慢，慢，快，快，慢：十年来观察到的五个Altmetric来源显示了研究年龄，注意力来源成熟度和开放获取状态的演变趋势
Slow, slow, quick, quick, slow: five altmetric sources observed over a decade show evolving trends, by research age, attention source maturity and open access status
摘要：
在altmetrics的时间趋势的研究是欠发达的，这个多年的观察研究解决了一些赤字，在我们的理解altmetrics的行为随着时间的推移。围绕研究成果的关注，部分由altmetrics或替代指标捕获，构成了许多不同形式的数据。在2008年至2013年期间，对一组7739份文件进行了六次抽样。记录了五个altmetric数据源（Twitter，Mendeley，新闻，博客和政策），并分析了时间趋势，特别注意他们的开放获取状态和纪律。Twitter的关注开始和结束都很快。Mendeley的读者积累很快，并在接下来的几年里继续增长。新闻和博客的关注是快速启动，虽然新闻关注持续了较长的时间。政策文件中的引用起步缓慢，据观察，在出版后十多年内不断增加。随着时间的推移，Twitter活动的增长得到了证实，同时博客关注度明显下降。据观察，Mendeley的使用量在增长，但最近有下降的迹象。政策关注被确定为altmetrics研究的影响最慢的形式，并且强烈倾向于人文和社会科学。开放获取Altmetrics优势被认为是随着时间的推移而出现和发展的，每个关注源都显示出不同的趋势。在所有的注意源中，晚现注意的存在得到了证实。
英文摘要：
The study of temporal trends in altmetrics is under-developed, and this multi-year observation study addresses some of the deficits in our understanding of altmetric behaviour over time. The attention surrounding research outputs, as partially captured by altmetrics, or alternative metrics, constitutes many varied forms of data. Over the years 2008-2013, a set of 7739 papers were sampled on six occasions. Five altmetric data sources were recorded (Twitter, Mendeley, News, Blogs and Policy) and analysed for temporal trends, with particular attention being paid to their Open Access status and discipline. Twitter attention both starts and ends quickly. Mendeley readers accumulate quickly, and continue to grow over the following years. News and blog attention is quick to start, although news attention persists over a longer timeframe. Citations in policy documents are slow to start, and are observed to be growing over a decade after publication. Over time, growth in Twitter activity is confirmed, alongside an apparent decline in blogging attention. Mendeley usage is observed to grow, but shows signs of recent decline. Policy attention is identified as the slowest form of impact studied by altmetrics, and one that strongly favours the Humanities and Social Sciences. The Open Access Altmetrics Advantage is seen to emerge and evolve over time, with each attention source showing different trends. The existence of late-emergent attention in all attention sources is confirmed.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
