The multivariate analysis of a panel of economic and financial time series with mixed frequencies is a challenging problem. The standard solution is to analyze the mix of monthly and quarterly time series jointly by means of a multivariate dynamic model with a monthly time index: artificial...

This paper analyzes situations in which a project consisting of several activities is not realized according to plan. Ifthe project is expedited, a reward arises. Analogously, a penalty arises if the project is delayed. This paper considersthe case of arbitrary nondecreasing reward and penalty...