Surrogate (control) data have the same linear properties (mean, variance, power spectrum, autocorrelation function) within individual channels, as well as the same cross correlation across channels.

Breaking up teaching content into chunks that can be repeatedly revisited offers educators a non-linear approach to learning. Chris Jones shares advice for designing online courses ...

Control over how you spend your time While non-linear workdays appear to be the latest product of the pandemic shake-up of the workplace, they’re not a brand-new concept.