According to the Journal Citation Reports, Science's 2019 impact factor was
41.845
. Although it is the journal of the AAAS, membership in the AAAS is not required to publish in Science. Papers are accepted from authors around the world.
What is scientific impact factor?
The impact factor (IF) or journal impact factor (JIF) of an academic journal is a scientometric index calculated by Clarivate that
reflects the yearly average number of citations of articles published in the last
two years in a given journal, as indexed by Clarivate's Web of Science. …
Is an impact factor of 2.5 good?
In most fields, the impact factor of
10 or greater is considered an excellent score
while 3 is flagged as good and the average score is less than 1. This is a rule of thumb. … The impact factor is a subjective matter and has the most meaning only when comparing journals within similar fields.
Is PNAS a top journal?
PNAS is
the second most cited scientific journal
, with more than 1.9 million cumulative citations from 2008 to 2018. In the mass media, PNAS has been described variously as “prestigious”, “sedate”, “renowned”, and “high impact”. … Since January 2019, PNAS is online-only, although print issues are available on-demand.
How do I find impact factor?
The impact factor of a journal is
calculated by dividing the number of current year citations to the source items published in that journal during the previous two years
. It is denoted as a ratio between citations and recent citable items published.
What is the highest impact factor?
- CA- A Cancer Journal for Clinicians | 435,4.
- Natural Review Materials | 123,7.
- Quarterly Journal of Economics | 22,7.
- Nature Reviews Genetics | 73,5.
- Cell | 58,7.
- Journal of Political Economy | 12,1.
- New England Journal of Medicine | 66,1.
- Econometrica | 8,1.
What is the h-index?
The h index is
a metric for evaluating the cumulative impact of an author's scholarly output and performance
; measures quantity with quality by comparing publications to citations. The h index corrects for the disproportionate weight of highly cited publications or publications that have not yet been cited.
What is Scopus index?
Scopus is
citation database that gives quality measure for each title
while impact factor reflects the yearly average number of citation of articles published in the last two years in a given journal.
What is SJIF impact factor?
The SJIF refers to “Scientific Journal Impact Factor” and RJIF to “
Research Journal Impact Factor
.” The former is an indexing service for journals while the latter is used to evaluate the prestige of journals.
What is high impact journal?
A ‘high impact' journal is
one where its articles are regulalrly cited across the academic spectrum
– and especially if they are cited in other high impact journals. Citation indexes were first developed in the 1950s as a means to measure ‘Impact Factor' of journals.
Is it hard to publish in PNAS?
Its impact factor is less than that of Science but nonetheless
it is highly competitive
. Publishing in PNAS is not an easy job even if you think your work is good enough. In general Science publishes strikingly novel work while Nature usually publishes extensive work.
Is science or nature better?
Science also has a more explicit goal of outreach to the public; lots more about public engagement, educational techniques, and non-academic careers.
Nature is for people
inside the tent; generally the features up front are more demanding from the reader, and in my opinion show better literary style.
Is PNAS high impact?
The Proceedings of the National Academy of Sciences (PNAS), the official journal of the National Academy of Sciences (NAS), is
an authoritative source of high-impact
, original research that broadly spans the biological, physical, and social sciences.
What is immediacy factor?
The Immediacy Index is
the average number of times an article is cited in the year it is published
. It indicates how quickly articles in a journal are cited. … The Immediacy Index is calculated by dividing the number of citations to articles published in a given year by the number of articles published in that year.
What is a good h-index?
We found that, on average, assistant professors have an h-index of 2-5, associate professors 6-10, and full professors 12-24. These are mean or median values only—the distribution of values at each rank is very wide. If you hope to win a Nobel Prize, your h-index should be
at least 35 and preferably closer to 70
.
What is the Impact Factor of Elsevier journal?
A first time impact factor, the journal has been credited with a factor of
8.571
, ranking #6 in the JCR category Astronomy & Astrophysics, the highest among non-review journals!
