This study first examines how APC expenditures, authorship patterns, and publishing venues of Ukrainian scholars changed between the pre-war (2020-2021) and wartime (2022-2023) periods. Second, it explores the extent to which APC levels are associated with the field-normalized citation impact (FNCI) of Gold Open Access articles authored by Ukrainian scholars. Statistical analysis revealed a small but significant correlation between APC amounts and citation impact, though the effect size was minimal, suggesting higher APCs did not substantially boost citations. APC waivers offered by major publishers such as Springer and Elsevier since 2022 resulted in only a slight increase in the number of articles authored solely by Ukrainian scholars. Despite these waivers, MDPI and Aluna maintained the largest shares. Between 2020 and 2023, the number of articles authored solely by Ukrainian scholars in foreign journals fell by 25.7 percent, and total APC spending declined by 24.6 percent, from 1.24 million EUR to 0.93 million EUR. Medicine accounted for the largest share of both articles and APC expenditure, with the majority published in Aluna journals.

翻译：本研究首先考察了乌克兰学者在战前（2020-2021年）与战时（2022-2023年）两个时期，其APC支出、作者模式及发表渠道的变化情况。其次，本研究探究了APC水平与乌克兰学者发表的黄金开放获取论文在领域标准化引文影响（FNCI）之间的关联程度。统计分析发现，APC金额与引文影响之间存在微弱但显著的相关性，然而效应量极小，表明较高的APC并未显著提升引文次数。自2022年起，Springer和Elsevier等主要出版商提供的APC减免政策仅使乌克兰学者独立作者论文数量略有增加。尽管存在减免政策，MDPI和Aluna仍占据最大份额。2020年至2023年间，乌克兰学者在外国期刊上独立发表的论文数量下降了25.7%，APC总支出从124万欧元降至93万欧元，降幅达24.6%。医学领域在论文数量和APC支出方面均占最大份额，且大部分论文发表在Aluna期刊上。