This paper focuses on the diagnostic checking of vector ARMA (VARMA) models with multivariate GARCH errors. For a fitted VARMA-GARCH model with Gaussian or Student-t innovations, we derive the asymptotic distributions of autocorrelation matrices of the cross-product vector of standardized...

The relationship between the implantation of Information and Communication Technologies (ICT) and the achievement of the Sustainable Development Goals (SDG), agreed at the United Nations is studied using regression models based on indicators on the SDG achievement and on the ICT adoption. The 17...