Antonio presents a contrasting pair of studies performed during his consulting career, illustrating the conditions that distinguish a successful project outcome from a failure. He offers provocative advice for implementation and management of forecasting projects. Copyright International...

Although spectral analysis of stationary stochastic processes has solid mathematical foundations, this is not always so for some non-stationary cases. Here, we establish a rigorous mathematical extension of the classic Fourier spectrum to the case in which there are AR roots in the unit circle,...

<italic>Introduction</italic>: We use data from Spain on roads and motorways traffic accidents in May 2004 to quantify the statistical association between quick medical response time and mortality rate. <italic>Method</italic>: Probit and logit parameters are estimated by a Bayesian method in which samples from the posterior...