digital explorations

Site Details
Current Rank: 126 (Education)
Site Description: Touching on topics in education, applied math, statistics, computing, tourism, politics, religion, technology and computers, HP 50G, TI-89, travel.[Excellent reference site]
Date Joined: Sep 14, 2009

Tags: Applied Mathematics, econometrics, TI 89, HP-50G, Statistics

Latest Blog Posts

What happened to Galeon web browser?
on Apr 13, 2013 in Browsers Linux It was the best open-source web browser just before Firefox went open soure too. It was fast and simple, The new project name is Epiphany. I have seen it during the intermediate upgrades to Ubuntu. I cannot find the epiphany browser in the synaptic a...

new Puppy Slacko 5.5-4G linux cannot boot from usb flashdrive
on Apr 11, 2013 in Uncategorized I installed using unet-bootin the image file slacko-5.5-4G.iso to a usb flash drive. When I rebooted,it showed messages that it loaded the OS to the memory, prepared the hard disk for usage, then it hangs! I am now downloading the Precise Pangolin ve...

Linuxing: reloading a changed .bashrc file
on Mar 30, 2013 in Linux The .bashrc file is automatically executed at login in a Linux powered machine. If you have made any changes to the .bashrc file, you can reload it using the command line . ~/.bashrc or source ~/.bashrc...

Determinant by Laplace Expansion.
on Mar 25, 2013 in Linear Algebra The code is for education purposes. It cannot compete with computing the determinant by first performing triangularization on the matrix, and multiplying the diagonal elements. One first selects a row or column for expansion by specifying its index.

Gateway LT40 netbook: why can you not decrease the screen brightness?
on Mar 23, 2013 in Gateway LT 40 Netbooks I just bought a new LT 40 from Villman last last week. I am surprised that the F11 and F12 keys for screen brightness control simply do NOT work even with built-in default Linpus. Installing Ubuntu OS for a full graphical interface also do not work w...

deleting some wordpress plugins
on Mar 22, 2013 in Uncategorized They were offering good service while maintained. Now they are obsoleted and the web server log files are increasing in size , necessitating manual deletion. I am referring to the external-files and the Google Weather API plugins.

Installing cinnamon on a UBUNTU netbook
on Mar 22, 2013 in Cinnamon Linux cinnamon desktop I like the Cinnamon desktop of my Linux Mint powered old laptop. Unfortunately, the screen was giving me a lot of trouble, and had to make do with a new netbook. I had a Ubuntuntu 12 installers in a usb and this was the most convenient for me. The sc...

Programming Sarrus rule for determinants of 3 by 3 matrices.
on Mar 4, 2013 in Humor Python snakery Who would not forget the Sarrus rule, a method for computing the determinant which unfortunately works only for a 3 by 3 square matrix? One can simply return an explicit formula but where would be the fun of programming? Below is a not simple impleme...

Why you cannot trust anything in Facebook: The incredible shrimp-vitamin C-poisoning story.
on Feb 28, 2013 in Dangerous Internet I read this from a FB (FaceBook) friend's wall page. The image of a dead woman with blood on her face seemed to lend an air of credibility to the story. Please read if you eat shrimps - Very Educative: A woman suddenly died unexpectedly with signs of...

The birds and fishes are dying, showing man's failure to husband the Earth.
on Feb 17, 2013 in Environment and Ecology Subdue the Earth and REPLENISH it. That is the command given to Man by the creator GOD aside from loving and obeying HIM. Yet God knew man will fail IF they disobey, and the end result was Adam and Eve were forced out of the Garden of Eden. Here is a...

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