The closeness centrality of major ports in Northeast Asia from 2017 to 2020
| Country | Port | In-closeness | Out-closeness | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 2017 | 2018 | 2019 | 2020 | 2017 | 2018 | 2019 | 2020 | ||
| Korea | 1. Busan | 0.396 | 0.401 | 0.408 | 0.382 | 0.432 | 0.427 | 0.423 | 0.392 |
| 2. Incheon | 0.316 | 0.319 | 0.321 | 0.308 | 0.352 | 0.344 | 0.341 | 0.325 | |
| 3. Gwangyang | 0.328 | 0.330 | 0.331 | 0.316 | 0.372 | 0.374 | 0.367 | 0.345 | |
| 4. Ulsan | 0.307 | 0.310 | 0.313 | 0.301 | 0.313 | 0.314 | 0.312 | 0.297 | |
| Japan | 1. Yokohama | 0.335 | 0.336 | 0.339 | 0.323 | 0.372 | 0.371 | 0.368 | 0.344 |
| 2. Kobe | 0.350 | 0.353 | 0.365 | 0.344 | 0.362 | 0.347 | 0.342 | 0.331 | |
| 3. Nagoya | 0.327 | 0.332 | 0.335 | 0.319 | 0.347 | 0.344 | 0.337 | 0.324 | |
| 4. Tokyo | 0.337 | 0.340 | 0.348 | 0.325 | 0.369 | 0.366 | 0.366 | 0.343 | |
| 5. Osaka | 0.307 | 0.309 | 0.314 | 0.295 | 0.364 | 0.362 | 0.359 | 0.339 | |
| Taiwan | 1. Kaohsiung | 0.367 | 0.371 | 0.374 | 0.353 | 0.407 | 0.396 | 0.395 | 0.368 |
| 2. Taipei | 0.314 | 0.310 | 0.314 | 0.301 | 0.352 | 0.352 | 0.350 | 0.333 | |
| 3. Taichung | 0.299 | 0.300 | 0.306 | 0.295 | 0.317 | 0.303 | 0.311 | 0.288 | |
| China | 1. Shanghai | 0.387 | 0.389 | 0.396 | 0.372 | 0.411 | 0.412 | 0.414 | 0.392 |
| 2. Shenzhen | 0.390 | 0.383 | 0.391 | 0.368 | 0.389 | 0.385 | 0.382 | 0.368 | |
| 3. Hong Kong | 0.281 | 0.378 | 0.382 | 0.359 | 0.329 | 0.408 | 0.404 | 0.374 | |
| 4. Ningbo | 0.368 | 0.368 | 0.377 | 0.356 | 0.397 | 0.399 | 0.395 | 0.372 | |
| 5. Qingdao | 0.357 | 0.357 | 0.359 | 0.329 | 0.397 | 0.398 | 0.393 | 0.368 | |
| 6. Xiamen | 0.336 | 0.335 | 0.362 | 0.342 | 0.387 | 0.384 | 0.379 | 0.354 | |
| 7. Dalian | 0.322 | 0.326 | 0.329 | 0.316 | 0.365 | 0.365 | 0.364 | 0.345 | |
| 8. Tianjin | 0.323 | 0.321 | 0.325 | 0.312 | 0.390 | 0.388 | 0.383 | 0.359 | |
| Country | Port | In-closeness | Out-closeness | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 2017 | 2018 | 2019 | 2020 | 2017 | 2018 | 2019 | 2020 | ||
| Korea | 1. Busan | 0.396 | 0.401 | 0.408 | 0.382 | 0.432 | 0.427 | 0.423 | 0.392 |
| 2. Incheon | 0.316 | 0.319 | 0.321 | 0.308 | 0.352 | 0.344 | 0.341 | 0.325 | |
| 3. Gwangyang | 0.328 | 0.330 | 0.331 | 0.316 | 0.372 | 0.374 | 0.367 | 0.345 | |
| 4. Ulsan | 0.307 | 0.310 | 0.313 | 0.301 | 0.313 | 0.314 | 0.312 | 0.297 | |
| Japan | 1. Yokohama | 0.335 | 0.336 | 0.339 | 0.323 | 0.372 | 0.371 | 0.368 | 0.344 |
| 2. Kobe | 0.350 | 0.353 | 0.365 | 0.344 | 0.362 | 0.347 | 0.342 | 0.331 | |
| 3. Nagoya | 0.327 | 0.332 | 0.335 | 0.319 | 0.347 | 0.344 | 0.337 | 0.324 | |
| 4. Tokyo | 0.337 | 0.340 | 0.348 | 0.325 | 0.369 | 0.366 | 0.366 | 0.343 | |
| 5. Osaka | 0.307 | 0.309 | 0.314 | 0.295 | 0.364 | 0.362 | 0.359 | 0.339 | |
| Taiwan | 1. Kaohsiung | 0.367 | 0.371 | 0.374 | 0.353 | 0.407 | 0.396 | 0.395 | 0.368 |
| 2. Taipei | 0.314 | 0.310 | 0.314 | 0.301 | 0.352 | 0.352 | 0.350 | 0.333 | |
| 3. Taichung | 0.299 | 0.300 | 0.306 | 0.295 | 0.317 | 0.303 | 0.311 | 0.288 | |
| China | 1. Shanghai | 0.387 | 0.389 | 0.396 | 0.372 | 0.411 | 0.412 | 0.414 | 0.392 |
| 2. Shenzhen | 0.390 | 0.383 | 0.391 | 0.368 | 0.389 | 0.385 | 0.382 | 0.368 | |
| 3. Hong Kong | 0.281 | 0.378 | 0.382 | 0.359 | 0.329 | 0.408 | 0.404 | 0.374 | |
| 4. Ningbo | 0.368 | 0.368 | 0.377 | 0.356 | 0.397 | 0.399 | 0.395 | 0.372 | |
| 5. Qingdao | 0.357 | 0.357 | 0.359 | 0.329 | 0.397 | 0.398 | 0.393 | 0.368 | |
| 6. Xiamen | 0.336 | 0.335 | 0.362 | 0.342 | 0.387 | 0.384 | 0.379 | 0.354 | |
| 7. Dalian | 0.322 | 0.326 | 0.329 | 0.316 | 0.365 | 0.365 | 0.364 | 0.345 | |
| 8. Tianjin | 0.323 | 0.321 | 0.325 | 0.312 | 0.390 | 0.388 | 0.383 | 0.359 | |
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