Cited half-life什么意思
Web1. The principle of sensor digital sum calculated technology is discussed,and the application of digital sum calculated technology in steel works of Shijiazhuang Iron …
Cited half-life什么意思
Did you know?
WebMar 23, 2024 · One format involves calculating a mass amount of the original isotope. Using the equation below, we can determine how much of the original isotope remains after a certain interval of time. how much mass remains = 1 2n(original mass) n is the number of half-lives. Example 5.7.1. WebNov 10, 2024 · 被引用半衰期 (Cited Half-Life) 旨在計算某一期刊所出版的論文平均經過多久時間，仍然會被引用。. 理論上是將統計資料庫所有收納的期刊論文在當年引用該期刊之論文，根據引用論文出版年份的篇數由當年開始往回累計，當被引用的論文篇數達到全部 …
WebSep 2, 2024 · SCI刊物还分为影响因子高区（大于1.105)、中区 (在1.105和0.422之间）和低区（小于0.422)3类。. 衡量期刊特性的，除了影响因子外，还有及时指数（Immediacy Index)和被引用半衰期（Cited Half Life)。. 及时指数 是指一种期刊当年发表的文献在当年被引用的次数与当年的 ... WebThe cited half-life means that half of the articles cited within the year are older than the score in number of years, and half are younger. Example: a Cited Half-Life of 8 in 2024 means that half the journal’s articles cited in 2024 were published in or prior to eight years ago, and half were published within eight years of 2024.
WebDec 18, 2013 · Measuring usage half-life–the median age of articles downloaded from a publisher’s website–just 3% of journals had half-lives shorter than 12 months. Nearly 17% of all journals had usage half-lives exceeding six years. While journal usage half-lives were typically shorter for journals in the Health Sciences (median half-life: 25-36 months ... WebIt has a half-life of about 41/2 billion years . 它的半衰期大约为45亿年。 The half-life of francium is 22 minutes . 钫的半衰期是22分钟。 Evolutionists have recently learned that …
WebWhat is Cited Half-life. 1. A measure developed by the Institute for Scientific Information (ISI) of the number of publication years from the current year which account for 50% of the current citations received by a journal (Reitz, 2004). Learn more in: Citation Based Indicators in Evaluation of Quality and Performance of Research and Researchers.
WebApr 29, 2015 · By definition, half of the articles in a journal will be older than the cited half-life; the other half will be younger. The concept of half-life can also be applied to article downloads. For the entire dataset of journals, the mean weighted cited half-life was 6.5 years, which grew at a rate of 0.13 years per annum. bjorn alturaWeb3! Lastly,!nearly!17.5%!ofcited!halfAlife!observationswerelistedinthedatasetas>10, meaning!a!halfAlifegreaterthan10years.Theseobservationswererecodedas11sothat bjorn andersen actorWebCited Half-Life. The Cited Half-Life of a journal is the median age of the articles in the journal that were cited in Clarivate Analytics' Journal Citation Reports (JCR) each year. … bjorn and astridWebNov 25, 2024 · 云尔SCI. 被引用半衰期（cited halflife）. 是计算某一期刊所登的论文平均经过多长时间，仍然还会被引用。. 计算的方法是从当年往前累计，当年被引用的论文篇数达到全部的50%时，该篇论文的出版年到当年的间隔年数即为此期刊的被引用半衰期。. 半衰期的 … datho mfg inc sewing machinesWebNov 10, 2024 · 被引用半衰期 (Cited Half-Life) 旨在計算某一期刊所出版的論文平均經過多久時間，仍然會被引用。. 理論上是將統計資料庫所有收納的期刊論文在當年引用該期刊之 … bjorn and abbaWeb被引用半衰期 (Cited Half-life) 是确定被引用期刊的年龄基准，表征的是一份期刊从当前年度向前推算引用数占截止当前年度被引用期刊的总引用数50%的年数。. 简单说就是指期刊达到50%被引用率所需要的时间，这个指标可以衡量期刊老化速度快慢的程度。. 被引 ... bjorn and buckyWebApr 28, 2015 · Analyzing 13,455 journals listed in the Journal Citation Report (Thomson Reuters) from 1997 through 2013, we report that the mean cited half-life of the scholarly … bjorn and benny musicals