This study investigates the article processing charges for 160 journals independently launched by a pioneering open access journal publisher, BMC (formerly known as BioMed Central), and identifies the factors influencing the revisions. The study finds that BMC raised the article processing charges for 105 out of 160 journals from 2018 to 2019, while 35 journals reduced prices and the remaining 20 did not change them at all. This study also finds that frequently cited journals significantly raise their article processing charges, while journals recently launched with low citation scores reduce them. The results suggest that BMC considers factors other than costs when revising article processing charges.

中文翻译：

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BMC 期刊文章处理费用修订的决定因素

本研究调查了领先的开放获取期刊出版商 BMC（前身为 BioMed Central）独立发行的 160 种期刊的文章处理费用，并确定了影响修订的因素。研究发现，BMC 在 2018 年至 2019 年间对 160 种期刊中的 105 种提高了文章处理费，而 35 种期刊降低了价格，其余 20 种则根本没有改变。该研究还发现，经常被引用的期刊会显着提高其文章处理费用，而最近推出的引用分数较低的期刊会降低这些费用。结果表明，BMC 在修改文章处理费用时考虑了成本以外的因素。