This tried-and-true method is one of the best ways to study so you actually retain information—and it's not hard to do. Here's what you need to know.

The viral math problem has X users stumped - but the answer comes from lessons learned in fifth or sixth grade. The best way ...

This paper shows how to apply the lattice package of R to create effective scientific graphs. The readers will learn basic notions of the package and ways to work with it in an easy way. The R code ...