We develop a Wald type test to distinguish between long memory and ESTARnonlinearity by using a directed-Wald statistic to overcome the problem of restricted parametersunder the alternative. The test is derived from two basic model specificationswhere the first is the standard model based on an...

Virtual communities have been the focus of research forsome time. However, while many studies providerecommendations on how to build, extend and managevirtual communities, few verify the success factors theyconsider essential for virtual communities. Conclusionsmade regarding basic preferences...

The effect of the three-point rule in first league German soccer are tested empirically and compared to games freom the German cup-competition. The inclusion of cup games ensures that changes in league games can be attributed to the three-point rule.[...]

The growing relevance, scale, and complexity of Business Intelligence (BI) entails the need to findagile and efficient solutions for the coordination of maintenance and release processes – underconsideration of the heterogeneity of the involved units on the IT and the business side. The...

Empirical studies on management accounting in SME (small and medium enterprises) have shown a wide range of different implementations of management accounting in such enterprises. Contingency theory is often used to explain this varienty.

The management of the value of a firm requires the identification of important value drivers. The main objective of the paper is to find out whether value based management (e.g. shareholder value oriented management) has to take into account environmental aspects. In order to answer this...

We examine here the risk-adjusted performance of European mutual funds offered in Germany which invest in euro-denominated investment grade corporate bonds. The funds are evaluated employing a single-index model and several multi-index and asset-class-factor models. In order to account for the...

This chapter, on the persistence of corporate profits in in Germany, is organized as follows: Section I presents the empirical model and describes the econometrics for the stimation of the parameters. Section II introduces the data sample, shich consists of profit data form 299 German stock...

Objective of this paper is to enhance the understanding of modelling jumpsand to analyse the model risk based on the jump component in electricity markets.We provide a common modelling framework that allows to incorporate the main jumppatterns observed in electricity spot prices and compare the...