Lawrence Lessig, onder meer oprichter van Creative Commons, over de toegankelijkheid van wetenschappelijke informatie in zijn lezing bij CERN van 18 april 2011, getiteld: "The architecture of access to scientific knowledge". (Duur: 50.19 min.)
"he addresses the insanity (immoral) aspects of today’s knowledge-blocked publishing system. I think even the staunchest capitalist to the most devoted socialist can agree that the system of knowledge access fostered by closed journals is antithetical to research, health of science, and knowledge growth. It’s an outstanding presentation", aldus Georg Siemens in elearnspace.
Wednesday, April 27, 2011
Tuesday, April 12, 2011
Delen met Snip.ly
Snip.ly is meer dan een URL verkleiner. Deze tool biedt de mogelijkheid specifieke tekstpassages te delen via Twitter of Facebook.
Plak de URL van de webpagina waarvan je een gedeelte wilt gebruiken in de applicatie. De complete tekst verschijnt dan op het scherm. Highlight de te delen passage en voorzie deze van commentaar (optioneel). Je kunt nu kiezen op welk medium je de passage (plus mogelijk commentaar) wilt delen: Twitter en/of Facebook.
Maak je geen gebruik van deze optie, dan genereer je in ieder geval een nieuwe (verkorte) URL voor dat specifieke stukje tekst. Ook handig!
Monday, April 11, 2011
Tuesday, April 5, 2011
Monday, April 4, 2011
The basics of video editing
Lifehacker presenteert The basics of video editing: The complete guide.
* Part I: Getting to Know Your Editing Environment
* Part II: Creating a Project, from Start to Finish
* Part III: Effects and Color Correction
* Part IV: Preparing and Encoding Your Video for Delivery
* Part V: Additional Resources
* Part I: Getting to Know Your Editing Environment
* Part II: Creating a Project, from Start to Finish
* Part III: Effects and Color Correction
* Part IV: Preparing and Encoding Your Video for Delivery
* Part V: Additional Resources
Google Scholar vs commerciele wetenschappelijke databases
Xiaotian Chen in Serials Review met "Google Scholar's dramatic coverage improvement five years after debut".
"This empirical study found that more than five years after its debut in November 2004, Google Scholar is able to retrieve any scholarly journal article record from all the publicly accessible Web sites and from subscription-based databases it is allowed to crawl. From February to April 2010, four hundred randomly selected records of scholarly journal articles from eight databases were used in test-searching Google Scholar. Only two records were not retrieved by Google Scholar. The result was 100 percent retrieval for six databases and 98 percent for the other two databases. This is a dramatic improvement compared with some below 50 percent coverage found in 2005. With this kind of coverage improvement by Google Scholar, information professionals should reevaluate its value and values of subscription-based abstracts and indexes".
Waarom Scholar na 7 jaar (!) nog steeds een betaversie is, blijft echter een raadsel.
"This empirical study found that more than five years after its debut in November 2004, Google Scholar is able to retrieve any scholarly journal article record from all the publicly accessible Web sites and from subscription-based databases it is allowed to crawl. From February to April 2010, four hundred randomly selected records of scholarly journal articles from eight databases were used in test-searching Google Scholar. Only two records were not retrieved by Google Scholar. The result was 100 percent retrieval for six databases and 98 percent for the other two databases. This is a dramatic improvement compared with some below 50 percent coverage found in 2005. With this kind of coverage improvement by Google Scholar, information professionals should reevaluate its value and values of subscription-based abstracts and indexes".
Waarom Scholar na 7 jaar (!) nog steeds een betaversie is, blijft echter een raadsel.
Friday, April 1, 2011
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