Chang, Heejun
Portland State University
Rank:
Overall Rank
Rank in the SubField 1
Publications
Citations
Data for the year: 2025
Main Field
Engineering
SubField 1
Environmental Engineering
SubField 2
Geography
Rank in the SubField 1 (Environmental Engineering): 103 out of 64516 authors
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 21892 | 24522 |
| Total Cites | 976 | 1036 |
| H-index | 15.00 | 15.00 |
| Hm-index | 8.89 | 8.70 |
| Number of Single Authored Papers | 5 | 5 |
| Total Cites to Single Authored Papers | 26 | 27 |
| Number of Single+First Authored Papers | 36 | 36 |
| Total Cites to Single+First Authored Papers | 177 | 185 |
| Number of Single+First+Last Authored Papers | 97 | 97 |
| Total Cites to Single+First+Last Authored Papers | 592 | 625 |
| Composite Score | 3.21 | 3.21 |
| Number of Distinct Citing Papers | 888.00 | 911.00 |
| Ratio of Total Citations to Distinct Citing Papers | 1.10 | 1.14 |
| Self-Citation Percentage: | ||
Data for the year: 2024
Main Field
Engineering
SubField 1
Environmental Engineering
SubField 2
Geography
Rank in the SubField 1 (Environmental Engineering): 98 out of 60423 authors
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 20346 | 21355 |
| Total Cites | 804 | 887 |
| H-index | 15.00 | 15.00 |
| Hm-index | 8.98 | 8.93 |
| Number of Single Authored Papers | 5 | 5 |
| Total Cites to Single Authored Papers | 36 | 38 |
| Number of Single+First Authored Papers | 35 | 35 |
| Total Cites to Single+First Authored Papers | 150 | 171 |
| Number of Single+First+Last Authored Papers | 96 | 96 |
| Total Cites to Single+First+Last Authored Papers | 518 | 568 |
| Composite Score | 3.23 | 3.24 |
| Number of Distinct Citing Papers | 737.00 | 762.00 |
| Ratio of Total Citations to Distinct Citing Papers | 1.09 | 1.16 |
| Self-Citation Percentage: | ||
Data for the year: 2023
Main Field
Engineering
SubField 1
Environmental Engineering
SubField 2
Meteorology & Atmospheric Sciences
Rank in the SubField 1 (Environmental Engineering): 97 out of 57175 authors
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 20104 | 19762 |
| Total Cites | 764 | 824 |
| H-index | 13.00 | 14.00 |
| Hm-index | 8.83 | 9.37 |
| Number of Single Authored Papers | 5 | 5 |
| Total Cites to Single Authored Papers | 53 | 56 |
| Number of Single+First Authored Papers | 35 | 35 |
| Total Cites to Single+First Authored Papers | 173 | 189 |
| Number of Single+First+Last Authored Papers | 93 | 93 |
| Total Cites to Single+First+Last Authored Papers | 513 | 551 |
| Composite Score | 3.26 | 3.30 |
| Number of Distinct Citing Papers | 696.00 | 721.00 |
| Ratio of Total Citations to Distinct Citing Papers | 1.10 | 1.14 |
| Self-Citation Percentage: | ||
Data for the year: 2022
Main Field
Engineering
SubField 1
Environmental Engineering
SubField 2
Meteorology & Atmospheric Sciences
Rank in the SubField 1 (Environmental Engineering): 125 out of 54000 authors
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 25004 | 23918 |
| Total Cites | 589 | 672 |
| H-index | 12.00 | 13.00 |
| Hm-index | 8.56 | 9.06 |
| Number of Single Authored Papers | 5 | 5 |
| Total Cites to Single Authored Papers | 46 | 48 |
| Number of Single+First Authored Papers | 35 | 35 |
| Total Cites to Single+First Authored Papers | 149 | 164 |
| Number of Single+First+Last Authored Papers | 89 | 89 |
| Total Cites to Single+First+Last Authored Papers | 426 | 485 |
| Composite Score | 3.19 | 3.25 |
| Number of Distinct Citing Papers | 530.00 | 561.00 |
| Ratio of Total Citations to Distinct Citing Papers | 1.11 | 1.20 |
| Self-Citation Percentage: | ||
Data for the year: 2021
Main Field
Engineering
SubField 1
Environmental Engineering
SubField 2
Meteorology & Atmospheric Sciences
Rank in the SubField 1 (Environmental Engineering): 123 out of 51126 authors
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 23554 | 24474 |
| Total Cites | 872 | 970 |
| H-index | 14.00 | 15.00 |
| Hm-index | 11.00 | 11.00 |
| Number of Single Authored Papers | 5 | 5 |
| Total Cites to Single Authored Papers | 78 | 81 |
| Number of Single+First Authored Papers | 32 | 32 |
| Total Cites to Single+First Authored Papers | 215 | 229 |
| Number of Single+First+Last Authored Papers | 77 | 77 |
| Total Cites to Single+First+Last Authored Papers | 607 | 669 |
| Composite Score | 3.32 | 3.35 |
| Number of Distinct Citing Papers | 763.00 | 801.00 |
| Ratio of Total Citations to Distinct Citing Papers | 1.14 | 1.21 |
| Self-Citation Percentage: | ||
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