O'Really?

January 18, 2013

How to export, delete and move your Mendeley account and library (#mendelete)

Deleteme

Delete. Creative Commons licensed picture by Vitor Sá – Virgu via Flickr.com

News that Reed Elsevier is in talks to buy Mendeley.com will have many scientists reaching for their “delete account” button. Mendeley has built an impressive user-base of scientists and other academics since they started, but the possibility of an Elsevier takeover has worried some of its users. Elsevier has a strained relationship with some groups in the scientific community [1,2], so it will be interesting to see how this plays out.

If you’ve built a personal library of scientific papers in Mendeley, you won’t just want to delete all the data, you’ll need to export your library first, delete your account and then import it into a different tool.

Disclaimer: I’m not advocating that you delete your mendeley account (aka #mendelete), just that if you do decide to, here’s how to do it, and some alternatives to consider. Update April 2013, it wasn’t just a rumour.

Exporting your Mendeley library

Open up Mendeley Desktop, on the File menu select Export. You have a choice of three export formats:

  1. BibTeX (*.bib)
  2. RIS – Research Information Systems (*.ris)
  3. EndNote XML (*.xml)

It is probably best to create a backup in all three formats just in case as this will give you more options for importing into whatever you replace Mendeley with. Another possibility is to use the Mendeley API to export your data which will give you more control over how and what you export, or trawl through the Mendeley forums for alternatives. [update: see also comments below from William Gunn on exporting via your local SQLite cache]

Deleting your Mendeley account #mendelete

Login to Mendeley.com, click on the My Account button (top right), Select Account details from the drop down menu and scroll down to the bottom of the page and click on the link delete your account. You’ll be see a message We’re sorry you want to go, but if you must… which you can either cancel or select Delete my account and all my data. [update] To completely delete your account you’ll need to send an email to privacy at mendeley dot com. (Thanks P.Chris for pointing this out in the comments below)

Alternatives to Mendeley

Once you have exported your data, you’ll need an alternative to import your data into. Fortunately, there are quite a few to choose from [3], some of which are shown in the list below. This is not a comprehensive list, so please add suggestions below in the comments if I missed any obvious ones. Wikipedia has an extensive article which compares all the different reference management software which is quite handy (if slightly bewildering). Otherwise you might consider trying the following software:

One last alternative, if you are fed up with trying to manage all those clunky pdf files, you could just switch to Google Scholar which is getting better all the time. If you decide that Mendeley isn’t your cup of tea, now might be a good time to investigate some alternatives, there are plenty of good candidates to choose from. But beware, you may run from the arms of one large publisher (Elsevier) into the arms of another (Springer or Macmillan which own Papers and ReadCube respectively).

References

  1. Whitfield, J. (2012). Elsevier boycott gathers pace Nature DOI: 10.1038/nature.2012.10010
  2. Van Noorden, R. (2013). Mathematicians aim to take publishers out of publishing Nature DOI: 10.1038/nature.2013.12243
  3. Hull, D., Pettifer, S., & Kell, D. (2008). Defrosting the Digital Library: Bibliographic Tools for the Next Generation Web PLoS Computational Biology, 4 (10) DOI: 10.1371/journal.pcbi.1000204
  4. Attwood, T., Kell, D., McDermott, P., Marsh, J., Pettifer, S., & Thorne, D. (2010). Utopia documents: linking scholarly literature with research data Bioinformatics, 26 (18) DOI: 10.1093/bioinformatics/btq383

August 20, 2012

Digital Research 2012: September 10th-12th at St. Catherine’s College, Oxford, UK

The Radcliffe Camera, Oxford by chensiyuan

The Radcliffe Camera, Oxford by chensiyuan via wikipedia

The UK’s premier Digital Research community event is being held in Oxford 10-12 September 2012. Come along to showcase and share the latest in digital research practice – and set the agenda for tomorrow at Digital Research 2012. The conference features an exciting 3-day programme with a great set of invited speakers together with showcases of the work and vision of the Digital Research community. Here are some highlights of the programme – please see the website digital-research.oerc.ox.ac.uk for the full programme and registration information.

New Science of New Data Symposium and Innovation Showcase  on Monday 10th: Keynotes from Noshir Contractor [1] (Northwestern University) on Web Science, Nigel Shadbolt (Government Information Adviser) on Open Data and a closing address by Kieron O’Hara (computer scientist) – with twitter analytics, geolocated social media and web observatories in between. Also the launch of the Software Sustainability Institute’s Fellows programme and community workshops.

Future of Digital Research on Tuesday 11th: Keynotes from Stevan Harnad on “Digital Research: How and Why the Research Councils UK Open Access Policy Needs to Be Revised” [2], Jim Hendler (Rensselaer Polytechnic Institute) on “Broad Data” (not just big!), and Lizbeth Goodman (University College Dublin) on “SMART spaces by and for SMART people”. Sessions are themed on Open Science with a talk by Peter Murray-Rust, Smart Spaces as a Utility and future glimpses from the community, all culminating in a Roundtable discussion on the Future of Digital Research.

e–Infrastructure Forum and Innovation Showcase on Wednesday 12th opens with a dual-track community innovation showcase, then launch the UK e-Infrastructure Academic Community Forum where Peter Coveney (UK e-Infrastructure Leadership Council and University College London) will present the “state of the nation” followed by a Provider’s Panel, Software, Training and User’s Panel – an important and timely opportunity for the community to review current progress and determine what’s needed in the future.

There’s a lot more happening throughout the event, including an exciting “DevChallenge” hackathon run by DevCSI, software surgery by the Software Sustainability Institute (SSI) and multiple community workshops – plus the Digital Research 2012 dinner in College and a reception in the spectacular Museum of Natural History in Oxford. Digital Research 2012 is very grateful to everyone who has come together to make this event possible, including e-Research South, Open Knowledge Foundation, Web Science, the Digital Social Research programme, our Digital Economy colleagues and the All Hands Foundation.

We look forward to seeing you at Digital Research 2012 in Oxford in September.

References

  1. Lazer, D., Pentland, A., Adamic, L., Aral, S., Barabasi, A.L., Brewer, D., Christakis, N., Contractor, N., Fowler, J., Gutmann, M. & (2009). Social Science: Computational Social Science, Science, 323 (5915) 723. DOI: 10.1126/science.1167742
  2. Stevan Harnad (2012). Open access: A green light for archiving, Nature, 487 (7407) 302. DOI: 10.1038/487302b

August 3, 2012

June 29, 2012

Impact Factor Boxing 2012

Rocky Balboa  Philadelphia, PA

Rocky Balboa, Philadelphia, PA. Creative Commons licensed picture by seng1011 (steve eng) on Flickr.

[This post is part of an ongoing series about impact factors]

In the world of abused performance metrics, the impact factor is the undisputed heavyweight champion of the (publishing) world.

It has been an eventful year in the boxing ring of scientific publishing since the last set of figures were published by Thomson-Reuters. A brand new journal called PeerJ launched with a radical publish ’til you perish business model [1]. There’s another new journal on the way too in the shape of eLifeSciences - with it’s own significant differences from current publishing models. Then there was the Finch report on Open Access. If that wasn’t enough fun, there’s been the Alternative metrics “Altmetrics” movement gathering pace [2], alongside suggestions that the impact factor may be losing its grip on the supposed “title” [3].

The impact factors below are the most recent, published June 28th 2012, covering data from 2011. Love them or loathe them, use them or abuse them, game them or shame them … here is a tiny selection of impact factors for the 10,675 journals that are tracked in Journal Citation Reports (JCR) ordered by increasing punch power.

WARNING: Abusing these figures can seriously damage your Science – you have been warned! Normal caveats apply, see nature.com/metrics.

Journal 2011 data from isiknowledge.com/JCR Eigenfactor™ Metrics
Total Cites Impact Factor 5-Year Impact Factor Immediacy Index Articles Cited Half-life Eigenfactor™ Score Article Influence™ Score
Russian Journal of Cardiology* 3 0.005 0.000 75 0.00000
BMC Bioinformatics 14268 2.751 3.493 0.293 557 4.2 0.07757 1.314
PLoS ONE 75544 4.092 4.537 0.437 13781 2.4 0.50216 1.797
Briefings in Bioinformatics 2859 5.202 7.749 0.692 65 4.3 0.01129 2.857
PLoS Computational Biology 8924 5.215 5.844 0.710 407 3.1 0.06968 2.722
OUP Bioinformatics 43380 5.468 6.051 0.666 707 6.2 0.15922 2.606
Nucleic Acids Research 106520 8.026 7.417 2.016 1230 7.4 0.30497 3.003
Genome Biology 15556 9.036 7.896 1.550 151 5.2 0.08221 4.124
PLoS Biology 20579 11.452 13.630 2.461 180 4.6 0.14975 7.830
Science 480836 31.201 32.452 6.075 871 9.4 1.41282 17.508
Nature 526505 36.280 36.235 9.690 841 9.4 1.65658 20.353
New England Journal of Medicine 232068 53.298 50.075 11.484 349 7.8 0.66466 21.293
CA – A Cancer Journal for Clinicians** 10976 101.780 67.410 21.263 19 3.8 0.04502 24.502

* The Russian Journal of Cardiology is included here for reference as it has the lowest non-zero impact factor of any science journal. A rather dubious honour…

** The Cancer Journal for Clinicians is the highest ranked journal in science, it is included here for reference. Could it be the first journal to have an impact factor of more than 100?

References

  1. Richard Van Noorden (2012). Journal offers flat fee for ‘all you can publish’, Nature, 486 (7402) 166. DOI: 10.1038/486166a
  2. Jason Priem, Heather Piwowar and Bradley Hemminger (2012).  Altmetrics in the wild: Using social media to explore scholarly impact arxiv.org/abs/1203.4745
  3. George Lozano, Vincent Lariviere and Yves Gingras (2012). The weakening relationship between the Impact Factor and papers’ citations in the digital age arxiv.org/abs/1205.4328

May 18, 2012

Web analytics: Numbers speak louder than words

Two hundo! by B. Rosen

Two hundred light painting by B. Rosen, via  Flickr available by Creative Commons license

According to the software which runs this site, this is the 200th post here at O’Really To mark the occasion, here are some stats via WordPress with thoughts and general navel-gazing analysis paralysis [1] on web analytics. It all started just over six years ago at nodalpoint with help from Greg Tyrelle, the last four years have been WordPressed with help from Matt Mullenweg. WordPress stats are unfortunately very primitive compared to the likes of Google Analytics and don’t give you access to the server log files either. WordPress probably flatters to deceive by exaggerating page views and encouraging users to post more content, but it doesn’t count self-visits to the blog. Despite all the usual limitations of the murky underworld of web analytics and SEO, here are the stats, warts and all.

As of May 2012, this blog is just shy of 200,000 page views in total with 500+ comments (genuine) comments and 100,000+ spam comments nuked by the Akismet filter. The busiest day so far was the 15th February 2012 with 931 views of a post in a single day which got linked to by the Wall Street Journal. The regular traffic is pretty steady around the 1,000 views per week (~4000 views per month) mark. Most readers come from the United States, United Kingdom and Germany (jawohl! in that order) which breaks down as follows:

Top posts: What people read when they get here

The most popular pages here are as follows:

Page Views
Home page / Archives 33,977
Impact Factor Boxing 2010 17,267
Impact Factor Boxing 2009 10,652
How many journal articles have been published? 7,181
Impact Factor Boxing 2011 6,635

Are we obsessed with dodgy performance metrics like journal impact factors? I’m not, honest guv’, but lots of people on t’interwebs clearly are.

Top search terms: How people get here

The search engines send traffic here through the following search terms:

Search terms Views
plos biology impact factor 2010 3,175
impact factor 2010 1,631
impact factor 1,589
plos biology impact factor 1,566
impact factor 2009 1,333

Is there a correlation between Obsessive Compulsive Disorder (OCD) and Impact Factor (IF)? Probably. Will it ever stop? Probably not.

Referrals: Spread the link love

It’s not just search engines that send you traffic…

Referrer Views
Search Engines 16,339
cs.man.ac.uk 4,654
Twitter 2,334
friendfeed.com 2,262
flickr.com 2,077
researchblogging.org 1,904
en.wordpress.com 1.037

… social media (twitter, friendfeed, flickr, researchblogging and wordpress etc) refers nearly as much traffic as the search engines do. I fit the demographic of bloggers previously described [1]: male, educated and a life scientist.

Top five clicks: How people leave

This is what people are clicking on:

URL Clicks
isiknowledge.com/JCR 914
feeds2.feedburner.com/oreally 407
en.wikipedia.org/wiki/Dead_on_arrival 396
aps.org/publications/apsnews/200811/zero-gravity.cfm 363
plosbiology.org 305

Dear Thomson Reuters, you should have an associates scheme like Amazon. I’m advertising your commercial product (Journal Citation Reports) for free! I’m far too kind, please send me a generous cheque immediately for my troubles or I will remove all links to your product.

Lots of people looking for the lyrics of the Friends sitcom jingle don’t know what “Your love life’s D.O.A.” means. Glad to be of service.

Conclusions

Traffic here is fairly modest compared to some blogs, but is still significant and to my mind justifies the time spent blogging. It is great fun to blog, and like most things in life, it can be very time consuming to do well. There is a long way to go before reaching the 10,000 hours milestone, maybe one day.

What people are actually interested in reading, and what you think they will be interested in reading are often two completely different things. Solo blogging has disadvantages and it’s been very tempting to try and join one of the many excellent blogging collectives like PLoS Blogs, Occam’s Typewriter or the Guardian science blogs. For the meantime though, going it alone on a personal domain name has it’s advantages too.

So, if you’ve read, commented or linked to this site, thank you very much. I hope you enjoy reading these posts as much as I enjoy writing them. Like smartphones and wifi, it’s hard to imagine life without blogs and bloggers.

References

  1. Shema, H., Bar-Ilan, J., & Thelwall, M. (2012). Research Blogs and the Discussion of Scholarly Information PLoS ONE, 7 (5) DOI: 10.1371/journal.pone.0035869

May 11, 2012

Journal Fire: Bonfire of the Vanity Journals?

Fire by John Curley on Flickr

Fire by John Curley, available via Creative Commons license.

When I first heard about Journal Fire, I thought, Great! someone is going to take all the closed-access scientific journals and make a big bonfire of them! At the top of this bonfire would be the burning effigy of a wicker man, representing the very worst of the vanity journals [1,2].

Unfortunately Journal Fire aren’t burning anything just yet, but what they are doing is something just as interesting. Their web based application allows you to manage and share your journal club online. I thought I’d give it a whirl because a friend of mine asked me what I thought about a paper on ontologies in biodiversity [3]. Rather than post a brief review here, I’ve posted it over at Journal Fire. Here’s some initial thoughts on a quick test drive of their application:

Pros

On the up side Journal Fire:

  • Is a neutral-ish third party space where anyone can discuss scientific papers.
  • Understands common identifiers (DOI and PMID) to tackle the identity crisis.
  • Allows you to post simple anchor links in reviews, but not much else, see below.
  • Does not require you to use cumbersome syntax used in ResearchBlogging [4], ScienceSeeker and elsewhere
  • Is integrated with citeulike, for those that use it
  • It can potentially provide many different reviews of a given paper in one place
  • Is web-based, so you don’t have to download and install any software, unlike alternative desktop systems Mendeley and Utopia docs

Cons

On the down side Journal Fire:

  • Is yet another piece social software for scientists. Do we really need more, when we’ve had far too many already?
  • Requires you to sign up for an account without  re-using your existing digital identity with Google, Facebook, Twitter etc.
  • Does not seem to have many people on it (yet) despite the fact it has been going since at least since 2007.
  • Looks a bit stale, the last blog post was published in 2010. Although the software still works fine, it is not clear if it is being actively maintained and developed.
  • Does not allow much formatting in reviews besides simple links, something like markdown would be good.
  • Does not understand or import arXiv identifiers, at the moment.
  • As far as I can see, Journal Fire is a small startup based in Pasadena, California. Like all startups, they might go bust. If this happens, they’ll take your journal club, and all its reviews down with them.

I think the pros mostly outweigh the cons, so if you like the idea of a third-party hosting your journal club, Journal Fire is worth a trial run.

References

  1. Juan Carlos Lopez (2009) We want your paper! The similarity between high-end restaurants and scientific journals Spoonful of Medicine, a blog from Nature Medicine
  2. NOTE: Vanity journals should not to be confused with the The Vanity Press.
  3. Andrew R. Deans, Matthew J. Yoder & James P. Balhoff (2012). Time to change how we describe biodiversity, Trends in Ecology & Evolution, 27 (2) 84. DOI: 10.1016/j.tree.2011.11.007
  4. Shema, H., Bar-Ilan, J., & Thelwall, M. (2012). Research Blogs and the Discussion of Scholarly Information PLoS ONE, 7 (5) DOI: 10.1371/journal.pone.0035869

February 15, 2012

The Open Access Irony Awards: Naming and shaming them

Ask me about open access by mollyaliOpen Access (OA) publishing aims to make the results of scientific research available to the widest possible audience. Scientific papers that are published in Open Access journals are freely available for crucial data mining and for anyone or anything to read, wherever they may be.

In the last ten years, the Open Access movement has made huge progress in allowing:

“any users to read, download, copy, distribute, print, search, or link to the full texts of these articles, crawl them for indexing, pass them as data to software, or use them for any other lawful purpose, without financial, legal, or technical barriers.”

But there is still a long way to go yet, as much of the world’s scientific knowledge remains locked up behind publisher’s paywalls, unavailable for re-use by text-mining software and inaccessible to the public, who often funded the research through taxation.

Openly ironic?

ironicIronically, some of the papers that are inaccessible discuss or even champion the very Open Access movement itself. Sometimes the lack of access is deliberate, other times accidental – but the consequences are serious. Whether deliberate or accidental, restricted access to public scientific knowledge is slowing scientific progress [1]. Sometimes the best way to make a serious point is to have a laugh and joke about it. This is what the Open Access Irony Awards do, by gathering all the offenders in one place, we can laugh and make a serious point at the same time by naming and shaming the papers in question.

To get the ball rolling, here is are some examples:

  • The Lancet owned by Evilseviersorry I mean Elsevier, recently  published a paper on “the case for open data” [2] (please login to access article). Login?! Not very open…
  • Serial offender and über-journal Science has an article by Elias Zerhouni on the NIH public access policy [3] (Subscribe/Join AAAS to View Full Text), another on “making data maximally available” [4] (Subscribe/Join AAAS to View Full Text) and another on a high profile advocate of open science [5] (Buy Access to This Article to View Full Text) Irony of ironies.
  • From Nature Publishing Group comes a fascinating paper about harnessing the wisdom of the crowds to predict protein structures [6]. Not only have members of the tax-paying public funded this work, they actually did some of the work too! But unfortunately they have to pay to see the paper describing their results. Ironic? Also, another published in Nature Medicine proclaims the “delay in sharing research data is costing lives” [1] (instant access only $32!)
  • From the British Medical Journal (BMJ) comes the worrying news of dodgy American laws that will lock up valuable scientific data behind paywalls [7] (please subscribe or pay below). Ironic? *
  • The “green” road to Open Access publishing involves authors uploading their manuscript to self-archive the data in some kind of  public repository. But there are many social, political and technical barriers to this, and they have been well documented [8]. You could find out about them in this paper [8], but it appears that the author hasn’t self-archived the paper or taken the “gold” road and pulished in an Open Access journal. Ironic?
  • Last, but not least, it would be interesting to know what commercial publishers make of all this text-mining magic in Science [9], but we would have to pay $24 to find out. Ironic?

These are just a small selection from amongst many. If you would like to nominate a paper for an Open Access Irony Award, simply post it to the group on Citeulike or group on Mendeley. Please feel free to start your own group elsewhere if you’re not on Citeulike or Mendeley. The name of this award probably originated from an idea Jonathan Eisen, picked up by Joe Dunckley and Matthew Cockerill at BioMed Central (see tweet below). So thanks to them for the inspiration.

For added ironic amusement, take a screenshot of the offending article and post it to the Flickr group. Sometimes the shame is too much, and articles are retrospectively made open access so a screenshot will preserve the irony.

Join us in poking fun at the crazy business of academic publishing, while making a serious point about the lack of Open Access to scientific data.

References

  1. Sommer, Josh (2010). The delay in sharing research data is costing lives Nature Medicine, 16 (7), 744-744 DOI: 10.1038/nm0710-744
  2. Boulton, G., Rawlins, M., Vallance, P., & Walport, M. (2011). Science as a public enterprise: the case for open data The Lancet, 377 (9778), 1633-1635 DOI: 10.1016/S0140-6736(11)60647-8
  3. Zerhouni, Elias (2004). Information Access: NIH Public Access Policy Science, 306 (5703), 1895-1895 DOI: 10.1126/science.1106929
  4. Hanson, B., Sugden, A., & Alberts, B. (2011). Making Data Maximally Available Science, 331 (6018), 649-649 DOI: 10.1126/science.1203354
  5. Kaiser, Jocelyn (2012). Profile of Stephen Friend at Sage Bionetworks: The Visionary Science, 335 (6069), 651-653 DOI: 10.1126/science.335.6069.651
  6. Cooper, S., Khatib, F., Treuille, A., Barbero, J., Lee, J., Beenen, M., Leaver-Fay, A., Baker, D., Popović, Z., & players, F. (2010). Predicting protein structures with a multiplayer online game Nature, 466 (7307), 756-760 DOI: 10.1038/nature09304
  7. Epstein, Keith (2012). Scientists are urged to oppose new US legislation that will put studies behind a pay wall BMJ, 344 (jan17 3) DOI: 10.1136/bmj.e452
  8. Kim, Jihyun (2010). Faculty self-archiving: Motivations and barriers Journal of the American Society for Information Science and Technology DOI: 10.1002/asi.21336
  9. Smit, Eefke, & Van Der Graaf, M. (2012). Journal article mining: the scholarly publishers’ perspective Learned Publishing, 25 (1), 35-46 DOI: 10.1087/20120106

[CC licensed picture "ask me about open access" by mollyali.]

* Please note, some research articles in BMJ are available by Open Access, but news articles like [7] are not. Thanks to Trish Groves at BMJ for bringing this to my attention after this blog post was published. Also, some “articles” here are in a grey area for open access, particularly “journalistic” stuff like news, editorials and correspondence, as pointed out by Becky Furlong. See tweets below…

June 28, 2011

Impact Factor Boxing 2011

Khmer Boxing by  lecercle, on Flickr[This post is part of an ongoing series about impact factors. See Impact Factor Boxing 2012 for the latest figures.]

Well it’s that time again. The annual sweaty fist-fight for supremacy between the scientific journals, as measured by impact factors, is upon us. Much ink (virtual and actual) has been spilt on the subject of impact factors, which we won’t add to here, other than to say:

Hey look, the “European” journals might be catching up with the “American” ones. [1]

So, love them, loathe them, use them, abuse them, ignore them or obsess over them… here’s a tiny selection of the 10,196 journals that are tracked in Journal Citation Reports (JCR) ordered by increasing impact.

WARNING: Abusing these figures can seriously damage your Science – you have been warned! (normal caveats apply)

Journal 2010 data from isiknowledge.com/JCR Eigenfactor™ Metrics
Total Cites Impact Factor 5-Year Impact Factor Immediacy Index Articles Cited Half-life Eigenfactor™ Score Article Influence™ Score
The Naval Architect* 16 0.005 0.004 0.005 189 0.00002 0.001
BMC Bioinformatics 12653 3.028 3.786 0.475 690 3.9 0.08086 1.495
PLoS ONE 42795 4.411 4.610 0.515 6714 2.1 0.32121 1.943
OUP Bioinformatics 40659 4.877 6.325 0.707 700 5.7 0.17973 2.649
PLoS Computational Biololgy 6849 5.515 6.251 0.727 406 2.8 0.06075 2.984
Genome Biology 14194 6.885 7.353 1.295 173 4.9 0.07688 3.585
Nucleic Acids Research 100444 7.836 7.314 1.755 1101 7.0 0.32867 3.016
Briefings in Bioinformatics 2886 9.283 7.395 1.204 49 5.8 0.01013 2.737
PLoS Biology 18453 12.469 14.375 2.706 214 4.1 0.16084 8.225
Science 469704 31.364 31.769 6.789 862 9.0 1.46485 16.859
Nature 511145 36.101 35.241 8.791 862 9.1 1.74466 19.334
New England Journal of Medicine 227674 53.484 52.362 10.675 345 7.5 0.69167 21.366
CA – A Cancer Journal for Clinicians ** 9801 94.262 70.216 8.667 18 3.8 0.04923 24.782

* The Naval Architect is included here for reference as it has the lowest non-zero impact factor of any science journal. A rather dubious honour…

** The Cancer Journal for Clinicians is the highest ranked journal in science, is included here for reference.

[Creative Commons licensed picture of Khmer boxing picture by lecercle]

References

  1. Karageorgopoulos, D., Lamnatou, V., Sardi, T., Gkegkes, I., & Falagas, M. (2011). Temporal Trends in the Impact Factor of European versus USA Biomedical Journals PLoS ONE, 6 (2) DOI: 10.1371/journal.pone.0016300

September 1, 2010

How many unique papers are there in Mendeley?

Lex Macho Inc. by Dan DeChiaro on Flickr, How many people in this picture?Mendeley is a handy piece of desktop and web software for managing and sharing research papers [1]. This popular tool has been getting a lot of attention lately, and with some impressive statistics it’s not difficult to see why. At the time of writing Mendeley claims to have over 36 million papers, added by just under half a million users working at more than 10,000 research institutions around the world. That’s impressive considering the startup company behind it have only been going for a few years. The major established commercial players in the field of bibliographic databases (WoK and Scopus) currently have around 40 million documents, so if Mendeley continues to grow at this rate, they’ll be more popular than Jesus (and Elsevier and Thomson) before you can say “bibliography”. But to get a real handle on how big Mendeley is we need to know how many of those 36 million documents are unique because if there are lots of duplicated documents then it will affect the overall head count. (more…)

July 27, 2010

Twenty million papers in PubMed: a triumph or a tragedy?

pubmed.govA quick search on pubmed.gov today reveals that the freely available American database of biomedical literature has just passed the 20 million citations mark*. Should we celebrate or commiserate passing this landmark figure? Is it a triumph or a tragedy that PubMed® is the size it is? (more…)

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