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Using circumventing media to counteract authoritarian regimes.

The purpose of this paper is to reflect on how potential circumventing media and communication technologies could potentially assist the information flow when authoritarian regimes decide to block the main channels, such as the Internet and the mobile phone networks. The point of departure is the recent Internet blackouts in countries in the Middle East and North Africa (MENA), such as Egypt, Bahr

Experimental Techniques and Data Treatment for Studying the Dynamics of Ethanol Production/Consumption in Baker's Yeast

The dynamics of ethanol production/consumption in baker's yeast were studied under feed- rate controlled conditions. The yeast was grown on molasses in an 8-l fed-batch reactor and experiments were done at cell concentrations between 5 and 65 g l−1. Small changes in the feed rate were made around a feed rate corresponding to the critical growth rate, at which the yeast cell metabolism switches bet

A Sparse Approach for Estimation of Amplitude Modulated Sinusoids

We consider the problem of spectral analysis of signals composed of sums of multiple amplitude modulated, possibly harmonically related, sinusoids using a sparse approach. By separating the nonlinear frequency variables using a dictionary of possible frequency components as well as a spline basis for the amplitude modulation, results in a convex criterion which can be efficiently solved without