In an effort to assess the latest thinking in the Roman Catholic Church on economic matters, we examine the newest encyclical by Pope Benedict XVI, Caritas in Veritate (Charity in Truth) for guidance concerning marketing and business strategy. Core ethical values, consistent with historical...

In this article, exact D-optimal designs for a second-order response surface model on a circular design region with qualitative factors are investigated. Based on this design region, an exact D-optimal design with regular polygon structure is made up according to the remainder terms of the...

Classical Wishart distributions on the open convex cone of positive definite matrices and their fundamental features are extended to generalized Riesz and Wishart distributions associated with decomposable undirected graphs using the basic theory of exponential families. The families of these...

It is shown that the information matrices of maximal parameter subsystems in linear models are linear functions of the moment matrices. With this result, design problems for maximal parameter subsystems are shown to be equivalent to design problems for the full parameter vector of a minimally...

"Sozialstrukturelle Veränderungen können für unterschiedliche Geburtenjahrgänge ganz unterschiedliche Auswirkungen haben. In dem vorliegenden Beitrag wird der Frage nachgegangen, wie sich Veränderungen der Bildungs- und Altersstruktur auf die Einkommenssituation einzelner Geburtenjahrgänge...

Most studies dealing with the impact of marriage on mortality treat being married as a once-and-for-all status. However, multiple life changes in marital status characterize the modern life course. The purpose of this paper is to analyze how the timing of these changes affect mortality in...