User-generated content has proved to be a cheap and surprisingly accurate source of information. Still, little is known about how its producers select the content to which they contribute and how platform…
Information and communication technologies (ICT) play a crucial role in higher education. They modify the scope, the borders and the content of learning. Most of European Universities try to change their…
In a linear regression model, specifying the conditional mean of a variable (outcome y) as a linear function of a set of explanatory variables (regressors x ), E(y|x) = xθ, absence of correlation between the…