This article is the editorial to issue 1 of volume 19 of this journal. It announces the journal is now a quarterly publication and comments on changes to the editorial board.

中文翻译：

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去季刊！

本文为本刊第19卷第1期社论。它宣布该杂志现在是季刊，并对编辑委员会的变化发表评论。