How to add slide numbers in a Microsoft Powerpoint slide

This is not a scientific computing issue ... but it took me a while till I found a decent explanation about how to do that ....

http://blogs.mccombs.utexas.edu/the-most/2012/06/04/when-the-slide-number-doesnt-show-in-powerpoint/

Mount a remote directory on a SFTP server to you local machine

How to mount to your local machine a remote directory on a machine having a running SFTP server:

http://blog.damontimm.com/how-to-mount-a-sftp-folder-ssh-ftp-on-ubuntu-linux-using-sshfs-fuse/

String operators for processing environment variables in Bash

String operators for processing environment variables:

http://www.linuxjournal.com/article/8919

Define a ROI by coordinates and size in ImageJ

Problem: I need to create a ROI in a very large 3D image (4020 x 4020 x 880) by ImageJ. The use of the mouse pointer is not so handy because it's not easy to locate the top-left vertex of the ROI at the exact wanted voxel location, due to the large size of the image.

Solution: Edit/Selection/Specify opens a plugin that allows defining manually the coordinates of the top-left vertex of the ROI, its height, width and on which slice to show you (if you are working with a stack of 2D images).

Two interesting articles about Data Science and Big Data,

http://sciencecareers.sciencemag.org/career_magazine/previous_issues/articles/2013_05_13/caredit.a1300099

http://www.spiegel.de/international/business/big-data-enables-companies-and-researchers-to-look-into-the-future-a-899964.html

Change the format for displaying numbers in Matlab's workspace

By default, Matlab shows in its workspace and at the command line numbers in a format that may not be suitable in all cases, e.g., when you have a large number of decimal digits.
The format of the number display can be changed by the built-in command

format Style

where Style indicates different formats.
See the Help page of the format built-in command for its syntax and the list of possible formats.

Import data into Matlab from an ASCII text file

A quick intro about the different built-in functions available in Matlab for importing data from an ASCII text file can be found at

http://www.mathworks.ch/ch/help/matlab/import_export/ways-to-import-text-files.html

The importdata function is particularly useful.