Elsevier embargo periods, 2013-2016

***Update***: as of June 2016 the 2016 embargo list has been revised. The data below has been updated to reflect the new embargos.----This dataset contains all journal embargo periods published by Elsevier in 2013, 2014, 2015, and 2016, for both UK and non-UK authors. It also contains a set of notes on the overall statistics and annual changes between lists. In summary, 88.5% of Elsevier journals (in 2016) offer a twelve-month or less embargo period for UK authors, and 62% for non-UK authors; this proportion has increased since 2013, as has the number of journals covered. The majority of journals have a stated embargo period, though around 50 titles do not as yet have one. A number of substantial anomalies developed between the lists in 2013 and 2014, with journals being removed or having their embargo periods extended. However, as of 2016, these have generally been corrected.

***更新***：截至2016年6月，2016年出版禁运期（embargo）清单已完成修订，下文所列数据已更新以适配新的禁运期规则。本数据集涵盖爱思唯尔（Elsevier）2013年、2014年、2015年及2016年面向英国作者与非英国作者发布的全部期刊出版禁运期信息，同时包含针对整体统计数据及各年度清单间变化情况的说明文本。综合来看，2016年爱思唯尔旗下88.5%的期刊为英国作者提供时长不超过12个月的出版禁运期，非英国作者的对应比例为62%；该占比自2013年以来持续提升，纳入统计的期刊数量亦同步增长。绝大多数期刊均已明确标注出版禁运期，但仍有近50种期刊尚未公布相关规则。2013年至2014年的清单中出现多起较为严重的异常情况，部分期刊被移除或其出版禁运期被延长。不过截至2016年，此类问题已基本得到修正。