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Applied Mathematics and Nonlinear Sciences
Volume 9 (2024): Issue 1 (January 2024)
Open Access
An empirical study on the economic linkage characteristics of Yangtze River port cities based on discrete second-order derivatives
Fang Xie
Fang Xie
and
Bingliang Song
Bingliang Song
| Jun 03, 2023
Applied Mathematics and Nonlinear Sciences
Volume 9 (2024): Issue 1 (January 2024)
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Published Online:
Jun 03, 2023
Page range:
-
Received:
Jun 23, 2022
Accepted:
Oct 26, 2022
DOI:
https://doi.org/10.2478/amns.2023.1.00213
Keywords
Discrete second-order derivatives
,
Hong Kong-city economic linkage
,
Correlation analysis method
,
Gray correlation model
,
Development indicators
© 2023 Fang Xie et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.