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Web-based collaboration of LaTeX documents

This post brought LaTeX Lab to my attention (again). It is a service based on the Google Docs platform for writing and collaborating LaTeX documents. I also became aware of ScribTeX, another similar...

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archive and synchronizations with unison and rsync

I use rsync as my primary backup utility as it is fairly efficient at archiving files (NOTE: to backup to fat32 usb drives, make sure --modify-window=1 is used). I recently discovered unison, and am...

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Literature

Despite the availability of softwares such as Mendeley, Zotero, and JabRef, I like to store my papers (pdf files) and citation information (bib files) using a directory stucture, enter notes into a...

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Working with SAS macro variables

Believe it or not, I recently had to use SAS for a simulation study because it was the only system available that could maximize the exact partial likelihood of a Cox proportional hazards model for...

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VPN service for an anonymous or untraceable internet presence

I recently considered the use a paid VPN service to connect myself to the internet. Why? The internet is a whole other world out there, and you just don’t know how much privacy you lose with all the...

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Ubuntu USB installation – detect and mount cd-rom failed

I recently had to reinstall Ubuntu 10.04 Server 64 bit on one of my computers. I did it before, but this time, I could not proceed with the installation at the “detect and mount cd-rom” step. Because...

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Encrypt hard drives and usb drives with dm-crypt and TrueCrypt

REMINDER: PASSHPHRASE SHOULD BE 42+ CHARACTERS LONG TO BE EQUIVALENT TO A 256 BIT KEY. I recently explored encrypting usb drives and external hard drives (well, any hard drive really). I always wanted...

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Full disk encryption on Ubuntu with dm-crypt + luks

REMINDER: PASSHPHRASE SHOULD BE 42+ CHARACTERS LONG TO BE EQUIVALENT TO A 256 BIT KEY. In this post, I will outline my experience doing a full disk encryption on an Ubuntu computer. Note that this...

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Build multiarch R (32 bit and 64 bit) on Debian/Ubuntu

I have the 64 bit version of R compiled from source on my Ubuntu laptop. I recently had a need for R based on 32 bit since a package I needed to compile and use only works in 32 bit. I thought it was...

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sideway or landscape table over multiple pages in LaTeX

Most of my results table are huge. To get them situated in a document, the sidewaystable environment from the rotating is helpful in getting a wide table to fit on one page. To get a long table to span...

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Vietnamese in LaTeX

I recently had a need to create a Beamer presentation with Vietnamese characters. After many tries, the simple outline from this post works for me: <pre class="example">\documentclass{report}...

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Adjust picture brightness with GIMP

In GIMP, to adjust a picture’s brightness, go Tools > Color-Tools > Brightness-Contrast and adjust the brightness. I did this to get a picture to lighten up for use in a LaTeX Beamer presentation.

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background image in LaTeX Beamer presentation

This post shows how one can change the background image in a Beamer presentation: <pre class="example">%% all slides \usebackgroundtemplate{ \includegraphics[width=\paperwidth,...

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Navit: a map and navigation program

Although I own a GPS navigation device and have GPS capabilities and a data plan on my cell phone, I prefer to have a mapping program on my laptop just to be safe as I’ve been to many places where I...

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Home address on GPS navigation device

Note to self: do NOT enter your actual home address on your GPS device. If someone how gets a hold of the GPS device and your keys, they can rob you pretty easily. Rather than enter your home address,...

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OpenDNS on Tomato router for faster web experience

I saw this post and decided to opt to use OpenDNS as my DNS server instead of my ISP’s server. I followed these instructions to set it up. Basically, I activated a second DDNS service (Basic >...

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Embed all fonts in a pdf file

I recently had to embed all fonts in a pdf file for electronic submission of my dissertation. Embedding of fonts is usually required for publishing academic articles as well. I generate my pdf files...

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extracting pages in a pdf file

This post shows how one can use the pdftk command The PDF Toolkit to extract pages from a pdf file: <pre class="src src-sh">pdftk myDocument.pdf cat 1-9 15 17-19 26-end output removedPages.pdf

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Offline maps for GPS on Android without a need for a data connection

To follow up on my recent post about Navit, a cross-platform map and GPS program that you can use on your laptop when on the road, I did a search for map/GPS programs on the Android platform that do...

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NZB clients

Usenet is an age-old medium for sharing and exchanging knowledge and ideas. The creation of NZB files has facilitated the exchange of binary files such as documents from political dissedents over the...

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