User-Interface

In the 300-and-more RSS items in my aggregator this week, there are 2 great ones from Information is Beautiful, a blog gathering (and publishing its own) nice ways to visualise data. The first one is based on a talk by Clay Shirky who, in turn, was referencing his book Cognitive Surplus. In Cognitive Surplus visualized, David McCandless just represented one of Shirky’s ideas: 200 billion hours are spent each year by US adults just watching TV whereas only 100 million hours were necessary to create Wikipedia (I guess the platform + the content) … ...

In one of his buzz, Cédric Bonhomme drew my attention on the Highcharts javascript library. This library can produce beautiful charts of various types with some Ajax interaction. The only negative point imho is that it is dual-licensed and all cases deprive you from your freedom: there is a first Creative Commons Attribution-NonCommercial 3.0 License: you can use the library for your non-profit website (see details on the licensing page) ; there is a commercial license for any other website. Now what if we only need the end-product, i.e. the resulting chart, in a commercial environment? What is covered by the license is just the re-use of the javascript library in a website, not the resulting chart. If a company choose to use Highcharts internally to render some beautiful charts and just publish (*) the resulting image, I guess they can just download the library and use it (* by “publishing”, I mean: publish a scientific paper in a peer-reviewed journal, not publishing on its website). On the other hand, no one ever questioned the fact commercial companies have licenses for all the proprietary software they use to produce anything else, from charts to statistical data, just because they publish results with these software as tools. So the “trick” here would be that, by changing the medium on which you display end-results (from website to paper, even if it’s in PDF on the journal website), you can use the free-to-download license, even in a commercial environment, for an article from a commercial company. I’m not sure this was the original intention of Highslide Software.

You may have seen in various places that “3-D Secure” (aka “Verified by Visa” or “Mastercard Securecode”) is not as secure as it says. The original paper is here (PDF). Unfortunately, having implemented the 3-D Secure system via a third-party somewhere in Europe, I have to agree with the authors. I will insist here on one aspect - the inline frame - but the authors are giving more aspects and some solutions worth considering in their paper. ...

I needed some data to test the pChart charting library so I decided to use WHO data about swine flu (in its weekly updates). The only issue I had was that the WHO started to collect data by country and changed to gather data by regional offices from July 27th, 2009 onwards. So graphs below are only by regional offices. For your information: ...

I often wrote about Pubmed here. Briefly, it’s a search engine for publications in the biomedical domain. They recently redesigned their user interface and, although there are a lot of new things to save time that came with the new design, there is still a problem with their interface: the new search box takes too much space … Redesigned Pubmed homepage ( bigger image) Redesigned Pubmed result page: search box is hiding the logo, the display settings and the first result ( bigger image) ...

Following my previous post, I attached a video camera to the composite input of my tv tuner. One good thing I didn’t noticed yesterday is that mplayer can be told to directly use pvr:// as a source instead of the generic tv:// (with many options). So you just have to enter mplayer pvr:// -tv device=/dev/video1:input=0 in order to watch tv. Noticed the input=0 above? This tells the tuner to take the video signal from the tv (read the mplayer man page to see how to change the channel). Now, since I connected my video camera to the composite video in, I need to tell mplayer to use it with input=1. One last thing: taking a screenshot in mplayer is done by pressing the ’s’ key (with option -vf screenshot. In summary, the image below was taken with mplayer pvr:// -tv device=/dev/video1:input=1:noaudio -vo x11 -vf screenshot (camera facing the screen). ...

I recently got a Hauppauge WinTV-PVR-USB2 (a TV tuner, video recorder and FM receiver) because I read it was well supported on GNU/Linux. The following post explains how I installed it on a Fedora Core 9. If you want to install it with another Linux distribution, some information may vary but most of the following steps will be exactly the same. First connect the USB device, the list of USB devices shows my system has recognised it: ...

A small post just to keep this command at hand: mplayer -fps 30 -tv driver=v4l:width=640:height=480:device=/dev/video1 tv:// This allows you to watch what your webcam “sees” (provided it uses a video4linux webcam). Btw, Cheese is funny to use too! I was also trying to find a decent Python library for video4linux but I only found outdated ones ( libfg, 2003, and pyv4l, 2002). I guess I’ll have to use some C library for a small project I’ll tell you about later ;-)

Following my previous post about an e-conference, Daneel Ariantho provided me with interesting informations … The conference about scientific patents was part of Second Nature, (scientific journal) Nature’s home in the virtual world of Second Life. Following their description, Second Nature is home to scientific exhibitions, ongoing projects and regular events. The conference in itself was given in November 2007 but, unfortunately, nor slides nor podcast are available. In real life, if you miss a conference, you still have a copy of the slides or, at least, the abstract ;-) . ...

While looking for pictures related to patents, I found these interesting ones taken by Daneel Ariantho on Flickr. They depict a virtual conference about scientific patents. It could be interesting to get more information about 1) the content of this conference and 2) the kind of conferences organized in these virtual worlds. It could also be interesting to see the social aspects of these conferences (are your contact better/different in a virtual conference?) and the “quality control” (of speakers, of posters, of advertizers, …).