Citation Rankings (Highly Cited Researchers) 2024 and list of influential and most cited researchers in Agriculture and Forestry, Art, Design and Architecture, Business and Management, Economics and Econometrics, Education, Engineering and Technology, History, Philosophy, Theology, Law, Medicine and Health Sciences, Natural Sciences and Social Sciences and their 256 sub-branches is a unique service offered only by “AD Scientific Index”. You can see the most cited and influential researchers in the country and region. See also for more specific citation analyses: "last 6 years citation index" Universities Rankings 2024 (Sort by: Total Citations) and Universities Rankings 2024 (Sort by : Last 6 Years Citations)
* Total Citation Counts Rankings
World Rank
158,208
Country Rank
3,101
Institution Rank : 1
![](https://cdn.adscientificindex.com/logos/4480.png)
![Japan](/flags/jp.png)
![Takashi Inoguchi](/user/assets/images/profile/no-profile-photo.png)
Political Science
International Relations
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,348
1,405
0.221
* Total Citation Counts Rankings
World Rank
348,264
Country Rank
7,146
Institution Rank : 2
![](https://cdn.adscientificindex.com/logos/4480.png)
![Japan](/flags/jp.png)
![Shuichiro Watanabe](https://cdn.adscientificindex.com/pictures/2b/425038.jpg)
Geriatrics & Gerontology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,663
775
0.291
* Total Citation Counts Rankings
World Rank
690,968
Country Rank
13,446
Institution Rank : 3
![](https://cdn.adscientificindex.com/logos/4480.png)
![Japan](/flags/jp.png)
![Seiho Sugawara](https://cdn.adscientificindex.com/pictures/59/5010589.jpg)
electrochemistry
catalysis
chemical engineering
fuel cells
hydrogen
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
941
436
0.463
* Total Citation Counts Rankings
World Rank
1,119,048
Country Rank
20,668
Institution Rank : 4
![](https://cdn.adscientificindex.com/logos/4480.png)
![Japan](/flags/jp.png)
![Atsushi Ohwaki](https://cdn.adscientificindex.com/pictures/d1/5010590.jpg)
Biodiversity conservation
Community ecology
Forest
Grassland
Satoyama
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
237
142
0.599
* Total Citation Counts Rankings
World Rank
1,248,448
Country Rank
22,970
Institution Rank : 5
![](https://cdn.adscientificindex.com/logos/4480.png)
![Japan](/flags/jp.png)
![Yuki Oya](/user/assets/images/profile/no-profile-photo.png)
Polycladida、Taxonomy、Phylogeny
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
158
156
0.987
* Total Citation Counts Rankings
World Rank
1,253,513
Country Rank
23,056
Institution Rank : 6
![](https://cdn.adscientificindex.com/logos/4480.png)
![Japan](/flags/jp.png)
![Ayako Yamamoto](/user/assets/images/profile/no-profile-photo.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
156
123
0.788
* Total Citation Counts Rankings
World Rank
1,487,483
Country Rank
26,892
Institution Rank : 7
![](https://cdn.adscientificindex.com/logos/4480.png)
![Japan](/flags/jp.png)
![Damon Brewster](/user/assets/images/profile/no-profile-photo.png)
motivation
technology in education
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
78
39
0.500
* Total Citation Counts Rankings
World Rank
1,786,682
Country Rank
31,407
Institution Rank : 8
![](https://cdn.adscientificindex.com/logos/4480.png)
![Japan](/flags/jp.png)
![Marcos Benevides](/pictures/32/4318905.jpg)
task-based language teaching
ELT materials writing
extensive reading
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29
12
0.414
* Total Citation Counts Rankings
World Rank
2,038,247
Country Rank
35,044
Institution Rank : 9
![](https://cdn.adscientificindex.com/logos/4480.png)
![Japan](/flags/jp.png)
![林秀紀](/user/assets/images/profile/no-profile-photo.png)
デザイン
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8
8
1.000
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
158,208
![Japan](/flags/jp.png)
3,101
![](https://cdn.adscientificindex.com/logos/4480.png)
1
Takashi Inoguchi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,348
1,405
0.221
![](https://cdn.adscientificindex.com/logos/4480.png)
Political Science
International Relations
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
348,264
![Japan](/flags/jp.png)
7,146
![](https://cdn.adscientificindex.com/logos/4480.png)
2
Shuichiro Watanabe
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,663
775
0.291
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
690,968
![Japan](/flags/jp.png)
13,446
![](https://cdn.adscientificindex.com/logos/4480.png)
3
Seiho Sugawara
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
941
436
0.463
![](https://cdn.adscientificindex.com/logos/4480.png)
electrochemistry
catalysis
chemical engineering
fuel cells
hydrogen
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,119,048
![Japan](/flags/jp.png)
20,668
![](https://cdn.adscientificindex.com/logos/4480.png)
4
Atsushi Ohwaki
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
237
142
0.599
![](https://cdn.adscientificindex.com/logos/4480.png)
Biodiversity conservation
Community ecology
Forest
Grassland
Satoyama
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,248,448
![Japan](/flags/jp.png)
22,970
![](https://cdn.adscientificindex.com/logos/4480.png)
5
Yuki Oya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
158
156
0.987
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,253,513
![Japan](/flags/jp.png)
23,056
![](https://cdn.adscientificindex.com/logos/4480.png)
6
Ayako Yamamoto
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
156
123
0.788
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,487,483
![Japan](/flags/jp.png)
26,892
![](https://cdn.adscientificindex.com/logos/4480.png)
7
Damon Brewster
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
78
39
0.500
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,786,682
![Japan](/flags/jp.png)
31,407
![](https://cdn.adscientificindex.com/logos/4480.png)
8
Marcos Benevides
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29
12
0.414
![](https://cdn.adscientificindex.com/logos/4480.png)
task-based language teaching
ELT materials writing
extensive reading
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
2,038,247
![Japan](/flags/jp.png)
35,044
![](https://cdn.adscientificindex.com/logos/4480.png)
9
林秀紀
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8
8
1.000