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
220,634
Country Rank
4,503
Institution Rank : 1
![](https://cdn.adscientificindex.com/logos/6552.png)
![Japan](/flags/jp.png)
![Yasumasa Kato](https://cdn.adscientificindex.com/pictures/ea/417178.jpg)
Acidic extracellular pH
Metastasis
Cancer stem cell
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,517
1,985
0.439
* Total Citation Counts Rankings
World Rank
644,570
Country Rank
12,713
Institution Rank : 2
![](https://cdn.adscientificindex.com/logos/6552.png)
![Japan](/flags/jp.png)
![Tadashi Nishiya](/user/assets/images/profile/no-profile-photo.png)
Signal transduction
protein-protein interaction
SPSB E3 ligase
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,071
154
0.144
* Total Citation Counts Rankings
World Rank
895,212
Country Rank
16,728
Institution Rank : 3
![](https://cdn.adscientificindex.com/logos/6552.png)
![Japan](/flags/jp.png)
![横田理](https://cdn.adscientificindex.com/pictures/7d/4360143.jpg)
Environmental Toxicology
Reproductive Toxicology
Cell Biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
515
272
0.528
* Total Citation Counts Rankings
World Rank
924,699
Country Rank
6,258
Institution Rank : 485
![](https://cdn.adscientificindex.com/logos/11230.jpg)
![Nigeria](/flags/ng.png)
![Ogochuku Ohu](https://cdn.adscientificindex.com/pictures/87/5796526.jpg)
Real Estate
Urban Economics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
466
316
0.678
* Total Citation Counts Rankings
World Rank
1,028,599
Country Rank
19,093
Institution Rank : 4
![](https://cdn.adscientificindex.com/logos/6552.png)
![Japan](/flags/jp.png)
![Fumihiko Suzuki](/user/assets/images/profile/no-profile-photo.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
322
281
0.873
* Total Citation Counts Rankings
World Rank
1,108,639
Country Rank
289,567
Institution Rank : 17
![](https://cdn.adscientificindex.com/logos/2804.png)
![United States](/flags/us.png)
![Ikechukwu Ohu](https://cdn.adscientificindex.com/pictures/5b/4909068.jpg)
user experience (UX)
human factors
human-computer interaction
ergonomics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
245
191
0.780
* Total Citation Counts Rankings
World Rank
1,204,951
Country Rank
22,122
Institution Rank : 5
![](https://cdn.adscientificindex.com/logos/6552.png)
![Japan](/flags/jp.png)
![大島光宏](/user/assets/images/profile/no-profile-photo.png)
生物学全般
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
181
10
0.055
* Total Citation Counts Rankings
World Rank
1,270,502
Country Rank
16,101
Institution Rank : 23
![](https://cdn.adscientificindex.com/logos/5147.jpg)
![Nigeria](/flags/ng.png)
![Eugene Agboifo Ohu](https://cdn.adscientificindex.com/pictures/fd/4641382.jpg)
Organizational Behaviour
Human-Computer Interactions
Virtual / Augmented Reality
Psychology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
148
146
0.986
* Total Citation Counts Rankings
World Rank
1,421,176
Country Rank
25,813
Institution Rank : 6
![](https://cdn.adscientificindex.com/logos/6552.png)
![Japan](/flags/jp.png)
![Naoto Nakagawa](/user/assets/images/profile/no-profile-photo.png)
PharmacoEconomics
Clinical pharmacy
Pharmacy education
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
95
58
0.611
* Total Citation Counts Rankings
World Rank
1,458,976
Country Rank
26,440
Institution Rank : 7
![](https://cdn.adscientificindex.com/logos/6552.png)
![Japan](/flags/jp.png)
![Takayuki Kumamoto](/user/assets/images/profile/no-profile-photo.png)
toxicology
X-chromosome inactivation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
85
33
0.388
* Total Citation Counts Rankings
World Rank
1,648,303
Country Rank
29,390
Institution Rank : 8
![](https://cdn.adscientificindex.com/logos/6552.png)
![Japan](/flags/jp.png)
![Ali Abdulkadir Mohamed](/pictures/96/5010554.jpg)
Agricultural Technology and Development
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
47
28
0.596
* Total Citation Counts Rankings
World Rank
1,998,632
Country Rank
34,476
Institution Rank : 9
![](https://cdn.adscientificindex.com/logos/6552.png)
![Japan](/flags/jp.png)
![広瀬公治](/user/assets/images/profile/no-profile-photo.png)
口腔衛生学
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11
2
0.182
Yasumasa Kato
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,517
1,985
0.439
Acidic extracellular pH
Metastasis
Cancer stem cell
Tadashi Nishiya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,071
154
0.144
Signal transduction
protein-protein interaction
SPSB E3 ligase
横田理
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
515
272
0.528
Environmental Toxicology
Reproductive Toxicology
Cell Biology
Ogochuku Ohu
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
466
316
0.678
Fumihiko Suzuki
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
322
281
0.873
Ikechukwu Ohu
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
245
191
0.780
user experience (UX)
human factors
human-computer interaction
ergonomics
大島光宏
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
181
10
0.055
Eugene Agboifo Ohu
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
148
146
0.986
Organizational Behaviour
Human-Computer Interactions
Virtual / Augmented Reality
Psychology
Naoto Nakagawa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
95
58
0.611
PharmacoEconomics
Clinical pharmacy
Pharmacy education
Takayuki Kumamoto
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
85
33
0.388
Ali Abdulkadir Mohamed
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
47
28
0.596
Agricultural Technology and Development
広瀬公治
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11
2
0.182