Dividing a sandwich fairly

I like to read various Stack Exchange websites, and one of them has a wonderful discussion of how you might divide a sandwich between three people fairly. Most of us are familiar with the two-person version: one person cuts and the other person gets the first choice. But what about if there are three people, or more?


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Book recommendation: Longitudinal Structural Equation Modeling

Longitudinal Structural Equation Modeling, Todd D. Little, Guilford Press 2013.

Let me start by saying that this is one of the best textbooks I’ve ever read. It was written as if the author was our mentor, and I really get the feeling that he’s sharing his wisdom with us rather than trying to be pedagogically correct. The book is full of insights on how he thinks about building and applying SEMs, and the lessons he’s learned the hard way.

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Children’s science fiction and fantasy: it’s not just for children anymore!

Larklight Cover

My wife and I have started listening to books on audio during car trips or in the evening, and we’ve discovered that there are some absolute gems in the children’s literature section of the library. Yep, kid’s stories aren’t just for kids anymore. (And I wish I’d had stories like this when I was growing up!) In particular, we’ve been listening to audio CD’s and several of them have superb a voice acting that really enhances the story. These stories show incredible imagination, and in this posting I’d like to highly recommend two series: The Larklight Trilogy and the Bartimaeus Sequence, especially the audio CD’s.

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Excellent article on Percolation Thresholds, using R

Percolation is the ability of a liquid-like substance to get through a solid-like lattice. An interesting question is how the likelihood of a material allowing percolation changes as the average density of the lattice changes from 100% (i.e. solid with no percolation) to 0% (i.e. nothing with total percolation). Read an interesting article that looks at the case of square lattices using R: Percolation Threshold on a Square Lattice

Energy Management in Laptops

I just upgraded to MacOS X Mavericks and can highly recommend it. It’s an amazing update, especially considering it’s free. You may not be a Mac user, but one thing that is quite interesting is the degree that Apple has gone to save battery power in Mavericks.

Here’s a screen capture of the Activity Monitor’s Energy tab (click on it to see it full-sized):

Screen Shot 2013-10-22 at 4.00.43 PM
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