Per Ola Kristensson | Other Stuff

Impact / Press
Other Stuff

Plotting in R

(October 20, 2011)

How to create plots using R.

Translations of Swedish poems

(April 12, 2011)

Here is a web page of a few Swedish poems I have translated on my own.

Enter Unicode code points in Latex

(March 12, 2009)

This is a brief tutorial on how to easily enter arbitrary Unicode code points in Latex. Useful if you want to enter, for example, Chinese, Japanese, Korean characters into your Latex document.

Wikipedia's reliability

(January 29, 2009)

From Wikipedia itself: why you cannot trust a tertiary source. This sign reminds me of the "Smoking will kill you" declaration that Tobacco companies are forced to include on their cigarette packages.

Sustainable energy

(December 2, 2008)

Prof. David MacKay's book Sustainable energy - without the hot air is officially published today! I recommend reading this timely book. Sustainable energy is packed with carefully gathered information, detailed calculations and deep insights. Yet it is also highly engaging and very easy to read, even entertaining at times. I personally loved the technical chapters at the end. In what other pop-sci book on energy would the author take the time to carefully explain how the laws of physics limit energy efficiency of airplane travel (Chapter III.C)? You can buy a physical copy of the book or read it for free online!

Update (14 April, 2009): The Economist calls the book a tour de force.

Nobel Prize

(September 30, 2008)

No Swedish scientist has won the Nobel Prize since 2000 (Arvid Carlsson at the University of Gothenburg was the last one). Is it because Swedes place the Nobel Prize in the same category as sports and gambling?

The screenshot to the right shows the latest headlines in Svenska Dagbladet - one of the largest serious news papers in Sweden. The circled header reads "Sport & Spel" (Sports & Gambling). The circled headline reads "Vem tar hem årets nobelpris?" (Who grabs the Nobel Prize this year?). The screenshot was taken September 30, 2008.