Tax fraud is a serious problem for fiscal authorities worldwide, not only in countries regarded as hightax like Germany. Besides longterm tax reforms, tax amnesties are used to bring back taxable amounts into the legal sector. The German tax amnesty of 2004/2005 was one of the last examples in...

This dissertation consists of two parts. The first part introduces a neural network approach that is used to forecast the conditional probability density function of asset returns. The model is unified with the idea of Arbitrage Pricing Theory (APT). In the second part, an algorithm called...

Due to the complexity of the business as well as humanitarian supply chain structure the interest of collaboration significantly increased. Collaboration in supply chains is fundamental to gain success, to share information as well as risks, to reduce costs and to increase customer satisfaction....