An empirical study on the economic linkage characteristics of Yangtze River port cities based on discrete second-order derivatives

Pubblicato online: 03 giu 2023

Ricevuto: 23 giu 2022

Accettato: 26 ott 2022

DOI: https://doi.org/10.2478/amns.2023.1.00213

Parole chiave

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.