Because fourth-generation (4G) mobile communications services are provided over refarmed and heterogeneous bands for the first time, a unified spectrum management regime fails to accommodate the spectral heterogeneity. In Taiwan, we still extend the 2G incumbents’ usage right on the 900MHz and...

This paper analyzes volatility spillovers in multivariate GARCH-type models. We show that the cross-effects between the conditional variances determine the persistence of the transmitted volatility innovations. In particular, the influence of a foreign volatility innovation on a conditional...

Public procurement of infrastructure has been subject to a long standing debate concerning the procurements' qualification requirements. Basically, it remains unclear what determines public procurement officers to vary procurements' qualification requirements. This research serves to elaborate...