modelagem computacional

Detexify - LaTeX symbol classifier

2009-10-14T06:04:00.000-07:00

Just draw the symbol you are looking for into the square area above and look what happens!

http://detexify.kirelabs.org/classify.html

LaTeX -- A Typesetting Program

2009-10-14T04:39:00.001-07:00

http://www.jgsee.kmutt.ac.th/exell/General/LaTeX.html

Auto parallelizer

2009-10-13T19:54:00.001-07:00

Auto-Parallelizer is a tool that looks for parallelizable parts of source code of applications written in a sequential manner and language. In some cases it modifies the source code to maximize the number of such parts or to extend them. For example, a user can write a computational program in a sequential manner, then feed the source codes to the Auto-Parallelizer and the tool will produce code, some parts of which are executable in parallel. This usually speeds up the program execution by several times.

http://www.optimitech.com/004.htm

Mendeley

2009-05-26T00:32:00.000-07:00

http://www.mendeley.com/
http://intruders.tv/en-tech/plugg-09-startup-competition-winner-victor-henning-of-mendeley/
http://www.youtube.com/watch?v=UzJbrA9EY7A
http://en.wikipedia.org/wiki/Mendeley

pubget e google scholar

2009-05-25T22:42:00.001-07:00

http://pubget.com/search

http://scholar.google.com/

Estilos para bibliografia

2009-05-25T21:20:00.001-07:00

Estilos para bibliografia

Origem: Tex-Br, a enciclopédia livre.

O documento abaixo mostra diversos tipos de estilos para bibliografia quando o BibTeX está sendo usado:

http://amath.colorado.edu/documentation/LaTeX/reference/faq/bibstyles.pdf

Outra página que mostra diversos tipos de estilo é

http://www.cs.stir.ac.uk/~kjt/software/latex/showbst.html

Muitos dos estilos mostrados acima (e também alguns não mostrados) não fazem parte da distribuição normal do LaTeX, mas eles podem ser baixados do CTAN, no diretório biblio/.

[editar]

Criando Estilos com makebst

Se nenhum estilo existente serve para seus propósitos, você pode usar o arquivo makebst.tex para gerar um estilo bibliográfico que atende às suas exigências (ou, ao menos, que chega mais perto dela do que outros já existentes).

Simplesmente rode o comando

latex makebst

Várias perguntas serão feitas sobre como deve ser a aparência das referências. Ao final, será criado um arquivo com a extensão .dbj com as opções escolhidas. Ao rodar o latex nesse arquivo, um arquivo .bst será criado, que pode ser usado com o BibTeX.

twitter / identi.ca from the shell

2009-05-24T01:49:00.001-07:00

$ curl -u user:pass -d status="Tweeting from the shell" http://twitter.com/statuses/update.xml

$ curl -u user:pass -d status="a dent" http://identi.ca/api/statuses/update.xml

crossref, doi extract

2009-05-24T01:45:00.001-07:00

$ curl -s "http://www.crossref.org/openurl/?id=doi:10.1038/nn.2112&noredirect=true&pid=ourl_sample:sample&format=unixref"

$ for i in *.pdf;do pdftotext -q "$i" -|grep -o "\<doi:.*"|head -n1|sed 's/doi: /doi:/;s/doi:/http:\/\/dx.doi.org\//'|awk '{print $1}'|sed 's/\.$//';done

iptables proxy

2009-05-16T08:59:00.000-07:00

# iptables -t nat -A OUTPUT -d ! 192.168.0.0/16 -p tcp --dport 80 -j
DNAT --to-destination 10.1.1.254:3128

Updating twitter and identi.ca

2009-05-15T16:22:00.001-07:00

$ curl -u user:pass -d status="Tweeting from the shell"
http://twitter.com/statuses/update.xml
$ curl -u USER:PASS -d status="NEW STATUS"
http://identi.ca/api/statuses/update.xml

Bazaar

2009-05-07T09:54:00.001-07:00

Bazaar is a distributed version control system that makes it easier
for people to work together on software projects.

http://bazaar-vcs.org/

http://doc.bazaar-vcs.org/latest/en/mini-tutorial/index.html

rsync com backup

2009-05-07T09:52:00.001-07:00

$ rsync -azvb --backup-dir=`date +%y-%m-%d_%H-%M` --delete ~/origem
host:/destino/ >> ~/backup.log 2>&1

Como salvar uma regiao da tela para uma imagem?

2009-04-15T14:15:00.001-07:00

$ import imagem.png

unison

2009-04-02T23:01:00.001-07:00

Segundo o manual é possivel fazer sincronia bidirecional.

http://www.cis.upenn.edu/~bcpierce/unison/

convertendo referencias RIS para o formato BibTeX

2009-03-28T13:40:00.001-07:00

sudo apt-get install bibutils

ris2xml refs.ris | xml2bib > refs.bib

Argument list too long

2009-03-17T06:06:00.001-07:00

problemas para remover uma grande quantidade de arquivos?

for i in `find diretorio -iname "*.dat"` ; do rm $i ; done

Ajuste de uma funcao com gnuplot

2009-03-03T12:05:00.001-08:00

plot "dados.dat"
f(x)=a*x**b
fit f(x) "dados.dat" via a,b
replot f(x)

g(x)=c/sqrt(x)
fit g(x) "dados.dat" via c
replot g(x)

IP Masquerading

2008-11-03T16:25:00.001-08:00

sudo apt-get install iptables
echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -t nat -A POSTROUTING -s 192.168.2.0/24 -o eth0 -j MASQUERADE

The diskless nodes should be set up so that 192.168.2.1 is their
default gateway.

eth0 = 192.168.2.1

gnuplot superfícies

2008-10-27T19:06:00.001-07:00

andicionando linhas em branco com o sed
sed '0~6G' dados.dat > dados2.dat

gnuplot
set dgrid3d
splot 'dados2.dat' u 1:2:3 w l

migrando passwd group etc...

2008-10-24T00:12:00.001-07:00

http://www.cyberciti.biz/faq/howto-move-migrate-user-accounts-old-to-new-server/

NFS

2008-10-18T00:42:00.001-07:00

https://help.ubuntu.com/community/SettingUpNFSHowTo

TORQUE Quick Start Guide

2008-10-18T00:39:00.001-07:00

http://www.clusterresources.com/products/torque/docs20/a.ltorquequickstart.shtml
http://www.clusterresources.com/products/torque/docs20/1.2basicconfig.shtml

GmailFS

2008-09-17T22:07:00.001-07:00

https://wiki.ubuntu.com/GmailFS
http://richard.jones.name/google-hacks/gmail-filesystem/gmail-filesystem-using.html

X remoto

2008-09-11T01:02:00.001-07:00

X remoto
X :1 -query ip.do.servidor

via ssh
ssh -tYC firewall "ssh -YC alvo"

reverse ssh tunnel

2008-09-10T22:07:00.001-07:00

~$ cat bin/ssh-r.sh
#!/bin/sh
# $REMOTE_HOST is the name of the remote system
REMOTE_HOST=firewall
# $REMOTE_PORT is the remote port number that will be used to tunnel
# back to this system
REMOTE_PORT=22222
# $COMMAND is the command used to create the reverse ssh tunnel
COMMAND="ssh -q -N -R $REMOTE_PORT:localhost:22 $REMOTE_HOST"
# Is the tunnel up? Perform two tests:
# 1. Check for relevant process ($COMMAND)
pgrep -f -x "$COMMAND" > /dev/null 2>&1 || $COMMAND
# 2. Test tunnel by looking at "netstat" output on $REMOTE_HOST
ssh $REMOTE_HOST netstat -an | egrep "tcp.*:$REMOTE_PORT.*LISTEN" >
/dev/null 2>&1
if [ $? -ne 0 ] ; then
pkill -f -x "$COMMAND"
$COMMAND
fi

~$ crontab -e
# m h dom mon dow command
*/17 * * * * ~/bin/ssh-r.sh

fonte: http://www.brandonhutchinson.com/ssh_tunnelling.html

nfs

2008-09-10T21:58:00.001-07:00

server
sudo apt-get install portmap nfs-kernel-server

sudo gedit /etc/exports
/home 192.168.0.0/255.255.255.0(rw,sync,no_subtree_check)
/usr/local 192.168.0.0/255.255.255.0(rw,sync,no_subtree_check)
The above shares /home and /usr/local to all clients in the private
network falling within the designated ip address range.

After setting up /etc/exports, export the shares:
sudo exportfs -ra

You'll want to do this command whenever /etc/exports is modified.
Restart Services
If /etc/default/portmap was changed, portmap will need to be restarted:
sudo /etc/init.d/portmap restart
The NFS kernel server will also require a restart:
sudo /etc/init.d/nfs-kernel-server restart

client
sudo apt-get install portmap nfs-common

sudo mount 192.168.1.42:/home/music /home/poningru/music

rsync

2008-09-10T21:44:00.001-07:00

rsync via tunnel
ssh -CNq firewall -L 2222:alvo:22 > /dev/null 2>&1 &
-C Requests compression
-N Do not execute a remote command.
-q Quiet mode.
rsync -azc -e 'ssh -p 2222' origem localhost:

rsync
rsync -azc origem destino:
-c, --checksum skip based on checksum, not mod-time & size
-a, --archive archive mode; same as -rlptgoD (no -H, -A)
-z, --compress compress file data during the transfer

povray metal

2008-09-10T21:21:00.001-07:00

#include "metals.inc"
#include "golds.inc"
sphere { <0, 0, -5> , 1 texture {T_Brass_1B} }

T_Brass_1A to T_Brass_5E
T_Copper_1A to T_Copper_5E
T_Chrome_1A to T_Chrome_5E
T_Silver_1A to T_Silver_5E
A = sem refrexo

bc - An arbitrary precision calculator language

2008-09-10T21:19:00.001-07:00

pi=$(echo "scale=10; 4*a(1)" | bc -l)
c() cos (rad)
s() sin (rad)

bash scripts

2008-09-10T21:16:00.001-07:00

#!/bin/sh
for i in `seq 8 405`
do
head -n $i entrada.pov > saida$i.pov
done

for i in `cat listaesf` ; do echo $i ; done

sed 's/relatime/noatime/' </etc/fstab >fstab.tmp

rm ou rmvb no ubuntu hardy

2008-05-28T14:00:00.001-07:00

$ sudo wget http://www.medibuntu.org/sources.list.d/hardy.list -O
/etc/apt/sources.list.d/medibuntu.list
$ sudo apt-get update && sudo apt-get install medibuntu-keyring &&
sudo apt-get update
$ sudo apt-get install w32codecs

povray

2008-05-08T05:15:00.001-07:00

Gerando imagens de alta qualidade em simulações.

http://www.povray.org/
http://hof.povray.org/
http://www.imagico.de/pov/ray_povsdl.html
http://www.museum.state.il.us/ismdepts/library/linuxguides/povray/pov197.htm

gmail na linha de comando

2008-05-08T02:40:00.001-07:00

no ubuntu:
$ sudo aptitude install sendemail libio-socket-ssl-perl
$ sendEmail -f usuario@gmail.com -t destinatario@mail.com -u assunto
-m mensagem -s smtp.gmail.com -xu usuario

mais informações:
http://www.vivaolinux.com.br/artigos/verArtigo.php?codigo=7470&pagina=1
http://caspian.dotconf.net/menu/Software/SendEmail/

aulas MIT

2008-02-24T22:25:00.001-08:00

http://ocw.mit.edu/OcwWeb/Materials-Science-and-Engineering/3-320Spring-2005/VideoLectures/index.htm