
H-Index
i10-Index
Citation Counts
24
31
2,097
climate change
mitigation and adaptation
risk management
Hui Li
Beijing Institute of Technology
Beijing, China
Metrics
H-Index
i10-Index
Citation Counts
19
29
2,364
Energy and environmental policy
Energy modeling
Yu-Jie Hu
Beijing Institute of Technology
Beijing, China
Metrics
H-Index
i10-Index
Citation Counts
17
28
994
Climate change
Climate policy
Emission trading systems
Allowance allocation
Low-carbon development
Jiaqing Chen
Metrics
H-Index
i10-Index
Citation Counts
16
25
1,266
Petroleum Engineering
Environmental Engineering
Rong Han 韩融
Beijing Institute of Technology
Beijing, China
Metrics
H-Index
i10-Index
Citation Counts
13
13
1,078
Energy and Environment Policy
Economics of Climate Change
Md Afzal Hossain
Beijing Institute of Technology
Beijing, China
Metrics
H-Index
i10-Index
Citation Counts
12
14
504
Environment Sustainability
CSR
Financial Reporting
Yangyang Guo (郭阳阳)
Beijing Institute of Technology
Beijing, China
Metrics
H-Index
i10-Index
Citation Counts
4
4
170
Building energy modeling
Building energy efficiency
Climate change mitigation
Cirular economy