Does China's high-speed rail development lead to regional disparities? A network perspective.

Transp Res Part A Policy Pract · 2020 · PMC7306752 · PMID 32834667

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a clear trendno p-value reported

In contrast, there is a clear trend of convergence in harmonic centrality both between different tiers and within the same tier.

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a decreasing trendno p-value reported

The inequality in betweenness within each tier also shows a decreasing trend, but it has experienced substantial increase and decrease in various years until 2014, especially for tier 2 and tier 3 cities.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.