Fun with isograms
An isogram is a meaningful string, generally a word or a phrase, made of distinct letters. When playing with combinatorics, it’s fun to learn about the existence of such words. Let’s take the word COMBINATORICS, then there are 13!/(2!2!2!) ways to form a new 13 letters words from its letters. In fact, we must divide [...]
BBC video: Cantor, Gödel, Turing
I found this nice video about probably the most famous logician and early computer scientists of all times. The documentary has this quality that we are expecting from the BBC.
Dangerous Knowledge Part 1
Dangerous Knowledge Part 2
Even if the concepts are quite deep, they’ve been able to make it accessible to anybody.
How to draw a tree with Latex
I had a bad time last night trying to draw a graph for a tree representation of a game. My researches to find a usable tool to draw graphs, preferably a GUI editor, have been unsucessful so far. I was reluctant to use Pstricks even though this was probably the best way to achieve high [...]
NSLU2 and MPD
Having a functionnal setup for playing music on my unslung box, I decided to install and configure mpd on it for more flexibility.
Mpd is available as an ipkg package but some work must be done to make it work. I had to create /opt/etc/mpd.conf with the following content:
port “6600″
music_directory “/share/flash/data/public/mp3″
playlist_directory “/share/flash/data/public/mpd/playlists/”
db_file “/share/flash/data/public/mpd/mpd.db”
log_file “/share/flash/data/public/mpd/mpd.log”
error_file “/share/flash/data/public/mpd/mpd.error”
state_file “/share/flash/data/public/mpd/state”
audio_output_format [...]
La limace qui fait tout
Lors de ma participation à Eurobot 2007, j’avais expérimenté l’utilisation d’un NSLU2 pour le robot. L’ordinateur embarqué à base de processeur ARM permet beaucoup malgré ça taille et son prix plutôt abordable (quelques 50$ sur Ebay). Cette année-là, j’avais utilisé OpenEmbedded et OpenSlug comme distro sur le bidule (”slug” pour les intimes). Une modification électroniques [...]
Per process disk read/write monitoring
One of the most annoying thing for me is to hear this clicking noise coming from my hard drive. Last day, while I was trying to concentrate on some algorithms, there was this sound coming out of my laptop which was starting to drive me crazy. The frequency was constant and continuous, so I asked [...]
3 useful applications
I’ve just discovered these 3 applications two days ago and I think it worth to give it a try.
Conky
Conky is lightweight system monitor. Screenlets might be great, but I don’t find it integrated good enough to my desktop and makes my session to load slower. Conky is available in the Ubuntu repos.
Terminator
I was normally [...]
Bluetooth et le Macbook Pro 4.1 sous Ubuntu Hardy
Je n’arrivais pas à faire fonctionner ma sourie bluetooth au cours des dernières semaines. Toutes les indications sur les forums ou dans les tutoriels indiquaient que le bluetooth devait fonctionner parfaitement dans les dernières versions d’Ubuntu. Pourtant, je n’arrivais pas à faire apparaître aucun dispositif bluetooth par l’applet bluetooth-manager de gnome. En passant en ligne [...]
Recevoir des appels en provenance d’un téléphone sur Ekiga
Ayant réussi à configurer Ekiga pour appeler à des numéro de téléphones, j’ai songé après tout à me procurer un numéro de téléphone pour recevoir des appels également en Voip sur mon ordinateur. La qualité du service de diamondcard.us m’a semblé bonne et peut-être même meilleure que celle de Skype concernant la fluidité de transfert [...]
