Okumura, Hajime
National Institute of Advanced Industrial Science and Technology,
Japan
2025 Rank: 78,859
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:
Physics & Astronomy
SubField 1:
Applied Physics
SubField 2:
Materials
Rank in SubField 1: 1,957 out of 314,640 Researchers
Data For The Year: 2025
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 78,859 | 75,410 |
| Total Cites | 5,943 | 7,124 |
| H-index | 42 | 47 |
| Hm-index | 17 | 20 |
| Number of Single Authored Papers | 3 | 3 |
| Total Cites to Single Authored Papers | 315 | 317 |
| Number of Single+First Authored Papers | 27 | 27 |
| Total Cites to Single+First Authored Papers | 1,130 | 1,221 |
| Number of Single+First+Last Authored Papers | 176 | 176 |
| Total Cites to Single+First+Last Authored Papers | 3,170 | 3,715 |
| Composite Score | 3 | 3 |
| Number of Distinct Citing Papers | 4,917 | 5,506 |
| Ratio of Total Citations to Distinct Citing Papers | 1.21 | 1.29 |
| Self-Citation Percentage |
16.58%
|
|
Okumura, Hajime
National Institute of Advanced Industrial Science and Technology,
Japan
2024 Rank: 77,854
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:
Physics & Astronomy
SubField 1:
Applied Physics
SubField 2:
Materials
Rank in SubField 1: 2,001 out of 304,738 Researchers
Data For The Year: 2024
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 77,854 | 75,705 |
| Total Cites | 5,709 | 6,906 |
| H-index | 41 | 45 |
| Hm-index | 17 | 19 |
| Number of Single Authored Papers | 3 | 3 |
| Total Cites to Single Authored Papers | 288 | 290 |
| Number of Single+First Authored Papers | 26 | 26 |
| Total Cites to Single+First Authored Papers | 1,084 | 1,180 |
| Number of Single+First+Last Authored Papers | 175 | 175 |
| Total Cites to Single+First+Last Authored Papers | 3,036 | 3,589 |
| Composite Score | 3 | 3 |
| Number of Distinct Citing Papers | 4,726 | 5,312 |
| Ratio of Total Citations to Distinct Citing Papers | 1.21 | 1.30 |
| Self-Citation Percentage |
17.33%
|
|
Okumura, Hajime
University of Tsukuba,
Japan
2023 Rank: 76,554
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:
Physics & Astronomy
SubField 1:
Applied Physics
SubField 2:
Materials
Rank in SubField 1: 2,030 out of 295,432 Researchers
Data For The Year: 2023
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 76,554 | 72,522 |
| Total Cites | 5,516 | 6,712 |
| H-index | 40 | 44 |
| Hm-index | 16 | 19 |
| Number of Single Authored Papers | 3 | 3 |
| Total Cites to Single Authored Papers | 268 | 270 |
| Number of Single+First Authored Papers | 26 | 26 |
| Total Cites to Single+First Authored Papers | 1,048 | 1,145 |
| Number of Single+First+Last Authored Papers | 179 | 179 |
| Total Cites to Single+First+Last Authored Papers | 2,913 | 3,465 |
| Composite Score | 3 | 3 |
| Number of Distinct Citing Papers | 4,551 | 5,132 |
| Ratio of Total Citations to Distinct Citing Papers | 1.21 | 1.31 |
| Self-Citation Percentage |
17.82%
|
|
Okumura, Hajime
National Institute of Advanced Industrial Science and Technology,
Japan
2022 Rank: 71,747
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:
Physics & Astronomy
SubField 1:
Applied Physics
SubField 2:
Materials
Rank in SubField 1: 1,942 out of 289,917 Researchers
Data For The Year: 2022
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 71,747 | 70,878 |
| Total Cites | 5,255 | 6,436 |
| H-index | 39 | 42 |
| Hm-index | 16 | 18 |
| Number of Single Authored Papers | 3 | 3 |
| Total Cites to Single Authored Papers | 252 | 254 |
| Number of Single+First Authored Papers | 26 | 26 |
| Total Cites to Single+First Authored Papers | 1,015 | 1,112 |
| Number of Single+First+Last Authored Papers | 175 | 175 |
| Total Cites to Single+First+Last Authored Papers | 2,756 | 3,301 |
| Composite Score | 3 | 3 |
| Number of Distinct Citing Papers | 4,336 | 4,908 |
| Ratio of Total Citations to Distinct Citing Papers | 1.21 | 1.31 |
| Self-Citation Percentage |
18.35%
|
|
Okumura, Hajime
National Institute of Advanced Industrial Science and Technology,
Japan
2021 Rank: 69,442
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:
Physics & Astronomy
SubField 1:
Applied Physics
SubField 2:
Materials
Rank in SubField 1: 1,802 out of 269,833 Researchers
Data For The Year: 2021
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 69,442 | 69,039 |
| Total Cites | 5,123 | 6,288 |
| H-index | 38 | 41 |
| Hm-index | 16 | 18 |
| Number of Single Authored Papers | 3 | 3 |
| Total Cites to Single Authored Papers | 242 | 244 |
| Number of Single+First Authored Papers | 27 | 27 |
| Total Cites to Single+First Authored Papers | 994 | 1,090 |
| Number of Single+First+Last Authored Papers | 176 | 176 |
| Total Cites to Single+First+Last Authored Papers | 2,679 | 3,214 |
| Composite Score | 3 | 3 |
| Number of Distinct Citing Papers | 4,223 | 4,787 |
| Ratio of Total Citations to Distinct Citing Papers | 1.21 | 1.31 |
| Self-Citation Percentage |
18.53%
|
|
Okumura, Hajime
National Institute of Advanced Industrial Science and Technology,
Japan
2020 Rank: 64,940
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:
Physics & Astronomy
SubField 1:
Applied Physics
SubField 2:
Materials
Rank in SubField 1: 1,627 out of 224,856 Researchers
Data For The Year: 2020
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 64,940 | 64,409 |
| Total Cites | 4,997 | 6,171 |
| H-index | 38 | 39 |
| Hm-index | 16 | 18 |
| Number of Single Authored Papers | 3 | 3 |
| Total Cites to Single Authored Papers | 220 | 222 |
| Number of Single+First Authored Papers | 30 | 30 |
| Total Cites to Single+First Authored Papers | 968 | 1,064 |
| Number of Single+First+Last Authored Papers | 183 | 183 |
| Total Cites to Single+First+Last Authored Papers | 2,549 | 3,071 |
| Composite Score | 3 | 3 |
| Number of Distinct Citing Papers | 4,084 | 4,633 |
| Ratio of Total Citations to Distinct Citing Papers | 1.22 | 1.33 |
| Self-Citation Percentage |
19.02%
|
|
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