Productivity Rankings is a unique service offered only by “AD Scientific Index”. This is a ranking system derived from the i10 index in order to show the productivity of the scientist in publishing scientific articles of value. Productivity Rankings is an instrument that lists productive scientists in a given area, discipline, university, and country and can guide the development of meaningful incentives and academic policies. The world rankings, regional rankings, and university rankings of scientists in this table are developed based on the total i10 index. Click for "last 6 years' i10 index". Also see: Universities Rankings 2024 (Sort by : Total i10 Index) and Universities Rankings 2024 (Sort by : Last 6 Years i10 Index)
* Total i10 Index Rankings
World Rank
597,264
Country Rank
12,606
Institution Rank : 138
![](https://cdn.adscientificindex.com/logos/6558.jpg)
![Japan](/flags/jp.png)
![Hiroaki Somura](https://cdn.adscientificindex.com/pictures/16/544710.jpg)
Hydrology
Irrigation and Drainage
Watershed Management
Water Quality
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
22
10
0.455
* Total i10 Index Rankings
Rankings
![](/assets/images/world-icon.png)
597,264
![Japan](/flags/jp.png)
12,606
![](https://cdn.adscientificindex.com/logos/6558.jpg)
138
Hiroaki Somura
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
22
10
0.455
![](https://cdn.adscientificindex.com/logos/6558.jpg)
Hydrology
Irrigation and Drainage
Watershed Management
Water Quality