Top 100 scientists can be ranked globally or specific to the following regions including Africa, Asia, Europe, North America, Latin America, Oceania, Arab League, ASEAN, EECA, and BRICS based on total H-index scores without any breakdown by subject areas. Top 100 rankings in the world, in a continent, or a region include standardized subjects areas of Agriculture & Forestry, Arts, Design and Architecture, Business & Management, Economics & Econometrics, Education, Engineering & Technology, History, Philosophy, Theology, Law/Law and Legal Studies, Medical and Health Sciences, Natural Sciences, Social Sciences, Art and Humanities Rankings and Social Sciences and Humanities Rankings BETA VERSION. Subject field ranking in world, region, country and university is beta version since subject field "others" (1,014,167 scientists profile whose branch cannot be determined, not yet edited or determined) is excluded, so the ranking will change as the others fields are edited. Please note that. Subjects indicated as “ * others ” will not be included in the ranking by regions and subjects.
Computational Fluid Dynamics
Nano fluids
Finite Element Method
Finite Difference Method
Heat
Metrics
H-Index
i10 Index
Citation
29
71
3,391
zoonoses foodborne diseases epidemiology food safety
Metrics
H-Index
i10 Index
Citation
24
36
1,791
MedicinalChemistry
SyntheticOrganicChemistry
NaturalProductChemistry
Diabetes
Alzheimer'sDisease
Metrics
H-Index
i10 Index
Citation
18
27
1,428
Health system
Metrics
H-Index
i10 Index
Citation
18
30
1,301
Ecosystem services
LULCC
Landscape fragmentation
Environmental income
disaster risk studies
Metrics
H-Index
i10 Index
Citation
14
15
1,535
Public Health
Metrics
H-Index
i10 Index
Citation
14
14
507
clinical pharmacy
Metrics
H-Index
i10 Index
Citation
14
24
715
Network Communcation and Aritificial intelligence
Metrics
H-Index
i10 Index
Citation
14
17
625
GIS and Remote Sensing
Hydrology and Hydrological Modeling
Climate change and Modeling
Ecosystem Service
Land Fragmentation
Metrics
H-Index
i10 Index
Citation
13
13
1,241
Artificial Intelligence
Finite Automata
Data Mining
IoT
Neural Networks
Metrics
H-Index
i10 Index
Citation
13
19
941
Veterinary Microbiology
Metrics
H-Index
i10 Index
Citation
12
15
393
Clinical pharmacy
Rational drug use
cardiovascular
drug-related problem
Antimicrobial
Metrics
H-Index
i10 Index
Citation
12
14
340
Epidemiological research
Health service system
health inequality
Metrics
H-Index
i10 Index
Citation
12
12
508
Software Engineering
Image Processing
Artificial Intelligence.
Metrics
H-Index
i10 Index
Citation
12
12
598
natural sciences and applied sciences
Metrics
H-Index
i10 Index
Citation
12
14
378
public health
nutrition
nutrigenomics
Metrics
H-Index
i10 Index
Citation
10
10
523
Fisheries and Aquatic Sciences
Metrics
H-Index
i10 Index
Citation
10
10
265
Teacher Education
Metrics
H-Index
i10 Index
Citation
10
10
1,836
Applied mathematics
Metrics
H-Index
i10 Index
Citation
9
9
229
Maternal and child health
HIV/Aids
measurements in Public Health
Metrics
H-Index
i10 Index
Citation
9
8
946
* Rankings
Ranking Based On Selection :21
Information Technology
Metrics
H-Index
i10 Index
Citation
9
8
250
* Rankings
Ranking Based On Selection :22
Climate change
Livelihood resilience & vulnerability
Environmental impact assessment
Adaptation
Metrics
H-Index
i10 Index
Citation
9
8
178
* Rankings
Ranking Based On Selection :23
cancer
diabetes
cardiovascular and molecular research
Metrics
H-Index
i10 Index
Citation
9
9
215
* Rankings
Ranking Based On Selection :24
Supply Chain Management
Food systems transition
sustainability
SC governance
IPR
Metrics
H-Index
i10 Index
Citation
9
8
243
* Rankings
Ranking Based On Selection :25
Drug development
Metrics
H-Index
i10 Index
Citation
8
7
194
* Rankings
Ranking Based On Selection :26
PUBLIC HEALTH
REPRODUCTIVE HEALTH
Metrics
H-Index
i10 Index
Citation
8
6
188
* Rankings
Ranking Based On Selection :27
Compuational Fluid Dynamics
Metrics
H-Index
i10 Index
Citation
8
5
264
* Rankings
Ranking Based On Selection :28
Natural Language processing
Data Science
Pattern Mining
Computer Network
Metrics
H-Index
i10 Index
Citation
8
6
175
* Rankings
Ranking Based On Selection :29
Forestry
Water Resources and Soil Science
Metrics
H-Index
i10 Index
Citation
8
6
195
* Rankings
Ranking Based On Selection :30
Ecotoxicology
water quality
ecosystem services
waste management
Metrics
H-Index
i10 Index
Citation
7
7
561
* Rankings
Ranking Based On Selection :31
Economics Development
Environmental Valuation and Energy Economics
Metrics
H-Index
i10 Index
Citation
7
6
172
* Rankings
Ranking Based On Selection :32
Pollution Ecology
Metrics
H-Index
i10 Index
Citation
7
6
169
* Rankings
Ranking Based On Selection :33
Social Media
Childhood
Academic Integrity
Educational research
Metrics
H-Index
i10 Index
Citation
7
5
234
* Rankings
Ranking Based On Selection :34
Statistics (Biostatistics)
Metrics
H-Index
i10 Index
Citation
7
5
131
* Rankings
Ranking Based On Selection :35
Physics Education
Science Education
STEM Education Research
Assessment in education
Metrics
H-Index
i10 Index
Citation
7
6
238
* Rankings
Ranking Based On Selection :36
Pharmaceutics
Pharmaceutical formulations
Drug delivery
Nanomedicine
Pharmaceutical technology
Metrics
H-Index
i10 Index
Citation
7
6
232
* Rankings
Ranking Based On Selection :37
veterinary epidemiology
veterinary public health
Metrics
H-Index
i10 Index
Citation
7
5
236
* Rankings
Ranking Based On Selection :38
Research
Metrics
H-Index
i10 Index
Citation
7
5
131
* Rankings
Ranking Based On Selection :39
Medicine and Health Sciences
Metrics
H-Index
i10 Index
Citation
6
6
147
* Rankings
Ranking Based On Selection :40
Environmental Sciences
Botanical Science
Metrics
H-Index
i10 Index
Citation
6
5
246
* Rankings
Ranking Based On Selection :41
Bacterial and viral infections
Hospital acquired Infections
Antimicrobial resistance
one health
Metrics
H-Index
i10 Index
Citation
6
5
196
* Rankings
Ranking Based On Selection :42
Mobile Computing
Distributed System
Soft Computing
Metrics
H-Index
i10 Index
Citation
6
4
95
* Rankings
Ranking Based On Selection :43
Horticulture
Metrics
H-Index
i10 Index
Citation
5
5
160
* Rankings
Ranking Based On Selection :44
application of statistics in health science
Metrics
H-Index
i10 Index
Citation
5
5
145
* Rankings
Ranking Based On Selection :45
Maternal and Reproductive Health
Metrics
H-Index
i10 Index
Citation
5
5
141
* Rankings
Ranking Based On Selection :46
Agricultural economics
Metrics
H-Index
i10 Index
Citation
5
4
128
* Rankings
Ranking Based On Selection :47
Mathematical Modeling and Simulation
Computational Mathematics
Engineering Thermo-Physics
Metrics
H-Index
i10 Index
Citation
5
4
89
* Rankings
Ranking Based On Selection :48
Physical Chemistry
Metrics
H-Index
i10 Index
Citation
5
4
70
* Rankings
Ranking Based On Selection :49
business
Metrics
H-Index
i10 Index
Citation
5
4
66
* Rankings
Ranking Based On Selection :50
Spatial-temporal modeling
Bayesian:MCMC R-INLA
Heat-stress
Disease
Hierarchical Models
Metrics
H-Index
i10 Index
Citation
5
3
157
* Rankings
Ranking Based On Selection :51
Applied Mathematics
Differential Equations (DEs)
Differential Geometry
Mathematical modeling
Metrics
H-Index
i10 Index
Citation
5
3
81
* Rankings
Ranking Based On Selection :52
Materials chemistry
Adsorption
LDH/Os
Co-precipitation
Carbon capture and storage
Metrics
H-Index
i10 Index
Citation
5
3
67
* Rankings
Ranking Based On Selection :53
Hydrology and Water Resources Engineering
Metrics
H-Index
i10 Index
Citation
5
3
62
* Rankings
Ranking Based On Selection :54
Health
Metrics
H-Index
i10 Index
Citation
5
2
116
* Rankings
Ranking Based On Selection :55
statistical Theory of Distributions
Econometrics
Multivariate
Metrics
H-Index
i10 Index
Citation
5
1
79
* Rankings
Ranking Based On Selection :56
biology
genetics
Metrics
H-Index
i10 Index
Citation
4
4
523
* Rankings
Ranking Based On Selection :57
plant breeding
Metrics
H-Index
i10 Index
Citation
4
4
99
* Rankings
Ranking Based On Selection :58
Animal Biotechnology
Metrics
H-Index
i10 Index
Citation
4
4
71
* Rankings
Ranking Based On Selection :59
Food systems analysis
value chain analysis
Policy analysis with system approac
Metrics
H-Index
i10 Index
Citation
4
3
167
* Rankings
Ranking Based On Selection :60
Computational Fluid Dynamics
food drying
heat and mass transfer
Metrics
H-Index
i10 Index
Citation
4
3
104
* Rankings
Ranking Based On Selection :61
Development Economics
Project Management
Impact Assessment
Metrics
H-Index
i10 Index
Citation
4
3
64
* Rankings
Ranking Based On Selection :62
Hydraulics
Engineering Hydrology
Water resource engineering and management
Sediment transport
Metrics
H-Index
i10 Index
Citation
4
3
46
* Rankings
Ranking Based On Selection :63
Business Administration
Supply Chain Management
Project Management
Change Management
Metrics
H-Index
i10 Index
Citation
4
2
37
* Rankings
Ranking Based On Selection :64
Construction Technology and Management
Construction Materials
Concrete Technology
Construction
Metrics
H-Index
i10 Index
Citation
4
1
50
* Rankings
Ranking Based On Selection :65
Health promotion
nutrition
reproductive health
MNCH
behavioral theories/models
Metrics
H-Index
i10 Index
Citation
4
1
49
* Rankings
Ranking Based On Selection :66
Innovation
Institution
Knowledge
Social movement
Land tenure system
Metrics
H-Index
i10 Index
Citation
4
1
43
* Rankings
Ranking Based On Selection :67
Metrics
H-Index
i10 Index
Citation
4
1
42
* Rankings
Ranking Based On Selection :68
Natural Language Processing
Predictive Analytics
Computer Network
Artificial Intelligence
Metrics
H-Index
i10 Index
Citation
4
1
42
* Rankings
Ranking Based On Selection :69
Biorational pest management
Metrics
H-Index
i10 Index
Citation
4
1
37
* Rankings
Ranking Based On Selection :70
Applied Mathematics
Numerical Analysis
Numerical Optimization
Numerical simulation
Metrics
H-Index
i10 Index
Citation
4
1
34
* Rankings
Ranking Based On Selection :71
Zoology and Ecology
Metrics
H-Index
i10 Index
Citation
4
0
28
* Rankings
Ranking Based On Selection :72
Marketing
Management
Finance and Business Administration
Metrics
H-Index
i10 Index
Citation
4
2
70
* Rankings
Ranking Based On Selection :73
Veterinary Medicine
Metrics
H-Index
i10 Index
Citation
4
0
32
* Rankings
Ranking Based On Selection :74
Environmental science
Vegetation ecology
Biodiversity and ecosystem services
Social-ecological (Ecotourism)
Land-use plannin
Metrics
H-Index
i10 Index
Citation
3
3
88
* Rankings
Ranking Based On Selection :75
Infectious disease epidemiology
Metrics
H-Index
i10 Index
Citation
3
3
56
* Rankings
Ranking Based On Selection :76
Forestry
Metrics
H-Index
i10 Index
Citation
3
2
96
* Rankings
Ranking Based On Selection :77
Hydrology
Water Resources Engineering
Nature based solution
Hydrologic and Hydraulic Modeling
Metrics
H-Index
i10 Index
Citation
3
2
32
* Rankings
Ranking Based On Selection :78
Health research
Metrics
H-Index
i10 Index
Citation
3
1
110
* Rankings
Ranking Based On Selection :79
Machine learning
AI
Deep learning
NLP
Data Mining
Metrics
H-Index
i10 Index
Citation
3
1
47
* Rankings
Ranking Based On Selection :80
Agricultural Water management
Crop modeling
Irrigation water management
Metrics
H-Index
i10 Index
Citation
3
1
42
* Rankings
Ranking Based On Selection :81
Veterinary Epidemiology
One Health Approach and Infectious Disease Modelling
Climate Change
Ethnoveterinary Medicine
Animal Health Economics
Metrics
H-Index
i10 Index
Citation
3
1
40
* Rankings
Ranking Based On Selection :82
Law and Development (Intellectual Property Law
Competition Law
Commercial Dispute Resolution
Law and Gender
Law and Environment)
Metrics
H-Index
i10 Index
Citation
3
1
39
* Rankings
Ranking Based On Selection :83
Mathematics
Science and Technology Education
Metrics
H-Index
i10 Index
Citation
3
1
38
* Rankings
Ranking Based On Selection :84
Marketing
channels
services
Metrics
H-Index
i10 Index
Citation
3
1
36
* Rankings
Ranking Based On Selection :85
Hydrology Remote sensing machine learning geospatial
Metrics
H-Index
i10 Index
Citation
3
1
34
* Rankings
Ranking Based On Selection :86
climate
Energy
Environment science
forestry
Metrics
H-Index
i10 Index
Citation
3
1
34
* Rankings
Ranking Based On Selection :87
Sport Management
Strength & Conditioning
Exercise Performance
Qualitative & Quantitative Research
Metrics
H-Index
i10 Index
Citation
3
1
30
* Rankings
Ranking Based On Selection :88
Political Science
Federalism
Metrics
H-Index
i10 Index
Citation
3
1
25
* Rankings
Ranking Based On Selection :89
Economics
Metrics
H-Index
i10 Index
Citation
3
1
23
* Rankings
Ranking Based On Selection :90
Deep learning
Stochastic optimization
Partial differential equations
Metrics
H-Index
i10 Index
Citation
3
1
22
* Rankings
Ranking Based On Selection :91
Algebra
Metrics
H-Index
i10 Index
Citation
3
0
25
* Rankings
Ranking Based On Selection :92
Accounting and Finance
Metrics
H-Index
i10 Index
Citation
3
0
25
* Rankings
Ranking Based On Selection :93
Manufacturing Engineering
Industrial Engineering
Supply Chain Management
Maintenance Engineering
Metal forming
Metrics
H-Index
i10 Index
Citation
3
0
23
* Rankings
Ranking Based On Selection :94
Communication
Media
Journalism
Public Realtions
Metrics
H-Index
i10 Index
Citation
3
0
18
* Rankings
Ranking Based On Selection :95
adult education
professional learning
Metrics
H-Index
i10 Index
Citation
3
0
17
* Rankings
Ranking Based On Selection :96
Neonatology
Infectious disease
Child Health
Metrics
H-Index
i10 Index
Citation
3
0
16
* Rankings
Ranking Based On Selection :97
Electrochemistry
Polymer Chemistry
Energy and Battery Technology
Metrics
H-Index
i10 Index
Citation
3
0
16
* Rankings
Ranking Based On Selection :98
Research and Innovations
Metrics
H-Index
i10 Index
Citation
3
1
36
* Rankings
Ranking Based On Selection :99
Management
Metrics
H-Index
i10 Index
Citation
3
0
20
* Rankings
Ranking Based On Selection :100
Public Policy
Identity politics
Public Administration
Federalism
Multi-level Governance
Metrics
H-Index
i10 Index
Citation
3
0
14
Wubshet Ibrahim
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
29
71
3,391
Computational Fluid Dynamics
Nano fluids
Finite Element Method
Finite Difference Method
Heat
Endrias Zewdu Gebremedhin
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
24
36
1,791
zoonoses foodborne diseases epidemiology food safety
MedicinalChemistry
SyntheticOrganicChemistry
NaturalProductChemistry
Diabetes
Alzheimer'sDisease
Mulugeta Mekuria
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
18
30
1,301
Terefe Tolessa Muleta
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
14
15
1,535
Ecosystem services
LULCC
Landscape fragmentation
Environmental income
disaster risk studies
Moges Kidane Biru
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
13
13
1,241
GIS and Remote Sensing
Hydrology and Hydrological Modeling
Climate change and Modeling
Ecosystem Service
Land Fragmentation
Dr Karthikeyan Kaliyaperumal
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
13
19
941
Artificial Intelligence
Finite Automata
Data Mining
IoT
Neural Networks
Lencho Megersa Marami|Lencho Megersa
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
12
15
393
Veterinary Microbiology
Gosaye Mekonen Tefera
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
12
14
340
Clinical pharmacy
Rational drug use
cardiovascular
drug-related problem
Antimicrobial
Eshetu Ejeta Chaka
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
12
12
508
Epidemiological research
Health service system
health inequality
Manoharan Subramanian|Manoharan Subramanian, Manoharan S
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
12
12
598
Software Engineering
Image Processing
Artificial Intelligence.
Pasham Venkateshwarlu
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
12
14
378
natural sciences and applied sciences
public health
nutrition
nutrigenomics
Mathewos Temesgen Kebede
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
10
10
265
Maternal and child health
HIV/Aids
measurements in Public Health
Climate change
Livelihood resilience & vulnerability
Environmental impact assessment
Adaptation
Tadesse Kenea Amentae
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
9
8
243
Supply Chain Management
Food systems transition
sustainability
SC governance
IPR
PUBLIC HEALTH
REPRODUCTIVE HEALTH
Natural Language processing
Data Science
Pattern Mining
Computer Network
Forestry
Water Resources and Soil Science
Ecotoxicology
water quality
ecosystem services
waste management
Economics Development
Environmental Valuation and Energy Economics
Social Media
Childhood
Academic Integrity
Educational research
Senahara Korsa Wake
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
7
5
131
Physics Education
Science Education
STEM Education Research
Assessment in education
Muluneh Fromsa Seifu
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
7
6
232
Pharmaceutics
Pharmaceutical formulations
Drug delivery
Nanomedicine
Pharmaceutical technology
Manyazewal Anberber Zeleke
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
7
5
236
Medicine and Health Sciences
Bacterial and viral infections
Hospital acquired Infections
Antimicrobial resistance
one health
application of statistics in health science
Mathematical Modeling and Simulation
Computational Mathematics
Engineering Thermo-Physics
Spatial-temporal modeling
Bayesian:MCMC R-INLA
Heat-stress
Disease
Hierarchical Models
Applied Mathematics
Differential Equations (DEs)
Differential Geometry
Mathematical modeling
Materials chemistry
Adsorption
LDH/Os
Co-precipitation
Carbon capture and storage
Teshome Melese Belihu
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
5
2
116
Agassa Galdassa Fufi
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
5
1
79
Animal Biotechnology
Food systems analysis
value chain analysis
Policy analysis with system approac
Computational Fluid Dynamics
food drying
heat and mass transfer
Timketa Adula Duguma|Timketa Adula
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
4
3
46
Hydraulics
Engineering Hydrology
Water resource engineering and management
Sediment transport
Solomon Amsalu Gesese|Amsalu Solomon, Solomon Amsalu
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
4
2
37
Business Administration
Supply Chain Management
Project Management
Change Management
Jifara Chimdi Bikila
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
4
1
50
Construction Technology and Management
Construction Materials
Concrete Technology
Construction
Health promotion
nutrition
reproductive health
MNCH
behavioral theories/models
Debella Deressa Bayissa
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
4
1
43
Innovation
Institution
Knowledge
Social movement
Land tenure system
Abdella Birhan Yabeyu
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
4
1
42
Natural Language Processing
Predictive Analytics
Computer Network
Artificial Intelligence
Applied Mathematics
Numerical Analysis
Numerical Optimization
Numerical simulation
Marketing
Management
Finance and Business Administration
Environmental science
Vegetation ecology
Biodiversity and ecosystem services
Social-ecological (Ecotourism)
Land-use plannin
Hydrology
Water Resources Engineering
Nature based solution
Hydrologic and Hydraulic Modeling
Yonas Gurmu Dugasa|Yonas Gurmu
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
3
1
110
Machine learning
AI
Deep learning
NLP
Data Mining
Agricultural Water management
Crop modeling
Irrigation water management
Tegegn Dilbato Dinbiso
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
3
1
40
Veterinary Epidemiology
One Health Approach and Infectious Disease Modelling
Climate Change
Ethnoveterinary Medicine
Animal Health Economics
Law and Development (Intellectual Property Law
Competition Law
Commercial Dispute Resolution
Law and Gender
Law and Environment)
Mathematics
Science and Technology Education
Shimelis Asfaw Wakigari
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
3
1
34
Hydrology Remote sensing machine learning geospatial
climate
Energy
Environment science
forestry
Sport Management
Strength & Conditioning
Exercise Performance
Qualitative & Quantitative Research
Political Science
Federalism
Lelisa Kebena Bijiga
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
3
1
22
Deep learning
Stochastic optimization
Partial differential equations
Accounting and Finance
Venkata Mallikharjuna Kishan Ivatury
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
3
0
23
Manufacturing Engineering
Industrial Engineering
Supply Chain Management
Maintenance Engineering
Metal forming
Temesgen Oljira Geleta
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
3
0
17
Gashahun Gobena Serbessa
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
3
0
16
Electrochemistry
Polymer Chemistry
Energy and Battery Technology
Maruthi Varaprasad Alaparthi
Ambo University
Ambo, Ethiopia
Metrics
H-Index
i10 Index
Citation Counts
3
0
20
Public Policy
Identity politics
Public Administration
Federalism
Multi-level Governance