After conceptual clarification of "international business cycle" and a review of the literature, a new indicator is proposed. This indicator refers to two time series only and allows for an interna-tionally comparable quantification of a country's position in the business cycle. We then...

Identification and characterization of farming systems simplify huge diversity of farm types in complex agro-ecosystems, which is of critical importance for precise technological intervention and informed policy support. Multivariate statistical techniques like Principal Component Analysis (PCA)...

Die Entwicklung von deutschen Kleinstädten hinsichtlich ihrer ökonomischen, demographischen und sozialen Ausstattung ist ein bislang eher unbeachteter Themenbereich. Es werden oftmals Kleinstädte in ländlichen und peripheren Lagen thematisiert, weil man ihnen ausschließlich hier eine...

In this article, we present new ideas concerning Non-Gaussian Component Analysis (NGCA). We use the structural assumption that a high-dimensional random vector X can be represented as a sum of two components - a lowdimensional signal S and a noise component N. We show that this assumption...